Add ADS-B history persistence and reporting UI

.dockerignore

@@ -33,6 +33,9 @@ htmlcov/
 # Logs
 *.log
 
+# Local Postgres data
+pgdata/
+
 # Captured files (don't include in image)
 *.cap
 *.pcap

.gitignore

@@ -10,9 +10,17 @@ venv/
 ENV/
 uv.lock
 
-# Logs
-*.log
-pager_messages.log
+# Logs
+*.log
+pager_messages.log
+
+# Local data
+downloads/
+pgdata/
+
+# Local data
+downloads/
+pgdata/
 
 # IDE
 .idea/
@@ -34,7 +42,4 @@ build/
 uv.lock
 *.db
 *.sqlite3
-intercept.db
-
-# Agent Files
-.agent
+intercept.db

config.py

@@ -126,9 +126,18 @@ AIRODUMP_HEADER_LINES = _get_env_int('AIRODUMP_HEADER_LINES', 2)
 BT_SCAN_TIMEOUT = _get_env_int('BT_SCAN_TIMEOUT', 10)
 BT_UPDATE_INTERVAL = _get_env_float('BT_UPDATE_INTERVAL', 2.0)
 
-# ADS-B settings
-ADSB_SBS_PORT = _get_env_int('ADSB_SBS_PORT', 30003)
-ADSB_UPDATE_INTERVAL = _get_env_float('ADSB_UPDATE_INTERVAL', 1.0)
+# ADS-B settings
+ADSB_SBS_PORT = _get_env_int('ADSB_SBS_PORT', 30003)
+ADSB_UPDATE_INTERVAL = _get_env_float('ADSB_UPDATE_INTERVAL', 1.0)
+ADSB_HISTORY_ENABLED = _get_env_bool('ADSB_HISTORY_ENABLED', False)
+ADSB_DB_HOST = _get_env('ADSB_DB_HOST', 'localhost')
+ADSB_DB_PORT = _get_env_int('ADSB_DB_PORT', 5432)
+ADSB_DB_NAME = _get_env('ADSB_DB_NAME', 'intercept_adsb')
+ADSB_DB_USER = _get_env('ADSB_DB_USER', 'intercept')
+ADSB_DB_PASSWORD = _get_env('ADSB_DB_PASSWORD', 'intercept')
+ADSB_HISTORY_BATCH_SIZE = _get_env_int('ADSB_HISTORY_BATCH_SIZE', 500)
+ADSB_HISTORY_FLUSH_INTERVAL = _get_env_float('ADSB_HISTORY_FLUSH_INTERVAL', 1.0)
+ADSB_HISTORY_QUEUE_SIZE = _get_env_int('ADSB_HISTORY_QUEUE_SIZE', 50000)
 
 # Satellite settings
 SATELLITE_UPDATE_INTERVAL = _get_env_int('SATELLITE_UPDATE_INTERVAL', 30)

docker-compose.yml

@@ -5,6 +5,8 @@ services:
   intercept:
     build: .
     container_name: intercept
+    depends_on:
+      - adsb_db
     ports:
       - "5050:5050"
     # Privileged mode required for USB SDR device access
@@ -22,6 +24,12 @@ services:
       - INTERCEPT_HOST=0.0.0.0
       - INTERCEPT_PORT=5050
       - INTERCEPT_LOG_LEVEL=INFO
+      - INTERCEPT_ADSB_HISTORY_ENABLED=true
+      - INTERCEPT_ADSB_DB_HOST=adsb_db
+      - INTERCEPT_ADSB_DB_PORT=5432
+      - INTERCEPT_ADSB_DB_NAME=intercept_adsb
+      - INTERCEPT_ADSB_DB_USER=intercept
+      - INTERCEPT_ADSB_DB_PASSWORD=intercept
     # Network mode for WiFi scanning (requires host network)
     # network_mode: host
     restart: unless-stopped
@@ -32,6 +40,23 @@ services:
       retries: 3
       start_period: 10s
 
+  adsb_db:
+    image: postgres:16-alpine
+    container_name: intercept-adsb-db
+    environment:
+      - POSTGRES_DB=intercept_adsb
+      - POSTGRES_USER=intercept
+      - POSTGRES_PASSWORD=intercept
+    volumes:
+      # Move this path to the USB drive later for larger retention
+      - ./pgdata:/var/lib/postgresql/data
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U intercept -d intercept_adsb"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
 # Optional: Add volume for persistent SQLite database
 # volumes:
 #   intercept-data:

routes/adsb.py

@@ -2,27 +2,39 @@
 
 from __future__ import annotations
 
-import json
-import os
-import queue
-import shutil
-import socket
-import subprocess
-import threading
-import time
-from typing import Any, Generator
-
-from flask import Blueprint, jsonify, request, Response, render_template
-
-import app as app_module
-from utils.logging import adsb_logger as logger
-from utils.validation import (
-    validate_device_index, validate_gain,
-    validate_rtl_tcp_host, validate_rtl_tcp_port
-)
+import json
+import os
+import queue
+import shutil
+import socket
+import subprocess
+import threading
+import time
+from datetime import datetime, timezone
+from typing import Any, Generator
+
+from flask import Blueprint, jsonify, request, Response, render_template
+from flask import make_response
+import psycopg2
+from psycopg2.extras import RealDictCursor
+
+import app as app_module
+from config import (
+    ADSB_DB_HOST,
+    ADSB_DB_NAME,
+    ADSB_DB_PASSWORD,
+    ADSB_DB_PORT,
+    ADSB_DB_USER,
+    ADSB_HISTORY_ENABLED,
+)
+from utils.logging import adsb_logger as logger
+from utils.validation import (
+    validate_device_index, validate_gain,
+    validate_rtl_tcp_host, validate_rtl_tcp_port
+)
 from utils.sse import format_sse
 from utils.sdr import SDRFactory, SDRType
-from utils.constants import (
+from utils.constants import (
     ADSB_SBS_PORT,
     ADSB_TERMINATE_TIMEOUT,
     PROCESS_TERMINATE_TIMEOUT,
@@ -33,9 +45,10 @@ from utils.constants import (
     SSE_QUEUE_TIMEOUT,
     SOCKET_CONNECT_TIMEOUT,
     ADSB_UPDATE_INTERVAL,
-    DUMP1090_START_WAIT,
-)
-from utils import aircraft_db
+    DUMP1090_START_WAIT,
+)
+from utils import aircraft_db
+from utils.adsb_history import adsb_history_writer, adsb_snapshot_writer, _ensure_adsb_schema
 
 adsb_bp = Blueprint('adsb', __name__, url_prefix='/adsb')
 
@@ -56,7 +69,7 @@ _looked_up_icaos: set[str] = set()
 aircraft_db.load_database()
 
 # Common installation paths for dump1090 (when not in PATH)
-DUMP1090_PATHS = [
+DUMP1090_PATHS = [
     # Homebrew on Apple Silicon (M1/M2/M3)
     '/opt/homebrew/bin/dump1090',
     '/opt/homebrew/bin/dump1090-fa',
@@ -69,8 +82,202 @@ DUMP1090_PATHS = [
     '/usr/bin/dump1090',
     '/usr/bin/dump1090-fa',
     '/usr/bin/dump1090-mutability',
-]
-
+]
+
+
+def _get_part(parts: list[str], index: int) -> str | None:
+    if len(parts) <= index:
+        return None
+    value = parts[index].strip()
+    return value or None
+
+
+def _parse_sbs_timestamp(date_str: str | None, time_str: str | None) -> datetime | None:
+    if not date_str or not time_str:
+        return None
+    combined = f"{date_str} {time_str}"
+    for fmt in ("%Y/%m/%d %H:%M:%S.%f", "%Y/%m/%d %H:%M:%S"):
+        try:
+            parsed = datetime.strptime(combined, fmt)
+            return parsed.replace(tzinfo=timezone.utc)
+        except ValueError:
+            continue
+    return None
+
+
+def _parse_int(value: str | None) -> int | None:
+    if value is None:
+        return None
+    try:
+        return int(float(value))
+    except (ValueError, TypeError):
+        return None
+
+
+def _parse_float(value: str | None) -> float | None:
+    if value is None:
+        return None
+    try:
+        return float(value)
+    except (ValueError, TypeError):
+        return None
+
+
+def _build_history_record(
+    parts: list[str],
+    msg_type: str,
+    icao: str,
+    msg_time: datetime | None,
+    logged_time: datetime | None,
+    service_addr: str,
+    raw_line: str,
+) -> dict[str, Any]:
+    return {
+        'received_at': datetime.now(timezone.utc),
+        'msg_time': msg_time,
+        'logged_time': logged_time,
+        'icao': icao,
+        'msg_type': _parse_int(msg_type),
+        'callsign': _get_part(parts, 10),
+        'altitude': _parse_int(_get_part(parts, 11)),
+        'speed': _parse_int(_get_part(parts, 12)),
+        'heading': _parse_int(_get_part(parts, 13)),
+        'vertical_rate': _parse_int(_get_part(parts, 16)),
+        'lat': _parse_float(_get_part(parts, 14)),
+        'lon': _parse_float(_get_part(parts, 15)),
+        'squawk': _get_part(parts, 17),
+        'session_id': _get_part(parts, 2),
+        'aircraft_id': _get_part(parts, 3),
+        'flight_id': _get_part(parts, 5),
+        'raw_line': raw_line,
+        'source_host': service_addr,
+    }
+
+
+_history_schema_checked = False
+
+
+def _get_history_connection():
+    return psycopg2.connect(
+        host=ADSB_DB_HOST,
+        port=ADSB_DB_PORT,
+        dbname=ADSB_DB_NAME,
+        user=ADSB_DB_USER,
+        password=ADSB_DB_PASSWORD,
+    )
+
+
+def _ensure_history_schema() -> None:
+    global _history_schema_checked
+    if _history_schema_checked:
+        return
+    try:
+        with _get_history_connection() as conn:
+            _ensure_adsb_schema(conn)
+        _history_schema_checked = True
+    except Exception as exc:
+        logger.warning("ADS-B schema check failed: %s", exc)
+
+
+def _parse_int_param(value: str | None, default: int, min_value: int | None = None, max_value: int | None = None) -> int:
+    try:
+        parsed = int(value) if value is not None else default
+    except (ValueError, TypeError):
+        parsed = default
+    if min_value is not None:
+        parsed = max(min_value, parsed)
+    if max_value is not None:
+        parsed = min(max_value, parsed)
+    return parsed
+
+
+def _get_active_session() -> dict[str, Any] | None:
+    if not ADSB_HISTORY_ENABLED:
+        return None
+    _ensure_history_schema()
+    try:
+        with _get_history_connection() as conn:
+            with conn.cursor(cursor_factory=RealDictCursor) as cur:
+                cur.execute(
+                    """
+                    SELECT *
+                    FROM adsb_sessions
+                    WHERE ended_at IS NULL
+                    ORDER BY started_at DESC
+                    LIMIT 1
+                    """
+                )
+                return cur.fetchone()
+    except Exception as exc:
+        logger.warning("ADS-B session lookup failed: %s", exc)
+        return None
+
+
+def _record_session_start(
+    *,
+    device_index: int | None,
+    sdr_type: str | None,
+    remote_host: str | None,
+    remote_port: int | None,
+    start_source: str | None,
+    started_by: str | None,
+) -> dict[str, Any] | None:
+    if not ADSB_HISTORY_ENABLED:
+        return None
+    _ensure_history_schema()
+    try:
+        with _get_history_connection() as conn:
+            with conn.cursor(cursor_factory=RealDictCursor) as cur:
+                cur.execute(
+                    """
+                    INSERT INTO adsb_sessions (
+                        device_index,
+                        sdr_type,
+                        remote_host,
+                        remote_port,
+                        start_source,
+                        started_by
+                    )
+                    VALUES (%s, %s, %s, %s, %s, %s)
+                    RETURNING *
+                    """,
+                    (
+                        device_index,
+                        sdr_type,
+                        remote_host,
+                        remote_port,
+                        start_source,
+                        started_by,
+                    ),
+                )
+                return cur.fetchone()
+    except Exception as exc:
+        logger.warning("ADS-B session start record failed: %s", exc)
+        return None
+
+
+def _record_session_stop(*, stop_source: str | None, stopped_by: str | None) -> dict[str, Any] | None:
+    if not ADSB_HISTORY_ENABLED:
+        return None
+    _ensure_history_schema()
+    try:
+        with _get_history_connection() as conn:
+            with conn.cursor(cursor_factory=RealDictCursor) as cur:
+                cur.execute(
+                    """
+                    UPDATE adsb_sessions
+                    SET ended_at = NOW(),
+                        stop_source = COALESCE(%s, stop_source),
+                        stopped_by = COALESCE(%s, stopped_by)
+                    WHERE ended_at IS NULL
+                    RETURNING *
+                    """,
+                    (stop_source, stopped_by),
+                )
+                return cur.fetchone()
+    except Exception as exc:
+        logger.warning("ADS-B session stop record failed: %s", exc)
+        return None
 
 def find_dump1090():
     """Find dump1090 binary, checking PATH and common locations."""
@@ -100,12 +307,15 @@ def check_dump1090_service():
     return None
 
 
-def parse_sbs_stream(service_addr):
-    """Parse SBS format data from dump1090 SBS port."""
-    global adsb_using_service, adsb_connected, adsb_messages_received, adsb_last_message_time, adsb_bytes_received, adsb_lines_received, _sbs_error_logged
-
-    host, port = service_addr.split(':')
-    port = int(port)
+def parse_sbs_stream(service_addr):
+    """Parse SBS format data from dump1090 SBS port."""
+    global adsb_using_service, adsb_connected, adsb_messages_received, adsb_last_message_time, adsb_bytes_received, adsb_lines_received, _sbs_error_logged
+
+    adsb_history_writer.start()
+    adsb_snapshot_writer.start()
+
+    host, port = service_addr.split(':')
+    port = int(port)
 
     logger.info(f"SBS stream parser started, connecting to {host}:{port}")
     adsb_connected = False
@@ -147,18 +357,31 @@ def parse_sbs_stream(service_addr):
                         if adsb_lines_received <= 3:
                             logger.info(f"SBS line {adsb_lines_received}: {line[:100]}")
 
-                        parts = line.split(',')
-                        if len(parts) < 11 or parts[0] != 'MSG':
-                            if adsb_lines_received <= 5:
-                                logger.debug(f"Skipping non-MSG line: {line[:50]}")
-                            continue
-
-                        msg_type = parts[1]
-                        icao = parts[4].upper()
-                        if not icao:
-                            continue
-
-                        aircraft = app_module.adsb_aircraft.get(icao) or {'icao': icao}
+                        parts = line.split(',')
+                        if len(parts) < 11 or parts[0] != 'MSG':
+                            if adsb_lines_received <= 5:
+                                logger.debug(f"Skipping non-MSG line: {line[:50]}")
+                            continue
+
+                        msg_type = parts[1]
+                        icao = parts[4].upper()
+                        if not icao:
+                            continue
+
+                        msg_time = _parse_sbs_timestamp(_get_part(parts, 6), _get_part(parts, 7))
+                        logged_time = _parse_sbs_timestamp(_get_part(parts, 8), _get_part(parts, 9))
+                        history_record = _build_history_record(
+                            parts=parts,
+                            msg_type=msg_type,
+                            icao=icao,
+                            msg_time=msg_time,
+                            logged_time=logged_time,
+                            service_addr=service_addr,
+                            raw_line=line,
+                        )
+                        adsb_history_writer.enqueue(history_record)
+
+                        aircraft = app_module.adsb_aircraft.get(icao) or {'icao': icao}
 
                         # Look up aircraft type from database (once per ICAO)
                         if icao not in _looked_up_icaos:
@@ -229,12 +452,30 @@ def parse_sbs_stream(service_addr):
 
                         now = time.time()
                         if now - last_update >= ADSB_UPDATE_INTERVAL:
-                            for update_icao in pending_updates:
-                                if update_icao in app_module.adsb_aircraft:
-                                    app_module.adsb_queue.put({
-                                        'type': 'aircraft',
-                                        **app_module.adsb_aircraft[update_icao]
-                                    })
+                            for update_icao in pending_updates:
+                                if update_icao in app_module.adsb_aircraft:
+                                    snapshot = app_module.adsb_aircraft[update_icao]
+                                    app_module.adsb_queue.put({
+                                        'type': 'aircraft',
+                                        **snapshot
+                                    })
+                                    adsb_snapshot_writer.enqueue({
+                                        'captured_at': datetime.now(timezone.utc),
+                                        'icao': update_icao,
+                                        'callsign': snapshot.get('callsign'),
+                                        'registration': snapshot.get('registration'),
+                                        'type_code': snapshot.get('type_code'),
+                                        'type_desc': snapshot.get('type_desc'),
+                                        'altitude': snapshot.get('altitude'),
+                                        'speed': snapshot.get('speed'),
+                                        'heading': snapshot.get('heading'),
+                                        'vertical_rate': snapshot.get('vertical_rate'),
+                                        'lat': snapshot.get('lat'),
+                                        'lon': snapshot.get('lon'),
+                                        'squawk': snapshot.get('squawk'),
+                                        'source_host': service_addr,
+                                        'snapshot': snapshot,
+                                    })
                             pending_updates.clear()
                             last_update = now
 
@@ -282,18 +523,18 @@ def check_adsb_tools():
     })
 
 
-@adsb_bp.route('/status')
-def adsb_status():
-    """Get ADS-B tracking status for debugging."""
+@adsb_bp.route('/status')
+def adsb_status():
+    """Get ADS-B tracking status for debugging."""
     # Check if dump1090 process is still running
     dump1090_running = False
     if app_module.adsb_process:
         dump1090_running = app_module.adsb_process.poll() is None
 
-    return jsonify({
-        'tracking_active': adsb_using_service,
-        'active_device': adsb_active_device,
-        'connected_to_sbs': adsb_connected,
+    return jsonify({
+        'tracking_active': adsb_using_service,
+        'active_device': adsb_active_device,
+        'connected_to_sbs': adsb_connected,
         'messages_received': adsb_messages_received,
         'bytes_received': adsb_bytes_received,
         'lines_received': adsb_lines_received,
@@ -303,25 +544,50 @@ def adsb_status():
         'queue_size': app_module.adsb_queue.qsize(),
         'dump1090_path': find_dump1090(),
         'dump1090_running': dump1090_running,
-        'port_30003_open': check_dump1090_service() is not None
-    })
+        'port_30003_open': check_dump1090_service() is not None
+    })
+
+
+@adsb_bp.route('/session')
+def adsb_session():
+    """Get ADS-B session status and uptime."""
+    session = _get_active_session()
+    uptime_seconds = None
+    if session and session.get('started_at'):
+        started_at = session['started_at']
+        if isinstance(started_at, datetime):
+            uptime_seconds = int((datetime.now(timezone.utc) - started_at).total_seconds())
+    return jsonify({
+        'tracking_active': adsb_using_service,
+        'connected_to_sbs': adsb_connected,
+        'active_device': adsb_active_device,
+        'session': session,
+        'uptime_seconds': uptime_seconds,
+    })
 
 
 @adsb_bp.route('/start', methods=['POST'])
-def start_adsb():
-    """Start ADS-B tracking."""
-    global adsb_using_service, adsb_active_device
-
-    with app_module.adsb_lock:
-        if adsb_using_service:
-            return jsonify({'status': 'already_running', 'message': 'ADS-B tracking already active'}), 409
-
-    data = request.json or {}
-
-    # Validate inputs
-    try:
-        gain = int(validate_gain(data.get('gain', '40')))
-        device = validate_device_index(data.get('device', '0'))
+def start_adsb():
+    """Start ADS-B tracking."""
+    global adsb_using_service, adsb_active_device
+
+    with app_module.adsb_lock:
+        if adsb_using_service:
+            session = _get_active_session()
+            return jsonify({
+                'status': 'already_running',
+                'message': 'ADS-B tracking already active',
+                'session': session
+            }), 409
+
+    data = request.json or {}
+    start_source = data.get('source')
+    started_by = request.remote_addr
+
+    # Validate inputs
+    try:
+        gain = int(validate_gain(data.get('gain', '40')))
+        device = validate_device_index(data.get('device', '0'))
     except ValueError as e:
         return jsonify({'status': 'error', 'message': str(e)}), 400
 
@@ -337,21 +603,45 @@ def start_adsb():
         except ValueError as e:
             return jsonify({'status': 'error', 'message': str(e)}), 400
 
-        remote_addr = f"{remote_sbs_host}:{remote_sbs_port}"
-        logger.info(f"Connecting to remote dump1090 SBS at {remote_addr}")
-        adsb_using_service = True
-        thread = threading.Thread(target=parse_sbs_stream, args=(remote_addr,), daemon=True)
-        thread.start()
-        return jsonify({'status': 'started', 'message': f'Connected to remote dump1090 at {remote_addr}'})
+        remote_addr = f"{remote_sbs_host}:{remote_sbs_port}"
+        logger.info(f"Connecting to remote dump1090 SBS at {remote_addr}")
+        adsb_using_service = True
+        thread = threading.Thread(target=parse_sbs_stream, args=(remote_addr,), daemon=True)
+        thread.start()
+        session = _record_session_start(
+            device_index=device,
+            sdr_type='remote',
+            remote_host=remote_sbs_host,
+            remote_port=remote_sbs_port,
+            start_source=start_source,
+            started_by=started_by,
+        )
+        return jsonify({
+            'status': 'started',
+            'message': f'Connected to remote dump1090 at {remote_addr}',
+            'session': session
+        })
 
     # Check if dump1090 is already running externally (e.g., user started it manually)
     existing_service = check_dump1090_service()
-    if existing_service:
-        logger.info(f"Found existing dump1090 service at {existing_service}")
-        adsb_using_service = True
-        thread = threading.Thread(target=parse_sbs_stream, args=(existing_service,), daemon=True)
-        thread.start()
-        return jsonify({'status': 'started', 'message': 'Connected to existing dump1090 service'})
+    if existing_service:
+        logger.info(f"Found existing dump1090 service at {existing_service}")
+        adsb_using_service = True
+        thread = threading.Thread(target=parse_sbs_stream, args=(existing_service,), daemon=True)
+        thread.start()
+        session = _record_session_start(
+            device_index=device,
+            sdr_type='external',
+            remote_host='localhost',
+            remote_port=ADSB_SBS_PORT,
+            start_source=start_source,
+            started_by=started_by,
+        )
+        return jsonify({
+            'status': 'started',
+            'message': 'Connected to existing dump1090 service',
+            'session': session
+        })
 
     # Get SDR type from request
     sdr_type_str = data.get('sdr_type', 'rtlsdr')
@@ -402,10 +692,10 @@ def start_adsb():
     if sdr_type == SDRType.RTL_SDR:
         cmd[0] = dump1090_path
 
-    try:
-        logger.info(f"Starting dump1090 with device index {device}: {' '.join(cmd)}")
-        app_module.adsb_process = subprocess.Popen(
-            cmd,
+    try:
+        logger.info(f"Starting dump1090 with device index {device}: {' '.join(cmd)}")
+        app_module.adsb_process = subprocess.Popen(
+            cmd,
             stdout=subprocess.DEVNULL,
             stderr=subprocess.PIPE,
             start_new_session=True  # Create new process group for clean shutdown
@@ -432,24 +722,40 @@ def start_adsb():
                     error_msg += f' Error: {stderr_output[:200]}'
                 return jsonify({'status': 'error', 'message': error_msg})
 
-        adsb_using_service = True
-        adsb_active_device = device  # Track which device is being used
-        thread = threading.Thread(target=parse_sbs_stream, args=(f'localhost:{ADSB_SBS_PORT}',), daemon=True)
-        thread.start()
-
-        return jsonify({'status': 'started', 'message': 'ADS-B tracking started', 'device': device})
+        adsb_using_service = True
+        adsb_active_device = device  # Track which device is being used
+        thread = threading.Thread(target=parse_sbs_stream, args=(f'localhost:{ADSB_SBS_PORT}',), daemon=True)
+        thread.start()
+
+        session = _record_session_start(
+            device_index=device,
+            sdr_type=sdr_type.value,
+            remote_host=None,
+            remote_port=None,
+            start_source=start_source,
+            started_by=started_by,
+        )
+        return jsonify({
+            'status': 'started',
+            'message': 'ADS-B tracking started',
+            'device': device,
+            'session': session
+        })
     except Exception as e:
         return jsonify({'status': 'error', 'message': str(e)})
 
 
 @adsb_bp.route('/stop', methods=['POST'])
-def stop_adsb():
-    """Stop ADS-B tracking."""
-    global adsb_using_service, adsb_active_device
-
-    with app_module.adsb_lock:
-        if app_module.adsb_process:
-            try:
+def stop_adsb():
+    """Stop ADS-B tracking."""
+    global adsb_using_service, adsb_active_device
+    data = request.json or {}
+    stop_source = data.get('source')
+    stopped_by = request.remote_addr
+
+    with app_module.adsb_lock:
+        if app_module.adsb_process:
+            try:
                 # Kill the entire process group to ensure all child processes are terminated
                 pgid = os.getpgid(app_module.adsb_process.pid)
                 os.killpg(pgid, 15)  # SIGTERM
@@ -463,12 +769,13 @@ def stop_adsb():
                     pass
             app_module.adsb_process = None
             logger.info("ADS-B process stopped")
-        adsb_using_service = False
-        adsb_active_device = None
-
-    app_module.adsb_aircraft.clear()
-    _looked_up_icaos.clear()
-    return jsonify({'status': 'stopped'})
+        adsb_using_service = False
+        adsb_active_device = None
+
+    app_module.adsb_aircraft.clear()
+    _looked_up_icaos.clear()
+    session = _record_session_stop(stop_source=stop_source, stopped_by=stopped_by)
+    return jsonify({'status': 'stopped', 'session': session})
 
 
 @adsb_bp.route('/stream')
@@ -494,10 +801,165 @@ def stream_adsb():
     return response
 
 
-@adsb_bp.route('/dashboard')
-def adsb_dashboard():
-    """Popout ADS-B dashboard."""
-    return render_template('adsb_dashboard.html')
+@adsb_bp.route('/dashboard')
+def adsb_dashboard():
+    """Popout ADS-B dashboard."""
+    return render_template('adsb_dashboard.html')
+
+
+@adsb_bp.route('/history')
+def adsb_history():
+    """ADS-B history reporting dashboard."""
+    resp = make_response(render_template('adsb_history.html', history_enabled=ADSB_HISTORY_ENABLED))
+    resp.headers['Cache-Control'] = 'no-store'
+    return resp
+
+
+@adsb_bp.route('/history/summary')
+def adsb_history_summary():
+    """Summary stats for ADS-B history window."""
+    if not ADSB_HISTORY_ENABLED:
+        return jsonify({'error': 'ADS-B history is disabled'}), 503
+    _ensure_history_schema()
+
+    since_minutes = _parse_int_param(request.args.get('since_minutes'), 60, 1, 10080)
+    window = f'{since_minutes} minutes'
+
+    sql = """
+        SELECT
+            (SELECT COUNT(*) FROM adsb_messages WHERE received_at >= NOW() - INTERVAL %s) AS message_count,
+            (SELECT COUNT(*) FROM adsb_snapshots WHERE captured_at >= NOW() - INTERVAL %s) AS snapshot_count,
+            (SELECT COUNT(DISTINCT icao) FROM adsb_snapshots WHERE captured_at >= NOW() - INTERVAL %s) AS aircraft_count,
+            (SELECT MIN(captured_at) FROM adsb_snapshots WHERE captured_at >= NOW() - INTERVAL %s) AS first_seen,
+            (SELECT MAX(captured_at) FROM adsb_snapshots WHERE captured_at >= NOW() - INTERVAL %s) AS last_seen
+    """
+
+    try:
+        with _get_history_connection() as conn:
+            with conn.cursor(cursor_factory=RealDictCursor) as cur:
+                cur.execute(sql, (window, window, window, window, window))
+                row = cur.fetchone() or {}
+        return jsonify(row)
+    except Exception as exc:
+        logger.warning("ADS-B history summary failed: %s", exc)
+        return jsonify({'error': 'History database unavailable'}), 503
+
+
+@adsb_bp.route('/history/aircraft')
+def adsb_history_aircraft():
+    """List latest aircraft snapshots for a time window."""
+    if not ADSB_HISTORY_ENABLED:
+        return jsonify({'error': 'ADS-B history is disabled'}), 503
+    _ensure_history_schema()
+
+    since_minutes = _parse_int_param(request.args.get('since_minutes'), 60, 1, 10080)
+    limit = _parse_int_param(request.args.get('limit'), 200, 1, 2000)
+    search = (request.args.get('search') or '').strip()
+    window = f'{since_minutes} minutes'
+    pattern = f'%{search}%'
+
+    sql = """
+        SELECT *
+        FROM (
+            SELECT DISTINCT ON (icao)
+                icao,
+                callsign,
+                registration,
+                type_code,
+                type_desc,
+                altitude,
+                speed,
+                heading,
+                vertical_rate,
+                lat,
+                lon,
+                squawk,
+                captured_at AS last_seen
+            FROM adsb_snapshots
+            WHERE captured_at >= NOW() - INTERVAL %s
+              AND (%s = '' OR icao ILIKE %s OR callsign ILIKE %s OR registration ILIKE %s)
+            ORDER BY icao, captured_at DESC
+        ) latest
+        ORDER BY last_seen DESC
+        LIMIT %s
+    """
+
+    try:
+        with _get_history_connection() as conn:
+            with conn.cursor(cursor_factory=RealDictCursor) as cur:
+                cur.execute(sql, (window, search, pattern, pattern, pattern, limit))
+                rows = cur.fetchall()
+        return jsonify({'aircraft': rows, 'count': len(rows)})
+    except Exception as exc:
+        logger.warning("ADS-B history aircraft query failed: %s", exc)
+        return jsonify({'error': 'History database unavailable'}), 503
+
+
+@adsb_bp.route('/history/timeline')
+def adsb_history_timeline():
+    """Timeline snapshots for a specific aircraft."""
+    if not ADSB_HISTORY_ENABLED:
+        return jsonify({'error': 'ADS-B history is disabled'}), 503
+    _ensure_history_schema()
+
+    icao = (request.args.get('icao') or '').strip().upper()
+    if not icao:
+        return jsonify({'error': 'icao is required'}), 400
+
+    since_minutes = _parse_int_param(request.args.get('since_minutes'), 60, 1, 10080)
+    limit = _parse_int_param(request.args.get('limit'), 2000, 1, 20000)
+    window = f'{since_minutes} minutes'
+
+    sql = """
+        SELECT captured_at, altitude, speed, heading, vertical_rate, lat, lon, squawk
+        FROM adsb_snapshots
+        WHERE icao = %s
+          AND captured_at >= NOW() - INTERVAL %s
+        ORDER BY captured_at ASC
+        LIMIT %s
+    """
+
+    try:
+        with _get_history_connection() as conn:
+            with conn.cursor(cursor_factory=RealDictCursor) as cur:
+                cur.execute(sql, (icao, window, limit))
+                rows = cur.fetchall()
+        return jsonify({'icao': icao, 'timeline': rows, 'count': len(rows)})
+    except Exception as exc:
+        logger.warning("ADS-B history timeline query failed: %s", exc)
+        return jsonify({'error': 'History database unavailable'}), 503
+
+
+@adsb_bp.route('/history/messages')
+def adsb_history_messages():
+    """Raw message history for a specific aircraft."""
+    if not ADSB_HISTORY_ENABLED:
+        return jsonify({'error': 'ADS-B history is disabled'}), 503
+    _ensure_history_schema()
+
+    icao = (request.args.get('icao') or '').strip().upper()
+    since_minutes = _parse_int_param(request.args.get('since_minutes'), 30, 1, 10080)
+    limit = _parse_int_param(request.args.get('limit'), 200, 1, 2000)
+    window = f'{since_minutes} minutes'
+
+    sql = """
+        SELECT received_at, msg_type, callsign, altitude, speed, heading, vertical_rate, lat, lon, squawk
+        FROM adsb_messages
+        WHERE received_at >= NOW() - INTERVAL %s
+          AND (%s = '' OR icao = %s)
+        ORDER BY received_at DESC
+        LIMIT %s
+    """
+
+    try:
+        with _get_history_connection() as conn:
+            with conn.cursor(cursor_factory=RealDictCursor) as cur:
+                cur.execute(sql, (window, icao, icao, limit))
+                rows = cur.fetchall()
+        return jsonify({'icao': icao, 'messages': rows, 'count': len(rows)})
+    except Exception as exc:
+        logger.warning("ADS-B history message query failed: %s", exc)
+        return jsonify({'error': 'History database unavailable'}), 503
 
 
 # ============================================

static/css/adsb_history.css

@@ -0,0 +1,615 @@
+* {
+    margin: 0;
+    padding: 0;
+    box-sizing: border-box;
+}
+
+:root {
+    --bg-dark: #0a0c10;
+    --bg-panel: #0f1218;
+    --bg-card: #141a24;
+    --border-color: #1f2937;
+    --border-glow: rgba(74, 158, 255, 0.6);
+    --text-primary: #e8eaed;
+    --text-secondary: #9ca3af;
+    --text-dim: #4b5563;
+    --accent-cyan: #4a9eff;
+    --accent-green: #22c55e;
+    --accent-amber: #d4a853;
+    --grid-line: rgba(74, 158, 255, 0.08);
+}
+
+body {
+    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
+    background: var(--bg-dark);
+    color: var(--text-primary);
+    min-height: 100vh;
+}
+
+.mono {
+    font-family: 'JetBrains Mono', monospace;
+}
+
+.radar-bg {
+    position: fixed;
+    inset: 0;
+    background-image:
+        linear-gradient(var(--grid-line) 1px, transparent 1px),
+        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
+    background-size: 50px 50px;
+    pointer-events: none;
+    z-index: 0;
+}
+
+.scanline {
+    position: fixed;
+    top: 0;
+    left: 0;
+    right: 0;
+    height: 2px;
+    background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
+    animation: scan 6s linear infinite;
+    pointer-events: none;
+    z-index: 1;
+    opacity: 0.3;
+}
+
+@keyframes scan {
+    0% { top: -4px; }
+    100% { top: 100vh; }
+}
+
+.header {
+    position: relative;
+    z-index: 2;
+    padding: 12px 20px;
+    background: var(--bg-panel);
+    border-bottom: 1px solid var(--border-color);
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    flex-wrap: wrap;
+    gap: 12px;
+}
+
+.logo {
+    font-size: 18px;
+    font-weight: 700;
+    letter-spacing: 2px;
+    text-transform: uppercase;
+}
+
+.logo span {
+    color: var(--text-secondary);
+    font-weight: 400;
+    font-size: 12px;
+    margin-left: 10px;
+    letter-spacing: 1px;
+}
+
+.status-bar {
+    display: flex;
+    align-items: center;
+    gap: 12px;
+    font-family: 'JetBrains Mono', monospace;
+    font-size: 11px;
+}
+
+.back-link {
+    color: var(--accent-cyan);
+    text-decoration: none;
+    font-size: 11px;
+    padding: 6px 12px;
+    border: 1px solid var(--accent-cyan);
+    border-radius: 4px;
+}
+
+.history-shell {
+    position: relative;
+    z-index: 2;
+    padding: 16px 18px 28px;
+    display: flex;
+    flex-direction: column;
+    gap: 16px;
+}
+
+.summary-strip {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
+    gap: 12px;
+}
+
+.session-strip {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
+    gap: 14px;
+    align-items: center;
+    background: linear-gradient(120deg, rgba(15, 18, 24, 0.95), rgba(20, 26, 36, 0.95));
+    border: 1px solid var(--border-color);
+    border-radius: 12px;
+    padding: 14px 16px;
+    box-shadow: 0 0 18px rgba(0, 0, 0, 0.35);
+}
+
+.session-status {
+    display: flex;
+    align-items: center;
+    gap: 12px;
+}
+
+.status-dot {
+    width: 12px;
+    height: 12px;
+    border-radius: 50%;
+    background: var(--text-dim);
+    box-shadow: 0 0 12px rgba(75, 85, 99, 0.6);
+}
+
+.status-dot.active {
+    background: var(--accent-green);
+    box-shadow: 0 0 14px rgba(34, 197, 94, 0.8);
+}
+
+.session-label {
+    font-size: 10px;
+    color: var(--text-secondary);
+    text-transform: uppercase;
+    letter-spacing: 1.2px;
+}
+
+.session-value {
+    font-size: 14px;
+    font-weight: 600;
+}
+
+.session-metric {
+    display: flex;
+    flex-direction: column;
+    gap: 6px;
+}
+
+#sessionNotice {
+    color: var(--accent-cyan);
+}
+
+.session-controls {
+    display: flex;
+    gap: 10px;
+    align-items: center;
+    justify-content: flex-end;
+}
+
+.session-controls select {
+    background: var(--bg-dark);
+    border: 1px solid var(--border-color);
+    color: var(--text-primary);
+    padding: 8px 10px;
+    border-radius: 6px;
+    font-size: 12px;
+    min-width: 180px;
+}
+
+.primary-btn.stop {
+    background: var(--accent-amber);
+    color: #0a0c10;
+}
+
+.summary-card {
+    background: var(--bg-card);
+    border: 1px solid var(--border-color);
+    border-radius: 10px;
+    padding: 14px 16px;
+    box-shadow: 0 0 14px rgba(0, 0, 0, 0.3);
+}
+
+.summary-label {
+    font-size: 11px;
+    color: var(--text-secondary);
+    text-transform: uppercase;
+    letter-spacing: 1.3px;
+    margin-bottom: 6px;
+}
+
+.summary-value {
+    font-size: 18px;
+    font-weight: 600;
+    color: var(--text-primary);
+}
+
+.controls {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 14px;
+    align-items: flex-end;
+    background: var(--bg-panel);
+    border: 1px solid var(--border-color);
+    border-radius: 10px;
+    padding: 14px 16px;
+}
+
+.control-group {
+    display: flex;
+    flex-direction: column;
+    gap: 6px;
+}
+
+.control-group label {
+    font-size: 10px;
+    color: var(--text-secondary);
+    text-transform: uppercase;
+    letter-spacing: 1.2px;
+}
+
+.control-group input,
+.control-group select {
+    background: var(--bg-dark);
+    border: 1px solid var(--border-color);
+    color: var(--text-primary);
+    padding: 8px 10px;
+    border-radius: 6px;
+    font-size: 12px;
+    min-width: 160px;
+}
+
+.primary-btn {
+    background: var(--accent-cyan);
+    border: none;
+    color: #0a0c10;
+    font-weight: 600;
+    padding: 10px 18px;
+    border-radius: 6px;
+    cursor: pointer;
+    transition: transform 0.2s ease, box-shadow 0.2s ease;
+}
+
+.primary-btn:hover {
+    transform: translateY(-1px);
+    box-shadow: 0 6px 14px rgba(74, 158, 255, 0.3);
+}
+
+.status-pill {
+    font-family: 'JetBrains Mono', monospace;
+    font-size: 11px;
+    padding: 8px 12px;
+    border-radius: 999px;
+    border: 1px solid var(--accent-amber);
+    color: var(--accent-amber);
+    text-transform: uppercase;
+    letter-spacing: 1px;
+}
+
+.content-grid {
+    display: grid;
+    grid-template-columns: minmax(300px, 1fr) minmax(320px, 1fr);
+    gap: 16px;
+}
+
+.panel {
+    background: var(--bg-panel);
+    border: 1px solid var(--border-color);
+    border-radius: 12px;
+    display: flex;
+    flex-direction: column;
+    min-height: 420px;
+}
+
+.panel-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 12px 16px;
+    border-bottom: 1px solid var(--border-color);
+    font-size: 12px;
+    letter-spacing: 1.6px;
+    text-transform: uppercase;
+    color: var(--text-secondary);
+}
+
+.panel-meta {
+    font-family: 'JetBrains Mono', monospace;
+    font-size: 11px;
+    color: var(--accent-cyan);
+}
+
+.panel-body {
+    padding: 12px 14px;
+    flex: 1;
+    overflow: auto;
+}
+
+.aircraft-table {
+    width: 100%;
+    border-collapse: collapse;
+    font-size: 12px;
+}
+
+.aircraft-table th,
+.aircraft-table td {
+    padding: 8px 6px;
+    border-bottom: 1px solid rgba(31, 41, 55, 0.6);
+    text-align: left;
+}
+
+.aircraft-table th {
+    font-size: 10px;
+    color: var(--text-secondary);
+    text-transform: uppercase;
+    letter-spacing: 1px;
+}
+
+.aircraft-row {
+    cursor: pointer;
+    transition: background 0.15s ease;
+}
+
+.aircraft-row:hover {
+    background: rgba(74, 158, 255, 0.1);
+}
+
+.mono {
+    font-family: 'JetBrains Mono', monospace;
+}
+
+.empty-row td,
+.empty-row {
+    color: var(--text-dim);
+    text-align: center;
+    padding: 18px 10px;
+}
+
+.detail-card {
+    padding: 12px 14px;
+    background: var(--bg-card);
+    border: 1px solid var(--border-color);
+    border-radius: 10px;
+    margin-bottom: 12px;
+}
+
+.detail-title {
+    font-weight: 600;
+    font-size: 14px;
+    margin-bottom: 6px;
+}
+
+.detail-meta {
+    color: var(--text-secondary);
+    font-size: 12px;
+}
+
+.chart-card {
+    background: var(--bg-card);
+    border: 1px solid var(--border-color);
+    border-radius: 10px;
+    padding: 10px;
+    height: 180px;
+    display: flex;
+    flex-direction: column;
+    gap: 6px;
+}
+
+.chart-grid {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
+    gap: 10px;
+    margin-bottom: 12px;
+}
+
+.chart-title {
+    font-size: 10px;
+    color: var(--text-secondary);
+    text-transform: uppercase;
+    letter-spacing: 1px;
+}
+
+#altitudeChart {
+    width: 100%;
+    height: 100%;
+}
+
+#speedChart,
+#headingChart,
+#verticalChart {
+    width: 100%;
+    height: 100%;
+}
+
+.timeline-list {
+    display: flex;
+    flex-direction: column;
+    gap: 8px;
+    font-size: 12px;
+    color: var(--text-secondary);
+}
+
+.timeline-row {
+    display: flex;
+    justify-content: space-between;
+    gap: 8px;
+    padding: 6px 10px;
+    border: 1px solid rgba(31, 41, 55, 0.6);
+    border-radius: 6px;
+    background: rgba(15, 18, 24, 0.6);
+}
+
+.squawk-list {
+    margin-top: 10px;
+    display: flex;
+    flex-direction: column;
+    gap: 8px;
+    color: var(--text-secondary);
+}
+
+.modal-backdrop {
+    position: fixed;
+    inset: 0;
+    background: rgba(5, 8, 15, 0.65);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    opacity: 0;
+    pointer-events: none;
+    transition: opacity 0.2s ease;
+    z-index: 50;
+}
+
+.modal-backdrop.open {
+    opacity: 1;
+    pointer-events: auto;
+}
+
+.modal-card {
+    background: var(--bg-panel);
+    border: 1px solid var(--border-color);
+    border-radius: 14px;
+    padding: 18px;
+    width: min(820px, 92vw);
+    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
+    position: relative;
+}
+
+.modal-close {
+    position: absolute;
+    top: 12px;
+    right: 12px;
+    border: none;
+    background: transparent;
+    color: var(--text-secondary);
+    font-size: 24px;
+    cursor: pointer;
+}
+
+.modal-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    gap: 16px;
+    margin-bottom: 14px;
+}
+
+.modal-title {
+    font-size: 20px;
+    font-weight: 600;
+}
+
+.modal-subtitle {
+    color: var(--text-secondary);
+    font-size: 12px;
+    margin-top: 4px;
+}
+
+.modal-actions {
+    display: flex;
+    gap: 8px;
+}
+
+.nav-btn {
+    background: rgba(74, 158, 255, 0.15);
+    border: 1px solid rgba(74, 158, 255, 0.4);
+    color: var(--accent-cyan);
+    padding: 6px 10px;
+    border-radius: 6px;
+    cursor: pointer;
+}
+
+.modal-body {
+    display: grid;
+    grid-template-columns: 1fr 1.2fr;
+    gap: 16px;
+}
+
+.modal-photo {
+    background: var(--bg-card);
+    border-radius: 12px;
+    border: 1px solid var(--border-color);
+    min-height: 220px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    overflow: hidden;
+}
+
+.modal-photo img {
+    width: 100%;
+    height: 100%;
+    object-fit: cover;
+    display: none;
+}
+
+.photo-fallback {
+    color: var(--text-dim);
+    font-size: 12px;
+    text-transform: uppercase;
+    letter-spacing: 1px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    height: 100%;
+    width: 100%;
+}
+
+.modal-details {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    gap: 10px 18px;
+    font-size: 12px;
+}
+
+.detail-row {
+    display: flex;
+    flex-direction: column;
+    gap: 4px;
+    padding: 8px 10px;
+    background: rgba(20, 26, 36, 0.6);
+    border-radius: 8px;
+    border: 1px solid rgba(31, 41, 55, 0.6);
+}
+
+.detail-row span {
+    color: var(--text-secondary);
+    font-size: 10px;
+    text-transform: uppercase;
+    letter-spacing: 1px;
+}
+
+.detail-row strong {
+    font-size: 13px;
+}
+
+@media (max-width: 1024px) {
+    .content-grid {
+        grid-template-columns: 1fr;
+    }
+
+    .modal-body {
+        grid-template-columns: 1fr;
+    }
+}
+
+@media (max-width: 720px) {
+    .controls {
+        flex-direction: column;
+        align-items: stretch;
+    }
+
+    .control-group input,
+    .control-group select {
+        min-width: 100%;
+    }
+
+    .panel {
+        min-height: 320px;
+    }
+
+    .session-controls {
+        flex-direction: column;
+        align-items: stretch;
+    }
+
+    .modal-card {
+        padding: 16px;
+    }
+
+    .modal-details {
+        grid-template-columns: 1fr;
+    }
+}

templates/adsb_dashboard.html

@@ -74,9 +74,12 @@
             <button type="button" class="strip-btn" onclick="lookupSelectedFlight()" title="Lookup selected aircraft on FlightAware" id="flightLookupBtn" disabled>
                 🔗 Lookup
             </button>
-            <button type="button" class="strip-btn primary" onclick="generateReport()" title="Generate Session Report">
-                📊 Report
-            </button>
+            <button type="button" class="strip-btn primary" onclick="generateReport()" title="Generate Session Report">
+                📊 Report
+            </button>
+            <a class="strip-btn" href="/adsb/history" title="Open History Reporting">
+                📚 History
+            </a>
             <div class="strip-divider"></div>
             <div class="strip-status">
                 <div class="status-dot inactive" id="trackingDot"></div>
@@ -1959,11 +1962,14 @@ ACARS: ${r.statistics.acarsMessages} messages`;
             setInterval(cleanupOldAircraft, 10000);
             checkAdsbTools();
             checkAircraftDatabase();
-            checkDvbDriverConflict();
-
-            // Auto-connect to gpsd if available
-            autoConnectGps();
-        });
+            checkDvbDriverConflict();
+
+            // Auto-connect to gpsd if available
+            autoConnectGps();
+
+            // Sync tracking state if ADS-B already running
+            syncTrackingStatus();
+        });
 
         // Track which device is being used for ADS-B tracking
         let adsbActiveDevice = null;
@@ -2362,8 +2368,8 @@ sudo make install</code>
             return { host, port };
         }
 
-        async function toggleTracking() {
-            const btn = document.getElementById('startBtn');
+        async function toggleTracking() {
+            const btn = document.getElementById('startBtn');
 
             if (!isTracking) {
                 // Check for remote dump1090 config
@@ -2428,12 +2434,52 @@ sudo make install</code>
                 document.getElementById('trackingDot').classList.add('inactive');
                 document.getElementById('trackingStatus').textContent = 'STANDBY';
                 // Re-enable ADS-B device selector
-                document.getElementById('adsbDeviceSelect').disabled = false;
-            }
-        }
-
-        function startEventStream() {
-            if (eventSource) eventSource.close();
+                document.getElementById('adsbDeviceSelect').disabled = false;
+            }
+        }
+
+        async function syncTrackingStatus() {
+            try {
+                const response = await fetch('/adsb/session');
+                if (!response.ok) {
+                    return;
+                }
+                const data = await response.json();
+                if (!data.tracking_active) {
+                    return;
+                }
+                isTracking = true;
+                startEventStream();
+                drawRangeRings();
+                const startBtn = document.getElementById('startBtn');
+                startBtn.textContent = 'STOP';
+                startBtn.classList.add('active');
+                document.getElementById('trackingDot').classList.remove('inactive');
+                document.getElementById('trackingStatus').textContent = 'TRACKING';
+                document.getElementById('adsbDeviceSelect').disabled = true;
+
+                const session = data.session || {};
+                const startTime = session.started_at ? Date.parse(session.started_at) : null;
+                if (startTime) {
+                    stats.sessionStart = startTime;
+                }
+                startSessionTimer();
+
+                const sessionDevice = session.device_index;
+                if (sessionDevice !== null && sessionDevice !== undefined) {
+                    adsbActiveDevice = sessionDevice;
+                    const adsbSelect = document.getElementById('adsbDeviceSelect');
+                    if (adsbSelect) {
+                        adsbSelect.value = sessionDevice;
+                    }
+                }
+            } catch (err) {
+                console.warn('Failed to sync ADS-B tracking status', err);
+            }
+        }
+
+        function startEventStream() {
+            if (eventSource) eventSource.close();
 
             console.log('Starting ADS-B event stream...');
             eventSource = new EventSource('/adsb/stream');

templates/adsb_history.html

@@ -0,0 +1,762 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>ADS-B History // INTERCEPT</title>
+    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap" rel="stylesheet">
+    <link rel="stylesheet" href="{{ url_for('static', filename='css/responsive.css') }}">
+    <link rel="stylesheet" href="{{ url_for('static', filename='css/adsb_history.css') }}">
+</head>
+<body>
+    <div class="radar-bg"></div>
+    <div class="scanline"></div>
+
+    <header class="header">
+        <div class="logo">
+            ADS-B HISTORY
+            <span>// INTERCEPT REPORTING</span>
+        </div>
+        <div class="status-bar">
+            <a href="/adsb/dashboard" class="back-link">Live Radar</a>
+        </div>
+    </header>
+
+    <main class="history-shell">
+        <section class="summary-strip">
+            <div class="summary-card">
+                <div class="summary-label">Messages</div>
+                <div class="summary-value" id="summaryMessages">--</div>
+            </div>
+            <div class="summary-card">
+                <div class="summary-label">Snapshots</div>
+                <div class="summary-value" id="summarySnapshots">--</div>
+            </div>
+            <div class="summary-card">
+                <div class="summary-label">Aircraft</div>
+                <div class="summary-value" id="summaryAircraft">--</div>
+            </div>
+            <div class="summary-card">
+                <div class="summary-label">First Seen</div>
+                <div class="summary-value" id="summaryFirstSeen">--</div>
+            </div>
+            <div class="summary-card">
+                <div class="summary-label">Last Seen</div>
+                <div class="summary-value" id="summaryLastSeen">--</div>
+            </div>
+        </section>
+
+        <section class="session-strip">
+            <div class="session-status">
+                <div class="status-dot" id="sessionStatusDot"></div>
+                <div>
+                    <div class="session-label">Tracking</div>
+                    <div class="session-value" id="sessionStatusText">--</div>
+                </div>
+            </div>
+            <div class="session-metric">
+                <div class="session-label">Uptime</div>
+                <div class="session-value mono" id="sessionUptime">--:--:--</div>
+            </div>
+            <div class="session-metric">
+                <div class="session-label">Started</div>
+                <div class="session-value" id="sessionStartedAt">--</div>
+            </div>
+            <div class="session-metric">
+                <div class="session-label">Status</div>
+                <div class="session-value" id="sessionNotice">Ready</div>
+            </div>
+            <div class="session-controls">
+                <select id="sessionDeviceSelect"></select>
+                <button class="primary-btn" id="sessionToggleBtn" type="button" onclick="toggleSession()">Start Tracking</button>
+            </div>
+        </section>
+
+        <section class="controls">
+            <div class="control-group">
+                <label for="windowSelect">Window</label>
+                <select id="windowSelect">
+                    <option value="15">15 minutes</option>
+                    <option value="60" selected>1 hour</option>
+                    <option value="360">6 hours</option>
+                    <option value="1440">24 hours</option>
+                    <option value="10080">7 days</option>
+                </select>
+            </div>
+            <div class="control-group">
+                <label for="searchInput">Search</label>
+                <input type="text" id="searchInput" placeholder="ICAO / callsign / registration">
+            </div>
+            <div class="control-group">
+                <label for="limitSelect">Limit</label>
+                <select id="limitSelect">
+                    <option value="100">100</option>
+                    <option value="200" selected>200</option>
+                    <option value="500">500</option>
+                    <option value="1000">1000</option>
+                </select>
+            </div>
+            <button class="primary-btn" id="refreshBtn">Refresh</button>
+            <div class="status-pill" id="historyStatus">
+                {% if history_enabled %}
+                HISTORY ONLINE
+                {% else %}
+                HISTORY DISABLED
+                {% endif %}
+            </div>
+        </section>
+
+        <section class="content-grid">
+            <div class="panel aircraft-panel">
+                <div class="panel-header">
+                    <span>RECENT AIRCRAFT</span>
+                    <span class="panel-meta" id="aircraftCount">0</span>
+                </div>
+                <div class="panel-body">
+                    <table class="aircraft-table">
+                        <thead>
+                            <tr>
+                                <th>ICAO</th>
+                                <th>Callsign</th>
+                                <th>Alt</th>
+                                <th>Speed</th>
+                                <th>Last Seen</th>
+                            </tr>
+                        </thead>
+                        <tbody id="aircraftTableBody">
+                            <tr class="empty-row">
+                                <td colspan="5">No aircraft in this window</td>
+                            </tr>
+                        </tbody>
+                    </table>
+                </div>
+            </div>
+
+            <div class="panel detail-panel">
+                <div class="panel-header">
+                    <span>DETAIL TIMELINE</span>
+                    <span class="panel-meta" id="detailIcao">--</span>
+                </div>
+                <div class="panel-body">
+                    <div class="detail-card">
+                        <div class="detail-title" id="detailTitle">Select an aircraft</div>
+                        <div class="detail-meta" id="detailMeta">---</div>
+                    </div>
+                    <div class="chart-grid">
+                        <div class="chart-card">
+                            <div class="chart-title">Altitude (ft)</div>
+                            <canvas id="altitudeChart"></canvas>
+                        </div>
+                        <div class="chart-card">
+                            <div class="chart-title">Speed (kt)</div>
+                            <canvas id="speedChart"></canvas>
+                        </div>
+                        <div class="chart-card">
+                            <div class="chart-title">Heading (deg)</div>
+                            <canvas id="headingChart"></canvas>
+                        </div>
+                        <div class="chart-card">
+                            <div class="chart-title">Vertical Rate (fpm)</div>
+                            <canvas id="verticalChart"></canvas>
+                        </div>
+                    </div>
+                    <div class="timeline-list" id="timelineList">
+                        <div class="empty-row">No timeline data</div>
+                    </div>
+                    <div class="squawk-list" id="squawkList">
+                        <div class="empty-row">No squawk changes</div>
+                    </div>
+                </div>
+            </div>
+        </section>
+    </main>
+
+    <div class="modal-backdrop" id="aircraftModalBackdrop" aria-hidden="true">
+        <div class="modal-card" role="dialog" aria-modal="true">
+            <button class="modal-close" id="aircraftModalClose" aria-label="Close">×</button>
+            <div class="modal-header">
+                <div>
+                    <div class="modal-title" id="modalTitle">Aircraft</div>
+                    <div class="modal-subtitle" id="modalSubtitle">--</div>
+                </div>
+                <div class="modal-actions">
+                    <button class="nav-btn" id="modalPrev">◀</button>
+                    <button class="nav-btn" id="modalNext">▶</button>
+                </div>
+            </div>
+            <div class="modal-body">
+                <div class="modal-photo">
+                    <img id="modalPhoto" alt="Aircraft photo">
+                    <div class="photo-fallback" id="modalPhotoFallback">No photo</div>
+                </div>
+                <div class="modal-details">
+                    <div class="detail-row">
+                        <span>ICAO</span>
+                        <strong id="modalIcao">--</strong>
+                    </div>
+                    <div class="detail-row">
+                        <span>Callsign</span>
+                        <strong id="modalCallsign">--</strong>
+                    </div>
+                    <div class="detail-row">
+                        <span>Registration</span>
+                        <strong id="modalRegistration">--</strong>
+                    </div>
+                    <div class="detail-row">
+                        <span>Type</span>
+                        <strong id="modalType">--</strong>
+                    </div>
+                    <div class="detail-row">
+                        <span>Altitude</span>
+                        <strong id="modalAltitude">--</strong>
+                    </div>
+                    <div class="detail-row">
+                        <span>Speed</span>
+                        <strong id="modalSpeed">--</strong>
+                    </div>
+                    <div class="detail-row">
+                        <span>Heading</span>
+                        <strong id="modalHeading">--</strong>
+                    </div>
+                    <div class="detail-row">
+                        <span>Vertical Rate</span>
+                        <strong id="modalVerticalRate">--</strong>
+                    </div>
+                    <div class="detail-row">
+                        <span>Squawk</span>
+                        <strong id="modalSquawk">--</strong>
+                    </div>
+                    <div class="detail-row">
+                        <span>Position</span>
+                        <strong id="modalPosition">--</strong>
+                    </div>
+                    <div class="detail-row">
+                        <span>Last Seen</span>
+                        <strong id="modalLastSeen">--</strong>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+
+    <script>
+        const historyEnabled = {{ 'true' if history_enabled else 'false' }};
+
+        const summaryMessages = document.getElementById('summaryMessages');
+        const summarySnapshots = document.getElementById('summarySnapshots');
+        const summaryAircraft = document.getElementById('summaryAircraft');
+        const summaryFirstSeen = document.getElementById('summaryFirstSeen');
+        const summaryLastSeen = document.getElementById('summaryLastSeen');
+        const aircraftTableBody = document.getElementById('aircraftTableBody');
+        const aircraftCount = document.getElementById('aircraftCount');
+        const detailIcao = document.getElementById('detailIcao');
+        const detailTitle = document.getElementById('detailTitle');
+        const detailMeta = document.getElementById('detailMeta');
+        const timelineList = document.getElementById('timelineList');
+        const squawkList = document.getElementById('squawkList');
+        const altitudeChart = document.getElementById('altitudeChart');
+        const speedChart = document.getElementById('speedChart');
+        const headingChart = document.getElementById('headingChart');
+        const verticalChart = document.getElementById('verticalChart');
+        const refreshBtn = document.getElementById('refreshBtn');
+        const sessionStatusDot = document.getElementById('sessionStatusDot');
+        const sessionStatusText = document.getElementById('sessionStatusText');
+        const sessionUptime = document.getElementById('sessionUptime');
+        const sessionStartedAt = document.getElementById('sessionStartedAt');
+        const sessionNotice = document.getElementById('sessionNotice');
+        const sessionDeviceSelect = document.getElementById('sessionDeviceSelect');
+        const sessionToggleBtn = document.getElementById('sessionToggleBtn');
+
+        const windowSelect = document.getElementById('windowSelect');
+        const searchInput = document.getElementById('searchInput');
+        const limitSelect = document.getElementById('limitSelect');
+
+        let selectedIcao = '';
+        let sessionStartAt = null;
+        let sessionTimer = null;
+        let recentAircraft = [];
+        let selectedIndex = -1;
+        const photoCache = new Map();
+        const modalBackdrop = document.getElementById('aircraftModalBackdrop');
+        const modalClose = document.getElementById('aircraftModalClose');
+        const modalPrev = document.getElementById('modalPrev');
+        const modalNext = document.getElementById('modalNext');
+
+        const modalTitle = document.getElementById('modalTitle');
+        const modalSubtitle = document.getElementById('modalSubtitle');
+        const modalPhoto = document.getElementById('modalPhoto');
+        const modalPhotoFallback = document.getElementById('modalPhotoFallback');
+        const modalIcao = document.getElementById('modalIcao');
+        const modalCallsign = document.getElementById('modalCallsign');
+        const modalRegistration = document.getElementById('modalRegistration');
+        const modalType = document.getElementById('modalType');
+        const modalAltitude = document.getElementById('modalAltitude');
+        const modalSpeed = document.getElementById('modalSpeed');
+        const modalHeading = document.getElementById('modalHeading');
+        const modalVerticalRate = document.getElementById('modalVerticalRate');
+        const modalSquawk = document.getElementById('modalSquawk');
+        const modalPosition = document.getElementById('modalPosition');
+        const modalLastSeen = document.getElementById('modalLastSeen');
+
+        function formatNumber(value) {
+            if (value === null || value === undefined) {
+                return '--';
+            }
+            return Number(value).toLocaleString();
+        }
+
+        function formatTime(value) {
+            if (!value) {
+                return '--';
+            }
+            const date = new Date(value);
+            if (Number.isNaN(date.getTime())) {
+                return '--';
+            }
+            return date.toLocaleTimeString(undefined, { hour: '2-digit', minute: '2-digit', second: '2-digit' });
+        }
+
+        function formatDateTime(value) {
+            if (!value) {
+                return '--';
+            }
+            const date = new Date(value);
+            if (Number.isNaN(date.getTime())) {
+                return '--';
+            }
+            return date.toLocaleString();
+        }
+
+        function valueOrDash(value) {
+            if (value === null || value === undefined || value === '') {
+                return '--';
+            }
+            return value;
+        }
+
+        function formatUptime(seconds) {
+            if (seconds === null || seconds === undefined) {
+                return '--:--:--';
+            }
+            const hrs = Math.floor(seconds / 3600);
+            const mins = Math.floor((seconds % 3600) / 60);
+            const secs = Math.floor(seconds % 60);
+            return `${hrs.toString().padStart(2, '0')}:${mins.toString().padStart(2, '0')}:${secs.toString().padStart(2, '0')}`;
+        }
+
+        async function loadSummary() {
+            const sinceMinutes = windowSelect.value;
+            const resp = await fetch(`/adsb/history/summary?since_minutes=${sinceMinutes}`);
+            if (!resp.ok) {
+                return;
+            }
+            const data = await resp.json();
+            summaryMessages.textContent = formatNumber(data.message_count);
+            summarySnapshots.textContent = formatNumber(data.snapshot_count);
+            summaryAircraft.textContent = formatNumber(data.aircraft_count);
+            summaryFirstSeen.textContent = formatTime(data.first_seen);
+            summaryLastSeen.textContent = formatTime(data.last_seen);
+        }
+
+        async function loadAircraft() {
+            const sinceMinutes = windowSelect.value;
+            const limit = limitSelect.value;
+            const search = encodeURIComponent(searchInput.value.trim());
+            const resp = await fetch(`/adsb/history/aircraft?since_minutes=${sinceMinutes}&limit=${limit}&search=${search}`);
+            if (!resp.ok) {
+                aircraftTableBody.innerHTML = '<tr class="empty-row"><td colspan="5">History database unavailable</td></tr>';
+                return;
+            }
+            const data = await resp.json();
+            const rows = data.aircraft || [];
+            recentAircraft = rows;
+            aircraftCount.textContent = rows.length;
+            if (!rows.length) {
+                aircraftTableBody.innerHTML = '<tr class="empty-row"><td colspan="5">No aircraft in this window</td></tr>';
+                return;
+            }
+            aircraftTableBody.innerHTML = rows.map(row => `
+                <tr class="aircraft-row" data-icao="${row.icao}">
+                    <td class="mono">${row.icao}</td>
+                    <td>${valueOrDash(row.callsign)}</td>
+                    <td>${valueOrDash(row.altitude)}</td>
+                    <td>${valueOrDash(row.speed)}</td>
+                    <td>${formatTime(row.last_seen)}</td>
+                </tr>
+            `).join('');
+
+            document.querySelectorAll('.aircraft-row').forEach((row, index) => {
+                row.addEventListener('click', () => {
+                    selectAircraft(row.dataset.icao);
+                    openModal(index);
+                });
+            });
+        }
+
+        async function selectAircraft(icao) {
+            selectedIcao = icao;
+            detailIcao.textContent = icao || '--';
+            if (!icao) {
+                detailTitle.textContent = 'Select an aircraft';
+                detailMeta.textContent = '---';
+                timelineList.innerHTML = '<div class="empty-row">No timeline data</div>';
+                squawkList.innerHTML = '<div class="empty-row">No squawk changes</div>';
+                drawMetricChart(altitudeChart, [], 'altitude', 'Altitude', 'ft');
+                drawMetricChart(speedChart, [], 'speed', 'Speed', 'kt');
+                drawMetricChart(headingChart, [], 'heading', 'Heading', 'deg');
+                drawMetricChart(verticalChart, [], 'vertical_rate', 'Vertical Rate', 'fpm');
+                return;
+            }
+            await loadTimeline(icao);
+        }
+
+        async function loadTimeline(icao) {
+            const sinceMinutes = windowSelect.value;
+            const resp = await fetch(`/adsb/history/timeline?icao=${icao}&since_minutes=${sinceMinutes}`);
+            if (!resp.ok) {
+                timelineList.innerHTML = '<div class="empty-row">Timeline unavailable</div>';
+                return;
+            }
+            const data = await resp.json();
+            const timeline = data.timeline || [];
+            if (!timeline.length) {
+                timelineList.innerHTML = '<div class="empty-row">No timeline data</div>';
+                squawkList.innerHTML = '<div class="empty-row">No squawk changes</div>';
+                drawMetricChart(altitudeChart, [], 'altitude', 'Altitude', 'ft');
+                drawMetricChart(speedChart, [], 'speed', 'Speed', 'kt');
+                drawMetricChart(headingChart, [], 'heading', 'Heading', 'deg');
+                drawMetricChart(verticalChart, [], 'vertical_rate', 'Vertical Rate', 'fpm');
+                return;
+            }
+            const latest = timeline[timeline.length - 1];
+            detailTitle.textContent = `${icao} Timeline`;
+            detailMeta.textContent = `Alt ${valueOrDash(latest.altitude)} ft | Spd ${valueOrDash(latest.speed)} kt | Head ${valueOrDash(latest.heading)}`;
+            timelineList.innerHTML = timeline.slice(-30).reverse().map(point => `
+                <div class="timeline-row">
+                    <span>${formatTime(point.captured_at)}</span>
+                    <span>Alt ${valueOrDash(point.altitude)} ft</span>
+                    <span>Spd ${valueOrDash(point.speed)} kt</span>
+                    <span>Hdg ${valueOrDash(point.heading)}</span>
+                    <span>V/S ${valueOrDash(point.vertical_rate)} fpm</span>
+                </div>
+            `).join('');
+            updateSquawkChanges(timeline);
+            drawMetricChart(altitudeChart, timeline, 'altitude', 'Altitude', 'ft');
+            drawMetricChart(speedChart, timeline, 'speed', 'Speed', 'kt');
+            drawMetricChart(headingChart, timeline, 'heading', 'Heading', 'deg');
+            drawMetricChart(verticalChart, timeline, 'vertical_rate', 'Vertical Rate', 'fpm');
+        }
+
+        function drawMetricChart(canvas, points, field, label, unit) {
+            const ctx = canvas.getContext('2d');
+            const width = canvas.clientWidth;
+            const height = canvas.clientHeight;
+            canvas.width = width;
+            canvas.height = height;
+            ctx.clearRect(0, 0, width, height);
+
+            if (!points.length) {
+                ctx.fillStyle = 'rgba(156, 163, 175, 0.6)';
+                ctx.font = '12px "JetBrains Mono", monospace';
+                ctx.fillText(`No ${label.toLowerCase()} data`, 12, height / 2);
+                return;
+            }
+
+            const series = points.map(p => p[field]).filter(v => v !== null && v !== undefined);
+            if (!series.length) {
+                ctx.fillStyle = 'rgba(156, 163, 175, 0.6)';
+                ctx.font = '12px "JetBrains Mono", monospace';
+                ctx.fillText(`No ${label.toLowerCase()} data`, 12, height / 2);
+                return;
+            }
+
+            const minVal = Math.min(...series);
+            const maxVal = Math.max(...series);
+            const range = maxVal - minVal || 1;
+            const padding = 20;
+
+            ctx.strokeStyle = 'rgba(74, 158, 255, 0.4)';
+            ctx.lineWidth = 1;
+            ctx.beginPath();
+            ctx.moveTo(padding, padding);
+            ctx.lineTo(padding, height - padding);
+            ctx.lineTo(width - padding, height - padding);
+            ctx.stroke();
+
+            ctx.strokeStyle = 'rgba(74, 158, 255, 0.9)';
+            ctx.lineWidth = 2;
+            ctx.beginPath();
+            let started = false;
+            const span = Math.max(1, points.length - 1);
+            points.forEach((point, index) => {
+                if (point[field] === null || point[field] === undefined) {
+                    return;
+                }
+                const x = padding + (index / span) * (width - padding * 2);
+                const y = height - padding - ((point[field] - minVal) / range) * (height - padding * 2);
+                if (!started) {
+                    ctx.moveTo(x, y);
+                    started = true;
+                } else {
+                    ctx.lineTo(x, y);
+                }
+            });
+            if (started) {
+                ctx.stroke();
+            }
+
+            ctx.fillStyle = 'rgba(226, 232, 240, 0.8)';
+            ctx.font = '11px "JetBrains Mono", monospace';
+            ctx.fillText(`${maxVal} ${unit}`, 12, padding);
+            ctx.fillText(`${minVal} ${unit}`, 12, height - padding);
+        }
+
+        function updateSquawkChanges(points) {
+            const changes = [];
+            let lastSquawk = null;
+            points.forEach(point => {
+                if (point.squawk && point.squawk !== lastSquawk) {
+                    changes.push({ time: point.captured_at, squawk: point.squawk });
+                    lastSquawk = point.squawk;
+                }
+            });
+            if (!changes.length) {
+                squawkList.innerHTML = '<div class="empty-row">No squawk changes</div>';
+                return;
+            }
+            squawkList.innerHTML = changes.slice(-10).reverse().map(change => `
+                <div class="timeline-row">
+                    <span>${formatTime(change.time)}</span>
+                    <span>Squawk ${change.squawk}</span>
+                </div>
+            `).join('');
+        }
+
+        async function loadSessionDevices() {
+            if (!historyEnabled) {
+                sessionDeviceSelect.innerHTML = '<option value="0">History disabled</option>';
+                sessionDeviceSelect.disabled = true;
+                sessionToggleBtn.disabled = true;
+                return;
+            }
+            const resp = await fetch('/devices');
+            if (!resp.ok) {
+                sessionDeviceSelect.innerHTML = '<option value="0">No SDR</option>';
+                return;
+            }
+            const devices = await resp.json();
+            sessionDeviceSelect.innerHTML = '';
+            if (!devices.length) {
+                sessionDeviceSelect.innerHTML = '<option value="0">No SDR</option>';
+                sessionDeviceSelect.disabled = true;
+                return;
+            }
+            devices.forEach((dev, idx) => {
+                const index = dev.index !== undefined ? dev.index : idx;
+                const type = (dev.sdr_type || dev.driver || 'RTL-SDR').toUpperCase();
+                const serial = dev.serial ? ` (${dev.serial.slice(-4)})` : '';
+                const opt = document.createElement('option');
+                opt.value = index;
+                opt.textContent = `${type} #${index}${serial}`;
+                sessionDeviceSelect.appendChild(opt);
+            });
+            sessionDeviceSelect.disabled = false;
+        }
+
+        async function loadSessionStatus() {
+            const resp = await fetch('/adsb/session');
+            if (!resp.ok) {
+                sessionStatusText.textContent = 'UNKNOWN';
+                sessionStatusDot.classList.remove('active');
+                sessionNotice.textContent = 'Session unavailable';
+                return;
+            }
+            const data = await resp.json();
+            if (data.tracking_active) {
+                sessionStatusText.textContent = 'TRACKING';
+                sessionStatusDot.classList.add('active');
+                sessionToggleBtn.textContent = 'Stop Tracking';
+                sessionToggleBtn.classList.add('stop');
+                sessionNotice.textContent = 'Live';
+            } else {
+                sessionStatusText.textContent = 'STANDBY';
+                sessionStatusDot.classList.remove('active');
+                sessionToggleBtn.textContent = 'Start Tracking';
+                sessionToggleBtn.classList.remove('stop');
+                sessionNotice.textContent = 'Idle';
+            }
+            if (data.session && data.session.started_at) {
+                sessionStartAt = new Date(data.session.started_at);
+                sessionStartedAt.textContent = formatDateTime(data.session.started_at);
+                sessionUptime.textContent = formatUptime(data.uptime_seconds);
+            } else {
+                sessionStartAt = null;
+                sessionStartedAt.textContent = '--';
+                sessionUptime.textContent = '--:--:--';
+            }
+        }
+
+        function startSessionTimer() {
+            if (sessionTimer) {
+                clearInterval(sessionTimer);
+            }
+            sessionTimer = setInterval(() => {
+                if (!sessionStartAt) {
+                    sessionUptime.textContent = '--:--:--';
+                    return;
+                }
+                const seconds = Math.floor((Date.now() - sessionStartAt.getTime()) / 1000);
+                sessionUptime.textContent = formatUptime(seconds);
+            }, 1000);
+        }
+
+        async function toggleSession() {
+            if (!historyEnabled) {
+                return;
+            }
+            sessionToggleBtn.disabled = true;
+            sessionNotice.textContent = 'Working...';
+            if (sessionStatusText.textContent === 'TRACKING') {
+                const resp = await fetch('/adsb/stop', {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json' },
+                    credentials: 'same-origin',
+                    body: JSON.stringify({ source: 'adsb_history' })
+                });
+                if (!resp.ok) {
+                    sessionNotice.textContent = 'Stop failed';
+                }
+            } else {
+                const device = parseInt(sessionDeviceSelect.value, 10) || 0;
+                const resp = await fetch('/adsb/start', {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json' },
+                    credentials: 'same-origin',
+                    body: JSON.stringify({ device, source: 'adsb_history' })
+                });
+                if (!resp.ok) {
+                    sessionNotice.textContent = 'Start failed';
+                }
+            }
+            await loadSessionStatus();
+            sessionToggleBtn.disabled = false;
+        }
+
+        async function openModal(index) {
+            if (index < 0 || index >= recentAircraft.length) {
+                return;
+            }
+            selectedIndex = index;
+            const ac = recentAircraft[index];
+            modalTitle.textContent = ac.callsign || ac.icao || 'Aircraft';
+            modalSubtitle.textContent = `${valueOrDash(ac.registration)} • ${valueOrDash(ac.type_code)}`;
+            modalIcao.textContent = valueOrDash(ac.icao);
+            modalCallsign.textContent = valueOrDash(ac.callsign);
+            modalRegistration.textContent = valueOrDash(ac.registration);
+            modalType.textContent = [ac.type_desc, ac.type_code].filter(Boolean).join(' • ') || '--';
+            modalAltitude.textContent = ac.altitude ? `${ac.altitude} ft` : '--';
+            modalSpeed.textContent = ac.speed ? `${ac.speed} kt` : '--';
+            modalHeading.textContent = ac.heading !== null && ac.heading !== undefined ? `${ac.heading}°` : '--';
+            modalVerticalRate.textContent = ac.vertical_rate ? `${ac.vertical_rate} fpm` : '--';
+            modalSquawk.textContent = valueOrDash(ac.squawk);
+            if (ac.lat !== null && ac.lat !== undefined && ac.lon !== null && ac.lon !== undefined) {
+                modalPosition.textContent = `${ac.lat.toFixed(4)}, ${ac.lon.toFixed(4)}`;
+            } else {
+                modalPosition.textContent = '--';
+            }
+            modalLastSeen.textContent = formatDateTime(ac.last_seen);
+
+            await loadPhoto(ac.registration);
+            modalBackdrop.classList.add('open');
+        }
+
+        function closeModal() {
+            modalBackdrop.classList.remove('open');
+        }
+
+        async function loadPhoto(registration) {
+            if (!registration) {
+                modalPhoto.style.display = 'none';
+                modalPhotoFallback.style.display = 'flex';
+                return;
+            }
+            if (photoCache.has(registration)) {
+                const url = photoCache.get(registration);
+                if (url) {
+                    modalPhoto.src = url;
+                    modalPhoto.style.display = 'block';
+                    modalPhotoFallback.style.display = 'none';
+                } else {
+                    modalPhoto.style.display = 'none';
+                    modalPhotoFallback.style.display = 'flex';
+                }
+                return;
+            }
+            try {
+                const resp = await fetch(`/adsb/aircraft-photo/${encodeURIComponent(registration)}`);
+                const data = await resp.json();
+                const url = data && data.thumbnail;
+                photoCache.set(registration, url || null);
+                if (url) {
+                    modalPhoto.src = url;
+                    modalPhoto.onerror = () => {
+                        modalPhoto.style.display = 'none';
+                        modalPhotoFallback.style.display = 'flex';
+                    };
+                    modalPhoto.style.display = 'block';
+                    modalPhotoFallback.style.display = 'none';
+                } else {
+                    modalPhoto.style.display = 'none';
+                    modalPhotoFallback.style.display = 'flex';
+                }
+            } catch (err) {
+                modalPhoto.style.display = 'none';
+                modalPhotoFallback.style.display = 'flex';
+            }
+        }
+
+        function moveModal(offset) {
+            const nextIndex = selectedIndex + offset;
+            if (nextIndex < 0 || nextIndex >= recentAircraft.length) {
+                return;
+            }
+            openModal(nextIndex);
+        }
+
+        async function refreshAll() {
+            if (!historyEnabled) {
+                return;
+            }
+            await Promise.all([loadSummary(), loadAircraft(), loadSessionStatus()]);
+            if (selectedIcao) {
+                await loadTimeline(selectedIcao);
+            }
+        }
+
+        refreshBtn.addEventListener('click', refreshAll);
+        windowSelect.addEventListener('change', refreshAll);
+        limitSelect.addEventListener('change', refreshAll);
+        searchInput.addEventListener('input', () => {
+            clearTimeout(searchInput._debounce);
+            searchInput._debounce = setTimeout(refreshAll, 350);
+        });
+
+        refreshAll();
+        loadSessionDevices();
+        startSessionTimer();
+        modalClose.addEventListener('click', closeModal);
+        modalBackdrop.addEventListener('click', (event) => {
+            if (event.target === modalBackdrop) {
+                closeModal();
+            }
+        });
+        modalPrev.addEventListener('click', () => moveModal(-1));
+        modalNext.addEventListener('click', () => moveModal(1));
+        window.addEventListener('resize', () => {
+            if (selectedIcao) {
+                loadTimeline(selectedIcao);
+            }
+        });
+    </script>
+</body>
+</html>

utils/adsb_history.py

@@ -0,0 +1,397 @@
+"""ADS-B history persistence to PostgreSQL."""
+
+from __future__ import annotations
+
+import logging
+import queue
+import threading
+import time
+from datetime import datetime, timezone
+from typing import Iterable
+
+import psycopg2
+from psycopg2.extras import execute_values, Json
+
+from config import (
+    ADSB_DB_HOST,
+    ADSB_DB_NAME,
+    ADSB_DB_PASSWORD,
+    ADSB_DB_PORT,
+    ADSB_DB_USER,
+    ADSB_HISTORY_BATCH_SIZE,
+    ADSB_HISTORY_ENABLED,
+    ADSB_HISTORY_FLUSH_INTERVAL,
+    ADSB_HISTORY_QUEUE_SIZE,
+)
+
+logger = logging.getLogger('intercept.adsb_history')
+
+
+_MESSAGE_FIELDS = (
+    'received_at',
+    'msg_time',
+    'logged_time',
+    'icao',
+    'msg_type',
+    'callsign',
+    'altitude',
+    'speed',
+    'heading',
+    'vertical_rate',
+    'lat',
+    'lon',
+    'squawk',
+    'session_id',
+    'aircraft_id',
+    'flight_id',
+    'raw_line',
+    'source_host',
+)
+
+_MESSAGE_INSERT_SQL = f"""
+    INSERT INTO adsb_messages ({', '.join(_MESSAGE_FIELDS)})
+    VALUES %s
+"""
+
+_SNAPSHOT_FIELDS = (
+    'captured_at',
+    'icao',
+    'callsign',
+    'registration',
+    'type_code',
+    'type_desc',
+    'altitude',
+    'speed',
+    'heading',
+    'vertical_rate',
+    'lat',
+    'lon',
+    'squawk',
+    'source_host',
+    'snapshot',
+)
+
+_SNAPSHOT_INSERT_SQL = f"""
+    INSERT INTO adsb_snapshots ({', '.join(_SNAPSHOT_FIELDS)})
+    VALUES %s
+"""
+
+def _ensure_adsb_schema(conn: psycopg2.extensions.connection) -> None:
+    with conn.cursor() as cur:
+        cur.execute(
+            """
+            CREATE TABLE IF NOT EXISTS adsb_messages (
+                id BIGSERIAL PRIMARY KEY,
+                received_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+                msg_time TIMESTAMPTZ,
+                logged_time TIMESTAMPTZ,
+                icao TEXT NOT NULL,
+                msg_type SMALLINT,
+                callsign TEXT,
+                altitude INTEGER,
+                speed INTEGER,
+                heading INTEGER,
+                vertical_rate INTEGER,
+                lat DOUBLE PRECISION,
+                lon DOUBLE PRECISION,
+                squawk TEXT,
+                session_id TEXT,
+                aircraft_id TEXT,
+                flight_id TEXT,
+                raw_line TEXT,
+                source_host TEXT
+            )
+            """
+        )
+        cur.execute(
+            """
+            CREATE INDEX IF NOT EXISTS idx_adsb_messages_icao_time
+            ON adsb_messages (icao, received_at)
+            """
+        )
+        cur.execute(
+            """
+            CREATE INDEX IF NOT EXISTS idx_adsb_messages_received_at
+            ON adsb_messages (received_at)
+            """
+        )
+        cur.execute(
+            """
+            CREATE INDEX IF NOT EXISTS idx_adsb_messages_msg_time
+            ON adsb_messages (msg_time)
+            """
+        )
+        cur.execute(
+            """
+            CREATE TABLE IF NOT EXISTS adsb_snapshots (
+                id BIGSERIAL PRIMARY KEY,
+                captured_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+                icao TEXT NOT NULL,
+                callsign TEXT,
+                registration TEXT,
+                type_code TEXT,
+                type_desc TEXT,
+                altitude INTEGER,
+                speed INTEGER,
+                heading INTEGER,
+                vertical_rate INTEGER,
+                lat DOUBLE PRECISION,
+                lon DOUBLE PRECISION,
+                squawk TEXT,
+                source_host TEXT,
+                snapshot JSONB
+            )
+            """
+        )
+        cur.execute(
+            """
+            CREATE INDEX IF NOT EXISTS idx_adsb_snapshots_icao_time
+            ON adsb_snapshots (icao, captured_at)
+            """
+        )
+        cur.execute(
+            """
+            CREATE INDEX IF NOT EXISTS idx_adsb_snapshots_captured_at
+            ON adsb_snapshots (captured_at)
+            """
+        )
+        cur.execute(
+            """
+            CREATE TABLE IF NOT EXISTS adsb_sessions (
+                id BIGSERIAL PRIMARY KEY,
+                started_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+                ended_at TIMESTAMPTZ,
+                device_index INTEGER,
+                sdr_type TEXT,
+                remote_host TEXT,
+                remote_port INTEGER,
+                start_source TEXT,
+                stop_source TEXT,
+                started_by TEXT,
+                stopped_by TEXT,
+                notes TEXT
+            )
+            """
+        )
+        cur.execute(
+            """
+            CREATE INDEX IF NOT EXISTS idx_adsb_sessions_started_at
+            ON adsb_sessions (started_at)
+            """
+        )
+        cur.execute(
+            """
+            CREATE INDEX IF NOT EXISTS idx_adsb_sessions_active
+            ON adsb_sessions (ended_at)
+            """
+        )
+    conn.commit()
+
+
+def _make_dsn() -> str:
+    return (
+        f"host={ADSB_DB_HOST} port={ADSB_DB_PORT} dbname={ADSB_DB_NAME} "
+        f"user={ADSB_DB_USER} password={ADSB_DB_PASSWORD}"
+    )
+
+
+class AdsbHistoryWriter:
+    """Background writer for ADS-B history records."""
+
+    def __init__(self) -> None:
+        self.enabled = ADSB_HISTORY_ENABLED
+        self._queue: queue.Queue[dict] = queue.Queue(maxsize=ADSB_HISTORY_QUEUE_SIZE)
+        self._thread: threading.Thread | None = None
+        self._stop_event = threading.Event()
+        self._conn: psycopg2.extensions.connection | None = None
+        self._dropped = 0
+
+    def start(self) -> None:
+        if not self.enabled:
+            return
+        if self._thread and self._thread.is_alive():
+            return
+        self._thread = threading.Thread(target=self._run, name='adsb-history-writer', daemon=True)
+        self._thread.start()
+        logger.info("ADS-B history writer started")
+
+    def stop(self) -> None:
+        self._stop_event.set()
+
+    def enqueue(self, record: dict) -> None:
+        if not self.enabled:
+            return
+        if 'received_at' not in record or record['received_at'] is None:
+            record['received_at'] = datetime.now(timezone.utc)
+        try:
+            self._queue.put_nowait(record)
+        except queue.Full:
+            self._dropped += 1
+            if self._dropped % 1000 == 0:
+                logger.warning("ADS-B history queue full, dropped %d records", self._dropped)
+
+    def _run(self) -> None:
+        batch: list[dict] = []
+        last_flush = time.time()
+
+        while not self._stop_event.is_set():
+            timeout = max(0.0, ADSB_HISTORY_FLUSH_INTERVAL - (time.time() - last_flush))
+            try:
+                item = self._queue.get(timeout=timeout)
+                batch.append(item)
+            except queue.Empty:
+                pass
+
+            now = time.time()
+            if batch and (len(batch) >= ADSB_HISTORY_BATCH_SIZE or now - last_flush >= ADSB_HISTORY_FLUSH_INTERVAL):
+                if self._flush(batch):
+                    batch.clear()
+                    last_flush = now
+
+    def _ensure_connection(self) -> psycopg2.extensions.connection | None:
+        if self._conn:
+            return self._conn
+        try:
+            self._conn = psycopg2.connect(_make_dsn())
+            self._conn.autocommit = False
+            self._ensure_schema(self._conn)
+            return self._conn
+        except Exception as exc:
+            logger.warning("ADS-B history DB connection failed: %s", exc)
+            self._conn = None
+            return None
+
+    def _ensure_schema(self, conn: psycopg2.extensions.connection) -> None:
+        _ensure_adsb_schema(conn)
+
+    def _flush(self, batch: Iterable[dict]) -> bool:
+        conn = self._ensure_connection()
+        if not conn:
+            time.sleep(2.0)
+            return False
+
+        values = []
+        for record in batch:
+            values.append(tuple(record.get(field) for field in _MESSAGE_FIELDS))
+
+        try:
+            with conn.cursor() as cur:
+                execute_values(cur, _MESSAGE_INSERT_SQL, values)
+            conn.commit()
+            return True
+        except Exception as exc:
+            logger.warning("ADS-B history insert failed: %s", exc)
+            try:
+                conn.rollback()
+            except Exception:
+                pass
+            self._conn = None
+            time.sleep(2.0)
+            return False
+
+
+adsb_history_writer = AdsbHistoryWriter()
+
+
+class AdsbSnapshotWriter:
+    """Background writer for ADS-B snapshot records."""
+
+    def __init__(self) -> None:
+        self.enabled = ADSB_HISTORY_ENABLED
+        self._queue: queue.Queue[dict] = queue.Queue(maxsize=ADSB_HISTORY_QUEUE_SIZE)
+        self._thread: threading.Thread | None = None
+        self._stop_event = threading.Event()
+        self._conn: psycopg2.extensions.connection | None = None
+        self._dropped = 0
+
+    def start(self) -> None:
+        if not self.enabled:
+            return
+        if self._thread and self._thread.is_alive():
+            return
+        self._thread = threading.Thread(target=self._run, name='adsb-snapshot-writer', daemon=True)
+        self._thread.start()
+        logger.info("ADS-B snapshot writer started")
+
+    def stop(self) -> None:
+        self._stop_event.set()
+
+    def enqueue(self, record: dict) -> None:
+        if not self.enabled:
+            return
+        if 'captured_at' not in record or record['captured_at'] is None:
+            record['captured_at'] = datetime.now(timezone.utc)
+        try:
+            self._queue.put_nowait(record)
+        except queue.Full:
+            self._dropped += 1
+            if self._dropped % 1000 == 0:
+                logger.warning("ADS-B snapshot queue full, dropped %d records", self._dropped)
+
+    def _run(self) -> None:
+        batch: list[dict] = []
+        last_flush = time.time()
+
+        while not self._stop_event.is_set():
+            timeout = max(0.0, ADSB_HISTORY_FLUSH_INTERVAL - (time.time() - last_flush))
+            try:
+                item = self._queue.get(timeout=timeout)
+                batch.append(item)
+            except queue.Empty:
+                pass
+
+            now = time.time()
+            if batch and (len(batch) >= ADSB_HISTORY_BATCH_SIZE or now - last_flush >= ADSB_HISTORY_FLUSH_INTERVAL):
+                if self._flush(batch):
+                    batch.clear()
+                    last_flush = now
+
+    def _ensure_connection(self) -> psycopg2.extensions.connection | None:
+        if self._conn:
+            return self._conn
+        try:
+            self._conn = psycopg2.connect(_make_dsn())
+            self._conn.autocommit = False
+            self._ensure_schema(self._conn)
+            return self._conn
+        except Exception as exc:
+            logger.warning("ADS-B snapshot DB connection failed: %s", exc)
+            self._conn = None
+            return None
+
+    def _ensure_schema(self, conn: psycopg2.extensions.connection) -> None:
+        _ensure_adsb_schema(conn)
+
+    def _flush(self, batch: Iterable[dict]) -> bool:
+        conn = self._ensure_connection()
+        if not conn:
+            time.sleep(2.0)
+            return False
+
+        values = []
+        for record in batch:
+            row = []
+            for field in _SNAPSHOT_FIELDS:
+                value = record.get(field)
+                if field == 'snapshot' and value is not None:
+                    value = Json(value)
+                row.append(value)
+            values.append(tuple(row))
+
+        try:
+            with conn.cursor() as cur:
+                execute_values(cur, _SNAPSHOT_INSERT_SQL, values)
+            conn.commit()
+            return True
+        except Exception as exc:
+            logger.warning("ADS-B snapshot insert failed: %s", exc)
+            try:
+                conn.rollback()
+            except Exception:
+                pass
+            self._conn = None
+            time.sleep(2.0)
+            return False
+
+
+adsb_snapshot_writer = AdsbSnapshotWriter()