website: snapshot

crates/brk_client/examples/fetch_prices.rs

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+use std::fs::File;
+use std::io::{BufWriter, Write};
+
+use brk_client::{BrkClient, BrkClientOptions, Result};
+use brk_types::Dollars;
+
+const CHUNK_SIZE: usize = 10_000;
+const END_HEIGHT: usize = 630_000;
+const OUTPUT_FILE: &str = "prices_avg.txt";
+
+fn main() -> Result<()> {
+    let client = BrkClient::with_options(BrkClientOptions {
+        base_url: "https://next.bitview.space".to_string(),
+        timeout_secs: 60,
+    });
+
+    let file = File::create(OUTPUT_FILE).map_err(|e| brk_client::BrkError {
+        message: e.to_string(),
+    })?;
+    let mut writer = BufWriter::new(file);
+
+    for start in (0..END_HEIGHT).step_by(CHUNK_SIZE) {
+        let end = (start + CHUNK_SIZE).min(END_HEIGHT);
+        eprintln!("Fetching {start} to {end}...");
+
+        let ohlcs = client
+            .metrics()
+            .price
+            .cents
+            .ohlc
+            .by
+            .height()
+            .range(start..end)
+            .fetch()?;
+
+        for ohlc in ohlcs.data {
+            let avg = (*ohlc.open + *ohlc.close) / 2;
+            let avg = Dollars::from(avg);
+            writeln!(writer, "{avg}").map_err(|e| brk_client::BrkError {
+                message: e.to_string(),
+            })?;
+        }
+    }
+
+    writer.flush().map_err(|e| brk_client::BrkError {
+        message: e.to_string(),
+    })?;
+    eprintln!("Done. Output in {OUTPUT_FILE}");
+
+    Ok(())
+}