brk: first commit

_src/structs/block_data.rs

@@ -0,0 +1,42 @@
+use allocative::Allocative;
+use bincode::{Decode, Encode};
+use serde::{Deserialize, Serialize};
+
+use super::{Amount, Height, Price, Timestamp};
+
+#[derive(Debug, Serialize, Deserialize, Encode, Decode, Allocative)]
+pub struct BlockData {
+    pub height: Height,
+    pub price: Price,
+    pub timestamp: Timestamp,
+    pub amount: Amount,
+    pub utxos: u32,
+}
+
+impl BlockData {
+    pub fn new(height: Height, price: Price, timestamp: Timestamp) -> Self {
+        Self {
+            height,
+            price,
+            timestamp,
+            amount: Amount::ZERO,
+            utxos: 0,
+        }
+    }
+
+    pub fn send(&mut self, amount: Amount) {
+        self.utxos -= 1;
+
+        if self.amount < amount {
+            unreachable!();
+        }
+
+        self.amount -= amount;
+    }
+
+    pub fn receive(&mut self, amount: Amount) {
+        self.utxos += 1;
+
+        self.amount += amount;
+    }
+}