Initial commit: btcdata — BTC data backend service

Split from btcprice monolith. Owns DB, migrations, Binance WebSocket, Kraken OHLC pollers, and exposes a JSON API with SSE price stream. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-23 20:07:30 +01:00
commit f64aa98b04
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+-- queries for btcdata
+
+-- :name insert-binance-price! :! :n
+-- :doc Insert a Binance BTC price
+INSERT INTO binance_price (price) VALUES (:price)
+
+-- :name get-latest-binance-price :? :1
+-- :doc Get the most recent Binance BTC price
+SELECT price, recorded_at FROM binance_price ORDER BY id DESC LIMIT 1
+
+-- :name upsert-kraken-hour! :! :n
+-- :doc Upsert a Kraken hourly OHLC candle
+INSERT INTO kraken_hour (ts, open, high, low, close, vwap, volume, trade_count)
+VALUES (:ts, :open, :high, :low, :close, :vwap, :volume, :trade-count)
+ON CONFLICT (ts) DO UPDATE
+SET open = EXCLUDED.open,
+    high = EXCLUDED.high,
+    low  = EXCLUDED.low,
+    close = EXCLUDED.close,
+    vwap  = EXCLUDED.vwap,
+    volume = EXCLUDED.volume,
+    trade_count = EXCLUDED.trade_count
+
+-- :name get-latest-kraken-hour :? :1
+-- :doc Get the most recent Kraken hourly candle by timestamp
+SELECT ts, open, high, low, close, vwap, volume, trade_count, created_at
+FROM kraken_hour ORDER BY ts DESC LIMIT 1
+
+-- :name upsert-kraken-day! :! :n
+-- :doc Upsert a Kraken daily OHLC candle
+INSERT INTO kraken_day (ts, open, high, low, close, vwap, volume, trade_count)
+VALUES (:ts, :open, :high, :low, :close, :vwap, :volume, :trade-count)
+ON CONFLICT (ts) DO UPDATE
+SET open = EXCLUDED.open,
+    high = EXCLUDED.high,
+    low  = EXCLUDED.low,
+    close = EXCLUDED.close,
+    vwap  = EXCLUDED.vwap,
+    volume = EXCLUDED.volume,
+    trade_count = EXCLUDED.trade_count
+
+-- :name get-latest-kraken-day :? :1
+-- :doc Get the most recent Kraken daily candle by timestamp
+SELECT ts FROM kraken_day ORDER BY ts DESC LIMIT 1