增加k线图

backend/app/main.py

@@ -8,7 +8,9 @@ from fastapi.staticfiles import StaticFiles
 
 from .aggregator import aggregate_period, enrich_snapshot_meta
 from .config import ROOT_DIR, settings
+from .kline_store import get_daily_candles, sync_daily_klines
 from .db import get_latest_snapshot, init_db, log_push
+from .exceptions import BinanceRateLimitedError
 from .periods import get_today_period, get_yesterday_period
 from .scheduler import job_finalize_yesterday, job_push_wecom, job_refresh_today, start_scheduler, startup_tasks, stop_scheduler
 from .state import get_today_cache
@@ -128,3 +130,36 @@ async def api_refresh_yesterday():
 async def api_refresh_today():
     await job_refresh_today()
     return get_today_cache() or {"message": "done"}
+
+
+@app.get("/api/chart/{symbol}/daily")
+async def api_chart_daily(symbol: str, limit: int | None = None, refresh: bool = False):
+    """合约日 K 线：优先读本地 SQLite，过期再拉币安入库。"""
+    sym = symbol.upper().strip()
+    if not sym.endswith("USDT"):
+        raise HTTPException(400, "invalid symbol")
+    try:
+        candles, source = await get_daily_candles(sym, limit, force_refresh=refresh)
+        return {
+            "symbol": sym,
+            "interval": "1d",
+            "limit": len(candles),
+            "candles": candles,
+            "source": source,
+        }
+    except BinanceRateLimitedError as e:
+        raise HTTPException(503, f"币安限流，请 {e.retry_after_sec} 秒后再试") from e
+    except Exception as e:
+        logger.error("chart %s failed: %s", sym, e)
+        raise HTTPException(502, "K线获取失败") from e
+
+
+@app.post("/api/chart/{symbol}/daily/refresh")
+async def api_chart_daily_refresh(symbol: str, limit: int | None = None):
+    """强制从币安同步日 K 到本地库。"""
+    sym = symbol.upper().strip()
+    try:
+        candles = await sync_daily_klines(sym, limit)
+        return {"symbol": sym, "saved": len(candles), "source": "binance"}
+    except BinanceRateLimitedError as e:
+        raise HTTPException(503, f"币安限流，请 {e.retry_after_sec} 秒后再试") from e