import logging
from contextlib import asynccontextmanager
from pathlib import Path

from fastapi import FastAPI, HTTPException
from fastapi.responses import FileResponse
from fastapi.staticfiles import StaticFiles

from .aggregator import aggregate_period, enrich_snapshot_meta
from .config import ROOT_DIR, settings
from .db import get_latest_snapshot, init_db, log_push
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
from .wecom import build_markdown, send_wecom_markdown

logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
)
logging.getLogger("httpx").setLevel(logging.WARNING)
logging.getLogger("httpcore").setLevel(logging.WARNING)
logger = logging.getLogger(__name__)

WEB_DIR = ROOT_DIR / "web"


@asynccontextmanager
async def lifespan(app: FastAPI):
    init_db()
    if settings.proxy_enabled:
        logger.info(
            "Proxy enabled: %s (scope=%s)",
            settings.proxy_url,
            settings.proxy_for,
        )
    else:
        logger.info("Proxy disabled (direct connection)")
    await startup_tasks()
    start_scheduler()
    yield
    stop_scheduler()


app = FastAPI(title="币安成交量排名监控", lifespan=lifespan)

if WEB_DIR.exists():
    app.mount("/static", StaticFiles(directory=str(WEB_DIR)), name="static")


@app.get("/")
async def index():
    index_path = WEB_DIR / "index.html"
    if index_path.exists():
        return FileResponse(index_path)
    return {"message": "Web UI not found. Place files in /web"}


@app.get("/api/yesterday/top30")
async def api_yesterday_top30():
    snap = get_latest_snapshot("yesterday")
    if snap:
        return {
            "period_start": snap["period_start"],
            "period_end": snap["period_end"],
            "updated_at": snap["created_at"],
            "top_n": settings.top_n,
            "volume_threshold": settings.volume_threshold,
            "change_threshold": settings.change_threshold,
            "items": snap["items"],
        }
    start, end = get_yesterday_period()
    try:
        items = await aggregate_period(start, end)
        return enrich_snapshot_meta(items, start, end)
    except Exception as e:
        logger.error("api yesterday failed: %s", e)
        meta = enrich_snapshot_meta([], start, end)
        meta["error"] = "数据暂不可用，请检查网络或稍后重试"
        return meta


@app.get("/api/today/top30")
async def api_today_top30():
    cached = get_today_cache()
    if cached:
        return cached
    start, end = get_today_period()
    try:
        items = await aggregate_period(start, end, use_live_prices=True)
        return enrich_snapshot_meta(items, start, end)
    except Exception as e:
        logger.error("api today failed: %s", e)
        meta = enrich_snapshot_meta([], start, end)
        meta["error"] = "数据暂不可用，请检查网络或稍后重试"
        return meta


@app.post("/api/push/test")
async def api_push_test():
    snap = get_latest_snapshot("yesterday")
    if not snap:
        start, end = get_yesterday_period()
        items = await aggregate_period(start, end)
        from .db import save_snapshot
        save_snapshot("yesterday", start, end, items)
        snap = get_latest_snapshot("yesterday")
    if not snap:
        raise HTTPException(500, "无法生成昨日数据")
    content = build_markdown(snap)
    ok, msg = await send_wecom_markdown(content)
    log_push(snap["period_start"], snap["period_end"], ok, msg)
    if not ok:
        raise HTTPException(500, f"推送失败: {msg}")
    return {"success": True, "message": "推送成功"}


@app.post("/api/refresh/yesterday")
async def api_refresh_yesterday():
    await job_finalize_yesterday()
    snap = get_latest_snapshot("yesterday")
    return snap or {"message": "done"}


@app.post("/api/refresh/today")
async def api_refresh_today():
    await job_refresh_today()
    return get_today_cache() or {"message": "done"}