import os
import logging
from contextlib import asynccontextmanager
from fastapi import BackgroundTasks, FastAPI, Query, HTTPException
from fastapi.middleware.cors import CORSMiddleware
from apscheduler.schedulers.background import BackgroundScheduler

from .db import (
    init_db, get_announcements, get_announcement, create_announcement,
    update_announcement, delete_announcement, update_all_statuses,
    get_profile, upsert_profile, get_matches, mark_match_read,
    get_last_collect_log, get_dashboard,
)
from .collector import collect_all
from .matcher import run_matching
from .models import AnnouncementCreate, AnnouncementUpdate, ProfileUpdate

logging.basicConfig(level=logging.INFO, format="%(asctime)s [%(name)s] %(levelname)s %(message)s")
logger = logging.getLogger("realestate-lab")

scheduler = BackgroundScheduler(timezone=os.getenv("TZ", "Asia/Seoul"))


def scheduled_collect():
    """매일 09:00 — 수집 + 매칭"""
    logger.info("스케줄 수집 시작")
    collect_all()
    run_matching()
    logger.info("스케줄 수집 + 매칭 완료")


def scheduled_status_update():
    """매일 00:00 — 상태 갱신 + 재매칭"""
    logger.info("상태 갱신 시작")
    update_all_statuses()
    run_matching()
    logger.info("상태 갱신 + 재매칭 완료")


@asynccontextmanager
async def lifespan(app: FastAPI):
    init_db()
    scheduler.add_job(scheduled_collect, "cron", hour=9, minute=0, id="collect")
    scheduler.add_job(scheduled_status_update, "cron", hour=0, minute=0, id="status_update")
    scheduler.start()
    logger.info("realestate-lab 시작")
    yield
    scheduler.shutdown()


app = FastAPI(lifespan=lifespan)

_cors_origins = os.getenv("CORS_ALLOW_ORIGINS", "http://localhost:3007,http://localhost:8080").split(",")
app.add_middleware(
    CORSMiddleware,
    allow_origins=[o.strip() for o in _cors_origins],
    allow_credentials=False,
    allow_methods=["GET", "POST", "PUT", "PATCH", "DELETE", "OPTIONS"],
    allow_headers=["Content-Type"],
)


@app.get("/health")
def health():
    return {"status": "ok"}


# ── 공고 API ─────────────────────────────────────────────────────────────────

@app.get("/api/realestate/announcements")
def api_announcements(
    region: str = None,
    status: str = None,
    house_type: str = None,
    matched_only: bool = False,
    sort: str = "date",
    page: int = Query(1, ge=1),
    size: int = Query(20, ge=1, le=100),
):
    return get_announcements(region, status, house_type, matched_only, sort, page, size)


@app.get("/api/realestate/announcements/{ann_id}")
def api_announcement_detail(ann_id: int):
    ann = get_announcement(ann_id)
    if not ann:
        raise HTTPException(status_code=404, detail="Announcement not found")
    return ann


@app.post("/api/realestate/announcements", status_code=201)
def api_announcement_create(body: AnnouncementCreate):
    return create_announcement(body.model_dump())


@app.put("/api/realestate/announcements/{ann_id}")
def api_announcement_update(ann_id: int, body: AnnouncementUpdate):
    updated = update_announcement(ann_id, body.model_dump(exclude_none=True))
    if not updated:
        raise HTTPException(status_code=404, detail="Announcement not found")
    return updated


@app.delete("/api/realestate/announcements/{ann_id}")
def api_announcement_delete(ann_id: int):
    if not delete_announcement(ann_id):
        raise HTTPException(status_code=404, detail="Announcement not found")
    return {"ok": True}


# ── 수집 API ─────────────────────────────────────────────────────────────────

def _run_collect_and_match():
    collect_all()
    run_matching()


@app.post("/api/realestate/collect")
def api_collect(background_tasks: BackgroundTasks):
    background_tasks.add_task(_run_collect_and_match)
    return {"ok": True, "message": "수집 시작됨"}


@app.get("/api/realestate/collect/status")
def api_collect_status():
    log = get_last_collect_log()
    return log if log else {"collected_at": None, "new_count": 0, "total_count": 0, "error": None}


# ── 프로필 API ───────────────────────────────────────────────────────────────

@app.get("/api/realestate/profile")
def api_profile_get():
    profile = get_profile()
    return profile if profile else {}


@app.put("/api/realestate/profile")
def api_profile_update(body: ProfileUpdate):
    return upsert_profile(body.model_dump(exclude_none=True))


# ── 매칭 API ─────────────────────────────────────────────────────────────────

@app.get("/api/realestate/matches")
def api_matches(page: int = Query(1, ge=1), size: int = Query(20, ge=1, le=100)):
    return get_matches(page, size)


@app.post("/api/realestate/matches/refresh")
def api_matches_refresh():
    run_matching()
    return {"ok": True}


@app.patch("/api/realestate/matches/{match_id}/read")
def api_match_read(match_id: int):
    if not mark_match_read(match_id):
        raise HTTPException(status_code=404, detail="Match not found")
    return {"ok": True}


# ── 대시보드 API ─────────────────────────────────────────────────────────────

@app.get("/api/realestate/dashboard")
def api_dashboard():
    return get_dashboard()