from datetime import date

from fastapi import APIRouter, Depends, HTTPException, Query
from sqlalchemy.orm import Session
from zoneinfo import ZoneInfo

from app.auth.deps import get_current_user
from app.daily.recap import RecapService
from app.db.base import get_db
from app.db.models import User
from app.homelab.context import resolve_timezone

router = APIRouter()


@router.get("/daily/recaps")
def list_daily_recaps(
    limit: int = 14,
    db: Session = Depends(get_db),
    user: User = Depends(get_current_user),
):
    service = RecapService(db, user.id)
    rows = service.list_recaps(limit=limit)
    return {"ok": True, "recaps": [service.recap_to_dict(row) for row in rows]}


@router.get("/daily/recaps/{day}")
def get_daily_recap(
    day: str,
    db: Session = Depends(get_db),
    user: User = Depends(get_current_user),
):
    try:
        parsed_day = date.fromisoformat(day)
    except ValueError as exc:
        raise HTTPException(status_code=400, detail="Invalid date") from exc
    service = RecapService(db, user.id)
    row = service.get(parsed_day)
    if not row or row.status not in ("posted", "text_only"):
        raise HTTPException(status_code=404, detail="Recap not found")
    return {"ok": True, "recap": service.recap_to_dict(row)}


@router.post("/daily/recaps/generate")
async def generate_daily_recap(
    day: str | None = Query(None),
    force: bool = Query(False),
    db: Session = Depends(get_db),
    user: User = Depends(get_current_user),
):
    from datetime import datetime, timezone

    from app.config import get_settings

    target_day = date.fromisoformat(day) if day else datetime.now(timezone.utc).date()
    tz_name = resolve_timezone(db, user.id)
    try:
        tz = ZoneInfo(tz_name)
    except Exception:
        tz = ZoneInfo("Europe/Moscow")

    settings = get_settings()
    image_enabled = settings.evening_summary_image_enabled and settings.comfyui_enabled
    service = RecapService(db, user.id)
    row = await service.generate_and_post(target_day, tz, image_enabled=image_enabled, force=force)
    if not row:
        raise HTTPException(status_code=400, detail="Cannot generate recap (character appearance missing)")
    return {"ok": row.status in ("posted", "text_only"), "recap": service.recap_to_dict(row)}