"""Movie endpoints (section 17)."""

from __future__ import annotations

from typing import Literal

from fastapi import APIRouter, Depends, HTTPException, Query, status
from redis.asyncio import Redis
from sqlalchemy.ext.asyncio import AsyncSession

from app.api.deps import cached_response, get_current_user, not_found
from app.core.database import get_db
from app.core.redis import get_redis
from app.core.security import enforce_rate_limit
from app.models.user import User
from app.schemas.account import RatingIn, RatingOut
from app.schemas.movie import (
    MovieCreditsOut,
    MovieDetailOut,
    MovieImagesOut,
    MovieListOut,
    MovieRecommendationsOut,
    MovieVideosOut,
    MovieWatchProvidersOut,
)
from app.services import movie_service
from app.services.cache import build_key

router = APIRouter(prefix="/movies", tags=["movies"], dependencies=[Depends(enforce_rate_limit)])


@router.get("", response_model=MovieListOut)
async def list_movies(
    genre: str | None = Query(None, description="Aurora genre id, e.g. aur_genre_..."),
    keyword: str | None = Query(None, description="Aurora keyword id, e.g. aur_keyword_..."),
    year: int | None = Query(None, description="Primary release year"),
    status_: str | None = Query(None, alias="status", description="Movie status, e.g. released"),
    sort_by: Literal["popularity", "release_date", "vote_average", "title"] = Query("popularity"),
    sort_dir: Literal["asc", "desc"] = Query("desc"),
    page: int = Query(1, ge=1),
    page_size: int = Query(20, ge=1, le=50),
    session: AsyncSession = Depends(get_db),
) -> MovieListOut:
    try:
        return await movie_service.list_movies(
            session,
            genre_aurora_id=genre,
            keyword_aurora_id=keyword,
            year=year,
            status=status_,
            sort_by=sort_by,
            sort_dir=sort_dir,
            page=page,
            page_size=page_size,
        )
    except movie_service.InvalidMovieFilterError as exc:
        raise HTTPException(status.HTTP_422_UNPROCESSABLE_CONTENT, str(exc)) from exc


@router.get("/now-playing", response_model=MovieListOut)
async def now_playing_movies(
    region: str = Query("US", min_length=2, max_length=2, description="ISO 3166-1 alpha-2 country"),
    page: int = Query(1, ge=1),
    page_size: int = Query(20, ge=1, le=50),
    session: AsyncSession = Depends(get_db),
) -> MovieListOut:
    return await movie_service.list_now_playing(session, region=region, page=page, page_size=page_size)


@router.get("/upcoming", response_model=MovieListOut)
async def upcoming_movies(
    region: str = Query("US", min_length=2, max_length=2, description="ISO 3166-1 alpha-2 country"),
    page: int = Query(1, ge=1),
    page_size: int = Query(20, ge=1, le=50),
    session: AsyncSession = Depends(get_db),
) -> MovieListOut:
    return await movie_service.list_upcoming(session, region=region, page=page, page_size=page_size)


@router.get("/trending", response_model=MovieListOut)
async def trending_movies(
    time_window: Literal["day", "week"] = Query("day", alias="window"),
    page: int = Query(1, ge=1),
    page_size: int = Query(20, ge=1, le=50),
    session: AsyncSession = Depends(get_db),
) -> MovieListOut:
    try:
        return await movie_service.list_trending(
            session, time_window=time_window, page=page, page_size=page_size
        )
    except movie_service.InvalidMovieFilterError as exc:
        raise HTTPException(status.HTTP_422_UNPROCESSABLE_CONTENT, str(exc)) from exc


@router.get("/{aurora_id}", response_model=MovieDetailOut)
async def get_movie(
    aurora_id: str,
    session: AsyncSession = Depends(get_db),
    redis: Redis = Depends(get_redis),
) -> MovieDetailOut:
    try:
        return await cached_response(
            redis,
            build_key("movie", aurora_id),
            MovieDetailOut,
            lambda: movie_service.get_movie_detail(session, aurora_id),
        )
    except movie_service.MovieNotFoundError as exc:
        raise not_found("movie", aurora_id) from exc


@router.get("/{aurora_id}/credits", response_model=MovieCreditsOut)
async def get_movie_credits(
    aurora_id: str, session: AsyncSession = Depends(get_db)
) -> MovieCreditsOut:
    try:
        return await movie_service.get_movie_credits(session, aurora_id)
    except movie_service.MovieNotFoundError as exc:
        raise not_found("movie", aurora_id) from exc


@router.get("/{aurora_id}/images", response_model=MovieImagesOut)
async def get_movie_images(
    aurora_id: str, session: AsyncSession = Depends(get_db)
) -> MovieImagesOut:
    try:
        return await movie_service.get_movie_images(session, aurora_id)
    except movie_service.MovieNotFoundError as exc:
        raise not_found("movie", aurora_id) from exc


@router.get("/{aurora_id}/videos", response_model=MovieVideosOut)
async def get_movie_videos(
    aurora_id: str, session: AsyncSession = Depends(get_db)
) -> MovieVideosOut:
    try:
        return await movie_service.get_movie_videos(session, aurora_id)
    except movie_service.MovieNotFoundError as exc:
        raise not_found("movie", aurora_id) from exc


@router.get("/{aurora_id}/recommendations", response_model=MovieRecommendationsOut)
async def get_movie_recommendations(
    aurora_id: str, session: AsyncSession = Depends(get_db)
) -> MovieRecommendationsOut:
    try:
        return await movie_service.get_movie_recommendations(session, aurora_id)
    except movie_service.MovieNotFoundError as exc:
        raise not_found("movie", aurora_id) from exc


@router.get("/{aurora_id}/watch-providers", response_model=MovieWatchProvidersOut)
async def get_movie_watch_providers(
    aurora_id: str, session: AsyncSession = Depends(get_db)
) -> MovieWatchProvidersOut:
    try:
        return await movie_service.get_movie_watch_providers(session, aurora_id)
    except movie_service.MovieNotFoundError as exc:
        raise not_found("movie", aurora_id) from exc


@router.put("/{aurora_id}/rating", response_model=RatingOut)
async def rate_movie(
    aurora_id: str,
    body: RatingIn,
    user: User = Depends(get_current_user),
    session: AsyncSession = Depends(get_db),
) -> RatingOut:
    try:
        return await movie_service.rate_movie(session, aurora_id, user_id=user.id, value=body.value)
    except movie_service.MovieNotFoundError as exc:
        raise not_found("movie", aurora_id) from exc


@router.delete("/{aurora_id}/rating", status_code=status.HTTP_204_NO_CONTENT)
async def unrate_movie(
    aurora_id: str,
    user: User = Depends(get_current_user),
    session: AsyncSession = Depends(get_db),
) -> None:
    try:
        await movie_service.unrate_movie(session, aurora_id, user_id=user.id)
    except movie_service.MovieNotFoundError as exc:
        raise not_found("movie", aurora_id) from exc


@router.post("/{aurora_id}/watchlist", status_code=status.HTTP_204_NO_CONTENT)
async def add_movie_to_watchlist(
    aurora_id: str,
    user: User = Depends(get_current_user),
    session: AsyncSession = Depends(get_db),
) -> None:
    try:
        await movie_service.add_movie_to_watchlist(session, aurora_id, user_id=user.id)
    except movie_service.MovieNotFoundError as exc:
        raise not_found("movie", aurora_id) from exc


@router.delete("/{aurora_id}/watchlist", status_code=status.HTTP_204_NO_CONTENT)
async def remove_movie_from_watchlist(
    aurora_id: str,
    user: User = Depends(get_current_user),
    session: AsyncSession = Depends(get_db),
) -> None:
    try:
        await movie_service.remove_movie_from_watchlist(session, aurora_id, user_id=user.id)
    except movie_service.MovieNotFoundError as exc:
        raise not_found("movie", aurora_id) from exc