"""
Favorites management routes for Ohm Stream Downloader API.
"""

from typing import Optional
from fastapi import APIRouter, Depends, HTTPException, Query, Request, Response
from fastapi.templating import Jinja2Templates

from app.favorites import get_favorites_manager
from app.models.auth import User
from app.routers.router_auth import get_current_user_from_token, get_optional_user

router = APIRouter(prefix="/api/favorites", tags=["favorites"])
templates = Jinja2Templates(directory="templates")


@router.get("")
async def list_favorites(
    request: Request,
    sort_by: str = "created_at",
    order: str = "desc",
    filter_provider: Optional[str] = None,
    filter_genre: Optional[str] = None,
    html: bool = Query(False),
    current_user: Optional[User] = Depends(get_optional_user),
):
    """List all favorite anime with optional sorting and filtering"""
    is_htmx = request.headers.get("HX-Request")

    if current_user is None and (html or is_htmx):
        return templates.TemplateResponse(
            "components/login_prompt.html", {"request": request}
        )

    if current_user is None:
        raise HTTPException(status_code=401, detail="Authentication required")

    fav_manager = get_favorites_manager()
    favorites = await fav_manager.list_favorites(
        user_id=current_user.id,
        sort_by=sort_by,
        order=order,
        filter_provider=filter_provider,
        filter_genre=filter_genre,
    )
    return {
        "favorites": favorites,
        "total": len(favorites),
        "filters": {
            "sort_by": sort_by,
            "order": order,
            "provider": filter_provider,
            "genre": filter_genre,
        },
    }


@router.post("")
async def add_favorite(
    request: Request,
    response: Response,
    current_user: User = Depends(get_current_user_from_token),
):
    """Add an anime to favorites"""
    data = await request.json()

    required_fields = ["anime_id", "title", "url", "provider"]
    for field in required_fields:
        if field not in data:
            raise HTTPException(
                status_code=400, detail=f"Missing required field: {field}"
            )

    fav_manager = get_favorites_manager()
    favorite = await fav_manager.add_favorite(
        user_id=current_user.id,
        anime_id=data["anime_id"],
        title=data["title"],
        url=data["url"],
        provider=data["provider"],
        metadata=data.get("metadata"),
        poster_url=data.get("poster_url"),
    )

    response.headers["HX-Trigger"] = '{"show-toast": {"message": "' + favorite['title'] + ' ajouté aux favoris", "type": "success"}}'
    return {"status": "added", "favorite": favorite}


@router.delete("/{anime_id}")
async def remove_favorite(
    anime_id: str,
    response: Response,
    current_user: User = Depends(get_current_user_from_token),
):
    """Remove an anime from favorites"""
    fav_manager = get_favorites_manager()
    removed = await fav_manager.remove_favorite(anime_id, user_id=current_user.id)

    if not removed:
        raise HTTPException(status_code=404, detail="Favorite not found")

    response.headers["HX-Trigger"] = '{"show-toast": {"message": "Favori supprimé", "type": "info"}}'
    return {"status": "removed", "anime_id": anime_id}


@router.get("/stats")
async def get_favorites_stats(
    current_user: User = Depends(get_current_user_from_token),
):
    """Get statistics about favorites"""
    fav_manager = get_favorites_manager()
    stats = await fav_manager.get_stats(user_id=current_user.id)
    return stats


@router.get("/{anime_id}")
async def get_favorite(
    anime_id: str,
    current_user: User = Depends(get_current_user_from_token),
):
    """Get details of a specific favorite anime"""
    fav_manager = get_favorites_manager()
    favorite = await fav_manager.get_favorite(anime_id, user_id=current_user.id)

    if not favorite:
        raise HTTPException(status_code=404, detail="Favorite not found")

    return {"favorite": favorite}


@router.post("/toggle")
async def toggle_favorite(
    request: Request,
    response: Response,
    current_user: User = Depends(get_current_user_from_token),
):
    """Toggle an anime in favorites"""
    data = await request.json()

    required_fields = ["anime_id", "title", "url", "provider"]
    for field in required_fields:
        if field not in data:
            raise HTTPException(
                status_code=400, detail=f"Missing required field: {field}"
            )

    fav_manager = get_favorites_manager()
    result = await fav_manager.toggle_favorite(
        user_id=current_user.id,
        anime_id=data["anime_id"],
        title=data["title"],
        url=data["url"],
        provider=data["provider"],
        metadata=data.get("metadata"),
        poster_url=data.get("poster_url"),
    )

    action = result.get("action", "unknown")
    message = f"'{data['title']}' {'ajouté aux' if action == 'added' else 'retiré des'} favoris"
    toast_type = "success" if action == "added" else "info"

    response.headers["HX-Trigger"] = f'{{"show-toast": {{"message": "{message}", "type": "{toast_type}"}}}}'
    return result