"""Jellyfin API client."""
import os
from datetime import date, datetime, timezone
import requests

JELLYFIN_HOST = os.environ["JELLYFIN_HOST"].rstrip("/")
JELLYFIN_API_KEY = os.environ["JELLYFIN_API_KEY"]
JELLYFIN_USER_ID = os.environ["JELLYFIN_USER_ID"]

HEADERS = {"X-Emby-Token": JELLYFIN_API_KEY}


def _get_one_piece_series_id():
    """Return the Jellyfin item ID for One Piece."""
    url = f"{JELLYFIN_HOST}/Users/{JELLYFIN_USER_ID}/Items"
    params = {
        "searchTerm": "One Piece",
        "IncludeItemTypes": "Series",
        "Recursive": "true",
        "Limit": 5,
    }
    resp = requests.get(url, headers=HEADERS, params=params, timeout=10)
    resp.raise_for_status()
    items = resp.json().get("Items", [])
    if not items:
        raise RuntimeError("One Piece series not found in Jellyfin")
    return items[0]["Id"]


def get_last_watched_episode(up_to_date: date) -> dict:
    """Return the last watched One Piece episode up to (and including) up_to_date.

    Returns a dict with keys: season, episode, name, jellyfin_id, watched_at
    """
    series_id = _get_one_piece_series_id()

    url = f"{JELLYFIN_HOST}/Users/{JELLYFIN_USER_ID}/Items"
    params = {
        "ParentId": series_id,
        "IncludeItemTypes": "Episode",
        "Recursive": "true",
        "Filters": "IsPlayed",
        "SortBy": "DatePlayed",
        "SortOrder": "Descending",
        "Fields": "UserData",
        "Limit": 200,
    }
    resp = requests.get(url, headers=HEADERS, params=params, timeout=15)
    resp.raise_for_status()
    items = resp.json().get("Items", [])

    cutoff = datetime(up_to_date.year, up_to_date.month, up_to_date.day, 23, 59, 59, tzinfo=timezone.utc)

    for item in items:
        played_str = item.get("UserData", {}).get("LastPlayedDate")
        if not played_str:
            continue
        played_dt = datetime.fromisoformat(played_str.replace("Z", "+00:00"))
        if played_dt <= cutoff:
            return {
                "season": item["ParentIndexNumber"],
                "episode": item["IndexNumber"],
                "name": item.get("Name", ""),
                "jellyfin_id": item["Id"],
                "watched_at": played_str,
            }

    raise RuntimeError(f"No watched episodes found up to {up_to_date}")