from __future__ import annotations

import json
import xml.etree.ElementTree as ET
from urllib.request import urlopen


def library_releases(library: dict | None) -> list[dict]:
    releases = []
    for show in ((library or {}).get("collections") or {}).get("series", []):
        for season in show.get("seasons", []):
            for episode in season.get("episodes", []):
                if episode.get("status") not in {"missing", "upcoming"}:
                    continue
                releases.append({
                    "provider": "Library",
                    "title": show.get("metadata", {}).get("title") or show.get("title"),
                    "episode_title": episode.get("title"),
                    "season": episode.get("season"),
                    "episode": episode.get("episode"),
                    "date": episode.get("air_date"),
                    "type": "tv",
                    "status": episode.get("status"),
                    "poster": show.get("metadata", {}).get("poster"),
                    "library_key": show.get("key"),
                })
    return sorted(releases, key=lambda item: (item.get("date") or "9999-99-99", item.get("title") or ""))


def fetch_releases(config: dict, library: dict | None = None) -> list[dict]:
    releases: list[dict] = library_releases(library)
    for provider in config.get("release_providers", []):
        if not provider.get("enabled", True):
            continue
        try:
            with urlopen(provider["url"], timeout=8) as response:
                body = response.read()
            if provider.get("type") == "json":
                data = json.loads(body.decode())
                for item in data[:30] if isinstance(data, list) else []:
                    show = item.get("show", item)
                    releases.append({
                        "provider": provider["name"],
                        "title": show.get("name"),
                        "date": item.get("airdate") or item.get("premiered"),
                        "type": "tv",
                    })
            else:
                root = ET.fromstring(body)
                for item in root.findall(".//item")[:30]:
                    releases.append({
                        "provider": provider["name"],
                        "title": (item.findtext("title") or "").strip(),
                        "date": (item.findtext("pubDate") or "").strip(),
                        "type": "movie",
                    })
        except Exception as exc:
            releases.append({"provider": provider.get("name"), "error": str(exc)})
    return releases