from io import BytesIO
import requests
import os
from backend.utils import format_size, calculate_age

YGG_PASSKEY = os.getenv("YGG_PASSKEY")
ALLDEBRID_API_KEY = os.getenv("ALLDEBRID_API_KEY")
NTFY_TOPIC_URL = os.getenv("NTFY_TOPIC_URL")
NTFY_TOKEN = os.getenv("NTFY_TOKEN")

MAX_SIZE_BYTES = 5*1024**3
NB_PAGES = 2

def check_alldebrid_status():
    # Retourne True si premium actif, False sinon
    try:
        r = requests.get(
            "https://api.alldebrid.com/v4/user",
            params={"agent": "ygg-service", "apikey": ALLDEBRID_API_KEY},
            timeout=5
        )
        data = r.json()
        return data.get("data", {}).get("user", {}).get("isPremium", False)
    except Exception as e:
        print("Erreur AllDebrid:", e)
        return False

def send_ntfy(title, message):
    # Envoie une notification sur le topic ntfy, avec token si nécessaire
    headers = {"Title": title}
    if NTFY_TOKEN:
        headers["Authorization"] = f"Bearer {NTFY_TOKEN}"

    try:
        r = requests.post(
            NTFY_TOPIC_URL,
            data=message.encode("utf-8"),
            headers=headers,
            timeout=5
        )
        if r.status_code not in (200, 201):
            print(f"❌ Échec notification ({r.status_code}): {r.text}")
        else:
            print(f"✅ Notification envoyée : {title}")
    except Exception as e:
        print("Erreur ntfy:", e)

def search_torrents(query: str, category_id: str | None = None) -> list[dict]:
    """Recherche des torrents sur l'API Yggtorrent, retourne la liste brute."""
    url = "https://yggapi.eu/torrents"
    params = {
        "page": 1,
        "q": query,
        "order_by": "uploaded_at",
        "per_page": 100
    }
    if category_id:
        params["category_id"] = category_id

    results = []
    try:
        for page in range(1, NB_PAGES + 1):
            params['page'] = page
            r = requests.get(url, params=params, timeout=5)
            r.raise_for_status()
            data = r.json()
            results.extend(data)
    except requests.exceptions.RequestException as e:
        print("Erreur API Yggtorrent:", e)
        results = []

    return results

def filter_and_format_torrents(torrents: list[dict]) -> list[dict]:
    """Filtre les torrents trop gros et formate la taille et l'âge."""
    filtered = []
    for t in torrents:
        if t['size'] <= MAX_SIZE_BYTES:
            t['size'] = format_size(t['size'])
            days, human = calculate_age(t['uploaded_at'])
            t['age_days'] = days
            t['age_human'] = human
            filtered.append(t)
    return filtered

def download_torrent_ygg(torrent_id: str) -> tuple[bytes, str]:
    # Télécharge le fichier .torrent depuis Yggtorrent
    url = f"https://yggapi.eu/torrent/{torrent_id}/download"
    params = {
        "passkey": YGG_PASSKEY,
        "tracker_domain": "tracker.p2p-world.net"
    }
    r = requests.get(url, params=params, timeout=10, allow_redirects=True)
    r.raise_for_status()
    filename = f"{torrent_id}.torrent"
    return r.content, filename

def upload_to_alldebrid(torrent_content: bytes, filename: str) -> str:
    # Upload du torrent sur Alldebrid, retourne l'ID
    headers = {"Authorization": f"Bearer {ALLDEBRID_API_KEY}"}
    files = {'files[]': (filename, BytesIO(torrent_content))}
    r = requests.post("https://api.alldebrid.com/v4/magnet/upload/file", headers=headers, files=files, timeout=20)
    r.raise_for_status()
    data = r.json()
    if data.get("status") != "success":
        raise RuntimeError(f"Upload Alldebrid échoué : {data}")
    return data["data"]["files"][0]["id"]

def get_alldebrid_links(debrid_id: str) -> list[dict]:
    # Récupère les liens directs Alldebrid à partir d'un ID
    headers = {"Authorization": f"Bearer {ALLDEBRID_API_KEY}"}

    # Récupération des fichiers du magnet
    r = requests.get("https://api.alldebrid.com/v4/magnet/files", headers=headers, params={"id[]": debrid_id}, timeout=10)
    r.raise_for_status()
    data = r.json()
    if data.get("status") != "success":
        raise RuntimeError(f"Récupération liens Alldebrid échouée : {data}")

    alldebrid_links = []
    for magnet in data.get("data", {}).get("magnets", []):
        for file in magnet.get("files", []):
            if "e" in file:
                for entry in file["e"]:
                    if "l" in entry:
                        alldebrid_links.append(entry["l"])
            elif "l" in file:
                alldebrid_links.append(file["l"])

    # Débloquer les liens
    direct_links = []
    for link in alldebrid_links:
        r2 = requests.get("https://api.alldebrid.com/v4/link/unlock", headers=headers, params={"link": link}, timeout=10)
        r2.raise_for_status()
        info = r2.json()
        if info.get("status") != "success":
            raise RuntimeError(f"Déblocage lien Alldebrid échoué : {info}")
        direct_links.append({
            "name": info["data"]["filename"],
            "size": info["data"]["filesize"],
            "link": info["data"]["link"]
        })

    return direct_links