#!/usr/bin/env python3
"""Recupere la liste des apps installees sur le serveur YunoHost et ajoute
celles qui manquent dans src/config.json (dans "ungrouped"), sans toucher a
celles deja placees dans un groupe, dans "pinned" ou deja presentes.

Usage: python3 scripts/sync-apps.py [utilisateur@hote] [domaine]

Toute la configuration vient de .env (SYNC_SSH_USER, SYNC_SSH_HOST,
PORTAL_DOMAIN, REMOTE_USER) ; les arguments en ligne de commande, s'ils sont
fournis, ont priorite sur .env.
"""
import json
import subprocess
import sys
from pathlib import Path

SCRIPT_DIR = Path(__file__).resolve().parent
PROJECT_ROOT = SCRIPT_DIR.parent
CONFIG_PATH = PROJECT_ROOT / "src" / "config.json"
ENV_PATH = PROJECT_ROOT / ".env"


def load_env():
    env = {}
    if not ENV_PATH.exists():
        return env
    for line in ENV_PATH.read_text(encoding="utf-8").splitlines():
        line = line.strip()
        if not line or line.startswith("#") or "=" not in line:
            continue
        key, value = line.split("=", 1)
        env[key.strip()] = value.strip()
    return env


ENV = load_env()

SYNC_SSH_USER = ENV.get("SYNC_SSH_USER", "root")
SYNC_SSH_HOST = ENV.get("SYNC_SSH_HOST") or ENV.get("REMOTE_HOST")
PORTAL_DOMAIN = ENV.get("PORTAL_DOMAIN") or ENV.get("REMOTE_HOST")
SELF_APP_ID = ENV.get("REMOTE_USER", "")  # cette page elle-meme, jamais ajoutee

if len(sys.argv) > 1:
    SSH_TARGET = sys.argv[1]
elif SYNC_SSH_HOST:
    SSH_TARGET = f"{SYNC_SSH_USER}@{SYNC_SSH_HOST}"
else:
    SSH_TARGET = None

DOMAIN = sys.argv[2] if len(sys.argv) > 2 else PORTAL_DOMAIN

if not SSH_TARGET or not DOMAIN:
    print(
        "Configuration manquante : renseigne SYNC_SSH_HOST (ou REMOTE_HOST) "
        "et PORTAL_DOMAIN dans .env (lance 'make config' si .env n'existe pas "
        "encore), ou passe-les en argument :\n"
        "  python3 scripts/sync-apps.py utilisateur@hote domaine",
        file=sys.stderr,
    )
    sys.exit(1)

PALETTE = [
    "#1db9c3", "#ff5a1f", "#2094f3", "#ffc230", "#00a651", "#e6721a",
    "#b71c1c", "#f39c12", "#0d3b66", "#3b8a8c", "#568d34", "#609926",
    "#d24939", "#0066cc", "#8e44ad", "#16a085", "#c0392b", "#2c3e50",
]


def color_of(name):
    h = 0
    for ch in name:
        h = (h * 31 + ord(ch)) & 0xFFFFFFFF
    return PALETTE[h % len(PALETTE)]


def initials_of(name):
    words = name.strip().split()
    if len(words) == 1:
        return words[0][:2].upper()
    return (words[0][0] + words[1][0]).upper()


def fetch_remote_apps():
    cmd = ["ssh", "-o", "BatchMode=yes", SSH_TARGET, f"cat /etc/yunohost/portal/{DOMAIN}.json"]
    result = subprocess.run(cmd, capture_output=True, text=True)
    if result.returncode != 0:
        print(f"Erreur SSH: {result.stderr}", file=sys.stderr)
        sys.exit(1)
    return json.loads(result.stdout)


def normalize_url(url):
    return url.replace("https://", "").replace("http://", "").rstrip("/").lower()


def known_urls(config):
    urls = set()
    for app in config.get("pinned", []):
        urls.add(normalize_url(app["url"]))
    for group in config.get("groups", []):
        for app in group["apps"]:
            urls.add(normalize_url(app["url"]))
    for app in config.get("ungrouped", []):
        urls.add(normalize_url(app["url"]))
    return urls


def main():
    with open(CONFIG_PATH, encoding="utf-8") as f:
        config = json.load(f)

    remote = fetch_remote_apps()
    remote_apps = remote.get("apps", {})
    existing_urls = known_urls(config)

    added = []
    for perm_key, info in sorted(remote_apps.items()):
        if not perm_key.endswith(".main"):
            continue
        app_id = perm_key[: -len(".main")]
        if app_id == SELF_APP_ID:
            continue

        url = info["url"]
        if not url.startswith("http"):
            url = "https://" + url
        if not url.endswith("/"):
            url += "/"

        if normalize_url(url) in existing_urls:
            continue

        name = info.get("label", app_id)
        app = {
            "id": app_id,
            "name": name,
            "url": url,
            "color": color_of(name),
            "initials": initials_of(name),
        }
        logo = info.get("logo")
        if logo:
            app["icon"] = f"https://{DOMAIN}{logo}"

        config.setdefault("ungrouped", []).append(app)
        added.append(name)

    if not added:
        print("Rien a ajouter, config.json est deja a jour.")
        return

    with open(CONFIG_PATH, "w", encoding="utf-8") as f:
        json.dump(config, f, ensure_ascii=False, indent=2)
        f.write("\n")

    print(f"{len(added)} application(s) ajoutee(s) dans \"ungrouped\" :")
    for name in added:
        print(f"  - {name}")


if __name__ == "__main__":
    main()