"""Пути и настройки лаунчера (settings.json рядом с main.py)."""

import json
import os

APP_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
SETTINGS_PATH = os.path.join(APP_DIR, "settings.json")
DEFAULT_GAME_DIR = os.path.join(APP_DIR, ".minecraft")

DEFAULTS = {
    "username": "Player",
    "version": "latest-release",
    "ram": 2048,
    "auto_ram": False,
    "java_path": "",
    "jvm_args": "",
    "jvm_preset": "",
    "game_dir": DEFAULT_GAME_DIR,
    # аккаунты (оффлайн-ники) и активный
    "accounts": ["Player"],
    "active_account": "Player",
    # интерфейс
    "lang": "ru",
    "theme": "dark",         # "dark" | "light"
    "accent": "#6fae4a",
    "ui_scale": 1.0,
    "scene": "day",
    # запуск игры
    "win_w": 0,            # 0 = значение игры по умолчанию
    "win_h": 0,
    "fullscreen": False,
    "auto_backup": False,  # резервная копия мира перед запуском
    "autostart": False,            # ярлык в автозагрузке Windows
    "minimize_to_tray_on_launch": False,  # прятать окно при запуске игры
    # прокси: {"type": "http"|"socks5", "host", "port", "user", "pass"}
    "proxy": {"enabled": False, "type": "http", "host": "", "port": 1080,
              "user": "", "pass": ""},
    # зеркала скачивания (пустые списки = официальные серверы Mojang)
    "asset_mirrors": [],
    "lib_mirrors": [],
    # ключ CurseForge API (необязателен: есть зеркало без ключа)
    "cf_api_key": "",
    # третья волна
    "fav_versions": [],       # закреплённые версии (id)
    "profiles": [],           # профили запуска (см. ui._open_profiles)
    "active_profile": "",     # имя применённого профиля ("" — без профиля)
    "world_backups": 5,       # сколько последних копий мира хранить
    # мастер первоначальной настройки (False — показать при первом запуске;
    # апгрейд со старой версии считается настроенным, см. load_settings)
    "onboarding_done": False,
}


def load_settings():
    s = dict(DEFAULTS)
    try:
        with open(SETTINGS_PATH, encoding="utf-8") as f:
            data = json.load(f)
    except Exception:
        data = None
    if isinstance(data, dict):
        s.update(data)
        if "onboarding_done" not in data:
            # апгрейд со старой версии: мастер первого запуска не показываем
            s["onboarding_done"] = True
    _migrate(s)
    return s


def _migrate(s):
    """Приводит старые настройки к новой структуре."""
    nick = (s.get("username") or "Player").strip() or "Player"
    accounts = s.get("accounts")
    if not isinstance(accounts, list) or not accounts:
        accounts = [nick]
    accounts = [str(a).strip() for a in accounts if str(a).strip()]
    if nick not in accounts:
        accounts.insert(0, nick)
    s["accounts"] = accounts

    active = s.get("active_account")
    if not isinstance(active, str) or active not in accounts:
        s["active_account"] = nick if nick in accounts else accounts[0]
    s["username"] = s["active_account"]

    for key in ("asset_mirrors", "lib_mirrors"):
        v = s.get(key)
        if not isinstance(v, list):
            s[key] = []
    if not isinstance(s.get("accent"), str) or not s["accent"].startswith("#"):
        s["accent"] = DEFAULTS["accent"]
    if not isinstance(s.get("cf_api_key"), str):
        s["cf_api_key"] = ""
    if s.get("theme") not in ("dark", "light"):
        s["theme"] = "dark"

    proxy = s.get("proxy")
    if not isinstance(proxy, dict):
        proxy = dict(DEFAULTS["proxy"])
    for k, dv in DEFAULTS["proxy"].items():
        if k not in proxy:
            proxy[k] = dv
    s["proxy"] = proxy

    if s.get("scene") not in ("day", "night", "nether", "cave", "random"):
        s["scene"] = "day"
    if s.get("ui_scale") not in (1.0, 1.25, 1.5):
        try:
            sc = float(s.get("ui_scale"))
            s["ui_scale"] = sc if sc in (1.0, 1.25, 1.5) else 1.0
        except (TypeError, ValueError):
            s["ui_scale"] = 1.0
    for k in ("win_w", "win_h"):
        try:
            s[k] = max(0, int(s.get(k, 0)))
        except (TypeError, ValueError):
            s[k] = 0
    s["fullscreen"] = bool(s.get("fullscreen"))
    s["auto_backup"] = bool(s.get("auto_backup"))
    s["autostart"] = bool(s.get("autostart"))
    s["minimize_to_tray_on_launch"] = bool(
        s.get("minimize_to_tray_on_launch"))

    fav = s.get("fav_versions")
    if isinstance(fav, list):
        seen_f, out_f = set(), []
        for v in fav[:200]:
            v = str(v).strip()
            if v and v not in seen_f:
                seen_f.add(v)
                out_f.append(v)
        s["fav_versions"] = out_f
    else:
        s["fav_versions"] = []
    profs, names = [], set()
    if isinstance(s.get("profiles"), list):
        for p in s["profiles"][:100]:
            name = str((p or {}).get("name", "")).strip() if isinstance(
                p, dict) else ""
            if name and name not in names:
                names.add(name)
                profs.append(p)
    s["profiles"] = profs
    ap = s.get("active_profile")
    s["active_profile"] = ap if isinstance(ap, str) and ap in names else ""
    try:
        s["world_backups"] = min(50, max(1, int(s.get("world_backups", 5))))
    except (TypeError, ValueError):
        s["world_backups"] = 5


def save_settings(s):
    try:
        with open(SETTINGS_PATH, "w", encoding="utf-8") as f:
            json.dump(s, f, indent=2, ensure_ascii=False)
    except Exception:
        pass