const Sidebar = {
    _el: null,
    _gameListEl: null,
    _gameToggleEl: null,
    _gameLabelEl: null,
    _gameData: [],

    init() {
        this._el = document.getElementById('sidebar');
        this._gameListEl = document.getElementById('game-list');
        this._gameToggleEl = document.getElementById('game-selector-toggle');
        this._gameLabelEl = document.getElementById('game-selector-label');
        this._topbarLogo = document.getElementById('topbar-logo-title');

        document.getElementById('sidebar-toggle').addEventListener('click', () => this.toggle());
        this._gameToggleEl.addEventListener('click', () => this._toggleGameList());

        const saved = localStorage.getItem('turbosu-sidebar-collapsed');
        if (saved === 'true') this.collapse(true);

        this._loadGames();
    },

    toggle() {
        this._el.classList.toggle('collapsed');
        this._el.classList.toggle('expanded');
        const isCollapsed = this._el.classList.contains('collapsed');
        this._topbarLogo.classList.toggle('hidden', !isCollapsed);
        localStorage.setItem('turbosu-sidebar-collapsed', isCollapsed);
    },

    collapse(silent) {
        this._el.classList.add('collapsed');
        this._el.classList.remove('expanded');
        this._topbarLogo.classList.remove('hidden');
        if (!silent) localStorage.setItem('turbosu-sidebar-collapsed', 'true');
    },

    expand(silent) {
        this._el.classList.remove('collapsed');
        this._el.classList.add('expanded');
        this._topbarLogo.classList.add('hidden');
        if (!silent) localStorage.setItem('turbosu-sidebar-collapsed', 'false');
    },

    async _loadGames() {
        const games = await API.getGames();
        this._gameData = games;
        this._gameListEl.innerHTML = '';

        if (!Array.isArray(games) || games.length === 0) {
            this._gameListEl.innerHTML = '<div style="padding:8px 12px;color:var(--text-tertiary);font-size:12px;">' + Lang.t('noGamePlugins') + '</div>';
            return;
        }

        const selectedId = (await API.getConfig()).selected_game_id;
        games.forEach(game => {
            const item = document.createElement('button');
            item.className = 'nav-item';
            if (selectedId === game.id) item.classList.add('active');
            item.innerHTML = `
                <span style="font-size:16px;flex-shrink:0;">&#x25C9;</span>
                <span class="nav-label">${game.name}</span>
            `;
            item.addEventListener('click', () => this._selectGame(game.id));
            this._gameListEl.appendChild(item);
        });

        this._updateGameLabel(selectedId, games);
    },

    _updateGameLabel(selectedId, games) {
        if (selectedId && games) {
            const game = games.find(g => g.id === selectedId);
            if (game) {
                this._gameLabelEl.textContent = game.name;
                return;
            }
        }
        this._gameLabelEl.textContent = Lang.t('selectGame');
    },

    async _selectGame(gameId) {
        await API.updateConfig({ selected_game_id: gameId });
        const cfg = await API.getConfig();
        if (!cfg.use_unified_port) {
            const gamePort = (cfg.game_ports || {})[gameId] || this._gameData.find(g => g.id === gameId)?.default_port || 20777;
            await API.updateConfig({ telemetry_port: gamePort });
        }
        await API.stopTelemetry();
        await API.startTelemetry();
        this._gameListEl.querySelectorAll('.nav-item').forEach(el => el.classList.remove('active'));
        const items = this._gameListEl.querySelectorAll('.nav-item');
        items.forEach((item, idx) => {
            if (this._gameData[idx] && this._gameData[idx].id === gameId) item.classList.add('active');
        });
        const games = await API.getGames();
        this._updateGameLabel(gameId, games);
        this._loadGames();

        if (typeof Router !== 'undefined' && Router.currentPage === 'scene') {
            Router.navigate('scene');
        }
    },

    _toggleGameList() {
        const toggle = this._gameToggleEl;
        const list = this._gameListEl;
        const isCollapsed = toggle.classList.contains('collapsed');

        if (isCollapsed) {
            toggle.classList.remove('collapsed');
            list.classList.remove('collapsed');
        } else {
            toggle.classList.add('collapsed');
            list.classList.add('collapsed');
        }
    },

    setActive(route) {
        this._el.querySelectorAll('.nav-item[data-route]').forEach(el => {
            el.classList.toggle('active', el.getAttribute('data-route') === route);
        });
    }
};

window.Sidebar = Sidebar;