// ==========================================
// State Management
// ==========================================

const State = {
    settings: {
        apiEndpoint: '',
        apiKey: '',
        model: 'gpt-3.5-turbo',
        stream: true,
        saveHistory: true,
        showThinking: true,
        systemPrompt: '',
        maxTokens: 4096,
        temperature: 0.7,
        topP: 1,
        presencePenalty: 0
    },
    models: [],
    chats: [],
    currentChatId: null,
    isGenerating: false,
    abortController: null
};

function loadSettings() {
    const saved = Storage.get('chatSwitchboard_settings');
    if (saved) {
        State.settings = { ...State.settings, ...saved };
    }
}

function saveSettings() {
    Storage.set('chatSwitchboard_settings', State.settings);
}

function loadModels() {
    State.models = Storage.get('chatSwitchboard_models', []);
}

function saveModels() {
    Storage.set('chatSwitchboard_models', State.models);
}

function loadChats() {
    State.chats = Storage.get('chatSwitchboard_chats', []);
}

function saveChats() {
    if (State.settings.saveHistory) {
        Storage.set('chatSwitchboard_chats', State.chats);
    }
}

function createChat(title, messages) {
    const chat = {
        id: Date.now().toString(),
        title,
        messages,
        model: State.settings.model,
        createdAt: new Date().toISOString(),
        updatedAt: new Date().toISOString()
    };
    State.chats.unshift(chat);
    if (State.chats.length > 100) {
        State.chats = State.chats.slice(0, 100);
    }
    saveChats();
    return chat;
}

function updateChat(chatId, updates) {
    const chat = State.chats.find(c => c.id === chatId);
    if (chat) {
        Object.assign(chat, updates, { updatedAt: new Date().toISOString() });
        saveChats();
    }
}

function deleteChat(chatId) {
    State.chats = State.chats.filter(c => c.id !== chatId);
    saveChats();
}

function getChat(chatId) {
    return State.chats.find(c => c.id === chatId);
}

function getCurrentChat() {
    return State.currentChatId ? getChat(State.currentChatId) : null;
}