243 lines
8.3 KiB
JavaScript
243 lines
8.3 KiB
JavaScript
/**
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* App - 主入口模块
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* 负责初始化所有组件、协调事件流、管理生命周期
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*/
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import { ChatDB } from './chat-db.js';
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import { OllamaAPI } from './ollama-api.js';
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import { state, KEYS } from './state.js';
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import { generateId } from './utils.js';
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// 组件
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import { initToast, showToast } from './components/toast.js';
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import { initLightbox, closeLightbox } from './components/lightbox.js';
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import { initHeader, checkConnection } from './components/header.js';
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import { initModelBar, loadModels, setSelectedModel } from './components/model-bar.js';
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import { initChatArea, renderMessages, clearMessages, enableAutoScroll } from './components/chat-area.js';
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import { initInputArea } from './components/input-area.js';
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import { initSettingsModal, closeSettingsModal } from './components/settings-modal.js';
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import { initHistoryModal, closeHistoryModal } from './components/history-modal.js';
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import { initKBModal } from './components/kb-modal.js';
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import { initPresetBar, initPresetModal } from './components/preset-bar.js';
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import { initPresetManager } from './preset-manager.js';
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import { initVectorStore } from './rag.js';
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function initHelpModal() {
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const helpModal = document.querySelector('#helpModal');
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document.querySelector('#btnHelp').addEventListener('click', () => {
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helpModal.style.display = '';
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});
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document.querySelector('#btnCloseHelp').addEventListener('click', () => {
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helpModal.style.display = 'none';
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});
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helpModal.addEventListener('click', (e) => {
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if (e.target === helpModal) helpModal.style.display = 'none';
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});
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}
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console.log('[Metona] 模块化版本 v4.0.3 ' + new Date().toISOString());
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// ── 会话管理 ──
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function createNewSession() {
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const selectedModel = document.querySelector('#modelSelect')?.value || '';
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const defaultModel = selectedModel || state.get('_defaultModel', '');
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return {
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id: generateId(),
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title: '新会话',
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model: defaultModel,
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messages: [],
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createdAt: Date.now(),
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updatedAt: Date.now()
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};
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}
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async function startNewSession() {
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// 先保存当前会话（如果有的话）
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const db = state.get(KEYS.DB);
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const currentSession = state.get(KEYS.CURRENT_SESSION);
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if (db && currentSession && currentSession.messages.length > 0) {
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currentSession.updatedAt = Date.now();
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await db.saveSession(currentSession);
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}
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// 释放显存，清理模型上下文
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const api = state.get(KEYS.API);
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const model = currentSession?.model || state.get('_defaultModel', '');
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if (api && model) {
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try {
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await api.chat({ model, messages: [], keep_alive: 0 });
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} catch (e) {
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console.warn('[App] 释放显存失败:', e);
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}
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}
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const session = createNewSession();
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state.set(KEYS.CURRENT_SESSION, session);
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state.set(KEYS.IS_HISTORY_VIEW, false);
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document.querySelector('#historyBar').style.display = 'none';
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document.querySelector('#inputArea').style.display = '';
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clearMessages();
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enableAutoScroll();
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renderMessages();
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document.querySelector('#chatInput')?.focus();
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}
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// ── 初始化 ──
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async function init() {
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let db, api;
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try {
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// 1. 初始化 IndexedDB
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db = new ChatDB();
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await db.init();
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state.set(KEYS.DB, db);
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// 2. 读取保存的设置
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const serverUrl = await db.getSetting('serverUrl', 'http://127.0.0.1:11434');
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api = new OllamaAPI(serverUrl);
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state.set(KEYS.API, api);
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// 3. 创建初始会话
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state.set(KEYS.CURRENT_SESSION, createNewSession());
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state.set(KEYS.IS_STREAMING, false);
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state.set(KEYS.IS_HISTORY_VIEW, false);
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state.set(KEYS.NUM_CTX, 24576);
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// 4. 初始化所有组件
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initToast();
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initLightbox();
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initHeader();
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initModelBar();
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initChatArea();
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initInputArea();
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initSettingsModal();
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initHistoryModal();
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initKBModal();
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initPresetBar();
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initPresetModal();
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initHelpModal();
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// 5. 绑定全局事件
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bindGlobalEvents();
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// 6. 检测连接 + 加载模型
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await checkConnection();
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await loadModels();
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// 6.1 初始化向量存储
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await initVectorStore();
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// 6.2 初始化预设管理器（会从 DB 加载并应用上次激活的预设）
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await initPresetManager();
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// 7. 恢复上次选择的模型
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const savedModel = await db.getSetting('selectedModel', '');
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if (savedModel) {
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setSelectedModel(savedModel);
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state.set('_defaultModel', savedModel);
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await db.saveSetting('selectedModel', savedModel);
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}
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// 8. 恢复系统提示词、上下文长度、温度
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const systemPromptEnabled = await db.getSetting('systemPromptEnabled', false);
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const systemPrompt = await db.getSetting('systemPrompt', '');
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const numCtx = await db.getSetting('numCtx', 24576);
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const temperature = await db.getSetting('temperature', 0.7);
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state.set(KEYS.SYSTEM_PROMPT_ENABLED, systemPromptEnabled);
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state.set(KEYS.SYSTEM_PROMPT, systemPrompt);
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state.set(KEYS.NUM_CTX, numCtx);
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state.set('temperature', temperature);
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document.querySelector('#toggleSystemPrompt').checked = systemPromptEnabled;
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document.querySelector('#inputSystemPrompt').disabled = !systemPromptEnabled;
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document.querySelector('#inputSystemPrompt').value = systemPrompt;
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document.querySelector('#inputNumCtx').value = numCtx;
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document.querySelector('#inputTemperature').value = temperature;
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document.querySelector('#tempValue').textContent = parseFloat(temperature).toFixed(1);
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// 9. 聚焦输入框
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document.querySelector('#chatInput')?.focus();
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// 10. 注册 Service Worker (PWA)
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initServiceWorker();
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console.log('[App] 初始化完成');
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} catch (err) {
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console.error('[App] 初始化失败:', err);
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// 即使 DB 失败也尝试运行
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if (!api) {
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api = new OllamaAPI();
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state.set(KEYS.API, api);
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}
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state.set(KEYS.CURRENT_SESSION, createNewSession());
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bindGlobalEvents();
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initToast();
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initLightbox();
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initHeader();
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initModelBar();
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initChatArea();
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initInputArea();
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initSettingsModal();
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initHistoryModal();
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initPresetBar();
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initPresetModal();
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initPresetManager();
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checkConnection().then(loadModels);
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}
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}
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function bindGlobalEvents() {
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// 新建会话
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document.querySelector('#btnNewChat')?.addEventListener('click', startNewSession);
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// ESC 关闭模态框
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document.addEventListener('keydown', (e) => {
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if (e.key === 'Escape') {
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closeSettingsModal();
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closeHistoryModal();
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closeLightbox();
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document.querySelector('#helpModal').style.display = 'none';
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document.querySelector('#kbModal').style.display = 'none';
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}
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});
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// 全局错误捕获
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window.addEventListener('error', (e) => {
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console.error('[App] 未捕获错误:', e.error || e.message);
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showToast(`发生错误: ${e.message}`, 'error', 5000);
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});
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window.addEventListener('unhandledrejection', (e) => {
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console.error('[App] 未处理 Promise 拒绝:', e.reason);
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const msg = e.reason?.message || String(e.reason);
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showToast(`操作失败: ${msg}`, 'error', 5000);
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});
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}
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function initServiceWorker() {
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if (!('serviceWorker' in navigator)) return;
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navigator.serviceWorker.getRegistrations()
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.then(regs => regs.forEach(r => r.unregister()))
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.then(() => caches.keys().then(keys => Promise.all(keys.map(k => caches.delete(k)))))
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.then(() => navigator.serviceWorker.register('sw.js?v=3', { updateViaCache: 'none' }))
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.then(reg => {
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reg.addEventListener('updatefound', () => {
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const w = reg.installing;
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if (w) w.addEventListener('statechange', () => {
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if (w.state === 'activated') window.location.reload();
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});
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});
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reg.update();
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})
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.catch(err => console.warn('[App] Service Worker 注册失败:', err));
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}
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// 启动
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init();
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