feat: 初始提交（仅核心代码，已排除大文件）

2026-07-08 10:29:50 +08:00
commit be7c5842f1
623 changed files with 332897 additions and 0 deletions
@@ -0,0 +1,163 @@
+// IndexedDB 存储封装
+const DB = (function () {
+  const DB_NAME = 'calendar_reminder';
+  const DB_VERSION = 2; // 升级版本以创建 outbox 队列
+  const STORE_EVENTS = 'events';
+  const STORE_OUTBOX = 'outbox';
+
+  let _db;
+
+  function openDB() {
+    return new Promise((resolve, reject) => {
+      const req = indexedDB.open(DB_NAME, DB_VERSION);
+      req.onupgradeneeded = (ev) => {
+        const db = ev.target.result;
+        // 事件存储
+        if (!db.objectStoreNames.contains(STORE_EVENTS)) {
+          const store = db.createObjectStore(STORE_EVENTS, { keyPath: 'id' });
+          store.createIndex('by_start', 'start');
+          store.createIndex('by_updated', 'updatedAt');
+        }
+        // 离线 outbox 队列
+        if (!db.objectStoreNames.contains(STORE_OUTBOX)) {
+          db.createObjectStore(STORE_OUTBOX, { keyPath: 'id' });
+        }
+      };
+      req.onsuccess = () => {
+        _db = req.result;
+        resolve(_db);
+      };
+      req.onerror = () => reject(req.error);
+    });
+  }
+
+  function tx(storeName, mode = 'readonly') {
+    const t = _db.transaction(storeName, mode);
+    return t.objectStore(storeName);
+  }
+
+  async function initDB() {
+    if (_db) return _db;
+    return await openDB();
+  }
+
+  function addEvent(ev) {
+    return new Promise((resolve, reject) => {
+      const store = tx(STORE_EVENTS, 'readwrite');
+      const req = store.add(ev);
+      req.onsuccess = () => resolve(ev);
+      req.onerror = () => reject(req.error);
+    });
+  }
+
+  function updateEvent(ev) {
+    return new Promise((resolve, reject) => {
+      const store = tx(STORE_EVENTS, 'readwrite');
+      const req = store.put(ev);
+      req.onsuccess = () => resolve(ev);
+      req.onerror = () => reject(req.error);
+    });
+  }
+
+  function deleteEvent(id) {
+    return new Promise((resolve, reject) => {
+      const store = tx(STORE_EVENTS, 'readwrite');
+      const req = store.delete(id);
+      req.onsuccess = () => resolve();
+      req.onerror = () => reject(req.error);
+    });
+  }
+
+  function getEvent(id) {
+    return new Promise((resolve, reject) => {
+      const store = tx(STORE_EVENTS, 'readonly');
+      const req = store.get(id);
+      req.onsuccess = () => resolve(req.result);
+      req.onerror = () => reject(req.error);
+    });
+  }
+
+  function listEventsByMonth(year, month) {
+    // month: 1..12
+    const start = new Date(Date.UTC(year, month - 1, 1, 0, 0, 0));
+    const end = new Date(Date.UTC(year, month, 0, 23, 59, 59));
+    return new Promise((resolve, reject) => {
+      const store = tx(STORE_EVENTS, 'readonly');
+      const idx = store.index('by_start');
+      const range = IDBKeyRange.bound(start.toISOString(), end.toISOString());
+      const result = [];
+      const req = idx.openCursor(range);
+      req.onsuccess = (e) => {
+        const cursor = e.target.result;
+        if (cursor) {
+          result.push(cursor.value);
+          cursor.continue();
+        } else {
+          resolve(result);
+        }
+      };
+      req.onerror = () => reject(req.error);
+    });
+  }
+
+  // --- Outbox 队列 ---
+  function genId() { return Date.now() + '-' + Math.random().toString(36).slice(2); }
+
+  function addOutbox(entry) {
+    return new Promise((resolve, reject) => {
+      const store = tx(STORE_OUTBOX, 'readwrite');
+      const req = store.add(entry);
+      req.onsuccess = () => resolve(entry);
+      req.onerror = () => reject(req.error);
+    });
+  }
+
+  function addOutboxUpsert(ev) {
+    const entry = { id: genId(), type: 'upsert', payload: ev, timestamp: new Date().toISOString() };
+    return addOutbox(entry);
+  }
+
+  function addOutboxDelete(id) {
+    const entry = { id: genId(), type: 'delete', payload: { id }, timestamp: new Date().toISOString() };
+    return addOutbox(entry);
+  }
+
+  function listOutbox() {
+    return new Promise((resolve, reject) => {
+      const store = tx(STORE_OUTBOX, 'readonly');
+      const result = [];
+      const req = store.openCursor();
+      req.onsuccess = (e) => {
+        const cursor = e.target.result;
+        if (cursor) { result.push(cursor.value); cursor.continue(); }
+        else { resolve(result); }
+      };
+      req.onerror = () => reject(req.error);
+    });
+  }
+
+  function removeOutbox(id) {
+    return new Promise((resolve, reject) => {
+      const store = tx(STORE_OUTBOX, 'readwrite');
+      const req = store.delete(id);
+      req.onsuccess = () => resolve();
+      req.onerror = () => reject(req.error);
+    });
+  }
+
+  return {
+    initDB,
+    addEvent,
+    updateEvent,
+    deleteEvent,
+    getEvent,
+    listEventsByMonth,
+    // outbox
+    addOutboxUpsert,
+    addOutboxDelete,
+    listOutbox,
+    removeOutbox,
+  };
+})();
+
+window.DB = DB;