feat: 西班牙语日记学习工具与知识库

2026-07-31 14:50:37 +08:00
commit 0d5b0919da
15 changed files with 2140 additions and 0 deletions
@@ -0,0 +1,87 @@
+const DB_NAME = 'SpanishDiary';
+const DB_VERSION = 1;
+const STORE_NAME = 'entries';
+
+let db = null;
+
+function openDb() {
+  return new Promise((resolve, reject) => {
+    if (db) { resolve(db); return; }
+    const req = indexedDB.open(DB_NAME, DB_VERSION);
+    req.onupgradeneeded = (e) => {
+      const d = e.target.result;
+      if (!d.objectStoreNames.contains(STORE_NAME)) {
+        const store = d.createObjectStore(STORE_NAME, { keyPath: 'id' });
+        store.createIndex('date', 'date', { unique: false });
+      }
+    };
+    req.onsuccess = (e) => { db = e.target.result; resolve(db); };
+    req.onerror = (e) => reject(e.target.error);
+  });
+}
+
+function getAllEntries() {
+  return openDb().then(db => {
+    return new Promise((resolve, reject) => {
+      const tx = db.transaction(STORE_NAME, 'readonly');
+      const store = tx.objectStore(STORE_NAME);
+      const index = store.index('date');
+      const req = index.openCursor(null, 'prev');
+      const results = [];
+      req.onsuccess = (e) => {
+        const cursor = e.target.result;
+        if (cursor) { results.push(cursor.value); cursor.continue(); }
+        else resolve(results);
+      };
+      req.onerror = (e) => reject(e.target.error);
+    });
+  });
+}
+
+function getEntry(id) {
+  return openDb().then(db => {
+    return new Promise((resolve, reject) => {
+      const tx = db.transaction(STORE_NAME, 'readonly');
+      const store = tx.objectStore(STORE_NAME);
+      const req = store.get(id);
+      req.onsuccess = () => resolve(req.result || null);
+      req.onerror = (e) => reject(e.target.error);
+    });
+  });
+}
+
+function addEntry(entry) {
+  return openDb().then(db => {
+    return new Promise((resolve, reject) => {
+      const tx = db.transaction(STORE_NAME, 'readwrite');
+      const store = tx.objectStore(STORE_NAME);
+      const req = store.add(entry);
+      req.onsuccess = () => resolve(entry);
+      req.onerror = (e) => reject(e.target.error);
+    });
+  });
+}
+
+function updateEntry(entry) {
+  return openDb().then(db => {
+    return new Promise((resolve, reject) => {
+      const tx = db.transaction(STORE_NAME, 'readwrite');
+      const store = tx.objectStore(STORE_NAME);
+      const req = store.put(entry);
+      req.onsuccess = () => resolve(entry);
+      req.onerror = (e) => reject(e.target.error);
+    });
+  });
+}
+
+function deleteEntry(id) {
+  return openDb().then(db => {
+    return new Promise((resolve, reject) => {
+      const tx = db.transaction(STORE_NAME, 'readwrite');
+      const store = tx.objectStore(STORE_NAME);
+      const req = store.delete(id);
+      req.onsuccess = () => resolve();
+      req.onerror = (e) => reject(e.target.error);
+    });
+  });
+}