flat: 暂存

common/IndexedDBHelper.js

@@ -250,6 +250,46 @@ class IndexedDBHelper {
             request.onerror = (event) => reject(`Delete Error: ${event.target.error}`);
         });
     }
+    /**
+     * 根据条件删除所有匹配的数据
+     * @param {string} storeName - 数据仓库名
+     * @param {function} conditionFn - 判断是否删除 (record) => boolean
+     * @returns {Promise}
+     */
+    deleteByCondition(storeName, conditionFn) {
+        return new Promise((resolve, reject) => {
+            if (!this.db) {
+                reject('Database not initialized');
+                return;
+            }
+
+            const transaction = this.db.transaction([storeName], 'readwrite');
+            const store = transaction.objectStore(storeName);
+            const request = store.openCursor();
+
+            request.onsuccess = (event) => {
+                const cursor = event.target.result;
+                if (cursor && cursor.value) {
+                    try {
+                        // console.log(cursor.value)
+                        const shouldDelete = conditionFn(cursor.value);
+                        if (shouldDelete) {
+                            cursor.delete();
+                        }
+                    } catch (err) {
+                        console.error('Condition function error:', err);
+                    }
+                    cursor.continue();
+                } else {
+                    resolve('All matching records deleted successfully');
+                }
+            };
+
+            request.onerror = (event) => {
+                reject(`Delete by condition failed: ${event.target.error}`);
+            };
+        });
+    }
 
     /**
      * 通过索引查询数据