1

src/utils/dataProvider.js

@@ -1,4 +1,21 @@
 import axios from 'axios';
+import { openDB } from 'idb';
+
+const DB_NAME = 'HomeworkDB';
+const DB_VERSION = 1;
+
+const initDB = async () => {
+  return openDB(DB_NAME, DB_VERSION, {
+    upgrade(db) {
+      if (!db.objectStoreNames.contains('homework')) {
+        db.createObjectStore('homework');
+      }
+      if (!db.objectStoreNames.contains('config')) {
+        db.createObjectStore('config');
+      }
+    },
+  });
+};
 
 const formatResponse = (data, message = null) => ({
   success: true,
@@ -157,6 +174,96 @@ const providers = {
         );
       }
     }
+  },
+
+  indexedDB: {
+    async loadData(key, date) {
+      try {
+        const classNumber = key.split('/').pop();
+        if (!classNumber) {
+          return formatError('请先设置班号', 'CONFIG_ERROR');
+        }
+
+        const db = await initDB();
+        const storageKey = `homework_${classNumber}_${date}`;
+        const data = await db.get('homework', storageKey);
+
+        if (!data) {
+          const today = new Date().toISOString().split('T')[0];
+          if (date === today) {
+            return formatResponse({
+              homework: {},
+              attendance: { absent: [], late: [] }
+            });
+          }
+          return formatError('数据不存在', 'NOT_FOUND');
+        }
+
+        // 从字符串解析数据
+        return formatResponse(JSON.parse(data));
+      } catch (error) {
+        return formatError('读取IndexedDB数据失败：' + error);
+      }
+    },
+
+    async saveData(key, data, date) {
+      try {
+        const classNumber = key.split('/').pop();
+        if (!classNumber) {
+          return formatError('请先设置班号', 'CONFIG_ERROR');
+        }
+
+        const db = await initDB();
+        const storageKey = `homework_${classNumber}_${date}`;
+        // 将数据序列化为字符串存储
+        await db.put('homework', JSON.stringify(data), storageKey);
+        return formatResponse(null, '保存成功');
+      } catch (error) {
+        return formatError('保存IndexedDB数据失败：' + error);
+      }
+    },
+
+    async loadConfig(key) {
+      try {
+        const classNumber = key.split('/').pop();
+        if (!classNumber) {
+          return formatError('请先设置班号', 'CONFIG_ERROR');
+        }
+
+        const db = await initDB();
+        const storageKey = `config_${classNumber}`;
+        const config = await db.get('config', storageKey);
+
+        if (!config) {
+          return formatResponse({
+            studentList: [],
+            displayOptions: {}
+          });
+        }
+
+        // 从字符串解析配置
+        return formatResponse(JSON.parse(config));
+      } catch (error) {
+        return formatError('读取IndexedDB配置失败：' + error);
+      }
+    },
+
+    async saveConfig(key, config) {
+      try {
+        const classNumber = key.split('/').pop();
+        if (!classNumber) {
+          return formatError('请先设置班号', 'CONFIG_ERROR');
+        }
+
+        const db = await initDB();
+        const storageKey = `config_${classNumber}`;
+        // 将配置序列化为字符串存储
+        await db.put('config', JSON.stringify(config), storageKey);
+        return formatResponse(null, '保存成功');
+      } catch (error) {
+        return formatError('保存IndexedDB配置失败：' + error);
+      }
+    }
   }
 };