Initial commit: accountbook project

- Node.js backend server
- Frontend application
- Backup script
- Project specification

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/lib/api.js

@@ -0,0 +1,171 @@
+const API_BASE = ''; // 使用相对路径，同源代理
+
+function getAuthHeaders() {
+  const token = typeof window !== 'undefined' ? localStorage.getItem('token') : null;
+  return token ? { Authorization: `Bearer ${token}` } : {};
+}
+
+async function apiCall(url, options = {}) {
+  const res = await fetch(`${API_BASE}${url}`, {
+    ...options,
+    headers: {
+      'Content-Type': 'application/json',
+      ...getAuthHeaders(),
+      ...options.headers,
+    },
+  });
+
+  const data = await res.json();
+
+  if (!res.ok) {
+    throw new Error(data.error || '请求失败');
+  }
+
+  return data;
+}
+
+// 认证
+export async function login(username, password) {
+  const data = await apiCall('/api/auth/login', {
+    method: 'POST',
+    body: JSON.stringify({ username, password }),
+  });
+  if (typeof window !== 'undefined') {
+    localStorage.setItem('token', data.token);
+  }
+  return data;
+}
+
+export async function register(username, password) {
+  const data = await apiCall('/api/auth/register', {
+    method: 'POST',
+    body: JSON.stringify({ username, password }),
+  });
+  if (typeof window !== 'undefined') {
+    localStorage.setItem('token', data.token);
+  }
+  return data;
+}
+
+export function logout() {
+  if (typeof window !== 'undefined') {
+    localStorage.removeItem('token');
+  }
+}
+
+export function isLoggedIn() {
+  if (typeof window === 'undefined') return false;
+  return !!localStorage.getItem('token');
+}
+
+// 账目
+export async function getRecords(month, type = 'all') {
+  let url = `/api/records?month=${month}`;
+  if (type !== 'all') {
+    url += `&type=${type}`;
+  }
+  return apiCall(url);
+}
+
+export async function getStats(month) {
+  return apiCall(`/api/stats?month=${month}`);
+}
+
+export async function createRecord(data) {
+  return apiCall('/api/records', {
+    method: 'POST',
+    body: JSON.stringify(data),
+  });
+}
+
+export async function updateRecord(id, data) {
+  return apiCall(`/api/records/${id}`, {
+    method: 'PUT',
+    body: JSON.stringify(data),
+  });
+}
+
+export async function deleteRecord(id) {
+  return apiCall(`/api/records/${id}`, {
+    method: 'DELETE',
+  });
+}
+
+// 搜索
+export async function searchRecords(keyword) {
+  return apiCall(`/api/records/search?q=${encodeURIComponent(keyword)}`);
+}
+
+// 统计
+export async function getTrendStats(period = 'month', month) {
+  let url = `/api/stats/trend?period=${period}`;
+  if (month) url += `&month=${month}`;
+  return apiCall(url);
+}
+
+export async function getCategoryStats(month, type = 'all') {
+  let url = `/api/stats/category?type=${type}`;
+  if (month) url += `&month=${month}`;
+  return apiCall(url);
+}
+
+// 周期性账单
+export async function getRecurringBills() {
+  return apiCall('/api/recurring');
+}
+
+export async function createRecurringBill(data) {
+  return apiCall('/api/recurring', {
+    method: 'POST',
+    body: JSON.stringify(data),
+  });
+}
+
+export async function updateRecurringBill(id, data) {
+  return apiCall(`/api/recurring/${id}`, {
+    method: 'PUT',
+    body: JSON.stringify(data),
+  });
+}
+
+export async function deleteRecurringBill(id) {
+  return apiCall(`/api/recurring/${id}`, {
+    method: 'DELETE',
+  });
+}
+
+export async function applyRecurringBill(id) {
+  return apiCall(`/api/recurring/${id}/apply`, {
+    method: 'POST',
+  });
+}
+
+// 分类
+export async function getCategories() {
+  return apiCall('/api/categories');
+}
+
+export async function createCategory(data) {
+  return apiCall('/api/categories', {
+    method: 'POST',
+    body: JSON.stringify(data),
+  });
+}
+
+export async function deleteCategory(id) {
+  return apiCall(`/api/categories/${id}`, {
+    method: 'DELETE',
+  });
+}
+
+// 数据导入导出
+export async function exportData() {
+  return apiCall('/api/export');
+}
+
+export async function importData(data) {
+  return apiCall('/api/import', {
+    method: 'POST',
+    body: JSON.stringify(data),
+  });
+}

frontend/lib/categories.js

@@ -0,0 +1,31 @@
+export const DEFAULT_CATEGORIES = {
+  expense: [
+    { name: '餐饮', icon: '🍜' },
+    { name: '买菜', icon: '🥬' },
+    { name: '交通', icon: '🚗' },
+    { name: '购物', icon: '🛒' },
+    { name: '娱乐', icon: '🎮' },
+    { name: '房租', icon: '🏠' },
+    { name: '房贷', icon: '🏦' },
+    { name: '亲情卡', icon: '💳' },
+    { name: '水电', icon: '💧' },
+    { name: '衣服', icon: '👔' },
+    { name: '通讯', icon: '📱' },
+    { name: '日用品', icon: '🧴' },
+    { name: '美妆', icon: '💄' },
+    { name: '医疗', icon: '🏥' },
+    { name: '养娃', icon: '👶' },
+    { name: '家电', icon: '📺' },
+    { name: '家具', icon: '🛋️' },
+    { name: '装修', icon: '🔨' },
+    { name: '宠物', icon: '🐕' },
+    { name: '其他', icon: '📝' },
+  ],
+  income: [
+    { name: '工资', icon: '💰' },
+    { name: '奖金', icon: '🎁' },
+    { name: '理财', icon: '📈' },
+    { name: '红包', icon: '🧧' },
+    { name: '其他', icon: '📝' },
+  ],
+};