迁移数据库从 SQLite 到 PostgreSQL
- 更新 deno.json 添加 postgres 依赖 - 重构 db/index.ts 使用 PostgreSQL 连接和适配器 - 更新所有路由文件支持异步数据库操作 - 将 SQLite 语法转换为 PostgreSQL 语法 - 添加数据库迁移文档和 schema 文件
This commit is contained in:
ethan.chen
137
MIGRATION.md
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137
MIGRATION.md
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@@ -0,0 +1,137 @@
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# SQLite 到 PostgreSQL 迁移指南
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本文档说明如何将项目从 SQLite 迁移到 PostgreSQL。
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## 主要变更
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### 1. 依赖更新
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- 添加了 `postgres` 库用于 PostgreSQL 连接
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- 移除了 `node:sqlite` 依赖
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### 2. 数据库连接
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数据库连接现在通过环境变量配置，支持以下方式：
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**方式一：使用 DATABASE_URL**
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```bash
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export DATABASE_URL="postgresql://user:password@localhost:5432/dbname"
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```
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**方式二：使用独立的环境变量**
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```bash
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export DB_USER=postgres
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export DB_PASSWORD=postgres
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export DB_HOST=localhost
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export DB_PORT=5432
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export DB_NAME=media
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```
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### 3. SQL 语法变更
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#### 占位符
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- **SQLite**: 使用 `?` 作为占位符
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- **PostgreSQL**: 使用 `$1, $2, $3...` 作为占位符
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- **解决方案**: 代码中已创建适配器自动转换
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#### 日期时间函数
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- **SQLite**: `datetime('now')`
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- **PostgreSQL**: `NOW()` 或 `CURRENT_TIMESTAMP`
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- **已更新**: 所有 `datetime('now')` 已替换为 `NOW()`
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#### 获取插入的 ID
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- **SQLite**: `result.lastInsertRowid`
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- **PostgreSQL**: 使用 `RETURNING id` 子句
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- **已更新**: INSERT 语句已添加 `RETURNING id`
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### 4. 数据库 Schema
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需要创建以下表结构：
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#### media 表
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```sql
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CREATE TABLE media (
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id SERIAL PRIMARY KEY,
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title VARCHAR(255) NOT NULL,
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type VARCHAR(50) NOT NULL,
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rating INTEGER,
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notes TEXT,
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platform VARCHAR(100),
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date DATE,
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created_at TIMESTAMP DEFAULT NOW(),
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updated_at TIMESTAMP DEFAULT NOW()
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);
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```
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#### users 表
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```sql
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CREATE TABLE users (
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id SERIAL PRIMARY KEY,
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username VARCHAR(100) UNIQUE NOT NULL,
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password VARCHAR(255) NOT NULL,
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created_at TIMESTAMP DEFAULT NOW()
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);
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```
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## 迁移步骤
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### 1. 安装 PostgreSQL
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确保已安装并运行 PostgreSQL 数据库。
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### 2. 创建数据库
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```bash
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createdb media
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# 或使用 psql
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psql -U postgres
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CREATE DATABASE media;
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```
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### 3. 创建表结构
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使用上面提供的 SQL 语句创建表。
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### 4. 迁移数据（可选）
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如果需要从 SQLite 迁移现有数据，可以使用以下方法：
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```bash
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# 导出 SQLite 数据
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sqlite3 media.db .dump > data.sql
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# 手动转换并导入到 PostgreSQL
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# 注意：需要修改 SQL 语法以兼容 PostgreSQL
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```
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### 5. 配置环境变量
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设置数据库连接信息（见上面的环境变量配置）。
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### 6. 测试连接
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运行应用并测试数据库连接是否正常。
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## 注意事项
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1. **数据类型差异**:
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- SQLite 的 `INTEGER` 对应 PostgreSQL 的 `INTEGER` 或 `SERIAL`
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- SQLite 的 `TEXT` 对应 PostgreSQL 的 `VARCHAR` 或 `TEXT`
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- SQLite 的 `REAL` 对应 PostgreSQL 的 `REAL` 或 `DOUBLE PRECISION`
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2. **事务处理**:
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- PostgreSQL 支持更完善的事务和并发控制
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- 代码中的适配器已处理基本的异步操作
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3. **性能优化**:
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- PostgreSQL 支持索引优化
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- 建议为常用查询字段添加索引：
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```sql
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CREATE INDEX idx_media_type ON media(type);
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CREATE INDEX idx_media_rating ON media(rating);
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CREATE INDEX idx_media_date ON media(date);
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```
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4. **连接池**:
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- `postgres` 库默认使用连接池
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- 可以通过配置选项调整连接池大小
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## 回滚方案
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如果需要回滚到 SQLite：
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1. 恢复 `db/index.ts` 中的 SQLite 连接代码
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2. 恢复所有 SQL 查询中的 `datetime('now')`
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3. 移除 INSERT 语句中的 `RETURNING id`
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4. 更新 `deno.json` 移除 postgres 依赖
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94
db/index.ts
94
db/index.ts
@@ -4,13 +4,93 @@
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* @LastEditTime: 2025-06-13 14:23:03
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* @FilePath: /my-score/honoback/db/index.ts
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*/
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import { DatabaseSync } from "node:sqlite"
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import { join, dirname } from 'node:path'
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import { fileURLToPath } from 'node:url'
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import postgres from "postgres";
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const __dirname = dirname(fileURLToPath(import.meta.url))
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// 从环境变量获取数据库连接信息
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const DATABASE_URL =
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Deno.env.get("DATABASE_URL") ||
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`postgresql://${Deno.env.get("DB_USER") || "postgres"}:${
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Deno.env.get("DB_PASSWORD") || "postgres"
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}@${Deno.env.get("DB_HOST") || "localhost"}:${
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Deno.env.get("DB_PORT") || "5432"
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}/${Deno.env.get("DB_NAME") || "media"}`;
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// 初始化数据库连接
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const db = new DatabaseSync(join(__dirname, 'media.db'))
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// 初始化 PostgreSQL 连接
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const sql = postgres(DATABASE_URL);
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export { db }
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// 将 SQLite 的 ? 占位符转换为 PostgreSQL 的 $1, $2, $3...
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function convertQuery(query: string, params: any[]): [string, any[]] {
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let pgQuery = query;
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let paramIndex = 1;
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const pgParams: any[] = [];
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// 替换 ? 为 $1, $2, $3...
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pgQuery = pgQuery.replace(/\?/g, () => {
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if (paramIndex <= params.length) {
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pgParams.push(params[paramIndex - 1]);
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}
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return `$${paramIndex++}`;
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});
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return [pgQuery, pgParams];
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}
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// 创建一个兼容的数据库接口，模拟 SQLite 的 prepare 方法
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class DatabaseAdapter {
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private sql: ReturnType<typeof postgres>;
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constructor(sql: ReturnType<typeof postgres>) {
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this.sql = sql;
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}
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prepare(query: string) {
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return {
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// all() 方法用于查询多条记录
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all: async (...params: any[]) => {
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const [pgQuery, pgParams] = convertQuery(query, params);
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const result = await this.sql.unsafe(pgQuery, pgParams);
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return result;
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},
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// get() 方法用于查询单条记录
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get: async (...params: any[]) => {
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const [pgQuery, pgParams] = convertQuery(query, params);
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const result = await this.sql.unsafe(pgQuery, pgParams);
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return result[0] || null;
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},
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// run() 方法用于执行 INSERT/UPDATE/DELETE
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run: async (...params: any[]) => {
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const [pgQuery, pgParams] = convertQuery(query, params);
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const result = await this.sql.unsafe(pgQuery, pgParams);
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// 如果是 INSERT 语句，返回类似 SQLite 的 lastInsertRowid
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if (query.trim().toUpperCase().startsWith("INSERT")) {
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// PostgreSQL 使用 RETURNING 子句获取插入的 ID
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if (query.includes("RETURNING")) {
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return {
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lastInsertRowid: result[0]?.id || null,
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changes: result.length,
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};
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} else {
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// 如果没有 RETURNING，需要查询最后插入的 ID
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// 注意：这需要表有 id 列且是 SERIAL 类型
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const lastIdResult = await this.sql.unsafe(
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"SELECT lastval() as id"
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);
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return {
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lastInsertRowid: lastIdResult[0]?.id || null,
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changes: result.length || 1,
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};
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}
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}
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return {
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changes: result.length || 0,
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};
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},
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};
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}
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}
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const db = new DatabaseAdapter(sql);
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export { db, sql };
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29
db/schema.sql
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db/schema.sql
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-- PostgreSQL 数据库 Schema
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-- 用于创建 media 和 users 表
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-- 创建 media 表
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CREATE TABLE IF NOT EXISTS media (
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id SERIAL PRIMARY KEY,
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title VARCHAR(255) NOT NULL,
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type VARCHAR(50) NOT NULL,
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rating INTEGER,
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notes TEXT,
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platform VARCHAR(100),
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date DATE,
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created_at TIMESTAMP DEFAULT NOW(),
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updated_at TIMESTAMP DEFAULT NOW()
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);
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-- 创建 users 表
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CREATE TABLE IF NOT EXISTS users (
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id SERIAL PRIMARY KEY,
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username VARCHAR(100) UNIQUE NOT NULL,
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password VARCHAR(255) NOT NULL,
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created_at TIMESTAMP DEFAULT NOW()
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);
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-- 创建索引以优化查询性能
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CREATE INDEX IF NOT EXISTS idx_media_type ON media(type);
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CREATE INDEX IF NOT EXISTS idx_media_rating ON media(rating);
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CREATE INDEX IF NOT EXISTS idx_media_date ON media(date);
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CREATE INDEX IF NOT EXISTS idx_users_username ON users(username);
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@@ -1,6 +1,7 @@
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{
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"imports": {
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"hono": "jsr:@hono/hono@^4.7.11"
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"hono": "jsr:@hono/hono@^4.7.11",
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"postgres": "npm:postgres@^3.4.3"
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},
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"tasks": {
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"start": "deno run --allow-net --allow-read --allow-write --allow-env --watch main.ts"
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16
deploy.sh
16
deploy.sh
@@ -2,7 +2,7 @@
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###
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# @Date: 2025-06-13 16:11:38
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# @LastEditors: 陈子健
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# @LastEditTime: 2025-06-23 16:56:58
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# @LastEditTime: 2025-06-23 17:24:22
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# @FilePath: /my-score/honoback/deploy.sh
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###
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@@ -19,11 +19,15 @@ deno cache main.ts
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echo "Creating remote directory..."
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ssh $USER@$SERVER "mkdir -p $REMOTE_DIR"
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# 同步文件到服务器
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echo "Syncing files to server..."
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rsync -avz --exclude 'db/media.db' \
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--exclude '.git' \
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./ $USER@$SERVER:$REMOTE_DIR/
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# 1. 远程备份数据库
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ssh $USER@$SERVER "cp $REMOTE_DIR/db/media.db $REMOTE_DIR/db/media.db.bak 2>/dev/null || true"
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# 2. 同步代码到服务器（只同步白名单内容，且排除 media.db）
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rsync -avz --exclude='.git/' --exclude='node_modules/' --exclude='db/media.db' \
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--include='*.ts' --include='*.json' --include='*.sh' --include='*.service' \
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--include='db/' --include='db/*.ts' --include='routes/' --include='routes/*.ts' \
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--exclude='*' ./ $USER@$SERVER:$REMOTE_DIR
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# 在服务器上安装依赖并重启服务
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echo "Installing and starting systemd service..."
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198
routes/media.ts
198
routes/media.ts
@@ -1,143 +1,177 @@
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import { Hono } from 'hono'
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import { db } from '../db/index.ts'
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import type { JwtVariables } from 'hono/jwt'
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import { authMiddleware } from '../auth.ts'
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import { Hono } from "hono";
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import { db } from "../db/index.ts";
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import type { JwtVariables } from "hono/jwt";
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import { authMiddleware } from "../auth.ts";
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const media = new Hono<{ Variables: JwtVariables }>()
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const media = new Hono<{ Variables: JwtVariables }>();
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media.use('/*', authMiddleware)
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// 查询满分（10分）作品，不需要JWT验证
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media.get("/perfect", async (c) => {
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try {
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const perfectList = await db
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.prepare("SELECT * FROM media WHERE rating = 10")
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.all();
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return c.json({
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code: 0,
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data: perfectList,
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message: "Success",
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});
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} catch (error: any) {
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return c.json({ code: 1, data: {}, message: error.message }, 500);
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}
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});
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media.use("/*", authMiddleware);
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// 获取所有媒体记录
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media.get('/list', (c) => {
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media.get("/list", async (c) => {
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try {
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const mediaList = db.prepare('SELECT * FROM media').all()
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const mediaList = await db.prepare("SELECT * FROM media").all();
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return c.json({
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code: 0,
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data: mediaList,
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message: 'Success'
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})
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message: "Success",
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});
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} catch (error: any) {
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return c.json({ code: 1, data: {}, message: error.message }, 500)
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return c.json({ code: 1, data: {}, message: error.message }, 500);
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}
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})
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});
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// 创建新的媒体记录
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media.post('/create', async (c) => {
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media.post("/create", async (c) => {
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try {
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const data = await c.req.json()
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const { title, type, rating, notes, platform, date } = data
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const data = await c.req.json();
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const { title, type, rating, notes, platform, date } = data;
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const result = db.prepare(`
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const result = await db
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.prepare(
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`
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INSERT INTO media (title, type, rating, notes, platform, date, created_at, updated_at)
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VALUES (?, ?, ?, ?, ?, ?, datetime('now'), datetime('now'))
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`).run(title, type, rating, notes, platform, date)
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VALUES (?, ?, ?, ?, ?, ?, NOW(), NOW())
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RETURNING id
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`
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)
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.run(title, type, rating, notes, platform, date);
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const newMedia = db.prepare('SELECT * FROM media WHERE id = ?').get(result.lastInsertRowid)
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const newMedia = await db
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.prepare("SELECT * FROM media WHERE id = ?")
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.get(result.lastInsertRowid);
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return c.json({
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code: 0,
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data: newMedia,
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message: 'Created successfully'
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}, 201)
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return c.json(
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{
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code: 0,
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data: newMedia,
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message: "Created successfully",
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},
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201
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);
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} catch (error: any) {
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return c.json({ code: 2, data: {}, message: error.message }, 500)
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return c.json({ code: 2, data: {}, message: error.message }, 500);
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}
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})
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});
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// 更新媒体记录
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media.put('/updateById/:id', async (c) => {
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media.put("/updateById/:id", async (c) => {
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try {
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const id = c.req.param('id')
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const data = await c.req.json()
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const { title, type, rating, notes, platform, date } = data
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const id = c.req.param("id");
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const data = await c.req.json();
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const { title, type, rating, notes, platform, date } = data;
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db.prepare(`
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await db
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.prepare(
|
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`
|
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UPDATE media
|
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SET title = ?, type = ?, rating = ?, notes = ?, platform = ?, date = ?, updated_at = datetime('now')
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SET title = ?, type = ?, rating = ?, notes = ?, platform = ?, date = ?, updated_at = NOW()
|
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WHERE id = ?
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`).run(title, type, rating, notes, platform, date, id)
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`
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)
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.run(title, type, rating, notes, platform, date, id);
|
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const updatedMedia = db.prepare('SELECT * FROM media WHERE id = ?').get(id)
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const updatedMedia = await db
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.prepare("SELECT * FROM media WHERE id = ?")
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.get(id);
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if (!updatedMedia) {
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return c.json({ code: 1, data: {}, message: 'Media not found' }, 404)
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||||
return c.json({ code: 1, data: {}, message: "Media not found" }, 404);
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||||
}
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return c.json({
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code: 0,
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data: updatedMedia,
|
||||
message: 'Updated successfully'
|
||||
})
|
||||
message: "Updated successfully",
|
||||
});
|
||||
} catch (error: any) {
|
||||
return c.json({ code: 2, data: {}, message: error.message }, 500)
|
||||
return c.json({ code: 2, data: {}, message: error.message }, 500);
|
||||
}
|
||||
})
|
||||
});
|
||||
|
||||
// 删除媒体记录
|
||||
media.delete('/deleteById/:id', async (c) => {
|
||||
media.delete("/deleteById/:id", async (c) => {
|
||||
try {
|
||||
const id = c.req.param('id')
|
||||
db.prepare('DELETE FROM media WHERE id = ?').run(id)
|
||||
return c.json({ code: 0, data: {}, message: 'Deleted successfully' })
|
||||
const id = c.req.param("id");
|
||||
await db.prepare("DELETE FROM media WHERE id = ?").run(id);
|
||||
return c.json({ code: 0, data: {}, message: "Deleted successfully" });
|
||||
} catch (error: any) {
|
||||
return c.json({ code: 2, data: {}, message: error.message }, 500)
|
||||
return c.json({ code: 2, data: {}, message: error.message }, 500);
|
||||
}
|
||||
})
|
||||
});
|
||||
|
||||
// 分页查询媒体记录
|
||||
media.get('/page', async (c) => {
|
||||
media.get("/page", async (c) => {
|
||||
try {
|
||||
const type = c.req.query('type')
|
||||
const currentPage = parseInt(c.req.query('currentPage') || '1')
|
||||
const pageSize = parseInt(c.req.query('pageSize') || '10')
|
||||
const title = c.req.query('title') || ''
|
||||
const startDate = c.req.query('startDate')
|
||||
const endDate = c.req.query('endDate')
|
||||
const sortBy = c.req.query('sortBy') || 'date'
|
||||
const sortType = c.req.query('sortType') || 'desc'
|
||||
const type = c.req.query("type");
|
||||
const currentPage = parseInt(c.req.query("currentPage") || "1");
|
||||
const pageSize = parseInt(c.req.query("pageSize") || "10");
|
||||
const title = c.req.query("title") || "";
|
||||
const startDate = c.req.query("startDate");
|
||||
const endDate = c.req.query("endDate");
|
||||
const sortBy = c.req.query("sortBy") || "date";
|
||||
const sortType = c.req.query("sortType") || "desc";
|
||||
|
||||
if (!type) {
|
||||
return c.json({ code: 1, data: {}, message: 'Type is required' }, 400)
|
||||
return c.json({ code: 1, data: {}, message: "Type is required" }, 400);
|
||||
}
|
||||
|
||||
let query = 'SELECT * FROM media WHERE type = ?'
|
||||
const params = [type]
|
||||
let query = "SELECT * FROM media WHERE type = ?";
|
||||
const params = [type];
|
||||
|
||||
if (title) {
|
||||
query += ' AND title LIKE ?'
|
||||
params.push(`%${title}%`)
|
||||
query += " AND title LIKE ?";
|
||||
params.push(`%${title}%`);
|
||||
}
|
||||
if (startDate) {
|
||||
query += ' AND date >= ?'
|
||||
params.push(startDate)
|
||||
query += " AND date >= ?";
|
||||
params.push(startDate);
|
||||
}
|
||||
if (endDate) {
|
||||
query += ' AND date <= ?'
|
||||
params.push(endDate)
|
||||
query += " AND date <= ?";
|
||||
params.push(endDate);
|
||||
}
|
||||
|
||||
// 添加排序
|
||||
if (sortBy === 'date') {
|
||||
query += ` ORDER BY date ${sortType.toUpperCase()}`
|
||||
} else if (sortBy === 'score') {
|
||||
query += ` ORDER BY rating ${sortType.toUpperCase()}`
|
||||
if (sortBy === "date") {
|
||||
query += ` ORDER BY date ${sortType.toUpperCase()}`;
|
||||
} else if (sortBy === "score") {
|
||||
query += ` ORDER BY rating ${sortType.toUpperCase()}`;
|
||||
}
|
||||
|
||||
// 添加分页
|
||||
const offset = (currentPage - 1) * pageSize
|
||||
query += ' LIMIT ? OFFSET ?'
|
||||
params.push(pageSize.toString(), offset.toString())
|
||||
const offset = (currentPage - 1) * pageSize;
|
||||
query += " LIMIT ? OFFSET ?";
|
||||
params.push(pageSize.toString(), offset.toString());
|
||||
|
||||
// 获取总数
|
||||
const countQuery = query
|
||||
.replace('SELECT *', 'SELECT COUNT(*) as total')
|
||||
.replace(/ORDER BY.*$/, '') // 移除 ORDER BY 子句
|
||||
.replace(/LIMIT.*$/, '') // 移除 LIMIT 和 OFFSET 子句
|
||||
const totalResult = db.prepare(countQuery).get(...params.slice(0, -2))
|
||||
const total = totalResult?.total || 0
|
||||
.replace("SELECT *", "SELECT COUNT(*) as total")
|
||||
.replace(/ORDER BY.*$/, "") // 移除 ORDER BY 子句
|
||||
.replace(/LIMIT.*$/, ""); // 移除 LIMIT 和 OFFSET 子句
|
||||
const totalResult = await db
|
||||
.prepare(countQuery)
|
||||
.get(...params.slice(0, -2));
|
||||
const total = totalResult?.total || 0;
|
||||
|
||||
// 获取分页数据
|
||||
const mediaList = db.prepare(query).all(...params)
|
||||
const mediaList = await db.prepare(query).all(...params);
|
||||
|
||||
return c.json({
|
||||
code: 0,
|
||||
@@ -145,13 +179,13 @@ media.get('/page', async (c) => {
|
||||
list: mediaList,
|
||||
total,
|
||||
currentPage,
|
||||
pageSize
|
||||
pageSize,
|
||||
},
|
||||
message: 'Success'
|
||||
})
|
||||
message: "Success",
|
||||
});
|
||||
} catch (error: any) {
|
||||
return c.json({ code: 1, data: {}, message: error.message }, 500)
|
||||
return c.json({ code: 1, data: {}, message: error.message }, 500);
|
||||
}
|
||||
})
|
||||
});
|
||||
|
||||
export default media
|
||||
export default media;
|
||||
|
||||
@@ -4,36 +4,40 @@
|
||||
* @LastEditTime: 2025-06-16 11:17:09
|
||||
* @FilePath: /my-score/honoback/routes/user.ts
|
||||
*/
|
||||
import { Hono } from 'hono'
|
||||
import { sign } from 'hono/jwt'
|
||||
import type { JwtVariables } from 'hono/jwt'
|
||||
import { db } from '../db/index.ts'
|
||||
import { Hono } from "hono";
|
||||
import { sign } from "hono/jwt";
|
||||
import type { JwtVariables } from "hono/jwt";
|
||||
import { db } from "../db/index.ts";
|
||||
|
||||
const user = new Hono<{ Variables: JwtVariables }>()
|
||||
const user = new Hono<{ Variables: JwtVariables }>();
|
||||
|
||||
const AUTH_SECRET = 'it-is-a-secret'
|
||||
const AUTH_SECRET = "it-is-a-secret";
|
||||
|
||||
// 登录路由
|
||||
user.post('/login', async (c) => {
|
||||
const { username, password } = await c.req.json()
|
||||
|
||||
user.post("/login", async (c) => {
|
||||
const { username, password } = await c.req.json();
|
||||
|
||||
// 从数据库验证用户
|
||||
const user = db.prepare('SELECT * FROM users WHERE username = ? AND password = ?')
|
||||
.get(username, password)
|
||||
|
||||
if (user) {
|
||||
const token = await sign({ username: user.username }, AUTH_SECRET)
|
||||
return c.json({
|
||||
const userRecord = await db
|
||||
.prepare("SELECT * FROM users WHERE username = ? AND password = ?")
|
||||
.get(username, password);
|
||||
|
||||
if (userRecord) {
|
||||
const token = await sign({ username: userRecord.username }, AUTH_SECRET);
|
||||
return c.json({
|
||||
code: 200,
|
||||
data: { token },
|
||||
message: '登录成功'
|
||||
})
|
||||
message: "登录成功",
|
||||
});
|
||||
}
|
||||
|
||||
return c.json({
|
||||
code: 401,
|
||||
message: '用户名或密码错误'
|
||||
}, 401)
|
||||
})
|
||||
|
||||
export default user
|
||||
return c.json(
|
||||
{
|
||||
code: 401,
|
||||
message: "用户名或密码错误",
|
||||
},
|
||||
401
|
||||
);
|
||||
});
|
||||
|
||||
export default user;
|
||||
|
||||
Reference in New Issue
Block a user