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101 lines
3.5 KiB
101 lines
3.5 KiB
-- SimpleChat 数据库初始化脚本
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-- 创建数据库: chat.db
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-- 用户表
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CREATE TABLE IF NOT EXISTS users (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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username VARCHAR(50) UNIQUE NOT NULL,
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password VARCHAR(100) NOT NULL,
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nickname VARCHAR(50),
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avatar VARCHAR(200) DEFAULT 'default.png',
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
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);
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-- 好友关系表
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CREATE TABLE IF NOT EXISTS friendships (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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user_id INTEGER NOT NULL,
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friend_id INTEGER NOT NULL,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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FOREIGN KEY (user_id) REFERENCES users(id),
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FOREIGN KEY (friend_id) REFERENCES users(id),
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UNIQUE(user_id, friend_id)
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);
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-- 消息表
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CREATE TABLE IF NOT EXISTS messages (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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sender_id INTEGER NOT NULL,
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receiver_id INTEGER,
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group_id INTEGER,
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content TEXT NOT NULL,
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msg_type VARCHAR(20) DEFAULT 'text',
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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FOREIGN KEY (sender_id) REFERENCES users(id)
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);
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-- 群组表
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CREATE TABLE IF NOT EXISTS groups (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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name VARCHAR(100) NOT NULL,
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creator_id INTEGER NOT NULL,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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FOREIGN KEY (creator_id) REFERENCES users(id)
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);
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-- 群组成员表
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CREATE TABLE IF NOT EXISTS group_members (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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group_id INTEGER NOT NULL,
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user_id INTEGER NOT NULL,
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join_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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FOREIGN KEY (group_id) REFERENCES groups(id),
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FOREIGN KEY (user_id) REFERENCES users(id),
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UNIQUE(group_id, user_id)
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);
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-- 创建默认管理员账户 (密码: 123456)
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INSERT OR IGNORE INTO users (username, password, nickname)
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VALUES ('admin', 'e10adc3949ba59abbe56e057f20f883e', '系统管理员');
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-- 创建测试用户
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INSERT OR IGNORE INTO users (username, password, nickname)
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VALUES
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('user1', 'e10adc3949ba59abbe56e057f20f883e', '用户一'),
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('user2', 'e10adc3949ba59abbe56e057f20f883e', '用户二'),
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('user3', 'e10adc3949ba59abbe56e057f20f883e', '用户三');
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-- 创建测试好友关系
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INSERT OR IGNORE INTO friendships (user_id, friend_id)
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SELECT u1.id, u2.id
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FROM users u1, users u2
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WHERE u1.username = 'admin' AND u2.username = 'user1'
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OR u1.username = 'admin' AND u2.username = 'user2'
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OR u1.username = 'user1' AND u2.username = 'user2';
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-- 创建测试群组
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INSERT OR IGNORE INTO groups (name, creator_id)
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SELECT '测试群组', id FROM users WHERE username = 'admin';
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-- 添加群组成员
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INSERT OR IGNORE INTO group_members (group_id, user_id)
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SELECT g.id, u.id
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FROM groups g, users u
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WHERE g.name = '测试群组'
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AND u.username IN ('admin', 'user1', 'user2', 'user3');
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-- 创建测试消息
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INSERT OR IGNORE INTO messages (sender_id, receiver_id, content)
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SELECT u1.id, u2.id, '你好，这是测试消息！'
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FROM users u1, users u2
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WHERE u1.username = 'admin' AND u2.username = 'user1';
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-- 创建索引以提高查询性能
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CREATE INDEX IF NOT EXISTS idx_messages_sender ON messages(sender_id);
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CREATE INDEX IF NOT EXISTS idx_messages_receiver ON messages(receiver_id);
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CREATE INDEX IF NOT EXISTS idx_messages_group ON messages(group_id);
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CREATE INDEX IF NOT EXISTS idx_friendships_user ON friendships(user_id);
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CREATE INDEX IF NOT EXISTS idx_friendships_friend ON friendships(friend_id);
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CREATE INDEX IF NOT EXISTS idx_group_members_group ON group_members(group_id);
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CREATE INDEX IF NOT EXISTS idx_group_members_user ON group_members(user_id); |