#!/bin/bash

# MySQL完整安装和数据恢复脚本
# 作者: emotion-museum
# 日期: 2025-07-21

REMOTE_HOST="root@47.111.10.27"

echo "🚀 开始MySQL完整安装和数据恢复..."

# 创建远程执行脚本
cat > /tmp/complete_mysql_setup.sh << 'EOF'
#!/bin/bash
set -e

echo "📦 MySQL完整安装开始..."

# 1. 停止所有MySQL进程
echo "🛑 停止MySQL进程..."
pkill -f mysqld 2>/dev/null || true
sleep 5

# 2. 完全清空数据目录
echo "🧹 清空数据目录..."
rm -rf /data/programs/mysql/*
rm -rf /data/programs/mysql/.* 2>/dev/null || true

# 3. 重新初始化MySQL
echo "🔧 初始化MySQL..."
/usr/local/mysql/bin/mysqld --initialize-insecure --user=mysql --basedir=/usr/local/mysql --datadir=/data/programs/mysql

if [ $? -eq 0 ]; then
    echo "✅ MySQL初始化成功"
else
    echo "❌ MySQL初始化失败"
    exit 1
fi

# 4. 启动MySQL
echo "🚀 启动MySQL..."
nohup /usr/local/mysql/bin/mysqld --defaults-file=/etc/my.cnf --user=mysql > /var/log/mysqld.log 2>&1 &

# 等待启动
echo "⏳ 等待MySQL启动..."
sleep 25

# 检查进程
if pgrep -f mysqld > /dev/null; then
    echo "✅ MySQL进程启动成功"
else
    echo "❌ MySQL进程启动失败"
    tail -20 /var/log/mysqld.log
    exit 1
fi

# 检查端口
if netstat -tlnp | grep :3306 > /dev/null; then
    echo "✅ MySQL端口3306正在监听"
else
    echo "⚠️ MySQL端口3306未监听，继续等待..."
    sleep 10
fi

# 5. 设置密码和权限
echo "🔐 设置密码和权限..."
sleep 5

/usr/local/mysql/bin/mysql -u root << 'EOSQL'
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'EmotionMuseum2025*#';
CREATE USER IF NOT EXISTS 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'EmotionMuseum2025*#';
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION;
CREATE USER IF NOT EXISTS 'emotion'@'localhost' IDENTIFIED WITH mysql_native_password BY 'EmotionDB2024!';
CREATE USER IF NOT EXISTS 'emotion'@'%' IDENTIFIED WITH mysql_native_password BY 'EmotionDB2024!';
CREATE DATABASE IF NOT EXISTS emotion_museum CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
GRANT ALL PRIVILEGES ON emotion_museum.* TO 'emotion'@'localhost';
GRANT ALL PRIVILEGES ON emotion_museum.* TO 'emotion'@'%';
FLUSH PRIVILEGES;
EOSQL

echo "✅ 密码和权限设置完成"

# 6. 验证连接
echo "🔍 验证MySQL连接..."
if /usr/local/mysql/bin/mysql -u root -p'EmotionMuseum2025*#' -e 'SELECT VERSION();' > /dev/null 2>&1; then
    echo "✅ MySQL连接验证成功"
    /usr/local/mysql/bin/mysql -u root -p'EmotionMuseum2025*#' -e 'SHOW DATABASES;'
else
    echo "❌ MySQL连接验证失败"
    exit 1
fi

# 7. 恢复数据
echo "📤 恢复数据..."
LATEST_SQL_BACKUP=$(ls -t /data/backups/mysql_*/all_databases.sql 2>/dev/null | head -1)

if [ -n "$LATEST_SQL_BACKUP" ] && [ -f "$LATEST_SQL_BACKUP" ]; then
    echo "发现SQL备份文件: $LATEST_SQL_BACKUP"
    echo "正在恢复数据库..."
    /usr/local/mysql/bin/mysql -u root -p'EmotionMuseum2025*#' < "$LATEST_SQL_BACKUP"
    echo "✅ 数据恢复完成"
    
    # 验证数据
    echo "🔍 验证数据..."
    if /usr/local/mysql/bin/mysql -u root -p'EmotionMuseum2025*#' -e 'USE emotion_museum; SHOW TABLES;' > /dev/null 2>&1; then
        echo "✅ emotion_museum数据库存在"
        TABLE_COUNT=$(/usr/local/mysql/bin/mysql -u root -p'EmotionMuseum2025*#' -e 'USE emotion_museum; SHOW TABLES;' | wc -l)
        echo "数据库表数量: $((TABLE_COUNT - 1))"
        
        # 检查用户表
        if /usr/local/mysql/bin/mysql -u root -p'EmotionMuseum2025*#' -e 'USE emotion_museum; SELECT COUNT(*) FROM user;' > /dev/null 2>&1; then
            USER_COUNT=$(/usr/local/mysql/bin/mysql -u root -p'EmotionMuseum2025*#' -e 'USE emotion_museum; SELECT COUNT(*) FROM user;' | tail -1)
            echo "用户数量: $USER_COUNT"
        fi
    else
        echo "⚠️ emotion_museum数据库验证失败"
    fi
else
    echo "⚠️ 没有找到SQL备份文件"
fi

# 8. 最终状态检查
echo "📊 最终状态检查..."
echo "=================="

# 检查进程
echo -n "MySQL进程: "
if pgrep -f mysqld > /dev/null; then
    echo "✅ 运行中"
else
    echo "❌ 未运行"
fi

# 检查端口
echo -n "MySQL端口(3306): "
if netstat -tlnp | grep :3306 > /dev/null; then
    echo "✅ 监听中"
else
    echo "❌ 未监听"
fi

# 检查连接
echo -n "MySQL连接: "
if /usr/local/mysql/bin/mysql -u root -p'EmotionMuseum2025*#' -e 'SELECT 1;' > /dev/null 2>&1; then
    echo "✅ 正常"
else
    echo "❌ 失败"
fi

# 检查emotion用户连接
echo -n "emotion用户连接: "
if /usr/local/mysql/bin/mysql -u emotion -p'EmotionDB2024!' -e 'USE emotion_museum; SELECT 1;' > /dev/null 2>&1; then
    echo "✅ 正常"
else
    echo "❌ 失败"
fi

echo ""
echo "🎉 MySQL安装和数据恢复完成！"
echo ""
echo "📋 连接信息："
echo "  主机: localhost 或 47.111.10.27"
echo "  端口: 3306"
echo "  root密码: EmotionMuseum2025*#"
echo "  emotion密码: EmotionDB2024!"
echo "  数据库: emotion_museum"
echo ""
echo "🔧 下一步："
echo "  1. 重启微服务测试数据库连接"
echo "  2. 验证应用功能正常"
EOF

# 上传并执行脚本
echo "📤 上传完整安装脚本到服务器..."
scp /tmp/complete_mysql_setup.sh $REMOTE_HOST:/tmp/

echo "🚀 在服务器上执行完整安装..."
ssh $REMOTE_HOST "chmod +x /tmp/complete_mysql_setup.sh && /tmp/complete_mysql_setup.sh"

echo ""
echo "✅ MySQL完整安装脚本执行完成！"
echo ""
echo "📋 如果安装成功，你现在可以："
echo "  1. 测试MySQL连接: mysql -u root -p'EmotionMuseum2025*#' -h 47.111.10.27"
echo "  2. 重启微服务: cd backend && ./deploy-remote.sh"
echo "  3. 测试前端访问: http://47.111.10.27/emotion/happy/"