#!/bin/bash

# 简化的MySQL安装脚本
# 作者: emotion-museum
# 日期: 2025-07-21

REMOTE_HOST="root@47.111.10.27"

echo "🚀 开始MySQL安装..."

# 创建远程安装脚本
cat > /tmp/mysql_install_remote.sh << 'EOF'
#!/bin/bash
set -e

echo "📦 MySQL安装开始..."

# 1. 清理环境
echo "🧹 清理环境..."
pkill -f mysqld 2>/dev/null || true
rm -rf /usr/local/mysql /tmp/mysql-* /etc/my.cnf /var/log/mysqld.log 2>/dev/null || true

# 2. 解压MySQL包
echo "📦 解压MySQL包..."
cd /tmp
tar -xJf /data/package/mysql-8.0.24-linux-glibc2.12-x86_64.tar.xz

if [ -d 'mysql-8.0.24-linux-glibc2.12-x86_64' ]; then
    echo "✅ 解压成功"
    mv mysql-8.0.24-linux-glibc2.12-x86_64 /usr/local/mysql
else
    echo "❌ 解压失败"
    exit 1
fi

# 3. 创建用户
echo "👤 创建mysql用户..."
groupadd mysql 2>/dev/null || true
useradd -r -g mysql -s /bin/false mysql 2>/dev/null || true

# 4. 设置权限
echo "📁 设置权限..."
chown -R root:root /usr/local/mysql
chown -R mysql:mysql /data/programs/mysql
chmod -R 750 /data/programs/mysql

# 5. 创建配置文件
echo "⚙️ 创建配置文件..."
cat > /etc/my.cnf << 'EOCNF'
[mysqld]
user = mysql
port = 3306
basedir = /usr/local/mysql
datadir = /data/programs/mysql
socket = /tmp/mysql.sock
pid-file = /var/run/mysqld/mysqld.pid

bind-address = 0.0.0.0
max_connections = 200

character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci
default-authentication-plugin = mysql_native_password

log-error = /var/log/mysqld.log
slow_query_log = 1
slow_query_log_file = /var/log/mysql-slow.log
long_query_time = 2

innodb_buffer_pool_size = 512M
innodb_log_file_size = 128M

log-bin = mysql-bin
binlog_format = ROW
expire_logs_days = 7

skip-name-resolve
sql_mode = STRICT_TRANS_TABLES,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO

[mysql]
default-character-set = utf8mb4
socket = /tmp/mysql.sock

[client]
default-character-set = utf8mb4
socket = /tmp/mysql.sock
EOCNF

# 6. 创建必要目录
echo "📁 创建必要目录..."
mkdir -p /var/run/mysqld /var/log
chown mysql:mysql /var/run/mysqld
touch /var/log/mysqld.log
chown mysql:mysql /var/log/mysqld.log

# 7. 创建符号链接
echo "🔗 创建符号链接..."
ln -sf /usr/local/mysql/bin/mysql /usr/local/bin/mysql
ln -sf /usr/local/mysql/bin/mysqld /usr/local/bin/mysqld
ln -sf /usr/local/mysql/bin/mysqladmin /usr/local/bin/mysqladmin
ln -sf /usr/local/mysql/bin/mysqldump /usr/local/bin/mysqldump

# 8. 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 20

# 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"
fi

# 9. 设置密码
echo "🔐 设置密码..."
sleep 10

# 尝试无密码连接
if /usr/local/mysql/bin/mysql -u root -e 'SELECT VERSION();' > /dev/null 2>&1; then
    echo "✅ 无密码连接成功，设置密码..."
    /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!';
GRANT ALL PRIVILEGES ON emotion_museum.* TO 'emotion'@'localhost';
GRANT ALL PRIVILEGES ON emotion_museum.* TO 'emotion'@'%';
FLUSH PRIVILEGES;
EOSQL
    echo "✅ 密码设置完成"
else
    echo "⚠️ 无密码连接失败，检查临时密码..."
    TEMP_PASSWORD=$(grep 'temporary password' /var/log/mysqld.log | tail -1 | awk '{print $NF}' 2>/dev/null || echo '')
    if [ -n "$TEMP_PASSWORD" ]; then
        echo "发现临时密码，重置..."
        /usr/local/mysql/bin/mysql -u root -p"$TEMP_PASSWORD" --connect-expired-password << 'EOSQL'
ALTER USER 'root'@'localhost' IDENTIFIED BY 'EmotionMuseum2025*#';
FLUSH PRIVILEGES;
EOSQL
        echo "✅ 密码重置完成"
    fi
fi

# 10. 验证安装
echo "🔍 验证安装..."
if /usr/local/mysql/bin/mysql -u root -p'EmotionMuseum2025*#' -e 'SHOW DATABASES;' > /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;'
    
    # 检查emotion_museum数据库
    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"
        /usr/local/mysql/bin/mysql -u root -p'EmotionMuseum2025*#' -e 'USE emotion_museum; SHOW TABLES;'
    else
        echo "⚠️ emotion_museum数据库不存在"
    fi
else
    echo "❌ MySQL连接验证失败"
    exit 1
fi

echo "🎉 MySQL安装完成！"
echo "连接信息："
echo "  主机: localhost"
echo "  端口: 3306"
echo "  root密码: EmotionMuseum2025*#"
echo "  emotion密码: EmotionDB2024!"
EOF

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

echo "🚀 在服务器上执行安装..."
ssh $REMOTE_HOST "chmod +x /tmp/mysql_install_remote.sh && /tmp/mysql_install_remote.sh"

echo "✅ MySQL安装脚本执行完成！"