#!/bin/bash
# ============================================
# Forge Admin 一键部署脚本（空服务器专用）
# 适用系统: CentOS 7/8 / Anolis OS / RHEL
# 使用方法: 复制全部内容粘贴到服务器终端执行
# ============================================

set -e

echo "=========================================="
echo "  Forge Admin 一键部署 - 开始"
echo "=========================================="

# ========================
# 1. 创建 2G Swap 防 OOM
# ========================
echo "[1/6] 创建 Swap 分区..."
if [ ! -f /swapfile ]; then
    sudo fallocate -l 2G /swapfile
    sudo chmod 600 /swapfile
    sudo mkswap /swapfile
    sudo swapon /swapfile
    echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab
    echo "  ✓ Swap 创建成功"
else
    echo "  ✓ Swap 已存在，跳过"
fi
free -h | grep Swap

# ========================
# 2. 安装 Docker
# ========================
echo "[2/6] 安装 Docker..."
if command -v docker &> /dev/null; then
    echo "  ✓ Docker 已安装: $(docker --version)"
else
    sudo yum install -y yum-utils
    sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
    sudo yum install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin
    sudo systemctl start docker
    sudo systemctl enable docker
    echo "  ✓ Docker 安装完成: $(docker --version)"
fi

# ========================
# 3. 安装 Git
# ========================
echo "[3/6] 安装 Git..."
if command -v git &> /dev/null; then
    echo "  ✓ Git 已安装: $(git --version)"
else
    sudo yum install -y git
    echo "  ✓ Git 安装完成"
fi

# ========================
# 4. 克隆代码到 /mnt/project
# ========================
echo "[4/6] 克隆项目代码到 /mnt/project..."
sudo mkdir -p /mnt/project
cd /mnt/project

if [ -d "forge_admin" ]; then
    echo "  ✓ 项目目录已存在，检查是否为 git 仓库..."
    cd forge_admin
    if [ -d ".git" ]; then
        echo "  ✓ 是 git 仓库，执行 git pull 更新..."
        git pull
    else
        echo "  ✗ 不是 git 仓库，删除后重新克隆..."
        cd /mnt/project
        rm -rf forge_admin
        git clone http://3081089em4.wicp.vip/user5/forge_admin.git
        cd forge_admin
        echo "  ✓ 代码克隆完成"
    fi
else
    git clone http://3081089em4.wicp.vip/user5/forge_admin.git
    cd forge_admin
    echo "  ✓ 代码克隆完成"
fi

# ========================
# 5. 配置环境变量
# ========================
echo "[5/6] 配置环境变量..."
cd /mnt/project/forge_admin/docker
if [ ! -f .env ]; then
    cp .env.example .env
    echo "  ✓ .env 已创建（使用默认配置）"
else
    echo "  ✓ .env 已存在，跳过"
fi

# ========================
# 6. 构建并启动
# ========================
echo "[6/6] 构建并启动服务（首次构建约 15-20 分钟，请耐心等待）..."
docker compose up -d --build

echo ""
echo "=========================================="
echo "  部署完成！"
echo "=========================================="
echo ""
echo "查看服务状态:  docker compose ps"
echo "查看启动日志:  docker compose logs -f"
echo ""
echo "访问地址: http://$(curl -s ifconfig.me)/forge"
echo "账号: admin"
echo "密码: 123456"
echo ""
echo "⚠️  确保阿里云安全组已放行 80 端口"
echo "=========================================="