#!/bin/bash
# 日记系统 - 云服务器部署脚本
# 在云服务器上执行：bash deploy_cloud.sh

set -e

PROJECT_DIR="/home/ubuntu/diary-system"
BACKEND_DIR="$PROJECT_DIR/backend"
FRONTEND_DIR="$PROJECT_DIR/frontend"

echo "======================================"
echo "⚡ 码神日记系统 - 云服务器部署"
echo "======================================"
echo ""

cd "$PROJECT_DIR"

# 1. 安装依赖
echo "📦 安装 Python 依赖..."
cd "$BACKEND_DIR"
pip3 install -r requirements.txt -q 2>/dev/null || pip3 install -r requirements.txt --break-system-packages -q

# 2. 数据库迁移
echo "🗄️  执行数据库迁移..."
python3 manage.py makemigrations diary --noinput 2>/dev/null || true
python3 manage.py migrate --noinput

# 3. 收集静态文件
echo "📁 收集静态文件..."
mkdir -p "$BACKEND_DIR/static"
python3 manage.py collectstatic --noinput

# 4. 创建 Gunicorn systemd 服务
echo "⚙️  创建 Gunicorn 服务..."
sudo cat > /etc/systemd/system/diary-system.service << EOF
[Unit]
Description=Diary System Gunicorn Service
After=network.target

[Service]
User=ubuntu
Group=ubuntu
WorkingDirectory=$BACKEND_DIR
ExecStart=/usr/bin/gunicorn --access-logfile - --workers 3 --bind 127.0.0.1:8002 diary_system.wsgi:application
Restart=always

[Install]
WantedBy=multi-user.target
EOF

sudo systemctl daemon-reload
sudo systemctl enable diary-system
sudo systemctl restart diary-system

# 5. 配置 Nginx
echo "🌐 配置 Nginx..."
sudo cat > /etc/nginx/sites-available/diary-system << EOF
server {
    listen 8001;
    server_name _;

    location = /favicon.ico { access_log off; log_not_found off; }
    
    location /static/ {
        alias $BACKEND_DIR/static/;
    }

    location /api/ {
        proxy_pass http://127.0.0.1:8002;
        proxy_set_header Host \$host;
        proxy_set_header X-Real-IP \$remote_addr;
        proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
    }

    location / {
        root $FRONTEND_DIR;
        index index.html;
        try_files \$uri \$uri/ /index.html;
    }
}
EOF

sudo ln -sf /etc/nginx/sites-available/diary-system /etc/nginx/sites-enabled/
sudo nginx -t
sudo systemctl restart nginx

# 6. 同步日记数据
echo "📊 同步日记数据..."
cd "$PROJECT_DIR"
python3 sync_diary.py || echo "   (首次部署，跳过日记同步)"

# 7. 检查服务状态
echo ""
echo "🔍 检查服务状态..."
sudo systemctl is-active diary-system > /dev/null && echo "   ✅ Gunicorn 运行中" || echo "   ❌ Gunicorn 未运行"
sudo systemctl is-active nginx > /dev/null && echo "   ✅ Nginx 运行中" || echo "   ❌ Nginx 未运行"

# 8. 测试访问
echo ""
echo "🧪 测试访问..."
sleep 2
if curl -s http://127.0.0.1:8001/ | grep -q "码神的日记系统"; then
    echo "   ✅ 前端访问正常"
else
    echo "   ⚠️  前端访问可能有问题"
fi

if curl -s http://127.0.0.1:8001/api/entries/stats/ | grep -q "total_entries"; then
    echo "   ✅ API 访问正常"
else
    echo "   ⚠️  API 访问可能有问题"
fi

echo ""
echo "======================================"
echo "✅ 部署完成！"
echo "======================================"
echo ""
echo "📍 访问地址：http://cssc.datalibstar.com:8001"
echo "📍 API:       http://cssc.datalibstar.com:8001/api/"
echo "📍 Admin:     http://cssc.datalibstar.com:8001/admin"
echo ""
echo "🎉 日记系统已在云服务器上线！"
echo ""