name: Deploy to Server

on:
  push:
    branches:
      - main
      - master

jobs:
  deploy:
    runs-on: ubuntu
    steps:
      # 直接使用 expect 脚本处理交互，比 sshpass 更稳定，尤其是在 Alpine 上
      
      - name: Install dependencies
        run: |
          if command -v apt-get &> /dev/null; then
            apt-get update
            apt-get install -y expect openssh-client
          elif command -v apk &> /dev/null; then
            apk update
            apk add expect openssh-client bash
          else
            echo "Unknown package manager"
            exit 1
          fi

      - name: Deploy to server
        env:
          HOST: "6.6.6.66"
          USER: "quant-speed"
          PASS: "123quant-speed"
          TARGET_DIR: "/home/quant-speed/data/dev/ESP32_GDEY042T81_server"
        run: |
          # 创建一个 shell 脚本，包含所有需要在服务器上执行的逻辑
          # 这样可以避免在 expect 中处理复杂的条件判断和转义
          cat > remote_script.sh <<'EOS'
          #!/bin/bash
          
          # 获取密码
          PASSWORD="$1"
          
          # 记录旧版本号
          OLD_HEAD=$(git rev-parse HEAD 2>/dev/null || echo "")
          
          # 尝试直接 git pull
          echo "Pulling latest code..."
          if ! git pull; then
              echo "Git pull permission denied, trying with sudo..."
              echo "$PASSWORD" | sudo -S git pull || { echo "Git pull failed"; exit 1; }
          fi
          
          NEW_HEAD=$(git rev-parse HEAD)
          
          if [ "$OLD_HEAD" == "$NEW_HEAD" ]; then
            echo "No changes detected, skipping deploy"
            exit 0
          fi
          
          # 检查构建文件变动
          if git diff --name-only $OLD_HEAD $NEW_HEAD | grep -E 'Dockerfile|requirements.txt'; then
            echo "Build files changed, rebuilding..."
            echo "$PASSWORD" | sudo -S docker compose down --rmi local
            echo "$PASSWORD" | sudo -S docker rmi epaper_server:latest || true
            echo "$PASSWORD" | sudo -S docker compose up -d --build
          else
            echo "Only code changed, restarting container..."
            echo "$PASSWORD" | sudo -S docker compose down
            echo "$PASSWORD" | sudo -S docker compose up -d
          fi
          EOS
          
          # 创建 expect 脚本，只负责上传脚本和执行脚本
          cat > deploy_script.exp <<EOF
          #!/usr/bin/expect -f
          
          set timeout 300
          set host "$HOST"
          set user "$USER"
          set password "$PASS"
          set target_dir "$TARGET_DIR"
          
          # 1. SSH 连接并创建目录
          spawn ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \$user@\$host "mkdir -p \$target_dir"
          expect {
              "yes/no" { send "yes\r"; exp_continue }
              "password:" { send "\$password\r" }
          }
          expect eof
          
          # 2. 上传脚本
          spawn scp -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null remote_script.sh \$user@\$host:\$target_dir/deploy.sh
          expect {
              "password:" { send "\$password\r" }
          }
          expect eof
          
          # 3. 执行脚本
          spawn ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -t \$user@\$host "cd \$target_dir && chmod +x deploy.sh && bash deploy.sh '\$password'"
          expect {
              "password:" { send "\$password\r" }
          }
          
          # 保持交互直到脚本执行完毕
          expect eof
          EOF
          
          # 执行 expect 脚本
          chmod +x deploy_script.exp
          ./deploy_script.exp