pipeline {
  agent any

  environment {
    ACR_REGISTRY   = 'crpi-n44qjpuucgjt8e8c.cn-beijing.personal.cr.aliyuncs.com'
    ACR_NAMESPACE  = 'xuqmgroup'
    ACR_USERNAME   = 'xuqinmin12'
    PROD_HOST      = '106.54.23.149'
    PROD_USER      = 'ubuntu'
    COMPOSE_FILE   = '/opt/xuqm/deploy/compose.production.yaml'
    VERSIONS_FILE  = '/opt/xuqm/deploy/versions.json'
    DOCKER_BUILDKIT = '1'
    IMAGE_NAME     = 'tenant-web'
    DOCKERFILE     = 'Dockerfile.tenant'
    DEPLOY_SERVICE = 'tenant-web'
    BUILD_ARGS     = '--build-arg TENANT_APP_BASE=/ --build-arg TENANT_API_BASE_URL=/api'
    VERSION_FILE   = 'VERSION.tenant-web'
  }

  options {
    timeout(time: 20, unit: 'MINUTES')
    buildDiscarder(logRotator(numToKeepStr: '20'))
    disableConcurrentBuilds()
  }

  stages {
    stage('Checkout') {
      steps {
        checkout([
          $class: 'GitSCM',
          branches: [[name: 'main']],
          extensions: [[$class: 'CleanBeforeCheckout']],
          userRemoteConfigs: scm.userRemoteConfigs
        ])
      }
    }

    stage('Resolve Version') {
      steps {
        script {
          def current = fileExists(env.VERSION_FILE) ? readFile(env.VERSION_FILE).trim() : '1.0.0'
          def parts = current.tokenize('.')
          while (parts.size() < 3) parts.add('0')
          def newVer = "${parts[0]}.${parts[1]}.${parts[2].toInteger() + 1}"
          env.IMAGE_VERSION = newVer
          writeFile file: env.VERSION_FILE, text: newVer
          echo "${env.IMAGE_NAME}: ${current} → ${newVer}"
        }
      }
    }

    stage('Docker Build & Push') {
      steps {
        withCredentials([string(credentialsId: 'ACR_PASSWORD', variable: 'ACR_PASS')]) {
          script {
            def base = "${env.ACR_REGISTRY}/${env.ACR_NAMESPACE}/${env.IMAGE_NAME}"
            def versionedImage = "${base}:${env.IMAGE_VERSION}"
            def latestImage = "${base}:latest"
            def gitCommit = env.GIT_COMMIT ?: 'unknown'
            bat """
              docker login ${env.ACR_REGISTRY} -u ${env.ACR_USERNAME} -p %ACR_PASS%
              if %errorlevel% neq 0 exit /b 1
              docker pull --platform=linux/amd64 ${latestImage} || echo Pull failed, will build fresh
              docker build --platform=linux/amd64 -f ${env.DOCKERFILE} ${env.BUILD_ARGS} --build-arg GIT_COMMIT=${gitCommit} --build-arg BUILDKIT_INLINE_CACHE=1 --cache-from ${latestImage} -t ${versionedImage} -t ${latestImage} .
              if %errorlevel% neq 0 exit /b 1
              docker push ${versionedImage}
              if %errorlevel% neq 0 exit /b 1
              docker push ${latestImage}
              if %errorlevel% neq 0 exit /b 1
              docker rmi ${versionedImage} ${latestImage}
              exit /b 0
            """
          }
        }
      }
    }

    stage('Deploy to Production') {
      steps {
        lock('prod-deploy') {
          withCredentials([sshUserPrivateKey(credentialsId: 'PROD_SSH_KEY', keyFileVariable: 'SSH_KEY')]) {
            script {
              def latestImage = "${env.ACR_REGISTRY}/${env.ACR_NAMESPACE}/${env.IMAGE_NAME}:latest"
              retry(2) {
                bat """
                  ssh -i "%SSH_KEY%" -o StrictHostKeyChecking=no ${env.PROD_USER}@${env.PROD_HOST} "docker image prune -f 2>/dev/null || true; docker pull ${latestImage} || exit 1; docker compose -f ${env.COMPOSE_FILE} up -d --no-deps --force-recreate ${env.DEPLOY_SERVICE} || exit 1; docker image prune -f"
                """
              }
              def releasedAt = new Date().format("yyyy-MM-dd'T'HH:mm:ss'Z'", TimeZone.getTimeZone('UTC'))
              def updateScript = """\
import json, os
path = '${env.VERSIONS_FILE}'
d = json.load(open(path)) if os.path.exists(path) else {}
d.setdefault('services', {})['${env.DEPLOY_SERVICE}'] = {'version': '${env.IMAGE_VERSION}', 'changed': True}
d['releasedAt'] = '${releasedAt}'
json.dump(d, open(path, 'w'), indent=2, ensure_ascii=False)
print('versions.json updated: ${env.DEPLOY_SERVICE} = ${env.IMAGE_VERSION}')
""".stripIndent()
              writeFile file: 'update_versions.py', text: updateScript
              bat """
                scp -i "%SSH_KEY%" -o StrictHostKeyChecking=no update_versions.py ${env.PROD_USER}@${env.PROD_HOST}:/tmp/update_versions.py
                ssh -i "%SSH_KEY%" -o StrictHostKeyChecking=no ${env.PROD_USER}@${env.PROD_HOST} "python3 /tmp/update_versions.py && rm /tmp/update_versions.py"
              """
            }
          }
        }
      }
    }

    stage('Commit Version') {
      steps {
        script {
          bat """
            git config user.email "jenkins@xuqm.com"
            git config user.name "Jenkins CI"
            git add ${env.VERSION_FILE}
            git diff --cached --quiet || git commit -m "ci: bump ${env.IMAGE_NAME} to ${env.IMAGE_VERSION} [skip ci]"
            git push origin HEAD:main
          """
        }
      }
    }
  }

  post {
    success { echo "✅ ${env.IMAGE_NAME}:${env.IMAGE_VERSION} 构建部署成功" }
    failure  { echo "❌ 构建失败，请检查日志" }
  }
}