pipeline {
  agent none

  options {
    disableConcurrentBuilds()
    skipDefaultCheckout(true)
    buildDiscarder(logRotator(numToKeepStr: '20', artifactNumToKeepStr: '20'))
  }

  environment {
    GIT_REMOTE_URL = 'http://127.0.0.1:3000/GenarrativeAI/Genarrative.git'
    GIT_REMOTE_FALLBACK_URL = 'https://git.genarrative.world/GenarrativeAI/Genarrative.git'
  }

  parameters {
    choice(name: 'DEPLOY_TARGET', choices: ['development', 'release'], description: '逻辑部署目标；development 使用当前 Linux 开发/构建/开发部署 agent')
    booleanParam(name: 'CONFIRM_RELEASE_DEPLOY_AGENT', defaultValue: false, description: '确认 release 目标已有独立 release 部署 agent；当前 Linux 开发/构建/开发部署 agent 不可冒充 release 部署机')
    string(name: 'SOURCE_BRANCH', defaultValue: 'master', description: '部署脚本来源分支')
    string(name: 'COMMIT_HASH', defaultValue: '', description: '部署脚本来源 commit；上游触发时传实际构建 commit')
    string(name: 'NOTIFICATION_EMAILS', defaultValue: '', description: '本次运行追加通知邮箱；会与 Jenkins Secret Text 凭据 genarrative-notification-emails 合并发送')
    string(name: 'BUILD_VERSION', defaultValue: '', description: '待发布版本号')
    string(name: 'BUILD_JOB_NAME', defaultValue: 'Genarrative-Api-Build', description: 'API 构建流水线作业名')
    string(name: 'BUILD_NUMBER_TO_DEPLOY', defaultValue: '', description: '要复制归档产物的上游构建号')
    string(name: 'RELEASE_ROOT', defaultValue: '/opt/genarrative/releases', description: '生产 release 根目录')
    string(name: 'CURRENT_LINK', defaultValue: '/opt/genarrative/current', description: '当前版本软链接')
    string(name: 'SERVICE_NAME', defaultValue: 'genarrative-api.service', description: 'systemd 服务名')
    string(name: 'HEALTH_URL', defaultValue: 'http://127.0.0.1:8082/healthz', description: '本机健康检查地址')
    string(name: 'API_ENV_FILE', defaultValue: '/etc/genarrative/api-server.env', description: 'api-server 环境文件')
    string(name: 'DATABASE', defaultValue: 'genarrative-prod', description: 'api-server 连接的 SpacetimeDB database')
    string(name: 'SPACETIME_SERVER_URL', defaultValue: 'http://127.0.0.1:3101', description: 'api-server 连接的 SpacetimeDB server URL')
  }

  stages {
    stage('Prepare') {
      agent {
        label 'linux && genarrative-build'
      }
      steps {
        script {
          if (params.DEPLOY_TARGET == 'release' && !params.CONFIRM_RELEASE_DEPLOY_AGENT) {
            error('release 部署需要先配置独立 release 部署 agent，并勾选 CONFIRM_RELEASE_DEPLOY_AGENT。当前 Linux 开发/构建/开发部署 agent 不能执行 release 部署。')
          }
          if (!params.BUILD_VERSION?.trim()) {
            error('BUILD_VERSION 不能为空。')
          }
          if (!params.BUILD_JOB_NAME?.trim()) {
            error('BUILD_JOB_NAME 不能为空。')
          }
          if (!params.BUILD_NUMBER_TO_DEPLOY?.trim()) {
            error('BUILD_NUMBER_TO_DEPLOY 不能为空。')
          }
          if (!params.DATABASE?.trim()) {
            error('DATABASE 不能为空。')
          }
          if (!(params.DATABASE.trim() ==~ /^[a-z0-9]+(-[a-z0-9]+)*$/)) {
            error("DATABASE 必须匹配 ^[a-z0-9]+(-[a-z0-9]+)*\$: ${params.DATABASE}")
          }
          if (!params.API_ENV_FILE?.trim()) {
            error('API_ENV_FILE 不能为空。')
          }
        }
      }
    }

    stage('Checkout Deploy Scripts') {
      agent {
        label "${params.DEPLOY_TARGET == 'development' ? 'linux && genarrative-build' : 'linux && genarrative-release-deploy'}"
      }
      steps {
        script {
          def checkoutFromRemote = { String remoteUrl ->
            checkout([
              $class: 'GitSCM',
              branches: [[name: "*/${params.SOURCE_BRANCH}"]],
              doGenerateSubmoduleConfigurations: false,
              extensions: [
                [$class: 'CleanBeforeCheckout'],
                [$class: 'CloneOption', shallow: true, depth: 1, noTags: true, timeout: 30, honorRefspec: true],
              ],
              userRemoteConfigs: [[url: remoteUrl, refspec: "+refs/heads/${params.SOURCE_BRANCH}:refs/remotes/origin/${params.SOURCE_BRANCH}"]],
            ])
          }
          try {
            checkoutFromRemote(env.GIT_REMOTE_URL)
            env.EFFECTIVE_GIT_REMOTE_URL = env.GIT_REMOTE_URL
          } catch (error) {
            echo "Git 主地址拉取失败: ${env.GIT_REMOTE_URL}，改用备用地址: ${env.GIT_REMOTE_FALLBACK_URL}"
            checkoutFromRemote(env.GIT_REMOTE_FALLBACK_URL)
            env.EFFECTIVE_GIT_REMOTE_URL = env.GIT_REMOTE_FALLBACK_URL
          }
        }
        script {
          if (params.COMMIT_HASH?.trim()) {
            echo "API 发布脚本 checkout 将忽略上游构建 commit=${params.COMMIT_HASH}，改用 ${params.SOURCE_BRANCH ?: 'master'} 最新提交，避免发布阶段回退到旧部署脚本。构建产物仍由 BUILD_NUMBER_TO_DEPLOY 决定。"
          }
        }
        sh '''
          bash -lc '
            set -euo pipefail
            chmod +x scripts/jenkins-checkout-source.sh
            SOURCE_BRANCH="${SOURCE_BRANCH:-master}" \
            COMMIT_HASH="" \
            GIT_REMOTE_URL="${EFFECTIVE_GIT_REMOTE_URL:-${GIT_REMOTE_URL}}" \
            GIT_REMOTE_FALLBACK_URL="${GIT_REMOTE_FALLBACK_URL:-}" \
            SOURCE_COMMIT_FILE=".jenkins-source-commit" \
            scripts/jenkins-checkout-source.sh
          '
        '''
      }
    }

    stage('Fetch Artifact') {
      agent {
        label "${params.DEPLOY_TARGET == 'development' ? 'linux && genarrative-build' : 'linux && genarrative-release-deploy'}"
      }
      steps {
        copyArtifacts(
          projectName: params.BUILD_JOB_NAME,
          selector: specific(params.BUILD_NUMBER_TO_DEPLOY),
          filter: "build/${params.BUILD_VERSION}/api-server,build/${params.BUILD_VERSION}/api-server.sha256,build/${params.BUILD_VERSION}/release-manifest.json",
          target: '.',
          fingerprintArtifacts: true
        )
      }
    }

    stage('Deploy Api') {
      agent {
        label "${params.DEPLOY_TARGET == 'development' ? 'linux && genarrative-build' : 'linux && genarrative-release-deploy'}"
      }
      steps {
        sh '''
          bash -lc '
            set -euo pipefail
            chmod +x scripts/deploy/production-api-deploy.sh scripts/deploy/maintenance-on.sh scripts/deploy/maintenance-off.sh
            scripts/deploy/production-api-deploy.sh \
              --source-dir "build/${BUILD_VERSION}" \
              --version "${BUILD_VERSION}" \
              --release-root "${RELEASE_ROOT}" \
              --current-link "${CURRENT_LINK}" \
              --service "${SERVICE_NAME}" \
              --health-url "${HEALTH_URL}" \
              --api-env-file "${API_ENV_FILE:-/etc/genarrative/api-server.env}" \
              --database "${DATABASE}" \
              --spacetime-server-url "${SPACETIME_SERVER_URL:-http://127.0.0.1:3101}"
          '
        '''
      }
    }
  }

  post {
    always {
      script {
        def notificationParameters = [
          string(name: 'SOURCE_JOB_NAME', value: env.JOB_NAME),
          string(name: 'SOURCE_BUILD_NUMBER', value: env.BUILD_NUMBER),
          string(name: 'SOURCE_BUILD_URL', value: env.BUILD_URL ?: ''),
          string(name: 'SOURCE_RESULT', value: currentBuild.currentResult ?: 'UNKNOWN'),
          string(name: 'SOURCE_BRANCH', value: params.SOURCE_BRANCH ?: ''),
          string(name: 'SOURCE_COMMIT', value: env.SOURCE_COMMIT ?: (params.COMMIT_HASH ?: '')),
          string(name: 'BUILD_VERSION', value: env.EFFECTIVE_BUILD_VERSION ?: (params.BUILD_VERSION ?: '')),
          string(name: 'DEPLOY_TARGET', value: params.DEPLOY_TARGET ?: ''),
          string(name: 'DATABASE', value: params.DATABASE ?: ''),
          string(name: 'SUMMARY', value: 'API 发布流水线结束'),
        ]
        def notificationRecipients = params.NOTIFICATION_EMAILS?.trim()
        if (notificationRecipients) {
          notificationParameters.add(string(name: 'EMAIL_RECIPIENTS', value: notificationRecipients))
        }
        try {
          build job: 'Genarrative-Notify-Email',
            wait: false,
            propagate: false,
            parameters: notificationParameters
        } catch (error) {
          echo "邮件通知触发失败: ${error.message}"
        }
      }
    }
    success {
      echo "API 发布完成: version=${params.BUILD_VERSION}"
    }
  }
}