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'
    WEB_ARTIFACT_ROOT = '/var/cache/genarrative-build/web-artifacts'
  }

  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-Web-Build', description: 'Web 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: 'WEB_LINK', defaultValue: '/srv/genarrative/web', description: 'Nginx 静态站点软链接')
    booleanParam(name: 'SYNC_WEB_ARTIFACT_FROM_BUILD_HOST', defaultValue: true, description: 'release 目标本地缺少 Web 大包时，是否通过 rsync 从构建机内网拉取')
    string(name: 'WEB_ARTIFACT_SYNC_HOST', defaultValue: 'genarrative-build-internal', description: 'rsync 源 SSH Host，通常来自 release 服务器上 Jenkins 运行用户的 ~/.ssh/config')
    string(name: 'WEB_ARTIFACT_SYNC_SSH_CONFIG', defaultValue: '', description: '可选，rsync 使用的 ssh config 绝对路径；留空使用当前用户默认 ~/.ssh/config')
  }

  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。')
          }
        }
      }
    }

    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: ${env.GIT_REMOTE_FALLBACK_URL}"
            checkoutFromRemote(env.GIT_REMOTE_FALLBACK_URL)
            env.EFFECTIVE_GIT_REMOTE_URL = env.GIT_REMOTE_FALLBACK_URL
          }
        }
        sh '''
          bash -lc '
            set -euo pipefail
            chmod +x scripts/jenkins-checkout-source.sh
            SOURCE_BRANCH="${SOURCE_BRANCH:-master}" \
            COMMIT_HASH="${COMMIT_HASH:-}" \
            GIT_REMOTE_URL="${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}/web.tar.gz.sha256,build/${params.BUILD_VERSION}/release-manifest.json,build/${params.BUILD_VERSION}/web-artifact-pointer.txt",
          target: '.',
          fingerprintArtifacts: true
        )
        sh '''
          bash -lc '
            set -euo pipefail

            artifact_dir="${WEB_ARTIFACT_ROOT}/${BUILD_JOB_NAME}/${BUILD_NUMBER_TO_DEPLOY}/${BUILD_VERSION}"
            if [[ ! -f "${artifact_dir}/web.tar.gz" ]]; then
              sync_enabled="${SYNC_WEB_ARTIFACT_FROM_BUILD_HOST:-true}"
              sync_host="${WEB_ARTIFACT_SYNC_HOST:-genarrative-build-internal}"
              sync_ssh_config="${WEB_ARTIFACT_SYNC_SSH_CONFIG:-}"

              if [[ "${DEPLOY_TARGET:-development}" == "release" && "${sync_enabled}" == "true" ]]; then
                if [[ -z "${sync_host}" ]]; then
                  echo "[web-deploy] release 目标需要同步 Web 大包，但 WEB_ARTIFACT_SYNC_HOST 为空。" >&2
                  exit 1
                fi

                echo "[web-deploy] release 目标本地缓存缺少 Web 大包，尝试从 ${sync_host} 同步: ${artifact_dir}"
                if ! command -v rsync >/dev/null 2>&1; then
                  echo "[web-deploy] 当前 release agent 缺少 rsync，请先安装 rsync 或预先挂载 Web 产物目录。" >&2
                  exit 1
                fi
                mkdir -p "${artifact_dir}"

                rsync_args=(-av --progress)
                if [[ -n "${sync_ssh_config}" ]]; then
                  rsync_args+=(-e "ssh -F ${sync_ssh_config}")
                fi

                rsync "${rsync_args[@]}" "${sync_host}:${artifact_dir}/" "${artifact_dir}/"
              fi
            fi

            if [[ ! -f "${artifact_dir}/web.tar.gz" ]]; then
              echo "[web-deploy] 未找到构建机本地 Web 大包: ${artifact_dir}/web.tar.gz" >&2
              echo "[web-deploy] development 目标要求 Web 构建与发布共享同一 Linux 构建/开发部署机；release 目标会默认通过 rsync 从 WEB_ARTIFACT_SYNC_HOST 拉取，也可预先同步或挂载 ${WEB_ARTIFACT_ROOT}。" >&2
              exit 1
            fi

            mkdir -p "build/${BUILD_VERSION}"
            cp -f "${artifact_dir}/web.tar.gz" "build/${BUILD_VERSION}/web.tar.gz"
            if [[ -f "${artifact_dir}/web.tar.gz.sha256" ]]; then
              cp -f "${artifact_dir}/web.tar.gz.sha256" "build/${BUILD_VERSION}/web.tar.gz.sha256"
            fi
            if [[ -f "${artifact_dir}/release-manifest.json" ]]; then
              cp -f "${artifact_dir}/release-manifest.json" "build/${BUILD_VERSION}/release-manifest.json"
            fi
            echo "[web-deploy] 已从构建机本地目录获取 Web 大包: ${artifact_dir}"
          '
        '''
      }
    }

    stage('Deploy Web') {
      agent {
        label "${params.DEPLOY_TARGET == 'development' ? 'linux && genarrative-build' : 'linux && genarrative-release-deploy'}"
      }
      steps {
        sh '''
          bash -lc '
            set -euo pipefail
            chmod +x scripts/deploy/production-web-deploy.sh
            scripts/deploy/production-web-deploy.sh \
              --source-dir "build/${BUILD_VERSION}" \
              --version "${BUILD_VERSION}" \
              --release-root "${RELEASE_ROOT}" \
              --current-link "${CURRENT_LINK}" \
              --web-link "${WEB_LINK}"
          '
        '''
      }
    }
  }

  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: 'Web 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: ${error.message}"
        }
      }
    }
    success {
      echo "Web 发布完成: version=${params.BUILD_VERSION}"
    }
  }
}