pipeline {
    agent any

    environment {
          AWS_ACCESS_KEY_ID = credentials('aws-access-key-id')  // JenkinsのCredentialで設定したキー
          AWS_SECRET_ACCESS_KEY = credentials('aws-secret-access-key')  // 同じくCredentialで設定したシークレットキー
          PUBLIC_IP  = '' //WebサーバーのパブリックIP
          PRIVATE_IP = '' //WebサーバーのプライベートIP
          EC2_ID     = '' //WebサーバーのEC2インスタンスID
          ANSIBLE_HOST_KEY_CHECKING = false
          RECIPIENT_SUCCESS = 'keduka@cm.jip.co.jp'  // 成功時の通知先
          RECIPIENT_FAILURE = 'Jenkins_sendmail@zohomail.jp'  // 失敗時の通知先
    }

    options {
      skipDefaultCheckout(true)
    }
    stages{
      stage("checkout") {
        steps {
          // Iacコードを取得
          checkout scm
        }
      }
      stage("terraform init") {
        steps {
          // 初期化
          dir('step3/terraform'){
            sh "terraform init"
          }
        }
      }
      stage("terraform plan") {
        steps {
          // 実行計画
          dir('step3/terraform'){
            sh "terraform plan -out=plan.out"
          }
        }
      }
      stage("terraform apply") {
        steps {
          // 実行
          dir('step3/terraform'){
            sh "terraform apply plan.out"
          }
        }
      }
      stage('Get Terraform Output') {
        steps {
          // ファイル出力
          script {
              dir('step3/terraform'){
                  PUBLIC_IP  = sh(returnStdout: true, script: 'terraform output -raw instance_public_ip').trim()
                  PRIVATE_IP = sh(returnStdout: true, script: 'terraform output -raw instance_private_ip').trim()
                  EC2_ID     = sh(returnStdout: true, script: 'terraform output -raw instance_ec2_id').trim()
              }
              dir("${env.WORKSPACE}/step3/ansible"){
                   def data1 = "[web]\n" + PRIVATE_IP + "\n" 
                   def var1 = "ansible_port=22\n"
                   def var2 = "ansible_user=ec2-user\n"
                   def var3 = "ansible_ssh_private_key_file=~/.ssh_key\n"
                   def data2 = "[web:vars]\n" + var1 + var2 + var3
                   def data = data1 + "\n" + data2
                   writeFile(file: 'host', text: data)
              }
          }
        }
      }
      stage('Initialize') {
          steps {
              script {
                  // インスタンスのステータスOKまで待機
                  sh("aws ec2 wait instance-status-ok --instance-ids ${EC2_ID}")
              }
          }
      }
      stage('Syntax Check') {
          steps {
              script {
                // Ansible Playbookの文法チェック
                dir('step3/ansible'){
                  ansiblePlaybook(
                      playbook: 'playbook.yml',
                      inventory: 'host',
                      extras: '--syntax-check'
                  )
                }
              }
          }
      }
      stage('Dry Run (Check Mode)') {
          steps {
              script {
                // Ansible Playbookの仮実行 (チェックモード)
                dir('step3/ansible'){
                  ansiblePlaybook(
                      playbook: 'playbook.yml',
                      inventory: 'host',
                      extras: '--check'
                  )
                }
              }
          }
      }
      stage('Apply (Real Execution)') {
          steps {
              script {
                // Ansible Playbookの本実行
                dir('step3/ansible'){
                  ansiblePlaybook(
                      playbook: 'playbook.yml',
                      inventory: 'host'
                  )
               }
              }
          }
      }
      stage('Check Web Application Status') {
          steps {
             script {
               def status = '0' 
               try {
                   // Webサイトのステータスをチェックする
                   def url = "http://${PUBLIC_IP}/"
                   status = sh(script: "curl -o /dev/null -s -w '%{http_code}' ${url}", returnStdout: true).trim()
               } catch (Exception e) {
                  // エラー発生時でもジョブを失敗させない
                  echo "Error while checking the website: ${e.getMessage()}"
               }
               
               if (status != '200') {
                   echo "Website is not accessible. Status code: ${status}"
                 } else {
                   echo "Website is running successfully. Status code: ${status}"
                 }
             }
          }
      }
    }

    post {
        success {
            // 正常終了時にメール通知
            mail to: "${RECIPIENT_SUCCESS}",
              from: 'jenkins_sendmail@zohomail.jp',
              subject: "SUCCESS: Web Application Deployed Successfully: ${currentBuild.fullDisplayName}",
              body: "The web application was deployed successfully and is accessible at http://${PUBLIC_IP}/"
        }
        failure {
            // エラー発生時にエラーメール通知
            mail to: "${RECIPIENT_FAILURE}",
              from: 'jenkins_sendmail@zohomail.jp',
              subject: "FAILURE: Web Application Deployment Failed: ${currentBuild.fullDisplayName}",
              body: "The web application deployment failed. Please check the Jenkins job for more details.\n${env.BUILD_URL}"
        }
    }
}