String cloud_provider = "aws"
String aws_region = "eu-west-1"
String default_stage = "prelive"
String aws_access_credentials = "fdc_${aws_region}_${default_stage}_infrastructure.automation.user"
String dynatrace_api_token_credentials = "api_token_dynatrace_${aws_region}_${default_stage}"


pipeline {
    agent {
        node {
            label 'vsds-terraform'
        }
    }

    environment {
        GIT_SSH_COMMAND = "ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no"

        AWS_ID = credentials("${aws_access_credentials}")
        AWS_ACCESS_KEY_ID     = "${env.AWS_ID_USR}"
        AWS_SECRET_ACCESS_KEY = "${env.AWS_ID_PSW}"

        AWS_REGION            = "${aws_region}"
        STAGE                 = "${default_stage}"
        CLOUD_PROVIDER        = "${cloud_provider}"

        API_TOKEN = credentials("${dynatrace_api_token_credentials}")
        TF_VAR_dt_api_token = "${env.API_TOKEN}"
    }

    options {
        timestamps()
        ansiColor('xterm')
        disableConcurrentBuilds(abortPrevious: true)
        timeout(time: 1, unit: 'HOURS')
    }

    stages {
        stage('terraform init') {
          steps {
            sshagent(credentials: ['sofa-user-automation']) {
              container('terraform') {
                sh """
                set -e
                cd environments/${CLOUD_PROVIDER}/${AWS_REGION}/${STAGE}
                terraform init
                """
              }
            }
          }
        }

        stage('Terraform plan') {
            steps {
              sshagent(credentials: ['sofa-user-automation']) {
                container('terraform') {
                  script {
                      env.PLAN_STATUS = sh(script: "cd environments/${CLOUD_PROVIDER}/${AWS_REGION}/${STAGE} && terraform plan -out=.terraform/plan.out -input=false -detailed-exitcode", returnStatus: true)
                      if (env.PLAN_STATUS == "1") {
                          currentBuild.result = "FAILURE"
                          error('Aborting the build.')
                          return
                      }

                  }
                }
              }
            }
          }

          stage('Interactive') {
              when {
                  allOf {
                      expression { env.PLAN_STATUS == "2" }
                  }
              }
              steps {
                  timeout(time: 15, unit: "MINUTES") {
                      input "Is this plan acceptable?"
                      milestone 1
                  }
              }
          }

          stage("terraform apply") {
              when {
                  allOf {
                      expression { env.PLAN_STATUS == "2" }
                  }
              }
              steps {
                container('terraform') {
                  sshagent(credentials: ['sofa-user-automation']) {
                    script {
                          sh "cd environments/${CLOUD_PROVIDER}/${AWS_REGION}/${STAGE} "
                          sh("terraform apply -input=false .terraform/plan.out")
                          }
                      }
                  }
              }
          }
    }

    post {
        always {
            cleanWs()

            script {
                currentBuild.result = currentBuild.result ?: 'SUCCESS'
                notifyBitbucket()
            }
        }
    }
}