Terraform simple pipeline with Jenkins

Jenkinsfile

pipeline {
  agent any
  options { timestamps ()
           disableConcurrentBuilds() }
  environment {
    TERRAFORM_CMD='terraform'
  }
  stages {
        stage('Build') {
        steps {
                sh '''
                     # prepare environment for pipeline
                '''
            }
        }
        stage('init/plan/apply/destroy') {
            steps {
                sh '''
                    cd myrepo
                    # TFACTION can be `init`, `plan`, `apply` and `destory`,
                    # some environment varialbe like creating resouces with that env prefix, `ENV_PREFIX`
                    # Also the pipeline assuem you storing stats on remote
                    case $TFACTION in
                       init)  
                           # create workspace if not exist, or you can use single workspace
                           $TERRAFORM_CMD init
                           $TERRAFORM_CMD workspace list
                           $TERRAFORM_CMD workspace select $ENV_PREFIX || $TERRAFORM_CMD workspace new $ENV_PREFIX
                           $TERRAFORM_CMD validate
                           ;;
                       apply)  
                           $TERRAFORM_CMD init
                           $TERRAFORM_CMD workspace list
                           $TERRAFORM_CMD workspace select $ENV_PREFIX || $TERRAFORM_CMD workspace new $ENV_PREFIX
                           $TERRAFORM_CMD init
                           #$TERRAFORM_CMD validate && $TERRAFORM_CMD apply --auto-approve
                           $TERRAFORM_CMD validate && ($TERRAFORM_CMD apply || $TERRAFORM_CMD apply --auto-approve)
                           ;;
                       destroy)
                           $TERRAFORM_CMD init 
                           $TERRAFORM_CMD workspace list
                           $TERRAFORM_CMD workspace select $ENV_PREFIX || $TERRAFORM_CMD workspace new $ENV_PREFIX                           
                           $TERRAFORM_CMD init
                           $TERRAFORM_CMD validate && ($TERRAFORM_CMD destroy || ($TERRAFORM_CMD destroy --auto-approve || (sh -x ./clear_script.sh && $TERRAFORM_CMD validate && $TERRAFORM_CMD destroy --auto-approve)))
                         ;;
                       *) 
                           echo "wrong choice"
                           ;;
                    esac
                '''
            }
        }
  }
}