pipeline {
  agent any

  triggers {
    GenericTrigger(
      causeString: 'Triggered on tag push',
      token: 'tag-trigger-secret',
      printContributedVariables: true,
      printPostContent: true,
      regexpFilterExpression: 'ref=refs/tags/.*',
      regexpFilterText: '$ref'
    )
  }

  environment {
    REGISTRY = 'codeberg.org'
    IMAGE_NAME = "${REGISTRY}/lvl0/incr"
    DOCKER_CREDENTIALS_ID = 'codeberg-registry'
  }

  stages {
    stage('Tag Check') {
      steps {
        script {
          def isTag = sh(script: 'git describe --tags --exact-match || echo "nope"', returnStdout: true).trim()
          if (isTag == "nope") {
            echo "Not a tag. Skipping build."
            currentBuild.result = 'NOT_BUILT'
            return
          }
        }
      }
    }
    stage('Build & Push Docker Image') {
      when {
        expression {
          return env.GIT_COMMIT && env.GIT_COMMIT != ""
        }
      }
      steps {
        sh 'docker build -t $IMAGE_NAME:$GIT_COMMIT -f docker/Dockerfile .'
        withCredentials([usernamePassword(credentialsId: "$DOCKER_CREDENTIALS_ID", usernameVariable: 'USERNAME', passwordVariable: 'PASSWORD')]) {
          sh """
            echo "$PASSWORD" | docker login $REGISTRY -u "$USERNAME" --password-stdin
            docker push $IMAGE_NAME:$GIT_COMMIT
          """
        }
      }
    }
  }
}