pipeline {
  agent any

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

  stages {
    stage('Detect Tag') {
      steps {
        script {
          def tag = sh(script: 'git describe --tags --exact-match || true', returnStdout: true).trim()
          if (tag) {
            env.GIT_TAG = tag
            echo "✅ Detected tag: ${tag}"
          } else {
            echo "⛔ No tag detected — skipping build"
            currentBuild.result = 'SUCCESS'
            error("Skipping non-tag build")
          }
        }
      }
    }

    stage('Build Docker Image') {
      steps {
        echo "⚙️ Building Docker image: ${IMAGE_NAME}:${GIT_TAG}"
        sh "docker build -f docker/Dockerfile -t ${IMAGE_NAME}:${GIT_TAG} ."
      }
    }

    stage('Push to Registry') {
      steps {
        echo "📤 Pushing Docker image: ${IMAGE_NAME}:${GIT_TAG}"
        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_TAG}
          """
        }
      }
    }
  }
}