pipeline {
    agent { label 'docker' }

    environment {
        DOCKER_REGISTRY = "docker.nclazz.de"
        DOCKER_IMAGE_NAME = "nclazz/static-webserver:latest"
    }

    stages {
        stage('Build Docker Image') {
            steps {
                script {
                    docker.withRegistry("https://$DOCKER_REGISTRY", "jenkins_nexus") {
                        sh 'docker build --tag $DOCKER_REGISTRY/$DOCKER_IMAGE_NAME .'
                        sh 'docker push $DOCKER_REGISTRY/$DOCKER_IMAGE_NAME'
                        sh 'docker rmi $(docker images --filter "dangling=true" -q --no-trunc)'
                    }
                }
            }
        }
    }
    post {
        always {
            cleanWs()
        }
        failure {
            slackSend(
                    channel: "notifications",
                    color: "danger",
                    message: "There is a *build failure* in ${env.JOB_NAME}.\nBuild: ${env.BUILD_URL} "
            )
            emailext(
                    recipientProviders: [developers()],
                    from: "jenkins@nclazz.de",
                    subject: "Jenkins job ${env.JOB_NAME}#${env.BUILD_NUMBER} failed",
                    body: """
                        There is a build failure in ${env.JOB_NAME}.
                    Build: ${env.BUILD_URL}
                    Logs: ${env.BUILD_URL}console
                    Changes: ${env.BUILD_URL}changes
                    --
                        """
            )
        }
        unstable {
            slackSend(
                    channel: "notifications",
                    color: "warning",
                    message: "Some tests have failed in ${env.JOB_NAME}.\nBuild: ${env.BUILD_URL} "
            )
            emailext(
                    recipientProviders: [developers()],
                    from: "jenkins@nclazz.de",
                    subject: "Jenkins job ${env.JOB_NAME}#${env.BUILD_NUMBER} unstable",
                    body: """
                        Some tests have failed in ${env.JOB_NAME}.
                        Build: ${env.BUILD_URL}
                        Logs: ${env.BUILD_URL}console
                        Changes: ${env.BUILD_URL}changes
                        --
                        """
            )
        }
        fixed {
            slackSend(
                    channel: "notifications",
                    color: "good",
                    message: "The build ${env.JOB_NAME} completed successfully and is back to normal.\nBuild: ${env.BUILD_URL} "
            )
            emailext(
                    recipientProviders: [developers()],
                    from: "jenkins@nclazz.de",
                    subject: "Jenkins job ${env.JOB_NAME}#${env.BUILD_NUMBER} fixed",
                    body: """
                        The build ${env.JOB_NAME} completed successfully and is back to normal.
                        
                        Build: ${env.BUILD_URL}
                        Logs: ${env.BUILD_URL}console
                        Changes: ${env.BUILD_URL}changes
                        --
                        """
            )
        }
    }
}