pipeline {
  agent {
    label 'linux && x86_64'
  }

  parameters {
    string(
      name: 'GIT_REF',
      defaultValue: 'master',
      description: 'Branch, tag, or commit to build.'
    )
    string(
      name: 'IMAGE_NAME',
      description: 'Docker image name.',
      defaultValue: params.IMAGE_NAME ?: 'wakuorg/go-waku',
    )
    string(
      name: 'IMAGE_TAG',
      description: 'Docker image tag.',
      defaultValue: getDefaultImageTag()
    )
    string(
      name: 'DOCKER_CRED',
      description: 'Name of Docker Hub credential.',
      defaultValue: params.DOCKER_CRED ?: 'dockerhub-vacorgbot-api-token',
    )
  }

  options {
    timestamps()
    buildDiscarder(logRotator(
      numToKeepStr: '10',
      daysToKeepStr: '30',
    ))
  }

  stages {
    stage('Build') {
      steps { script {
        image = docker.build(
          "${params.IMAGE_NAME}:${params.IMAGE_TAG ?: GIT_COMMIT.take(8)}",
          "--build-arg='GIT_COMMIT=${GIT_COMMIT.take(8)}' ."
        )
      } }
    }

    stage('Push') {
      when { expression { params.IMAGE_TAG != '' } }
      steps { script {
        withDockerRegistry([
          credentialsId: params.DOCKER_CRED, url: ''
        ]) {
          image.push()
          /* If Git ref is a tag push it as Docker tag too. */
          if (params.GIT_REF ==~ /v\d+\.\d+\.\d+.*/) {
            image.push(params.GIT_REF)
          }
        }
      } }
    }
  }
  post {
    success { script {
      discordNotify(
        header: 'Go-Waku build successful!',
        cred: 'discord-waku-deployments-webhook',
      )
    } }
    always { cleanWs() }
  }
}

def discordNotify(Map args=[:]) {
  def opts = [
    header: args.header ?: 'Deployment successful!',
    cred: args.cred ?: null,
  ]
  def repo = [
    url: GIT_URL.minus('.git'),
    branch: GIT_BRANCH.minus('origin/'),
    commit: GIT_COMMIT.take(8),
    prev: (
      env.GIT_PREVIOUS_SUCCESSFUL_COMMIT ?: env.GIT_PREVIOUS_COMMIT ?: 'master'
    ).take(8),
  ]
  wrap([$class: 'BuildUser']) {
    BUILD_USER_ID = env.BUILD_USER_ID
  }
  withCredentials([
    string(
      credentialsId: opts.cred,
      variable: 'DISCORD_WEBHOOK',
    ),
  ]) {
    discordSend(
      link: env.BUILD_URL,
      result: currentBuild.currentResult,
      webhookURL: env.DISCORD_WEBHOOK,
      title: "${env.JOB_NAME}#${env.BUILD_NUMBER}",
      description: """
        ${opts.header}
        Image: [`${IMAGE_NAME}:${IMAGE_TAG}`](https://hub.docker.com/r/${IMAGE_NAME}/tags?name=${IMAGE_TAG})
        Branch: [`${repo.branch}`](${repo.url}/commits/${repo.branch})
        Commit: [`${repo.commit}`](${repo.url}/commit/${repo.commit})
        Diff: [`${repo.prev}...${repo.commit}`](${repo.url}/compare/${repo.prev}...${repo.commit})
        By: [`${BUILD_USER_ID}`](${repo.url}/commits?author=${BUILD_USER_ID})
      """,
    )
  }
}

def getDefaultImageTag() {
  switch (env.JOB_BASE_NAME) {
    case 'docker-latest':  return 'latest'
    case 'docker-release': return 'stable'
    default:               return ''
  }
}