pipeline {
  agent {
    kubernetes {
      defaultContainer 'builder'
      yaml """
apiVersion: v1
kind: Pod
spec:
  nodeSelector:
    kubernetes.io/arch: arm64
    node-role.kubernetes.io/worker: "true"
  containers:
    - name: dind
      image: docker:27-dind
      securityContext:
        privileged: true
      env:
        - name: DOCKER_TLS_CERTDIR
          value: ""
      args:
        - "--mtu=1400"
        - "--host=unix:///var/run/docker.sock"
        - "--host=tcp://0.0.0.0:2375"
      volumeMounts:
        - name: dind-storage
          mountPath: /var/lib/docker
        - name: workspace-volume
          mountPath: /home/jenkins/agent
    - name: builder
      image: docker:27
      command:
        - cat
      tty: true
      env:
        - name: DOCKER_HOST
          value: tcp://localhost:2375
        - name: DOCKER_TLS_CERTDIR
          value: ""
      volumeMounts:
        - name: workspace-volume
          mountPath: /home/jenkins/agent
        - name: docker-config-writable
          mountPath: /root/.docker
        - name: harbor-config
          mountPath: /docker-config
  volumes:
    - name: docker-config-writable
      emptyDir: {}
    - name: dind-storage
      emptyDir: {}
    - name: harbor-config
      secret:
        secretName: harbor-robot-pipeline
        items:
          - key: .dockerconfigjson
            path: config.json
    - name: workspace-volume
      emptyDir: {}
"""
    }
  }
  stages {
    stage('Checkout') {
      steps {
        checkout scm
      }
    }
    stage('Prep toolchain') {
      steps {
        container('builder') {
          sh '''
            set -euo pipefail
            apk add --no-cache bash git jq
            mkdir -p /root/.docker
            cp /docker-config/config.json /root/.docker/config.json
          '''
        }
      }
    }
    stage('Compute version') {
      steps {
        container('builder') {
          script {
            def semver = sh(returnStdout: true, script: 'git describe --tags --exact-match || true').trim()
            if (!semver) {
              semver = sh(returnStdout: true, script: 'git rev-list --count HEAD').trim()
              semver = "0.1.0-${semver}"
            }
            sh "echo SEMVER=${semver} > build.env"
          }
        }
      }
    }
    stage('Buildx setup') {
      steps {
        container('builder') {
          sh '''
            set -euo pipefail
            seq 1 10 | while read _; do
              docker info && break || sleep 2
            done
            docker buildx create --name bstein-builder --driver docker-container --bootstrap --use
          '''
        }
      }
    }
    stage('Build & push image') {
      steps {
        container('builder') {
          sh '''
            set -euo pipefail
            VERSION_TAG=$(cut -d= -f2 build.env)
            docker buildx build --platform linux/arm64 \
              --tag registry.bstein.dev/infra/soteria:${VERSION_TAG} \
              --tag registry.bstein.dev/infra/soteria:latest \
              --push .
          '''
        }
      }
    }
  }
  post {
    always {
      script {
        if (fileExists('build.env')) {
          def env = readProperties file: 'build.env'
          echo "Build complete for ${env.SEMVER}"
        }
      }
      archiveArtifacts artifacts: 'build/*', allowEmptyArchive: true
    }
  }
}