when:
  event: [push, cron, manual]

matrix:
  include:
    - PLATFORM: rhel-9
      PLATFORM_ID: el9
    - PLATFORM: centos-8
      PLATFORM_ID: el8
    - PLATFORM: ubuntu-2204
      PLATFORM_ID: 2204
    - PLATFORM: ubuntu-2404
      PLATFORM_ID: 2404
    - PLATFORM: opensuse-155
      PLATFORM_ID: suse155
    - PLATFORM: alpine-320
      PLATFORM_ID: alpine320

steps:
  # Ensures that we're always using the latest available upstream build chain
  # - name: Pull upstream
  #   image: alpine:3.20
  #   commands:
  #     - apk add -q --no-cache git
  #     - git remote add upstream https://github.com/cynkra/r-builds.git
  #     - git config --global user.email "you@example.com"
  #     - git config --global user.name "Your Name"
  #     - git config pull.ff only
  #     - git fetch upstream
  #     - git merge upstream/main --allow-unrelated-histories
  #.

  - name: Get latest R version
    image: alpine:3.20
    commands:
      - apk add -q --no-cache curl
      - curl -s https://raw.githubusercontent.com/Homebrew/homebrew-core/master/Formula/r/r.rb | grep -o 'R-[0-9]*\.[0-9]*\.[0-9]*' | tr -d 'R-' | tr -d '"' > r-release-version.txt
      # - echo "4.3.3" > r-release-version.txt
      - cat r-release-version.txt
    backend_options:
      kubernetes:
        resources:
          requests:
            memory: 50Mi
            cpu: 200m
          limits:
            memory: 200Mi
            cpu: 500m
        nodeSelector:
          topology.kubernetes.io/region: fsn1

  - name: Check if files for R version already exist in s3
    environment:
      AWS_ACCESS_KEY_ID:
        from_secret: b2_application_key_id
      AWS_SECRET_ACCESS_KEY:
        from_secret: b2_application_key
      # AWS_REGION: s3.eu-central-003
      AWS_ENDPOINT_URL: https://s3.eu-central-003.backblazeb2.com
    image: alpine:3.20
    commands:
      - apk add -q --no-cache aws-cli
      - aws s3 ls s3://devxy-r-builds/${PLATFORM_ID}/ | tail -1 | awk '{print $NF}' | cut -c 3-7 > r_build_latest.txt
      - cat r_build_latest.txt
    backend_options:
      kubernetes:
        nodeSelector:
          topology.kubernetes.io/region: fsn1

  # ref: https://github.com/woodpecker-ci/woodpecker/discussions/2721
  - name: Build
    image: alpine:3.20
    privileged: true
    environment:
      DOCKER_HOST: tcp://docker:2375
    commands: |
      # docker info
      if [ ! -s r_build_latest.txt ] || [ ! "$(cat r-release-version.txt)" = "$(cat r_build_latest.txt)" ]; then
        apk add -q --no-cache py3-pip make just aws-cli docker-compose
        pip3 install -q b2 --break-system-packages
        just build-r-${PLATFORM} $(cat r-release-version.txt)
      fi
    backend_options:
      kubernetes:
        resources:
          requests:
            memory: 200Mi
            cpu: 500m
          limits:
            memory: 1000Mi
            cpu: 4000m
        nodeSelector:
          kubernetes.io/arch: "arm64"
          topology.kubernetes.io/region: fsn1
        tolerations:
          - key: "CI"
            operator: "Equal"
            value: "true"
            effect: "NoSchedule"

  - name: Upload
    image: woodpeckerci/plugin-s3:1.3.0
    pull: true
    settings:
      bucket: devxy-r-builds
      strip_prefix: /tmp/${PLATFORM}/
      source: /tmp/${PLATFORM}/*
      target: ${PLATFORM_ID}/
      region: s3.eu-central-003
      acl: public-read
      access_key:
        from_secret: b2_application_key_id
      secret_key:
        from_secret: b2_application_key
      endpoint: s3.eu-central-003.backblazeb2.com
      overwrite: false
    volumes:
      - ci-tmp-rwx:/tmp # agent on k8s
      # - /tmp:/tmp # agent on VM
    backend_options:
      kubernetes:
        resources:
          requests:
            memory: 100Mi
            cpu: 200m
          limits:
            memory: 1000Mi
            cpu: 1000m
        nodeSelector:
          topology.kubernetes.io/region: fsn1

services:
  docker:
    environment:
      DOCKER_TLS_CERTDIR: ""
    image: docker:26-dind
    commands:
      - mkdir -p /tmp/${PLATFORM}
      - dockerd --tls=false --host=tcp://0.0.0.0:2375
    privileged: true
    ports:
      - 2375
    volumes:
      - ci-tmp-rwx:/tmp # agent on k8s
    backend_options:
      kubernetes:
        nodeSelector:
          kubernetes.io/arch: "arm64"
          topology.kubernetes.io/region: fsn1