name: zcash-lightwalletd

on:
  workflow_dispatch:
  
  push:
    branches:
      - 'main'
    paths:
      # rebuild lightwalletd whenever the related Zebra code changes
      #
      # TODO: this code isn't compiled in this docker image
      #       rebuild whenever the actual code at adityapk00/lightwalletd/master changes
      - 'zebra-rpc/**'
      - 'zebrad/tests/acceptance.rs'
      - 'zebrad/src/config.rs'
      - 'zebrad/src/commands/start.rs'
      # these workflow definitions actually change the docker image
      - 'docker/zcash-lightwalletd/Dockerfile'
      - '.github/workflows/zcash-lightwalletd.yml'

  # Update the lightwalletd image when each related PR changes
  #
  # TODO: after NU5 mainnet activation and wallet orchard features are stable,
  #       consider just rebuilding the image on `main` merges
  pull_request:
    branches:
      - main
    paths:
      # rebuild lightwalletd whenever the related Zebra code changes
      # (this code isn't actually compiled in this docker image)
      - 'zebra-rpc/**'
      - 'zebrad/tests/acceptance.rs'
      - 'zebrad/src/config.rs'
      - 'zebrad/src/commands/start.rs'
      # these workflow definitions actually change the docker image
      - 'docker/zcash-lightwalletd/Dockerfile'
      - '.github/workflows/zcash-lightwalletd.yml'

env:
  GAR_BASE: us-docker.pkg.dev/zealous-zebra/zebra
  IMAGE_NAME: lightwalletd

jobs:
  build:
    name: Build images
    runs-on: ubuntu-latest
    permissions:
      contents: 'read'
      id-token: 'write'

    steps:
      - uses: actions/checkout@v3.0.2
        with:
          repository: adityapk00/lightwalletd
          ref: 'master'
          persist-credentials: false

      - uses: actions/checkout@v3.0.2
        with:
          path: zebra
          persist-credentials: false

      - name: Inject slug/short variables
        uses: rlespinasse/github-slug-action@v4
        with:
          short-length: 7

      # Automatic tag management and OCI Image Format Specification for labels
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v4.0.1
        with:
          # list of Docker images to use as base name for tags
          images: |
            ${{ env.GAR_BASE }}/${{ env.IMAGE_NAME }}
          # generate Docker tags based on the following events/attributes
          tags: |
            type=schedule
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            type=sha

      - name: Set up QEMU
        id: qemu
        uses: docker/setup-qemu-action@v2
        with:
          image: tonistiigi/binfmt:latest
          platforms: all

      # Setup Docker Buildx to allow use of docker cache layers from GH
      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v2

      # Setup gcloud CLI
      - name: Authenticate to Google Cloud
        id: auth
        uses: google-github-actions/auth@v0.8.0
        with:
          workload_identity_provider: 'projects/143793276228/locations/global/workloadIdentityPools/github-actions/providers/github-oidc'
          service_account: 'github-service-account@zealous-zebra.iam.gserviceaccount.com'
          token_format: 'access_token'

      - name: Login to Google Artifact Registry
        uses: docker/login-action@v2.0.0
        with:
          registry: us-docker.pkg.dev
          username: oauth2accesstoken
          password: ${{ steps.auth.outputs.access_token }}

      # Build and push image to Google Artifact Registry
      - name: Build & push
        id: docker_build
        uses: docker/build-push-action@v3.0.0
        with:
          target: build
          context: .
          file: ./zebra/docker/zcash-lightwalletd/Dockerfile
          platforms: |
            linux/amd64
            linux/arm64
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          push: true
          cache-from: type=registry,ref=${{ env.GAR_BASE }}/${{ env.IMAGE_NAME }}:buildcache
          cache-to: type=registry,ref=${{ env.GAR_BASE }}/${{ env.IMAGE_NAME }}:buildcache,mode=max