name: Release - Publish Docker Image

# This workflow listens to pubished releases or can be triggered manually.
# It includes releases and rc candidates.
# It fetches the binaries, checks sha256 and GPG
# signatures, then builds an injected docker
# image and publishes it.

on:
  release:
    types:
      - published
  workflow_dispatch:
    inputs:
      release_id:
        description: |
          Release ID.
          You can find it using the command:
          curl -s \
            -H "Authorization: Bearer ${GITHUB_TOKEN}" https://api.github.com/repos/$OWNER/$REPO/releases | \
            jq '.[] | { name: .name, id: .id }'
        required: true
        type: string
      image_type:
        description: Type of the image to be published
        required: true
        default: rc
        type: choice
        options:
          - rc
          - release
      registry:
        description: Container registry
        required: true
        type: string
        default: docker.io
      owner:
        description: Owner of the container image repo
        required: true
        type: string
        default: parity

env:
  RELEASE_ID: ${{ inputs.release_id }}
  ENGINE: docker
  REGISTRY: ${{ inputs.registry }}
  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
  DOCKER_OWNER: ${{ inputs.owner || github.repository_owner }}
  REPO: ${{ github.repository }}
  BINARY: polkadot-parachain
  EVENT_ACTION: ${{ github.event.action }}
  EVENT_NAME: ${{ github.event_name }}
  IMAGE_TYPE: ${{ inputs.image_type }}

jobs:
  fetch-artifacts:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout sources
        uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3

      - name: Prepare temp folder
        run: |
          TMP=$(mktemp -d)
          echo "TMP=$TMP" >> "$GITHUB_ENV"
          pwd
          ls -al "$TMP"

      - name: Fetch lib.sh from polkadot repo
        working-directory: ${{ env.TMP }}
        run: |
          curl -O -L \
            -H "Accept: application/vnd.github.v3.raw" \
            https://raw.githubusercontent.com/paritytech/polkadot/master/scripts/ci/common/lib.sh

          chmod a+x lib.sh
          ls -al

      - name: Fetch release artifacts based on final release tag
        #this step runs only if the workflow is triggered automatically when new release is published
        if: ${{ env.EVENT_NAME == 'release' && env.EVENT_ACTION != '' && env.EVENT_ACTION == 'published' }}
        run: |
          mkdir -p release-artifacts && cd release-artifacts

          for f in $BINARY $BINARY.asc $BINARY.sha256; do
            URL="https://github.com/${{ github.event.repository.full_name }}/releases/download/${{ github.event.release.tag_name }}/$f"
            echo " - Fetching $f from $URL"
            wget "$URL" -O "$f"
          done
          chmod a+x $BINARY
          cp -f ${TMP}/lib.sh .
          ls -al

      - name: Fetch rc artifacts or release artifacts based on release id
        #this step runs only if the workflow is triggered manually
        if: ${{ env.EVENT_NAME  == 'workflow_dispatch' }}
        run: |
          . ${TMP}/lib.sh

          fetch_release_artifacts

          chmod a+x release-artifacts/$BINARY
          ls -al

          cp -f ${TMP}/lib.sh release-artifacts/

      - name: Cache the artifacts
        uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8 # v3.3.1
        with:
          key: artifacts-${{ github.sha }}
          path: |
            ./release-artifacts/**/*

  build-container:
    runs-on: ubuntu-latest
    needs: fetch-artifacts

    steps:
      - name: Checkout sources
        uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3

      - name: Get artifacts from cache
        uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8 # v3.3.1
        with:
          key: artifacts-${{ github.sha }}
          fail-on-cache-miss: true
          path: |
            ./release-artifacts/**/*

      - name: Check sha256 ${{ env.BINARY }}
        working-directory: ./release-artifacts
        run: |
          . ./lib.sh

          echo "Checking binary $BINARY"
          check_sha256 $BINARY && echo "OK" || echo "ERR"

      - name: Check GPG ${{ env.BINARY }}
        working-directory: ./release-artifacts
        run: |
          . ./lib.sh
          import_gpg_keys
          check_gpg $BINARY

      - name: Build Injected Container image for ${{ env.BINARY }}
        env:
          IMAGE_NAME: ${{ env.BINARY }}
          OWNER: ${{ env.DOCKER_OWNER }}
        run: |
          ls -al
          echo "Building container for $BINARY"
          ./docker/scripts/build-injected-image.sh

      - name: Fetch rc commit and tag
        if: ${{ env.IMAGE_TYPE == 'rc' }}
        id: fetch_rc_refs
        run: |
          release=release-${{ inputs.release_id }} && \
          echo "release=${release}" >> $GITHUB_OUTPUT

          commit=$(git rev-parse --short HEAD) && \
          echo "commit=${commit}" >> $GITHUB_OUTPUT

          tag=$(git name-rev --tags --name-only $(git rev-parse HEAD)) && \
          [ "${tag}" != "undefined" ] && echo "tag=${tag}" >> $GITHUB_OUTPUT || \
          echo "No tag, doing without"

      - name: Fetch release tags
        if: ${{ env.IMAGE_TYPE == 'release' || env.EVENT_NAME == 'release' &&  env.EVENT_ACTION != '' && env.EVENT_ACTION == 'published' }}
        id: fetch_release_refs
        run: |
          VERSION=$(docker run --pull never --rm $DOCKER_OWNER/$BINARY --version | awk '{ print $2 }' )
          release=$( echo $VERSION | cut -f1 -d- )
          echo "tag=latest" >> $GITHUB_OUTPUT
          echo "release=${release}" >> $GITHUB_OUTPUT


      - name: Login to Dockerhub
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Tag and Push Container image for ${{ env.BINARY }}
        id: docker_push
        env:
          TAGS: ${{ join(steps.fetch_rc_refs.outputs.*, ',') || join(steps.fetch_release_refs.outputs.*, ',') }}
        run: |
          TAGS=${TAGS[@]:-latest}
          IFS=',' read -r -a TAG_ARRAY <<< "$TAGS"

          echo "The image ${BINARY} will be tagged with ${TAG_ARRAY[*]}"
          for TAG in "${TAG_ARRAY[@]}"; do
            $ENGINE tag ${DOCKER_OWNER}/${BINARY} ${DOCKER_OWNER}/${BINARY}:${TAG}
            $ENGINE push ${DOCKER_OWNER}/${BINARY}:${TAG}
          done

          $ENGINE images | grep ${BINARY}

      - name: Check version for the published image for ${{ env.BINARY }}
        env:
          RELEASE_TAG: ${{ steps.fetch_rc_refs.outputs.release || steps.fetch_release_refs.outputs.release  }}
        run: |
          echo "Checking tag ${RELEASE_TAG} for image ${REGISTRY}/${DOCKER_OWNER}/${BINARY}"
          $ENGINE run -i ${REGISTRY}/${DOCKER_OWNER}/${BINARY}:${RELEASE_TAG} --version