# Copyright 2023 The Janus IDP Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

name: PR Build operator, bundle, and catalog images

on:
  # /!\ Warning: using the pull_request_target event to be able to read secrets. But using this event without the cautionary measures described below
  # may allow unauthorized GitHub users to open a “pwn request” and exfiltrate secrets.
  # As recommended in https://iterative.ai/blog/testing-external-contributions-using-github-actions-secrets,
  # we are adding an 'authorize' job that checks if the workflow was triggered from a fork PR. In that case, the "external" environment
  # will prevent the job from running until it's approved manually by human intervention.
  pull_request_target:
    types: [opened, synchronize, reopened, ready_for_review]
    branches: 
      - main
      - rhdh-1.[0-9]+
      - 1.[0-9]+.x

concurrency:
  group: ${{ github.workflow }}-${{ github.event.number || github.event.pull_request.head.ref }}
  cancel-in-progress: true

env:
  REGISTRY: quay.io

jobs:
  authorize:
    # The 'external' environment is configured with the odo-maintainers team as required reviewers.
    # All the subsequent jobs in this workflow 'need' this job, which will require manual approval for PRs coming from external forks.
    # see list of approvers in OWNERS file
    environment:
      ${{ (github.event.pull_request.head.repo.full_name == github.repository ||
        contains(fromJSON('["gazarenkov","jianrongzhang89","kadel","nickboldt","rm3l","kim-tsao","openshift-cherrypick-robot"]'), github.actor)) && 'internal' || 'external' }}
    runs-on: ubuntu-latest
    steps:
      - name: approved
        run: |
          echo "✓"

  pr-build:
    name: PR Publish
    runs-on: ubuntu-latest
    needs: authorize
    permissions:
      contents: read
      packages: write
      pull-requests: write

    steps:
      - name: Checkout
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
        with:
          fetch-depth: 0
          ref: ${{ github.event.pull_request.head.ref }}
          repository: ${{ github.event.pull_request.head.repo.full_name }}

      # check changes in this commit for regex include and exclude matches; pipe to an env var
      - name: Check for changes to build
        run: |
          # don't fail if nothing returned by grep
          set +e 
          CHANGES="$(git diff --name-only ${{ github.event.pull_request.base.sha }}..${{ github.event.pull_request.head.sha }} | \
            grep -E "workflows/.+-container-build.yaml|Makefile|bundle/|config/|go.mod|go.sum|.+\.go|docker/|\.dockerignore" | \
            grep -v -E ".+_test.go|/.rhdh/")";
          echo "Changed files for this commit:"
          echo "=============================="
          echo "$CHANGES"
          echo "=============================="
          {
            echo 'CHANGES<<EOF'
            echo $CHANGES
            echo EOF
          } >> "$GITHUB_ENV"

      - name: Setup Go
        # run this stage only if there are changes that match the includes and not the excludes
        if: ${{ env.CHANGES != '' }}
        uses: actions/setup-go@0c52d547c9bc32b1aa3301fd7a9cb496313a4491 # v5
        with:
          go-version-file: 'go.mod'

      - name: Get the last commit short SHA of the PR
        # run this stage only if there are changes that match the includes and not the excludes
        if: ${{ env.CHANGES != '' }}
        run: |
          SHORT_SHA=$(git rev-parse --short ${{ github.event.pull_request.head.sha }})
          echo "SHORT_SHA=$SHORT_SHA" >> $GITHUB_ENV
          BASE_VERSION=$(grep -E "^VERSION \?=" Makefile | sed -r -e "s/.+= //") # 0.0.1
          echo "BASE_VERSION=$BASE_VERSION" >> $GITHUB_ENV

      - name: Login to quay.io
        # run this stage only if there are changes that match the includes and not the excludes
        if: ${{ env.CHANGES != '' }}
        uses: docker/login-action@e92390c5fb421da1463c202d546fed0ec5c39f20 # v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ vars.QUAY_USERNAME }}
          password: ${{ secrets.QUAY_TOKEN }}

      - name: Build and push operator, bundle, and catalog images
        # run this stage only if there are changes that match the includes and not the excludes
        if: ${{ env.CHANGES != '' }}
        run: |
          # install skopeo, podman
          sudo apt-get -y update; sudo apt-get -y install skopeo podman

          export CONTAINER_ENGINE=podman 
          export VERSION=${{ env.BASE_VERSION }}-pr-${{ github.event.number }}-${{ env.SHORT_SHA }} 

          set -ex

          # build 3 container images with a 14d expiry
          CONTAINER_ENGINE=${CONTAINER_ENGINE} VERSION=${VERSION} make lint release-build

          # now copy images from local cache to quay, using 0.0.1-pr-123-f00cafe and 0.0.1-pr-123 tags
          for image in operator operator-bundle operator-catalog; do
            podman push quay.io/janus-idp/${image}:${VERSION} -q
            skopeo --insecure-policy copy --all docker://quay.io/janus-idp/${image}:${VERSION} docker://quay.io/janus-idp/${image}:${VERSION}
            skopeo --insecure-policy copy --all docker://quay.io/janus-idp/${image}:${VERSION} docker://quay.io/janus-idp/${image}:${VERSION%-*}
          done
      - name: Comment image links in PR
        # run this stage only if there are changes that match the includes and not the excludes
        if: ${{ env.CHANGES != '' }}
        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7
        with:
          script: |
            await github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: 'PR images are available:<br/><ol><li>https://quay.io/janus-idp/operator:${{ env.BASE_VERSION }}-pr-${{ github.event.number }}-${{ env.SHORT_SHA }}</li><li>https://quay.io/janus-idp/operator-bundle:${{ env.BASE_VERSION }}-pr-${{ github.event.number }}-${{ env.SHORT_SHA }}</li><li>https://quay.io/janus-idp/operator-catalog:${{ env.BASE_VERSION }}-pr-${{ github.event.number }}-${{ env.SHORT_SHA }}</li></ol>'
            })