name: Docker and Helm Release

on:
  workflow_dispatch:

permissions:
  contents: write
  issues: read
  pull-requests: read
  packages: write

jobs:
  release:
    name: Validate Docs, Tag, and Docker Push & Helm Push
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with:
          token: ${{ secrets.BOT_TOKEN }}

      - name: Get New Chart Version
        id: nv
        run: |
          version=$(yq .version helm-charts/vmpooler/Chart.yaml)
          appVersion=$(yq .appVersion helm-charts/vmpooler/Chart.yaml)
          echo "version=$version" >> $GITHUB_OUTPUT
          echo "appVersion=$appVersion" >> $GITHUB_OUTPUT
          echo "Found version $version from helm-charts/vmpooler/Chart.yaml"
          echo "Found appVersion $appVersion from helm-charts/vmpooler/Chart.yaml"

      - name: Get Current Chart Version
        uses: actions/github-script@v6
        id: cv
        with:
          script: |
            const { data: response } = await github.rest.repos.getLatestRelease({
              owner: context.repo.owner,
              repo: context.repo.repo,
            })
            console.log(`The latest release is ${response.tag_name}`)
            return response.tag_name
          result-encoding: string

      - name: Get Current Docker Tag
        uses: actions/github-script@v6
        id: dv
        with:
          script: |
            // concat to build "vmpooler-deployment%2Fvmpooler"
            const packageName = [context.repo.repo, 'vmpooler'].join('/');

            const shouldRunDockerBuild = async () => {
              let runDockerBuild = true;
              // Iterate through all pages of list of package versions
              for await (const response of github.paginate.iterator(
                github.rest.packages.getAllPackageVersionsForPackageOwnedByOrg,
                {
                  package_type: 'container',
                  package_name: packageName,
                  org: context.repo.owner,
                }
              )) {
                // Loop through each version, destructure down to the tags array and search for existing tag
                for (const data of response.data) {
                  const { metadata: { container: { tags }}} = data;
                  console.log('List of docker tags:', tags);
                  if (tags.includes("${{ steps.nv.outputs.appVersion }}")) {
                    // Existing tag found, return false so that docker build does not run
                    console.log('Found existing tag for', "${{ steps.nv.outputs.appVersion }}");
                    runDockerBuild = false;
                    break;
                  };
                };
              };
              return runDockerBuild;
            };

            const returnValue = await shouldRunDockerBuild();
            console.log('return:', returnValue);
            return returnValue;

      - name: Generate Changelog
        uses: docker://githubchangeloggenerator/github-changelog-generator:1.16.2
        with:
          args: >-
            --future-release ${{ steps.nv.outputs.version }}
        env:
          CHANGELOG_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Validate Changelog
        run : |
          set -e
          if [[ -n $(git status --porcelain) ]]; then
            echo "Here is the current git status:"
            git status
            echo
            echo "The following changes were detected:"
            git --no-pager diff
            echo "Uncommitted PRs found in the changelog. Please submit a release prep PR of changes after running 'docker run -it --rm -e CHANGELOG_GITHUB_TOKEN -v "\$\(pwd\)":/usr/local/src/your-app githubchangeloggenerator/github-changelog-generator:1.16.2 github_changelog_generator --future-release ${{ steps.nv.outputs.version }}'"
            exit 1
          fi

      - name: Generate Release Notes
        uses: docker://githubchangeloggenerator/github-changelog-generator:1.16.2
        with:
          args: >-
            --since-tag ${{ steps.cv.outputs.result }}
            --future-release ${{ steps.nv.outputs.version }}
            --output release-notes.md
        env:
          CHANGELOG_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Tag Release
        uses: ncipollo/release-action@v1
        with:
          tag: ${{ steps.nv.outputs.version }}
          token: ${{ secrets.GITHUB_TOKEN }}
          bodyfile: release-notes.md
          draft: false
          prerelease: false

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push Docker
        if: ${{ steps.dv.outputs.result == 'true' }}
        uses: docker/build-push-action@v3
        with:
          context: docker
          push: true
          tags: |
            ghcr.io/${{ github.repository }}:${{ steps.nv.outputs.appVersion }}
            ghcr.io/${{ github.repository }}:latest

      - uses: azure/setup-helm@v3

      - uses: actions/setup-python@v4
        with:
          python-version: 3.9

      - name: Package Helm charts
        run: |
          set -e
          cd docs/
          helm package ../helm-charts/*
          helm repo index --url https://puppetlabs.github.io/vmpooler-deployment/ .

      - name: Git Commit and Push Helm Charts
        run: |
          git config user.name "puppetlabs-jenkins"
          git config user.email "team-quality-engineering@puppet.com"
          git add docs
          git commit -m "release helm-chart version ${{ steps.nv.outputs.version }}"
          git push