update-starter-workflows.yml

name: Update starter workflows

on:
  push:
    branches: [trunk]
    paths:
      - '.github/workflows/example-*.yml'
      - '.github/workflows/update-starter-workflows.yml'
  pull_request:
    branches: [trunk]
    paths:
      - '.github/workflows/example-*.yml'
      - '.github/workflows/update-starter-workflows.yml'

env:
  REPOSITORY: 'core-github-actions-templates'

concurrency:
  group: '${{ github.workflow }}-${{ github.ref }}'
  cancel-in-progress: true

jobs:
  update-starter-workflows:
    name: Update starter workflows
    runs-on: elvia-runner
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          path: ${{ env.REPOSITORY }}

      - name: Get GitHub App token
        uses: actions/create-github-app-token@v1
        id: app-token
        with:
          app-id: ${{ vars.GH_APP_ID }}
          private-key: ${{ secrets.GH_APP_PRIVATE_KEY }}
          owner: ${{ github.repository_owner }}

      - name: Checkout .github repository
        uses: actions/checkout@v4
        with:
          path: 'dotgithub'
          repository: '3lvia/.github'
          token: ${{ steps.app-token.outputs.token }}

      - name: Update workflows-templates
        shell: bash
        run: |
          mkdir -p dotgithub/workflow-templates
          for workflow_path in ${{ env.REPOSITORY }}/.github/workflows/example-*.yml; do
            echo "Processing $workflow_path"

            file_name=$(basename "$workflow_path")
            file_name_no_prefix="${file_name#example-}"

            printf "file_name: %s\n" "$file_name"
            printf "file_name_no_prefix: %s\n" "$file_name_no_prefix"

            new_workflow_path="dotgithub/workflow-templates/$file_name_no_prefix"
            cp "$workflow_path" "$new_workflow_path"

            sed -i "s/  APPLICATION_NAME: '.*'/  APPLICATION_NAME: '<your application name here>'/g" "$new_workflow_path"
            sed -i "s/  SYSTEM_NAME: '.*'/  SYSTEM_NAME: '<your system name here>'/g" "$new_workflow_path"
            sed -i "s/  HELM_VALUES_FILE: '.*'/  HELM_VALUES_FILE: '.github\/deploy\/values.yml'/g" "$new_workflow_path"
            sed -i "s/  PROJECT_FILE: '.*'/  PROJECT_FILE: '<your project file path here>'/g" "$new_workflow_path"
            sed -i "s/#  pull_request:/  pull_request:/g" "$new_workflow_path"
            sed -i 's/#    branches:/    branches:/g' "$new_workflow_path"
            sed -i 's/branches: \[trunk\]/branches: \[$default-branch\]/g' "$new_workflow_path"
            sed -i "s/checkout: 'false'.*\$//g" "$new_workflow_path"

            # We checkout core repo to test on demo apps, so we remove this part from the examples.
            perl -0777 -i -pe 's/# START REMOVE FROM EXAMPLE.*?# END REMOVE FROM EXAMPLE\n//gms' "$new_workflow_path"

            # Special case for ISS example
            sed -i 's/branches: \[too-complicated-to-setup-tests-for-this-so-we-dont\]/branches: \[$default-branch\]/g' "$new_workflow_path"

            # Special case for replacing name of concurrency group for demo-api-go, since it is deployed twice (go.mod and Dockerfile).
            # TODO: loop and don't hardcode envs three times
            sed -i "s/group: 'dev-.*--this-group-is-replaced-in-final-example-needs-this-to-not-deploy-demo-api-go-simultaneously-in-two-examples'/group: '${{ '\${{ github.workflow }}-\${{ github.ref }}-deploy-dev' }}'/g" "$new_workflow_path"
            sed -i "s/group: 'test-.*--this-group-is-replaced-in-final-example-needs-this-to-not-deploy-demo-api-go-simultaneously-in-two-examples'/group: '${{ '\${{ github.workflow }}-\${{ github.ref }}-deploy-test' }}'/g" "$new_workflow_path"
            sed -i "s/group: 'prod-.*--this-group-is-replaced-in-final-example-needs-this-to-not-deploy-demo-api-go-simultaneously-in-two-examples'/group: '${{ '\${{ github.workflow }}-\${{ github.ref }}-deploy-prod' }}'/g" "$new_workflow_path"

            new_workflow_properties_file="dotgithub/workflow-templates/${file_name_no_prefix%.yml}.properties.json"
            if [ ! -f "$new_workflow_properties_file" ]; then
              echo "Did not find properties file $new_workflow_properties_file, creating new properties file for workflow $new_workflow_path."
              new_workflow_name=$(yq -r '.name' "$new_workflow_path")
              cat << EOF > "$new_workflow_properties_file"
            {
              "name": "$new_workflow_name",
              "description": "$new_workflow_name"
            }
          EOF
            else
              echo "Properties file $new_workflow_properties_file already exists for $new_workflow_path, will not overwrite."
            fi
          done

      - name: Get examples diff
        if: github.event_name == 'pull_request'
        id: get-diff
        run: |
          git add workflow-templates
          examples_files_changed=$(git diff --name-only --staged workflow-templates | base64 -w0)
          examples_diff=$(git diff --staged workflow-templates | base64 -w0)

          echo "examples-files-changed=$examples_files_changed" >> "$GITHUB_OUTPUT"
          echo "examples-diff=$examples_diff" >> "$GITHUB_OUTPUT"
        working-directory: 'dotgithub'

      - name: Add comment with diff
        if: github.event_name == 'pull_request' && steps.get-diff.outputs.examples-files-changed != ''
        uses: actions/github-script@v7
        with:
          github-token: ${{ steps.app-token.outputs.token }}
          script: |
            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
            });

            const header = "## 📝 Starter Workflow Templates Update\n";
            const examplesFilesChanged = atob('${{ steps.get-diff.outputs.examples-files-changed }}');
            const examplesDiff = atob('${{ steps.get-diff.outputs.examples-diff }}');

            const botComment = comments.find(
              (comment) =>
                comment.user.type === "Bot" &&
                comment.body.includes(header)
            );

            const body = `${header}
            The starter workflow templates have been updated. Please review the changes below.\n
            **Files changed:**\n
            ${examplesFilesChanged}

            **<details><summary>Full diff:</summary>**

            \`\`\`\n
            ${examplesDiff}
            \`\`\`

            </details>
            `;

            if (botComment) {
              github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: botComment.id,
                body,
              });
            } else {
              github.rest.issues.createComment({
                issue_number: context.issue.number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                body,
              });
            }

      - name: Commit changes
        shell: bash
        if: github.event_name == 'push'
        run: |
          if [[ -z "$(git status --porcelain)" ]]; then
            echo 'No changes to commit.'
            exit 0
          fi

          git config user.email '${{ vars.GH_APP_USER_EMAIL }}'
          git config user.name '${{ vars.GH_APP_USERNAME }}'

          git add workflow-templates
          git commit -m 'Update starter workflows'

          for git_file in $(git ls-files); do
            cat "$git_file"
          done
          git push
        working-directory: 'dotgithub'
        env:
          GH_TOKEN: ${{ steps.app-token.outputs.token }}