name: Generate Changelog

on:
  workflow_dispatch:
    inputs:
      version:
        required: true
        description: Release version (e.g. 2022.1.0 or 2022.1.0-beta.0)
  pull_request:
    types:
      - opened
      - synchronize

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

jobs:
  parse-version:
    if: "startsWith(github.head_ref, 'release/') || github.event_name == 'workflow_dispatch'"
    runs-on: ubuntu-latest
    outputs:
      version: ${{ steps.version.outputs.version }}
    steps:
      - name: Set release version Env (workflow_dispatch)
        if: github.event_name == 'workflow_dispatch'
        shell: bash
        run: |
          echo "RELEASE_VERSION=${{ github.event.inputs.version }} " >> $GITHUB_ENV

      - name: Set release version Env (pull_request)
        if: "startsWith(github.head_ref, 'release/')"
        shell: bash
        run: |
          echo "RELEASE_VERSION=${BRANCH/release\//} " >> $GITHUB_ENV
        env:
          BRANCH: ${{ github.head_ref }}

      - name: Save release version as output
        id: version
        run: echo "::set-output name=version::$RELEASE_VERSION"
        env:
          RELEASE_VERSION: ${{ env.RELEASE_VERSION }}


  generate-changelog:
    needs: parse-version
    runs-on: ubuntu-latest
    steps:
      - name: Find Pull Request
        uses: juliangruber/find-pull-request-action@v1
        id: find-pull-request
        with:
          branch: release/${{ needs.parse-version.outputs.version }}

      - name: Setup Node
        uses: actions/setup-node@v3

      - name: Get latest release for Changelog
        id: latest_release
        uses: cardinalby/git-get-release-action@v1
        env:
          GITHUB_TOKEN: ${{ github.token }}
        with:
          draft: false
          prerelease: false
          releaseNameRegEx: Insomnia .*
          repo: ${{github.repository}}

      - name: Run Changelog-generator script
        id: changelog
        shell: bash
        run: |
          npx @kong/changelog-generator generate \
            --owner ${OWNER} \
            --repo insomnia \
            --base ${{ steps.latest_release.outputs.tag_name }} \
            --head ${HEAD} \
            --releaseName "${RELEASE_NAME}" > ./temp_changelog.out

          npx @kong/changelog-generator generate \
            --owner ${OWNER} \
            --repo insomnia \
            --base ${{ steps.latest_release.outputs.tag_name }} \
            --head ${HEAD} \
            --releaseName "${RELEASE_NAME}" --onlyShowMissing > ./temp_changelog_missing.out
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          OWNER: ${{ github.repository_owner }}
          HEAD: release/${{ needs.parse-version.outputs.version }}
          RELEASE_NAME: ${{ needs.parse-version.outputs.version }}

      - name: Read changelog
        id: read-changelog
        uses: juliangruber/read-file-action@v1
        with:
          path: ./temp_changelog.out

      - name: Read changelog (missing)
        id: read-changelog-missing
        uses: juliangruber/read-file-action@v1
        with:
          path: ./temp_changelog_missing.out

      - name: Set timestamp
        id: timestamp
        run: echo "::set-output name=timestamp::$(date --iso-8601=seconds)"

      - name: Find Comment
        uses: peter-evans/find-comment@v1
        id: find-comment
        with:
          issue-number: ${{ steps.find-pull-request.outputs.number }}
          body-includes: Auto-generated changelog

      - name: Create or update comment
        uses: peter-evans/create-or-update-comment@v1
        with:
          comment-id: ${{ steps.find-comment.outputs.comment-id }}
          issue-number: ${{ steps.find-pull-request.outputs.number }}
          body: |
            Auto-generated changelog:
            ```
            ${{ steps.read-changelog.outputs.content }}
            ```

            PRs missing a `changelog(<type>): <description>`:
            ```
            ${{ steps.read-changelog-missing.outputs.content }}
            ```
            Last Updated: ${{ steps.timestamp.outputs.timestamp }}

            You can download this release header image 🌌 [here](https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }})

            To re-trigger:
            - Via UI, run [Generate Changelog workflow](https://github.com/${{ github.repository }}/actions/workflows/changelog.yml) (`version`): `${{ needs.parse-version.outputs.version }}`
            - Via CLI, run [Github CLI](https://cli.github.com/):
            ```bash
            gh workflow run changelog.yml -f version=${{ needs.parse-version.outputs.version }} --repo ${{ github.repository }}
            ```
          edit-mode: replace

  generate-changelog-image:
    needs: parse-version
    runs-on: ubuntu-latest
    steps:
      - name: Checkout branch
        uses: actions/checkout@v3
        with:
          ref: release/${{ needs.parse-version.outputs.version }}

      - name: Setup Node
        uses: actions/setup-node@v3
        with:
          node-version-file: '.nvmrc'

      - name: Bootstrap packages
        run: npm run bootstrap

      - name: Run changelog-image
        run: npm run changelog-image

      - name: Upload artifacts
        uses: actions/upload-artifact@v3
        with:
          if-no-files-found: error
          name: changelog-image-${{ needs.parse-version.outputs.version }}
          path: |
            *.svg
