repo-banner.yml

name: GitHub Repo Banner

on:
  pull_request:
    types: [opened, synchronize, reopened]

jobs:
  generate:
    runs-on: ubuntu-latest
    concurrency:
      group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
      cancel-in-progress: true

    permissions:
      # Give the default GITHUB_TOKEN write permission to commit and push the
      # added or changed files to the repository.
      contents: write

    steps:
    - uses: actions/checkout@v3

    - name: Fetch repo metadata
      id: metadata
      uses: ahmadnassri/action-metadata@v2

    - name: Format Repo Metadata
      id: meta
      run: |
        name="${{ steps.metadata.outputs.repository_name }}"
        type="Project"
        desc="${{ steps.metadata.outputs.repository_description }}"

        if [[ "${name}" == "terraform-*-provider" ]]; then
          echo "type=Terraform Provider" >> $GITHUB_OUTPUT
          echo "name=${name#terraform-}" >> $GITHUB_OUTPUT
        elif [[ "${name}" == "terraform-aws*" ]]; then
          echo "type=Terraform Module" >> $GITHUB_OUTPUT
          echo "name=${name#terraform-}" >> $GITHUB_OUTPUT
        elif [[ "${name}" == "github-action-*" ]]; then
          echo "type=GitHub Action" >> $GITHUB_OUTPUT
          echo "name=${name#github-action-}" >> $GITHUB_OUTPUT
        elif [[ "${name}" == "example-*" ]]; then
          echo "type=Example" >> $GITHUB_OUTPUT
          echo "name=${name#example-}" >> $GITHUB_OUTPUT
        elif [[ "${name}" == "infra-*" ]]; then
          echo "type=Infrastructure" >> $GITHUB_OUTPUT
          echo "name=${name#infra-}" >> $GITHUB_OUTPUT
        else
          echo "Repo type is indeterminable"
          echo "name=${name}" >> $GITHUB_OUTPUT
          echo "type=${type}" >> $GITHUB_OUTPUT
        fi

        if [[ "${desc}" == "null" ]]; then
          echo "desc=" >> $GITHUB_OUTPUT
        else
          # Only keep the first sentence
          echo "desc=${desc/.*}" >> $GITHUB_OUTPUT
        fi
        cat ${GITHUB_OUTPUT}

    - name: Generate banner image
      id: screenshot
      uses: cloudposse-github-actions/screenshot@main
      with:
        url: "file://${{github.workspace}}/banner/index.html"
        output: "banner/image.png"
        customizations: |
          "#name": "${{ steps.meta.outputs.name }}"
          "#type": "${{ steps.meta.outputs.type }}"
          "#desc": "${{ steps.meta.outputs.desc }}"
        viewportWidth: 1280
        viewportHeight: 320
        omitBackground: true

    - uses: stefanzweifel/git-auto-commit-action@v4
      name: Commit artifact
      id: auto-commit
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      with:
        commit_message: "chore: update repo banner image"
        commit_user_name: screenshot-action 📷
        commit_user_email: actions@github.com
        commit_author: screenshot-action 📷 <actions@github.com>
        file_pattern: 'banner/*.png'

    - name: Add Image to Step Summary
      if: steps.auto-commit.outputs.changes_detected == 'true'
      run: |
        echo "## Generated Screenshot" >> $GITHUB_STEP_SUMMARY
        echo "![Generated Screenshot](https://github.com/${{ github.repository }}/blob/${{ steps.auto-commit.outputs.commit_hash }}/${{ steps.screenshot.outputs.file }}?raw=true)" >> $GITHUB_STEP_SUMMARY

    - name: No changes
      if: steps.auto-commit.outputs.changes_detected == 'false'
      run: |
        echo "No changes to screenshot" >> $GITHUB_STEP_SUMMARY