generate-preview.yml

name: Generate asciinema preview gif

on:
  push:
    tags:
      - 'v*'

jobs:
  generate:
    runs-on: ubuntu-latest
    env:
      DEMO_MAGIC_INSTALL: /tmp/demo-magic
      TERM: xterm
    steps:
    # Checks-out the project under $GITHUB_WORKSPACE/git-gud
    - uses: actions/checkout@v2
      with:
        fetch-depth: 0
        path: git-gud

    - uses: actions/setup-python@v2
      with:
        python-version: '3.x'

    - uses: actions/setup-node@v1
      with:
        node-version: '14'

    - name: Set up packager-managed dependencies for gif build
      # demo-magic.sh requires [pv]
      run: |
        sudo apt-get update
        python -m pip install --upgrade pip
        pip install setuptools wheel twine
        pip install $GITHUB_WORKSPACE/git-gud
        pip install asciinema
        sudo apt-get install pv

    - name: Download demo-magic.sh from repository
      run: git clone --depth 1 https://github.com/paxtonhare/demo-magic.git $DEMO_MAGIC_INSTALL

    - name: Test functionality of preview commands
      run: |
        chmod +x $GITHUB_WORKSPACE/git-gud/previewgif.sh
        $GITHUB_WORKSPACE/git-gud/previewgif.sh $GITHUB_WORKSPACE/git-gud
    
    - name: Record to asciinema cast file (JSON)
      run: |
        python3 -m asciinema rec -c "$GITHUB_WORKSPACE/git-gud/previewgif.sh $GITHUB_WORKSPACE/git-gud" -e SHELL,TERM,DEMO_MAGIC_INSTALL asciicast.json
        cp ./asciicast.json /tmp/build

    - name: Upload asciicast.json
      uses: actions/upload-artifact@v2
      with:
        name: asciicast.json
        path: /tmp/build/asciicast.json

    - name: Use dgzlopes/asciicast-to-gif-action@v1.0
      uses: dgzlopes/asciicast-to-gif-action@v1.0
      with:
        input: asciicast.json
        output: preview.gif

    - name: Move preview.gif to build
      run: |
        mkdir /tmp/build
        cp ./preview.gif /tmp/build

    - name: Upload preview.gif
      uses: actions/upload-artifact@v2
      with:
        name: preview.gif
        path: /tmp/build/preview.gif

  create-pr:
    runs-on: ubuntu-latest
    env:
      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
    needs: generate
    steps:
      - uses: actions/checkout@v2
        with:
          fetch-depth: 0

      - name: Download artifacts
        uses: actions/download-artifact@v2
        with:
          name: preview.gif

      - name: Set tag
        id: vars
        run: |
          echo ::set-output name=tag::$(git describe --tags)

      - name: Create Pull Request
        uses: peter-evans/create-pull-request@v3
        with:
          base: ascii-tagbranch
          commit-message: Automated update of preview.gif
          title: Updated preview.gif by create-pull-request@v3 action
          branch: create-pull-request/previewgif-${{ steps.vars.outputs.tag }}