unagi.yml

# This is a basic workflow to help you get started with Actions

name: Unagi

# Controls when the action will run. Triggers the workflow on push or pull request
# events but only for the master branch
on:
  pull_request:
    # Runs only newly opend or pushed updating commit (NOT reopened)
    # ref : https://qiita.com/osakiy/items/27d5382e41107de482a4
    types: [opened, synchronize]
    paths: '**.tex'

# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
  # This workflow contains a single job called "build"
  linter:
    # The type of runner that the job will run on
    runs-on: ubuntu-latest

    # Steps represent a sequence of tasks that will be executed as part of the job
    steps:
      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
      - uses: actions/checkout@v2
        with:
          # Fetch all branches
          fetch-depth: 0
      
      # Checkout unagi
      - name: Clone unagi
        uses: actions/checkout@v2
        with:
          repository: ritscc/unagi
          path: unagi
          token: ${{ secrets.ACCESS_TOKEN }}

      # Extract changed tex files list from git diff
      - name: Extract changed tex files
        id: target-files
        run: |
          targets=$(git diff origin/${GITHUB_BASE_REF}..origin/${GITHUB_HEAD_REF} \
          --diff-filter=AM --name-only -- '*.tex')
          echo ::set-output name=targets::${targets}

      # Execute Unagi core script to generate linter PR message
      - name: Unagi core
        id: unagi-core
        run: |
          message_file=/tmp/pr_message          
          unagi/core/unagi.sh ${{ steps.target-files.outputs.targets }} > ${message_file}
          echo ::set-output name=message::${message_file}

      # Update or Insert PR message
      - name: Upsert linter result comment on PR
        if: steps.unagi-core.outputs.message
        uses: marocchino/sticky-pull-request-comment@v1
        with:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          path: ${{ steps.unagi-core.outputs.message }}
      
      # Allow PR not appears 'no_entry_sign' and 'collision' in message
      - name: Check linter allowed PR or not
        run: |
          ! grep 'no_entry_sign' ${{ steps.unagi-core.outputs.message }} && \
          ! grep 'collision' ${{ steps.unagi-core.outputs.message }}
          exit $?