issues.yml

name: issue created

on:
  issues:
    types: [edited, opened]

jobs:
  add_fact:
    name: add a new fact if appropriate
    runs-on: ubuntu-latest

    steps:
      # Rather than use a personal access token to interact with the project, we
      # can use this GitHub App. There's an API for exchanging app credentials
      # for a short-term token, and we use that API here.
      - name: get token
        uses: tibdex/github-app-token@v1
        id: app_token
        with:
          app_id: ${{ secrets.APP_ID }}
          installation_id: ${{ secrets.APP_INSTALLATION_ID }}
          private_key: ${{ secrets.APP_PRIVATE_KEY }}

      - uses: actions/checkout@v3
        with:
          token: ${{ steps.app_token.outputs.token }}
          ref: main

      - uses: actions/setup-node@v3
        with:
          node-version: 16
          cache: npm

      - name: install dependencies
        run: npm install --production

      - name: update files with new fact
        run: node addFact.js
        working-directory: ./.github/workflows

      - name: check for changes
        run: if git diff --exit-code --quiet; then echo "::set-output name=changes::no"; else echo "::set-output name=changes::yes"; fi
        id: diff

        # If anything changed, commit it.
      - name: change branches
        if: steps.diff.outputs.changes == 'yes'
        run: git checkout -b add-fact/${{ github.event.issue.number }}

      - name: commit changes
        if: steps.diff.outputs.changes == 'yes'
        uses: EndBug/add-and-commit@v9
        with:
          message: "adding fact; closes #${{ github.event.issue.number }}"
          # Force push because if this issue has been edited, then there's
          # already a branch with this name, but it refers to the prior edit so
          # we'll just... throw it away.
          push: "origin add-fact/${{ github.event.issue.number }} --force"
      
      - name: open pull request
        if: steps.diff.outputs.changes == 'yes'
        env:
          GH_TOKEN: ${{ steps.app_token.outputs.token }}
        run: |
          NUM=${{ github.event.issue.number }}
          BRANCH="add-fact/${{ github.event.issue.number }}"
          gh pr create \
            --title "Adding fact for #$NUM" \
            --body "This fact is being added automatically from the contents of #$NUM. Closes #$NUM."
          gh pr merge $BRANCH --auto --squash