lint-fix-in-pr.yml

name: Run lint auto fix on a PR

on:
  issue_comment:
    types: [created]

jobs:
  lint-fix:
    if: ${{ github.event.issue.pull_request && contains('!lint-fix', github.event.comment.body) }}
    runs-on: ubuntu-latest
    permissions:
      id-token: write # Enable OIDC
      pull-requests: write
      contents: write
    steps:
    - name: Check that !lint-fix is at the start of a line
      shell: node {0}
      env:
        COMMENT: ${{ github.event.comment.body }}
      run: |
        const matcher = /^!lint-fix/m;
        const comment = process.env['COMMENT'];
        if (!comment.match(matcher)) {
          process.exit(1);
        }

    - name: Signal we're processing the comment
      uses: actions/github-script@v4
      with:
        script: |
          const {owner, repo} = context.issue
          github.reactions.createForIssueComment({
            owner,
            repo,
            comment_id: context.payload.comment.id,
            content: "eyes",
          });

    - name: Get PR branch
      id: branch
      uses: actions/github-script@v4
      with:
        result-encoding: string
        script: |
          const {owner, repo, number} = context.issue;
          const pr = await github.pulls.get({
            owner,
            repo,
            pull_number: number,
          });
          return pr.data.head.ref;
    - uses: actions/checkout@v4
      with:
        ref: ${{ steps.branch.outputs.result }}

    - name: Setup Node.js
      uses: actions/setup-node@v4
      with:
        node-version: 20.x
        cache: yarn

    - uses: chainguard-dev/actions/setup-gitsign@main
    - name: Autolint
      run: |
        yarn install --frozen-lockfile
        yarn lint-fix || true
    - name: Commit and push
      run: |
        git config user.name github-actions
        git config user.email github-actions@github.com
        git commit -am "fmt: automatic lint-fix"
        git push

    - name: Signal we're done
      if: always()
      uses: actions/github-script@v4
      with:
        script: |
          const {owner, repo} = context.issue
          github.reactions.createForIssueComment({
            owner,
            repo,
            comment_id: context.payload.comment.id,
            content: "rocket",
          });