name: Trigger actions on PR comments

on:
  issue_comment:
    types: [created]

permissions:
  contents: write
  pull-requests: write
  issues: write

jobs:
  fix-all:
    if: |
      github.event.issue.pull_request != null &&
      github.event.comment.body == '/fix-all' &&
      (
        github.event.comment.author_association == 'OWNER' ||
        github.event.comment.author_association == 'MEMBER' ||
        (github.event.comment.user != null && github.event.comment.user.login == github.event.issue.user.login)
      )
    runs-on: ubuntu-latest

    steps:
      - name: Post acknowledgment comment
        uses: actions/github-script@v8
        with:
          script: |
            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
              body: '🤖 Command `/fix-all` received. Running…'
            });

      - name: Get PR details
        uses: actions/github-script@v8
        id: pr
        with:
          script: |
            const pr = await github.rest.pulls.get({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: context.issue.number
            });

            if (pr.data.state !== 'open') {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                body: '⚠️ Command `/fix-all` can only be run on open pull requests.'
              });
              core.setFailed('PR is not open');
              return;
            }

            return pr.data.head;

      - name: Checkout PR branch
        uses: actions/checkout@v5
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          repository: ${{ fromJSON(steps.pr.outputs.result).repo.full_name }}
          ref: ${{ fromJSON(steps.pr.outputs.result).ref }}

      - name: Use Composer cache
        id: composer-cache
        uses: actions/cache@v4
        with:
          path: vendor
          key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}
          restore-keys: |
            ${{ runner.os }}-php-

      - name: Run Composer install
        run: composer install --prefer-dist --no-progress
        if: steps.composer-cache.outputs.cache-hit != 'true'

      - name: Uses Node.js
        uses: actions/setup-node@v5
        with:
          node-version: lts/*
          cache: npm

      - run: npm ci

      - name: Run make fix-all
        id: fix
        run: |
          set -e
          make fix-all || {
            echo "make_failed=true" >> $GITHUB_OUTPUT
            exit 1
          }
          echo "make_failed=false" >> $GITHUB_OUTPUT

      - name: Commit and push changes
        id: commit
        if: success()
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          git add -A
          if git diff --cached --quiet; then
            echo "no_changes=true" >> $GITHUB_OUTPUT
            echo "No changes to commit."
          else
            echo "no_changes=false" >> $GITHUB_OUTPUT

            git config user.name "github-actions[bot]"
            git config user.email "41898282+github-actions[bot]@users.noreply.github.com"

            # Get PR info from the base repository
            PR_JSON=$(gh pr view ${{ github.event.issue.number }} --repo ${{ github.repository }} --json headRepository,headRefName,maintainerCanModify)
            HEAD_REPO=$(echo "$PR_JSON" | jq -r '.headRepository.nameWithOwner')
            HEAD_BRANCH=$(echo "$PR_JSON" | jq -r '.headRefName')
            CAN_MODIFY=$(echo "$PR_JSON" | jq -r '.maintainerCanModify')

            echo "Head repo: $HEAD_REPO"
            echo "Head branch: $HEAD_BRANCH"
            echo "Maintainer can modify: $CAN_MODIFY"

            # Create commit
            git commit -m "chore: make fix-all"
            COMMIT_SHA=$(git rev-parse HEAD)
            echo "commit_sha=$COMMIT_SHA" >> $GITHUB_OUTPUT

            # Try to push
            if git push https://x-access-token:${GH_TOKEN}@github.com/${HEAD_REPO}.git HEAD:${HEAD_BRANCH}; then
              echo "pushed=true" >> $GITHUB_OUTPUT
              echo "Successfully pushed to $HEAD_REPO"
            else
              echo "pushed=false" >> $GITHUB_OUTPUT
              echo "Failed to push!"
              exit 1
            fi
          fi

      - name: Post completion comment
        uses: actions/github-script@v8
        if: always()
        with:
          script: |
            const makeFailed = '${{ steps.fix.outputs.make_failed }}' === 'true';
            const noChanges = '${{ steps.commit.outputs.no_changes || 'false' }}' === 'true';
            const pushed = '${{ steps.commit.outputs.pushed || 'false' }}' === 'true';
            const commitSha = '${{ steps.commit.outputs.commit_sha }}';
            const jobStatus = '${{ job.status }}';

            let message;
            if (jobStatus === 'success') {
              if (noChanges) {
                message = '✅ Command `/fix-all` completed with no change.';
              } else if (pushed) {
                message = `🔧 Command \`/fix-all\` made some fixes and committed as ${commitSha}`;
              } else {
                // Should not happen
                message = 'ℹ️ Command `/fix-all` completed, but strangely.';
              }
            } else if (makeFailed) {
              message = `❌ Command \`/fix-all\` failed. Check the [workflow run](${context.payload.repository.html_url}/actions/runs/${context.runId}) for details.`;
            } else {
              message = `⚠️ Command \`/fix-all\` ran successfully, but changes could not be pushed.\n\n`;
              message += `* Please check that your PR settings “Allow edits from maintainers” is enabled.\n`;
              message += `* Or run \`make fix-all\` locally and push to your branch.`;
            }

            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
              body: message
            });