# Check the report passed or developer confirmed the diff

name: 🤖 Visual Regression Diff Approval

# on comment event
on:
  issue_comment:
    types: [created, edited, deleted]

permissions:
  contents: read

jobs:
  approval:
    permissions:
      pull-requests: write
      statuses: write  # Allow to modfiy commit status
    name: Check Virtual Regression Approval
    if: github.event.issue.pull_request != ''
    runs-on: ubuntu-latest
    steps:
    # Check all the comments if contains `VISUAL_DIFF_SUCCESS` or `VISUAL_DIFF_FAILED`
    # Check if member of repo comment `Pass Visual Diff`
    # Return type: `success` or `failed` or `waiting`
    - name: Statistic Visual Diff Approval
      id: check_approval
      uses: actions/github-script@v7
      with:
        github-token: ${{ secrets.GITHUB_TOKEN }}
        script: |
          const issue_number = context.payload.issue.number;
          console.log('PR:', issue_number);

          const prResponse = await github.rest.pulls.get({
            owner: context.repo.owner,
            repo: context.repo.repo,
            pull_number: issue_number,
          });
          const prHeadSha = prResponse.data.head.sha;
          console.log('Head SHA:', prHeadSha);

          const { data: comments } = await github.rest.issues.listComments({
            owner: context.repo.owner,
            repo: context.repo.repo,
            issue_number: issue_number
          });

          console.log('Comments:', comments.length);

          let hasDiffSuccess = false;
          let hasDiffFailed = false;
          let hasMemberApprove = false;

          for (const comment of comments) {
            if (comment.body.includes('VISUAL_DIFF_SUCCESS')) {
              hasDiffSuccess = true;
            }
            if (comment.body.includes('VISUAL_DIFF_FAILED')) {
              hasDiffFailed = true;
            }

            // https://regex101.com/r/kLjudz/1
            const RE = /(?<=\>\s\[!IMPORTANT\].*?- \[ \])/s;
            if (
              comment.body.includes('- [x] Visual diff is acceptable') &&
              comment.body.match(RE) == null /** 检查 IMPORTANT 是否存在未勾选的 */
            ) {
              hasMemberApprove = true;
            }
          }

          console.log('hasDiffSuccess:', hasDiffSuccess);
          console.log('hasDiffFailed:', hasDiffFailed);
          console.log('hasMemberApprove:', hasMemberApprove);

          const diffPassed = hasDiffSuccess || (hasDiffFailed && hasMemberApprove);
          const mergedStatus = diffPassed ? 'success' : hasDiffFailed ? 'failure' : 'pending';
          console.log('Status:', mergedStatus);

          const { data: currentStatuses } = await github.rest.repos.listCommitStatusesForRef({
           owner: context.repo.owner,
           repo: context.repo.repo,
           ref: prHeadSha,
          });

          const currentStatus = currentStatuses.find(status => status.context === 'Visual Regression Diff Wait Approve');
          if (currentStatus && currentStatus.state === mergedStatus) {
            console.log('Status has not changed, no need to update:', currentStatus.state);
          } else {
            await github.rest.repos.createCommitStatus({
              owner: context.repo.owner,
              repo: context.repo.repo,
              sha: prHeadSha,
              state: mergedStatus,
              context: 'Visual Regression Diff Wait Approve',
              description: diffPassed ? 'Visual diff is acceptable' : 'Visual diff is not pass',
            });
          }

          if (hasDiffSuccess || (hasDiffFailed && hasMemberApprove)) {
            return 'success';
          } else if (hasDiffFailed) {
            return 'failed';
          } else {
            return 'waiting';
          }

    # Console check_approval status
    - name: Console Status
      run: echo "Result -> ${{ steps.check_approval.outputs.result }}"