# Each PR will visual-regression diff that help to check code is work as expect.

name: 👀 Visual Regression Diff Finish

on:
  workflow_run:
    workflows: ["👀 Visual Regression Diff Build"]
    types:
      - completed

permissions:
  contents: read

jobs:
  upstream-workflow-summary:
    name: upstream workflow summary
    runs-on: ubuntu-latest
    outputs:
      jobs: ${{ steps.visual_diff_build_job_status.outputs.result }}
      upstream-job-link: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.event.workflow_run.id }}/job/${{ steps.visual_diff_build_job_status.outputs.job-id }}
      build-status: ${{ steps.visual_diff_build_job_status.outputs.build-status }}
    steps:
      - name: summary jobs status
        uses: actions/github-script@v7
        id: visual_diff_build_job_status
        with:
          script: |
            const response = await github.rest.actions.listJobsForWorkflowRun({
              owner: context.repo.owner,
              repo: context.repo.repo,
              run_id: ${{ github.event.workflow_run.id }},
            });

            // { [name]: [conclusion] }, e.g. { 'test image': 'success' }
            const jobs = (response.data?.jobs ?? []).reduce((acc, job) => {
              if(job?.status === 'completed' && 'name' in job && 'conclusion' in job) {
                acc[job.name] = {
                  id: job.id,
                  status: job.conclusion,
                };
              }
              return acc;
            }, {});

            const total = Object.keys(jobs).length;
            if(total === 0) core.setFailed('no jobs found');

            // the name here must be the same as `jobs.xxx.{name}`
            console.log('visual-diff report job status: %s', jobs['visual-diff report'].status);

            // set output
            core.setOutput('job-id', jobs['visual-diff report'].id);
            core.setOutput('build-status', jobs['visual-diff report'].status);
            return jobs;

  download-visual-regression-report:
    name: download visual-regression report
    permissions:
      actions: read # for dawidd6/action-download-artifact to query and download artifacts
      issues: write  # for actions-cool/maintain-one-comment to modify or create issue comments
      pull-requests: write  # for actions-cool/maintain-one-comment to modify or create PR comments
      statuses: write
    runs-on: ubuntu-latest
    needs: [upstream-workflow-summary]
    steps:
      - uses: actions/checkout@v4
      - uses: oven-sh/setup-bun@v2

      # We need get persist-index first
      - name: download image snapshot artifact
        uses: dawidd6/action-download-artifact@v6
        with:
          workflow: ${{ github.event.workflow_run.workflow_id }}
          run_id: ${{ github.event.workflow_run.id }}
          name: visual-regression-diff-ref
          path: ./tmp

      # Save PR id to output
      - name: save PR id
        id: pr
        run: |
          pr_id=$(<tmp/visual-regression-pr-id.txt)
          if ! [[ "$pr_id" =~ ^[0-9]+$ ]]; then
            echo "Error: pr-id.txt does not contain a valid numeric PR id. Please check."
            exit 1
          fi
          echo "id=$pr_id" >> $GITHUB_OUTPUT

      # Download report artifact
      - name: download report artifact
        id: download_report
        if: ${{ needs.upstream-workflow-summary.outputs.build-status == 'success' || needs.upstream-workflow-summary.outputs.build-status == 'failure' }}
        uses: dawidd6/action-download-artifact@v6
        with:
          workflow: ${{ github.event.workflow_run.workflow_id }}
          run_id: ${{ github.event.workflow_run.id }}
          name: visual-regression-report
          path: ./tmp

      # unzip report and then upload them to oss
      - name: upload visual-regression report
        id: report
        env:
          ALI_OSS_AK_ID: ${{ secrets.ALI_OSS_AK_ID }}
          ALI_OSS_AK_SECRET: ${{ secrets.ALI_OSS_AK_SECRET }}
          PR_ID: ${{ steps.pr.outputs.id }}
        run: |
          mkdir ./visualRegressionReport
          tar -xzvf tmp/visualRegressionReport.tar.gz -C ./visualRegressionReport
          echo "✅ Uncompress Finished"

          rm package.json
          bun add ali-oss --no-save
          echo "✅ Install `ali-oss` Finished"

          echo "🤖 Uploading"
          node scripts/visual-regression/upload.js ./visualRegressionReport --ref=pr-$PR_ID
          echo "✅ Uploaded"

          delimiter="$(openssl rand -hex 8)"
          echo "content<<${delimiter}" >> "${GITHUB_OUTPUT}"
          echo "$(<visualRegressionReport/report.md)" >> "${GITHUB_OUTPUT}"
          echo "${delimiter}" >> "${GITHUB_OUTPUT}"

      - name: success comment
        uses: actions-cool/maintain-one-comment@v3
        if: ${{ steps.report.outcome == 'success' }}
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          body: |
            ${{ steps.report.outputs.content }}
            <!-- VISUAL_DIFF_REGRESSION_HOOK -->
          body-include: '<!-- VISUAL_DIFF_REGRESSION_HOOK -->'
          number: ${{ steps.pr.outputs.id }}

      - name: failed comment
        if: ${{ steps.download_report.outcome == 'failure' || steps.report.outcome == 'failure' || failure() }}
        uses: actions-cool/maintain-one-comment@v3
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          body: |
            ## Visual Regression Build for PR #${{ steps.pr.outputs.id }} Failed ❌
            Potential causes:
              - `upstream workflow` status: ${{ needs.upstream-workflow-summary.outputs.build-status }} [upstream job link](${{ needs.upstream-workflow-summary.outputs.upstream-job-link }})
              - `current workflow` summary:
                - `download report artifact` status: ${{ steps.download_report.outcome }}
                - `report upload` status: ${{ steps.report.outcome }}
                - workflow url: https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}
            <!-- VISUAL_DIFF_REGRESSION_HOOK -->
          body-include: '<!-- VISUAL_DIFF_REGRESSION_HOOK -->'
          number: ${{ steps.pr.outputs.id }}

      # Resync commit status. This will be also reset by `visual-regression-diff-approver`
      - name: Reset Commit Status
        uses: actions/github-script@v7
        if: ${{ steps.report.outcome == 'success' }}
        env:
          PR_ID: ${{ steps.pr.outputs.id }}
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const prResponse = await github.rest.pulls.get({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: process.env.PR_ID,
            });
            const prHeadSha = prResponse.data.head.sha;

            const fullContent = `${{ toJSON(steps.report.outputs.content) }}`;
            const hasVisualDiffSuccess = fullContent.includes('VISUAL_DIFF_SUCCESS');
            const hasVisualDiffFailed = fullContent.includes('VISUAL_DIFF_FAILED');

            const mergedStatus = hasVisualDiffSuccess ? 'success' : hasVisualDiffFailed ? 'failure' : 'pending';

            await github.rest.repos.createCommitStatus({
              owner: context.repo.owner,
              repo: context.repo.repo,
              sha: prHeadSha,
              state: mergedStatus,
              context: 'Visual Regression Diff Wait Approve',
              description: hasVisualDiffSuccess ? 'Visual diff check pass' : 'Visual diff check failed',
            });