name: check-visual
on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master

jobs:
  generate-visual-diffs:
    concurrency:
      group: ${{ github.head_ref || github.run_id }}
      cancel-in-progress: true

    timeout-minutes: 30
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - name: Evict playwright snapshot cache when pushing to master
        run: |
          if [ ${{ github.ref }} = "refs/heads/master" ]; then
            echo "Deleting ${{ runner.os }}-snapshots cache"
            gh extension install actions/gh-actions-cache
            gh actions-cache delete ${{ runner.os }}-snapshots --confirm || true
            echo "Done"
          fi
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - uses: actions/setup-node@v3
        with:
          node-version: "18.16.0"

      - name: Install dependencies
        run: npm ci

      - name: Cache Playwright browsers
        uses: actions/cache@v3
        id: playwright-dep-cache
        with:
          path: ~/.cache/ms-playwright
          key: ${{ runner.os }}-playwright-${{ hashFiles('package-lock.json') }}

      - name: Cache Playwright visual snapshots
        uses: actions/cache@v3
        id: playwright-snapshot-cache
        with:
          path: tests/visual/snapshots/**/*
          key: ${{ runner.os }}-snapshots

      - name: Install Playwright browsers
        if: steps.playwright-dep-cache.outputs.cache-hit != 'true'
        run: npx playwright install chromium firefox

      - name: Install Radicle binaries
        run: |
          mkdir -p tests/artifacts;
          ./scripts/install-binaries;
          ./scripts/install-binaries --show-path >> $GITHUB_PATH;

      - name: Run Playwright tests
        run: |
          if [ ${{ github.ref }} = "refs/heads/master" ]; then
            npm run test:e2e -- --project visual --update-snapshots || true;
          else
            npm run test:e2e -- --project visual || true;
          fi

      # We don't care about logs in visual snapshot tests, only the images.
      - name: Cleanup artifacts
        if: always()
        run: |
          shopt -s globstar;
          rm -rf tests/artifacts/**/*.log;

      - name: Upload artifacts
        id: artifacts
        uses: actions/upload-artifact@v3
        if: always()
        with:
          name: test-artifacts-${{ runner.os }}
          retention-days: 30
          if-no-files-found: "ignore"
          path: |
            tests/artifacts/**/*

      - name: Check for artifacts
        id: check_artifacts
        run: |
          if find ./tests/artifacts/**/*.png; then
            echo "present=true" >> $GITHUB_OUTPUT
          else
            echo "present=false" >> $GITHUB_OUTPUT
          fi

      - name: Find Comment
        if: github.ref != 'refs/heads/master'
        uses: peter-evans/find-comment@v2
        id: fc
        with:
          issue-number: ${{ github.event.pull_request.number }}
          comment-author: "github-actions[bot]"
          body-includes: "**Visual diff results for latest changes**"

      - name: Create or update comment
        if: github.ref != 'refs/heads/master' && steps.check_artifacts.outputs.present == 'false'
        uses: peter-evans/create-or-update-comment@v2
        with:
          comment-id: ${{ steps.fc.outputs.comment-id }}
          issue-number: ${{ github.event.pull_request.number }}
          body: |
            **Visual diff results for latest changes**

              ✅ There are no visual differences between `master` and this branch.
          edit-mode: replace

      - name: Create or update comment
        if: github.ref != 'refs/heads/master' && steps.check_artifacts.outputs.present == 'true'
        uses: peter-evans/create-or-update-comment@v2
        with:
          comment-id: ${{ steps.fc.outputs.comment-id }}
          issue-number: ${{ github.event.pull_request.number }}
          body: |
            **Visual diff results for latest changes**

            ⚠️ There are visual differences between `master` and this branch.
            👉 [Latest diff snapshots](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}).
            - [ ] The visual changes were intentional.

          edit-mode: replace