# Triggers after the layered build has finished, taking the artifact and running Playwright on it
name: End to End Tests
on:
    workflow_run:
        workflows: ["Element Web - Build"]
        types:
            - completed

concurrency:
    group: ${{ github.workflow }}-${{ github.event.workflow_run.head_branch || github.run_id }}
    cancel-in-progress: ${{ github.event.workflow_run.event == 'pull_request' }}

jobs:
    prepare:
        name: Prepare
        if: github.event.workflow_run.conclusion == 'success'
        runs-on: ubuntu-latest
        permissions:
            statuses: write
        steps:
            # We create the status here and then update it to success/failure in the `report` stage
            # This provides an easy link to this workflow_run from the PR before the tests are done.
            - uses: Sibz/github-status-action@faaa4d96fecf273bd762985e0e7f9f933c774918 # v1
              with:
                  authToken: ${{ secrets.GITHUB_TOKEN }}
                  state: pending
                  context: ${{ github.workflow }} / end-to-end-tests
                  sha: ${{ github.event.workflow_run.head_sha }}
                  target_url: https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}

    tests:
        name: "Run Tests ${{ matrix.ci_node_index }}/${{ matrix.ci_node_total }}"
        needs: prepare
        runs-on: ubuntu-latest
        permissions:
            actions: read
            issues: read
            pull-requests: read
        environment: EndToEndTests
        strategy:
            fail-fast: false
            matrix:
                # Run 2 instances in Parallel
                ci_node_index: [0, 1]
                ci_node_total: [2]
        steps:
            - uses: browser-actions/setup-chrome@803ef6dfb4fdf22089c9563225d95e4a515820a0 # v1
            - run: echo "BROWSER_PATH=$(which chrome)" >> $GITHUB_ENV

            # There's a 'download artifact' action, but it hasn't been updated for the workflow_run action
            # (https://github.com/actions/download-artifact/issues/60) so instead we get this mess:
            - name: 📥 Download artifact
              uses: dawidd6/action-download-artifact@246dbf436b23d7c49e21a7ab8204ca9ecd1fe615 # v2
              with:
                  run_id: ${{ github.event.workflow_run.id }}
                  name: previewbuild
                  path: webapp

            # The workflow_run.head_sha is the sha of the head commit but the element-web was built using a simulated
            # merge commit - https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#pull_request
            # so use the sha from the tarball for the checkout of the tests
            # to make sure we get a matching set of code and tests.
            - name: Grab sha from webapp
              id: sha
              run: |
                  echo "sha=$(cat webapp/sha)" >> $GITHUB_OUTPUT

            - uses: actions/checkout@v4
              with:
                  # XXX: We're checking out untrusted code in a secure context
                  # We need to be careful to not trust anything this code outputs/may do
                  #
                  # Note that (in the absence of a `react-sdk-repository` input),
                  # we check out from the default repository, which is (for this workflow) the
                  # *target* repository for the pull request.
                  #
                  ref: ${{ steps.sha.outputs.sha }}
                  persist-credentials: false
                  path: matrix-react-sdk
                  repository: ${{ inputs.react-sdk-repository || github.repository }}

            - uses: actions/setup-node@v3
              with:
                  cache: "yarn"
                  cache-dependency-path: matrix-react-sdk/yarn.lock

            - name: Install dependencies
              working-directory: matrix-react-sdk
              run: yarn install --frozen-lockfile

            - name: Install Playwright browsers
              working-directory: matrix-react-sdk
              run: yarn playwright install --with-deps

            - name: Run Playwright tests
              uses: coactions/setup-xvfb@b6b4fcfb9f5a895edadc3bc76318fae0ac17c8b3 # v1
              with:
                  run: yarn playwright test --shard ${{ matrix.ci_node_index }}/${{ matrix.ci_node_total }}
                  working-directory: matrix-react-sdk

            - name: Upload blob report to GitHub Actions Artifacts
              if: always()
              uses: actions/upload-artifact@v3
              with:
                  name: all-blob-reports
                  path: matrix-react-sdk/blob-report
                  retention-days: 1

    report:
        name: Report results
        needs: tests
        runs-on: ubuntu-latest
        if: always()
        permissions:
            statuses: write
        steps:
            - uses: actions/checkout@v3

            - uses: actions/setup-node@v3
              with:
                  cache: "yarn"

            - name: Install dependencies
              run: yarn install --frozen-lockfile

            - name: Download blob reports from GitHub Actions Artifacts
              uses: actions/download-artifact@v3
              with:
                  name: all-blob-reports
                  path: all-blob-reports

            - name: Merge into HTML Report
              run: yarn playwright merge-reports --reporter=html,github ./all-blob-reports

            - name: Upload HTML report
              uses: actions/upload-artifact@v3
              with:
                  name: html-report--attempt-${{ github.run_attempt }}
                  path: playwright-report
                  retention-days: 14

            - uses: Sibz/github-status-action@faaa4d96fecf273bd762985e0e7f9f933c774918 # v1
              if: always()
              with:
                  authToken: ${{ secrets.GITHUB_TOKEN }}
                  state: ${{ needs.tests.result == 'success' && 'success' || 'failure' }}
                  context: ${{ github.workflow }} / end-to-end-tests
                  sha: ${{ github.event.workflow_run.head_sha }}
                  target_url: https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}