name: E2E Tests (Staging)

on:
  # After staging deploy completes
  workflow_run:
    workflows: ["Main Deploy Workflow"]
    types: [completed]
    branches: [main]

  # Manual trigger with mode selection
  workflow_dispatch:
    inputs:
      mode:
        description: "Test mode"
        required: true
        default: "diff"
        type: choice
        options:
          - smoke # login only
          - diff  # diff-triggered
          - full  # all scripts

  # Nightly full suite
  schedule:
    - cron: "0 6 * * *" # 6am UTC daily

env:
  TEST_USER: ${{ secrets.STAGING_TEST_USER }}
  TEST_PASSWORD: ${{ secrets.STAGING_TEST_PASSWORD }}

jobs:
  e2e:
    # Only run after successful staging deploy, or on manual/schedule triggers
    if: >-
      github.event_name != 'workflow_run' ||
      github.event.workflow_run.conclusion == 'success'
    runs-on: ubuntu-latest
    timeout-minutes: 30
    defaults:
      run:
        working-directory: client

    steps:
      - uses: actions/checkout@v6
        with:
          fetch-depth: 0 # full history for diff-based test selection

      - uses: actions/setup-node@v5
        with:
          node-version: lts/*

      - name: Install dependencies
        run: npm ci

      - name: Install Playwright browsers
        run: npx playwright install --with-deps chromium

      - name: Determine test mode
        id: mode
        run: |
          if [[ "${{ github.event_name }}" == "schedule" ]]; then
            echo "mode=full" >> $GITHUB_OUTPUT
          elif [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
            echo "mode=${{ inputs.mode }}" >> $GITHUB_OUTPUT
          elif [[ "${{ github.event_name }}" == "workflow_run" ]]; then
            echo "mode=diff" >> $GITHUB_OUTPUT
          fi

      - name: Select tests
        id: select
        run: |
          MODE="${{ steps.mode.outputs.mode }}"
          if [[ "$MODE" == "smoke" ]]; then
            echo "files=e2e/scripts/login.spec.ts" >> $GITHUB_OUTPUT
          elif [[ "$MODE" == "full" ]]; then
            echo "files=e2e/scripts/" >> $GITHUB_OUTPUT
          else
            FILES=$(node e2e/select-tests.js HEAD~1)
            echo "files=${FILES:-e2e/scripts/login.spec.ts}" >> $GITHUB_OUTPUT
          fi

      - name: Run Playwright tests
        run: npx playwright test --config e2e/playwright.config.ts ${{ steps.select.outputs.files }}
        env:
          BASE_URL: https://app.staging.pangea.chat

      - name: Upload report
        uses: actions/upload-artifact@v4
        if: ${{ !cancelled() }}
        with:
          name: playwright-report-${{ github.run_id }}
          path: client/playwright-report/
          retention-days: 14

      - name: Post failure comment on triggering PR
        if: ${{ github.event_name == 'workflow_run' && failure() }}
        uses: actions/github-script@v7
        with:
          script: |
            const { data: commits } = await github.rest.repos.listCommits({
              owner: context.repo.owner,
              repo: context.repo.repo,
              per_page: 1,
            });
            const prs = await github.rest.repos.listPullRequestsAssociatedWithCommit({
              owner: context.repo.owner,
              repo: context.repo.repo,
              commit_sha: commits[0].sha,
            });
            if (prs.data.length > 0) {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: prs.data[0].number,
                body: `⚠️ **E2E tests failed** after staging deploy.\n\n[View run](${context.serverUrl}/${context.repo.owner}/${context.repo.repo}/actions/runs/${context.runId})`,
              });
            }