name: E2E Tests

on:
  workflow_call:
    inputs:
      ref:
        description: 'Git ref to checkout (branch, tag, or SHA). Defaults to the triggering ref.'
        type: string
        required: false
        default: ''
  workflow_dispatch:

concurrency:
  group: E2E Tests-${{ inputs.ref || github.ref }}
  cancel-in-progress: true

permissions:
  contents: read
  actions: read

jobs:
  suites:
    runs-on: ubuntu-latest
    timeout-minutes: 5
    outputs:
      list: ${{ steps.suites.outputs.list }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v7
        timeout-minutes: 1
        with:
          ref: ${{ inputs.ref || github.ref }}
          persist-credentials: false

      - name: Build the suite matrix
        id: suites
        working-directory: e2e
        run: |
          list=$(bash ./scripts/ci-matrix.sh)
          echo "list=$list" >> "$GITHUB_OUTPUT"

  build-app:
    runs-on: ubuntu-latest
    timeout-minutes: 30
    permissions:
      contents: read
      packages: write

    strategy:
      fail-fast: false
      matrix:
        variant: [plain, patched]

    name: build-app (${{ matrix.variant }})

    steps:
      - name: Checkout repository
        uses: actions/checkout@v7
        timeout-minutes: 1
        with:
          ref: ${{ inputs.ref || github.ref }}
          persist-credentials: false

      - name: Get vault secrets
        uses: hashicorp/vault-action@v4
        with:
          url: ${{ secrets.VAULT_HOST }}
          method: approle
          roleId: ${{ secrets.VAULT_ROLE_ID }}
          secretId: ${{ secrets.VAULT_SECRET_ID }}
          secrets:
            secrets/data/github packages_pat | PACKAGES_PAT

      # Nothing reverts these. The runner throws the checkout away.
      - name: Apply the e2e patches
        if: matrix.variant == 'patched'
        run: bash e2e/scripts/with-patches.sh

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v4
        timeout-minutes: 5

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v4
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build the app image
        uses: docker/build-push-action@v7
        timeout-minutes: 25
        with:
          context: ${{ github.workspace }}/code
          file: ${{ github.workspace }}/code/Dockerfile
          provenance: false
          build-args: |
            PACKAGES_USERNAME=${{ github.repository_owner }}
          secrets: |
            packages_pat=${{ env.PACKAGES_PAT }}
          tags: cleanuparr-e2e-app:${{ matrix.variant }}
          outputs: type=docker,dest=/tmp/app-image.tar
          # The GHA cache evicted these layers once the repo passed its 10 GB quota.
          # A failed cache write must not fail the build.
          cache-from: type=registry,ref=ghcr.io/cleanuparr/cleanuparr-e2e-cache:${{ matrix.variant }}
          cache-to: type=registry,ref=ghcr.io/cleanuparr/cleanuparr-e2e-cache:${{ matrix.variant }},mode=max,image-manifest=true,oci-mediatypes=true,ignore-error=true

      # gzip -1 beats letting upload-artifact deflate a layer tar this size.
      - name: Compress the image
        run: gzip -1 /tmp/app-image.tar

      - name: Upload the image
        uses: actions/upload-artifact@v7
        with:
          name: e2e-app-image-${{ matrix.variant }}
          path: /tmp/app-image.tar.gz
          retention-days: 1
          compression-level: 0

  e2e:
    needs: suites
    runs-on: ubuntu-latest
    timeout-minutes: 60

    strategy:
      fail-fast: false
      matrix:
        suite: ${{ fromJSON(needs.suites.outputs.list) }}

    name: e2e (${{ matrix.suite.name }})

    steps:
      - name: Checkout repository
        uses: actions/checkout@v7
        timeout-minutes: 1
        with:
          ref: ${{ inputs.ref || github.ref }}
          persist-credentials: false

      - name: Match container uid/gid to the runner user
        run: |
          echo "E2E_PUID=$(id -u)" >> "$GITHUB_ENV"
          echo "E2E_PGID=$(id -g)" >> "$GITHUB_ENV"

      - name: Start the stack
        working-directory: e2e
        run: make ${{ matrix.suite.stack-target }}

      - name: Setup Node.js
        uses: actions/setup-node@v7
        with:
          node-version: 26
          cache: 'npm'
          cache-dependency-path: e2e/package-lock.json

      - name: Install E2E dependencies
        working-directory: e2e
        run: npm ci

      - name: Resolve Playwright version
        id: playwright
        working-directory: e2e
        run: echo "version=$(node -p "require('@playwright/test/package.json').version")" >> "$GITHUB_OUTPUT"

      - name: Cache Playwright browsers
        uses: actions/cache@v6
        with:
          path: ~/.cache/ms-playwright
          key: ${{ runner.os }}-playwright-${{ steps.playwright.outputs.version }}

      - name: Report runner disk space
        run: df -h /

      - name: Install Playwright browsers
        working-directory: e2e
        timeout-minutes: 10
        env:
          DEBUG: pw:install
        run: npx playwright install --with-deps chromium

      - name: Wait for the app image
        timeout-minutes: 30
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          VARIANT: ${{ matrix.suite.image-variant }}
          RUN_JOBS: /repos/${{ github.repository }}/actions/runs/${{ github.run_id }}/jobs
          RUN_ARTIFACTS: /repos/${{ github.repository }}/actions/runs/${{ github.run_id }}/artifacts
        run: |
          set -euo pipefail
          artifact="e2e-app-image-$VARIANT"
          job="build-app ($VARIANT)"
          grace=12

          # The artifact appears only once build-app uploads it. Watch that job too,
          # so a build failure ends this leg instead of stalling it until the timeout.
          while :; do
            # Assigned, not piped into grep: under pipefail a grep that exits on the
            # first match can SIGPIPE gh, making a found artifact read as not found.
            id=$(gh api "$RUN_ARTIFACTS" --paginate \
              --jq ".artifacts[] | select(.name == \"$artifact\") | .id" || true)

            if [ -n "$id" ]; then
              break
            fi

            # A transient API error must not end the leg, so keep polling.
            # Under workflow_call the job is named "<caller job> / build-app (...)".
            conclusion=$(gh api "$RUN_JOBS" --paginate \
              --jq ".jobs[] | select(.name == \"$job\" or (.name | endswith(\" / $job\"))) | .conclusion" || true)

            case "$conclusion" in
              ''|null) ;;
              success)
                grace=$((grace - 1))
                if [ "$grace" -le 0 ]; then
                  echo "::error::$job succeeded but $artifact never appeared"
                  exit 1
                fi
                ;;
              *)
                echo "::error::$job concluded $conclusion, no image to run"
                exit 1
                ;;
            esac

            sleep 10
          done

      - name: Download the app image
        uses: actions/download-artifact@v8
        with:
          name: e2e-app-image-${{ matrix.suite.image-variant }}
          path: /tmp

      - name: Load the app image
        run: gunzip -c /tmp/app-image.tar.gz | docker load

      - name: Start the app
        working-directory: e2e
        env:
          APP_IMAGE: cleanuparr-e2e-app:${{ matrix.suite.image-variant }}
        run: make up-app

      - name: Run E2E tests
        working-directory: e2e
        timeout-minutes: ${{ matrix.suite.budget-minutes }}
        run: npx playwright test ${{ matrix.suite.projects }}

      - name: Summarize test timings
        if: always()
        working-directory: e2e
        run: |
          if [ -f test-results/results.json ]; then
            bash scripts/ci-timings.sh test-results/results.json >> "$GITHUB_STEP_SUMMARY"
          fi

      - name: Check the leg budget
        if: always()
        working-directory: e2e
        env:
          LEG: ${{ matrix.suite.name }}
          BUDGET: ${{ matrix.suite.budget-minutes }}
        run: |
          if [ ! -f test-results/results.json ]; then
            exit 0
          fi
          used=$(jq '.stats.duration / 60000 | floor' test-results/results.json)
          if [ "$used" -ge $((BUDGET * 4 / 5)) ]; then
            echo "::warning::$LEG used ${used}m of its ${BUDGET}m budget. Split it in e2e/scripts/ci-matrix.sh."
          fi

      - name: Dump service logs
        if: failure()
        working-directory: e2e
        run: |
          docker compose -f docker-compose.e2e.yml ps
          # A container can serve fine and still fail its check, so record what the check saw.
          docker compose -f docker-compose.e2e.yml ps -q | xargs -r docker inspect \
            --format '{{.Name}} {{with .State.Health}}{{.Status}}{{range .Log}} [exit {{.ExitCode}}] {{.Output}}{{end}}{{end}}'
          docker compose -f docker-compose.e2e.yml logs --no-color --tail 500

      - name: Upload test results
        uses: actions/upload-artifact@v7
        if: always()
        with:
          name: e2e-test-results-${{ matrix.suite.name }}
          path: |
            e2e/playwright-report/
            e2e/test-results/
          retention-days: 7

      - name: Stop services
        if: always()
        working-directory: e2e
        run: make down