ci.yml

name: "CI"

# Single entry point for the test workflows. The `ci` job at the end is the only
# required status check on develop: it fails if any job failed, and skipped jobs
# (backend-only or frontend-only changes) do not block it.
on:
  push:
    branches:
      - master
      - develop
      - release
  pull_request:
  merge_group:

jobs:
  changes:
    runs-on: ubuntu-latest
    permissions:
      pull-requests: read
    outputs:
      frontend: ${{ steps.filter.outputs.frontend }}
      backend: ${{ steps.filter.outputs.backend }}
    steps:
      - id: filter
        env:
          GH_TOKEN: ${{ github.token }}
          GH_REPO: ${{ github.repository }}
          EVENT: ${{ github.event_name }}
          PR: ${{ github.event.pull_request.number }}
        run: |
          # only pull requests are narrowed down; pushes and merge queue entries run everything
          if [ "$EVENT" != "pull_request" ]; then
            echo "frontend=true" >> "$GITHUB_OUTPUT"
            echo "backend=true" >> "$GITHUB_OUTPUT"
            exit 0
          fi
          files=$(gh pr diff "$PR" --name-only)
          echo "$files"
          changed() { if echo "$files" | grep -Eq "$1"; then echo true; else echo false; fi; }
          echo "frontend=$(changed '^(frontend/|\.github/workflows/(ci|test_frontend)\.yml$)')" >> "$GITHUB_OUTPUT"
          echo "backend=$(changed '^(backend/|pom\.xml$|\.github/workflows/(ci|test_backend)\.yml$)')" >> "$GITHUB_OUTPUT"

  frontend:
    needs: changes
    if: needs.changes.outputs.frontend == 'true'
    uses: ./.github/workflows/test_frontend.yml

  backend:
    needs: changes
    if: needs.changes.outputs.backend == 'true'
    uses: ./.github/workflows/test_backend.yml

  e2e:
    uses: ./.github/workflows/test_cypress.yml

  ci:
    if: always()
    needs: [changes, frontend, backend, e2e]
    runs-on: ubuntu-latest
    steps:
      - name: fail if any job failed or was cancelled
        if: contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled')
        run: exit 1