name: Main CI Pipeline

on:
  pull_request:
    branches: ["main"]
  merge_group:
    branches: ["main"]
    types: [checks_requested]
  push:
    branches: ["main"]

permissions:
  contents: write
  pull-requests: write
  checks: write
  statuses: write

concurrency:
  group: main-ci-${{ github.head_ref || github.run_id }}
  cancel-in-progress: true

jobs:
  # Check which paths were changed to determine which tests to run
  check-changes:
    name: Check Changed Files
    runs-on: ubuntu-latest
    outputs:
      api-changed: ${{ steps.changes.outputs.api }}
      web-changed: ${{ steps.changes.outputs.web }}
      vdb-changed: ${{ steps.changes.outputs.vdb }}
      migration-changed: ${{ steps.changes.outputs.migration }}
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - uses: dorny/paths-filter@fbd0ab8f3e69293af611ebaee6363fc25e6d187d # v4.0.1
        id: changes
        with:
          filters: |
            api:
              - 'api/**'
              - 'docker/**'
              - '.github/workflows/api-tests.yml'
            web:
              - 'web/**'
              - '.github/workflows/web-tests.yml'
              - '.github/actions/setup-web/**'
            vdb:
              - 'api/core/rag/datasource/**'
              - 'docker/**'
              - '.github/workflows/vdb-tests.yml'
              - 'api/uv.lock'
              - 'api/pyproject.toml'
            migration:
              - 'api/migrations/**'
              - '.github/workflows/db-migration-test.yml'

  # Run tests in parallel while always emitting stable required checks.
  api-tests-run:
    name: Run API Tests
    needs: check-changes
    if: needs.check-changes.outputs.api-changed == 'true'
    uses: ./.github/workflows/api-tests.yml
    secrets: inherit

  api-tests-skip:
    name: Skip API Tests
    needs: check-changes
    if: needs.check-changes.outputs.api-changed != 'true'
    runs-on: ubuntu-latest
    steps:
      - name: Report skipped API tests
        run: echo "No API-related changes detected; skipping API tests."

  api-tests:
    name: API Tests
    if: ${{ always() }}
    needs:
      - check-changes
      - api-tests-run
      - api-tests-skip
    runs-on: ubuntu-latest
    steps:
      - name: Finalize API Tests status
        env:
          TESTS_CHANGED: ${{ needs.check-changes.outputs.api-changed }}
          RUN_RESULT: ${{ needs.api-tests-run.result }}
          SKIP_RESULT: ${{ needs.api-tests-skip.result }}
        run: |
          if [[ "$TESTS_CHANGED" == 'true' ]]; then
            if [[ "$RUN_RESULT" == 'success' ]]; then
              echo "API tests ran successfully."
              exit 0
            fi

            echo "API tests were required but finished with result: $RUN_RESULT" >&2
            exit 1
          fi

          if [[ "$SKIP_RESULT" == 'success' ]]; then
            echo "API tests were skipped because no API-related files changed."
            exit 0
          fi

          echo "API tests were not required, but the skip job finished with result: $SKIP_RESULT" >&2
          exit 1

  web-tests-run:
    name: Run Web Tests
    needs: check-changes
    if: needs.check-changes.outputs.web-changed == 'true'
    uses: ./.github/workflows/web-tests.yml
    secrets: inherit

  web-tests-skip:
    name: Skip Web Tests
    needs: check-changes
    if: needs.check-changes.outputs.web-changed != 'true'
    runs-on: ubuntu-latest
    steps:
      - name: Report skipped web tests
        run: echo "No web-related changes detected; skipping web tests."

  web-tests:
    name: Web Tests
    if: ${{ always() }}
    needs:
      - check-changes
      - web-tests-run
      - web-tests-skip
    runs-on: ubuntu-latest
    steps:
      - name: Finalize Web Tests status
        env:
          TESTS_CHANGED: ${{ needs.check-changes.outputs.web-changed }}
          RUN_RESULT: ${{ needs.web-tests-run.result }}
          SKIP_RESULT: ${{ needs.web-tests-skip.result }}
        run: |
          if [[ "$TESTS_CHANGED" == 'true' ]]; then
            if [[ "$RUN_RESULT" == 'success' ]]; then
              echo "Web tests ran successfully."
              exit 0
            fi

            echo "Web tests were required but finished with result: $RUN_RESULT" >&2
            exit 1
          fi

          if [[ "$SKIP_RESULT" == 'success' ]]; then
            echo "Web tests were skipped because no web-related files changed."
            exit 0
          fi

          echo "Web tests were not required, but the skip job finished with result: $SKIP_RESULT" >&2
          exit 1

  style-check:
    name: Style Check
    uses: ./.github/workflows/style.yml

  vdb-tests-run:
    name: Run VDB Tests
    needs: check-changes
    if: needs.check-changes.outputs.vdb-changed == 'true'
    uses: ./.github/workflows/vdb-tests.yml

  vdb-tests-skip:
    name: Skip VDB Tests
    needs: check-changes
    if: needs.check-changes.outputs.vdb-changed != 'true'
    runs-on: ubuntu-latest
    steps:
      - name: Report skipped VDB tests
        run: echo "No VDB-related changes detected; skipping VDB tests."

  vdb-tests:
    name: VDB Tests
    if: ${{ always() }}
    needs:
      - check-changes
      - vdb-tests-run
      - vdb-tests-skip
    runs-on: ubuntu-latest
    steps:
      - name: Finalize VDB Tests status
        env:
          TESTS_CHANGED: ${{ needs.check-changes.outputs.vdb-changed }}
          RUN_RESULT: ${{ needs.vdb-tests-run.result }}
          SKIP_RESULT: ${{ needs.vdb-tests-skip.result }}
        run: |
          if [[ "$TESTS_CHANGED" == 'true' ]]; then
            if [[ "$RUN_RESULT" == 'success' ]]; then
              echo "VDB tests ran successfully."
              exit 0
            fi

            echo "VDB tests were required but finished with result: $RUN_RESULT" >&2
            exit 1
          fi

          if [[ "$SKIP_RESULT" == 'success' ]]; then
            echo "VDB tests were skipped because no VDB-related files changed."
            exit 0
          fi

          echo "VDB tests were not required, but the skip job finished with result: $SKIP_RESULT" >&2
          exit 1

  db-migration-test-run:
    name: Run DB Migration Test
    needs: check-changes
    if: needs.check-changes.outputs.migration-changed == 'true'
    uses: ./.github/workflows/db-migration-test.yml

  db-migration-test-skip:
    name: Skip DB Migration Test
    needs: check-changes
    if: needs.check-changes.outputs.migration-changed != 'true'
    runs-on: ubuntu-latest
    steps:
      - name: Report skipped DB migration tests
        run: echo "No migration-related changes detected; skipping DB migration tests."

  db-migration-test:
    name: DB Migration Test
    if: ${{ always() }}
    needs:
      - check-changes
      - db-migration-test-run
      - db-migration-test-skip
    runs-on: ubuntu-latest
    steps:
      - name: Finalize DB Migration Test status
        env:
          TESTS_CHANGED: ${{ needs.check-changes.outputs.migration-changed }}
          RUN_RESULT: ${{ needs.db-migration-test-run.result }}
          SKIP_RESULT: ${{ needs.db-migration-test-skip.result }}
        run: |
          if [[ "$TESTS_CHANGED" == 'true' ]]; then
            if [[ "$RUN_RESULT" == 'success' ]]; then
              echo "DB migration tests ran successfully."
              exit 0
            fi

            echo "DB migration tests were required but finished with result: $RUN_RESULT" >&2
            exit 1
          fi

          if [[ "$SKIP_RESULT" == 'success' ]]; then
            echo "DB migration tests were skipped because no migration-related files changed."
            exit 0
          fi

          echo "DB migration tests were not required, but the skip job finished with result: $SKIP_RESULT" >&2
          exit 1