name: 'build backend container images (PR-filtered)'

on:
  pull_request:

concurrency:
  group: ci-backends-pr-${{ github.head_ref || github.ref }}-${{ github.repository }}
  cancel-in-progress: true

jobs:
  generate-matrix:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
      matrix-darwin: ${{ steps.set-matrix.outputs.matrix-darwin }}
      has-backends: ${{ steps.set-matrix.outputs.has-backends }}
      has-backends-darwin: ${{ steps.set-matrix.outputs.has-backends-darwin }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Setup Bun
        uses: oven-sh/setup-bun@v2

      - name: Install dependencies
        run: |
          bun add js-yaml
          bun add @octokit/core

      # filters the matrix in backend.yml
      - name: Filter matrix for changed backends
        id: set-matrix
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GITHUB_EVENT_PATH: ${{ github.event_path }}
        run: bun run scripts/changed-backends.js

  backend-jobs:
    needs: generate-matrix
    uses: ./.github/workflows/backend_build.yml
    if: needs.generate-matrix.outputs.has-backends == 'true'
    with:
      tag-latest: ${{ matrix.tag-latest }}
      tag-suffix: ${{ matrix.tag-suffix }}
      build-type: ${{ matrix.build-type }}
      cuda-major-version: ${{ matrix.cuda-major-version }}
      cuda-minor-version: ${{ matrix.cuda-minor-version }}
      platforms: ${{ matrix.platforms }}
      runs-on: ${{ matrix.runs-on }}
      base-image: ${{ matrix.base-image }}
      backend: ${{ matrix.backend }}
      dockerfile: ${{ matrix.dockerfile }}
      skip-drivers: ${{ matrix.skip-drivers }}
      context: ${{ matrix.context }}
      ubuntu-version: ${{ matrix.ubuntu-version }}
    secrets:
      quayUsername: ${{ secrets.LOCALAI_REGISTRY_USERNAME }}
      quayPassword: ${{ secrets.LOCALAI_REGISTRY_PASSWORD }}
    strategy:
      fail-fast: true
      matrix: ${{ fromJson(needs.generate-matrix.outputs.matrix) }}
  backend-jobs-darwin:
    needs: generate-matrix
    uses: ./.github/workflows/backend_build_darwin.yml
    if: needs.generate-matrix.outputs.has-backends-darwin == 'true'
    with:
      backend: ${{ matrix.backend }}
      build-type: ${{ matrix.build-type }}
      go-version: "1.24.x"
      tag-suffix: ${{ matrix.tag-suffix }}
      lang: ${{ matrix.lang || 'python' }}
      use-pip: ${{ matrix.backend == 'diffusers' }}
      runs-on: "macos-latest"
    secrets:
      quayUsername: ${{ secrets.LOCALAI_REGISTRY_USERNAME }}
      quayPassword: ${{ secrets.LOCALAI_REGISTRY_PASSWORD }}
    strategy:
      fail-fast: true
      matrix: ${{ fromJson(needs.generate-matrix.outputs.matrix-darwin) }}