name: Build

on:
  push:
    branches:
      - main
      - 'test-*'
  pull_request:

jobs:
  # Job to find all hosts that should be built
  get-hosts:
    runs-on: ubuntu-latest
    container: catthehacker/ubuntu:act-24.04
    outputs:
      hosts: ${{ steps.set-hosts.outputs.hosts }}
    steps:
      - uses: actions/checkout@v4
      - name: Install Nix
        uses: cachix/install-nix-action@v27
      - id: set-hosts
        run: |
          # Extract host names from nixosConfigurations
          HOSTS=$(nix eval .#nixosConfigurations --apply "builtins.attrNames" --json)
          echo "hosts=$HOSTS" >> $GITHUB_OUTPUT

  build:
    needs: get-hosts
    runs-on: ubuntu-latest
    container: catthehacker/ubuntu:act-24.04
    strategy:
      fail-fast: false
      matrix:
        host: ${{ fromJson(needs.get-hosts.outputs.hosts) }}
    steps:
      - uses: actions/checkout@v4
      - name: Install Nix
        uses: cachix/install-nix-action@v27
      - name: Build NixOS configuration
        run: nix build .#nixosConfigurations.${{ matrix.host }}.config.system.build.toplevel