name: Nix CI

on:
  push:
    branches: [main, master]
  pull_request:
    branches: [main, master]
  workflow_dispatch:

jobs:
  nix-check:
    runs-on: ubuntu-latest
    permissions:
      contents: read
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Nix
        uses: DeterminateSystems/determinate-nix-action@v3

      - name: Setup Cachix binary cache
        uses: cachix/cachix-action@v14
        with:
          name: voicehub
          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'

      - name: Run nix flake check
        run: nix flake check

      - name: Build voicehub (validate hashes)
        run: nix build .#voicehub