name: Build artifacts

on:
  workflow_dispatch:
  workflow_call:

jobs:
  build-artifacts:
    runs-on: ${{ matrix.systems.runner }}
    env:
      CLOSURE_FILE: magic-nix-cache.closure.xz
      CLOSURE_KEY: magic-nix-cache-${{ matrix.systems.runner }}-${{ github.sha }}
    strategy:
      matrix:
        systems:
          - nix-system: x86_64-linux
            system: X64-Linux
            runner: ubuntu-22.04
          - nix-system: aarch64-linux
            system: ARM64-Linux
            runner: namespace-profile-default-arm64
          - nix-system: x86_64-darwin
            system: X64-macOS
            runner: macos-12
          - nix-system: aarch64-darwin
            system: ARM64-macOS
            runner: macos-latest-xlarge
    permissions:
      contents: read
      id-token: write
    steps:
      - uses: actions/checkout@v3
      - uses: DeterminateSystems/nix-installer-action@main
      - uses: DeterminateSystems/magic-nix-cache-action@main

      - name: Build and cache dev shell
        run: |
          nix build ".#devShells.${{ matrix.systems.nix-system }}.default"

      - name: Build package and create closure
        run: |
          nix build .# -L --fallback && nix-store --export $(nix-store -qR ./result) | xz -9 > "${{ env.CLOSURE_FILE }}"

      - name: Upload a Build Artifact
        uses: actions/upload-artifact@v3.1.2
        with:
          # Artifact name
          name: magic-nix-cache-${{ matrix.systems.system }}
          path: ${{ env.CLOSURE_FILE }}
          retention-days: 1