name: CI

on:
  push:
    branches: [master]

jobs:
  check:
    name: Check, build and cache Nix flake
    runs-on: ubuntu-22.04
    steps:
      - uses: actions/checkout@v4
      - uses: cachix/install-nix-action@v27
        with:
          # Gitea will supply a token in GITHUB_TOKEN, which this action will
          # try to pass to Nix when downloading from GitHub
          github_access_token: ${{ secrets.GH_PULL_TOKEN }}
          extra_nix_config: |
            # Make sure we're using sandbox
            sandbox-fallback = false
            # Big C++ projects fill up memory...
            cores = 6

            extra-substituters = https://nix-cache.nul.ie/main
            extra-trusted-public-keys = main:mMChkG8LwXrFirVfudqjSHasK1jV31OVElYD3eImYl8=

      # - name: Check flake
      #   run: nix flake check --no-build
      - name: Build the world
        id: build
        run: |
          # path=$(nix build --no-link .#ci.x86_64-linux --json | jq -r .[0].outputs.out)
          # nix build --no-link .#windowtolayer --json
          path=$(nix build --no-link .#windowtolayer --json | jq -r .[0].outputs.out)
          echo "path=$path" >> "$GITHUB_OUTPUT"
          # cat "$GITHUB_OUTPUT"

      - name: Push to cache
        run: |
          ci/push-to-cache.sh "${{ steps.build.outputs.path }}"