name: Nix

on:
  push:
  workflow_dispatch:

jobs:
  build:
    runs-on: ubuntu-24.04
    steps:
      - name: Checkout the repository
        uses: actions/checkout@v2

      - name: Install nix
        uses: cachix/install-nix-action@v16


      # TODO: add a binary cache
      # - uses: cachix/cachix-action@v10
      #   with:
      #     name: YOURCACHE
      #     authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'


      - name: Check the flake
        run: nix flake check --accept-flake-config


      - name: Pre-build the system configuration
        run: nix build --accept-flake-config .

      - name: Print out the size of /nix/store
        run: du -sh /nix/store

      - name: Get the init.lua path
        run: |
          init_path=$(grep "init=" result/bin/nixvim-print-init | awk -F'=' '{print $2}')
          cp $init_path init.lua

      - name: Upload the artifact
        uses: actions/upload-artifact@v4
        with:
          name: neovim-configuration
          path: init.lua

      - name: Publish the init.lua to an orphan github branch
        run: |
          git config --global user.name github-actions
          git config --global user.email github-actions@github.com
          git checkout --orphan init-lua
          git rm -rf .
          git add init.lua
          git commit -m "Publish init.lua"
          git push --force origin init-lua

  check-formatting:
    runs-on: ubuntu-24.04
    steps:
      - name: Checkout the repository
        uses: actions/checkout@v2

      - name: Install nix
        uses: cachix/install-nix-action@v16

      - name: Check formatting (dont update)
        run: nix shell nixpkgs#alejandra -c alejandra -c .