# flakes/lua-dev/flake.nix — Lua dev flake
{
  description = "Dev shell and template for Lua projects";
  inputs.nixpkgs.url = "github:NixOS/nixpkgs";

  outputs = {
    self,
    nixpkgs,
  }: let
    supportedSystems = [
      "x86_64-linux"
      "aarch64-linux"
      "aarch64-darwin"
    ];
    forEachSupportedSystem = f:
      nixpkgs.lib.genAttrs supportedSystems (
        system:
          f {
            pkgs = import nixpkgs {inherit system;};
          }
      );
  in {
    formatter = forEachSupportedSystem ({pkgs, ...}: pkgs.stylua);

    devShells = forEachSupportedSystem (
      {pkgs}: {
        default = pkgs.mkShell {
          buildInputs = with pkgs; [
            lua
            stylua
            nix
            alejandra
            statix
            deadnix
            git
            gnumake

            editorconfig-checker

            pre-commit
          ];
          shellHook = ''
            if [ ! -d .git ]; then
              git init
              echo "✓ Initialized git repository"
            fi

            echo "[lua-dev-template] Welcome to the Lua dev shell!"
            echo "Tools: lua, stylua, alejandra, statix, deadnix, git
            gnumake"
            echo "See README.md for usage."
          '';
        };
      }
    );

    packages = forEachSupportedSystem (
      {pkgs}: {
        default = pkgs.writeShellScriptBin "sample-lua-app" ''
          exec ${pkgs.lua}/bin/lua ${./src/main.lua}
        '';

        dev-helper = pkgs.writeShellScriptBin "dev-helper" ''
          echo "Lua Development Environment"
          echo "====================================="
          echo "Lua version: $(lua -v 2>&1 || echo not found)"
        '';
      }
    );

    apps = forEachSupportedSystem (
      {pkgs}: {
        default = {
          type = "app";
          program = pkgs.lib.getExe self.packages.${pkgs.system}.default;
        };
        dev-helper = {
          type = "app";
          program = pkgs.lib.getExe self.packages.${pkgs.system}.dev-helper;
        };
      }
    );

    templates.default = {
      path = ./.;
      description = "Minimal Lua project";
    };
  };
}