server/flake.nix

{
  description = "Learning Pulse";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
  };

  outputs =
    { self
    , nixpkgs
    , maven
    , makeWrapper
    , stdenv
    , ...
    }:
    let
      overlays = [
        (final: prev: rec {
          jdk = prev."jdk22";
          maven = prev.maven.override { inherit jdk; };
        })
      ];

      supportedSystems = [
        "x86_64-linux"
        "aarch64-linux"
      ];

      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
        pkgs = import nixpkgs { inherit overlays system; };
      });

    in
    {
      packages = {
        learningpulse-discovery = stdenv.mkDerivation rec {
          pname = "gateway";
          version = "1.0";

          src = ./.;
          buildInputs = [ maven ];

          buildPhase = ''
            mvn --offline -Dmaven.repo.local=gateway package;
          '';

          installPhase = ''
            install -Dm644 target/${pname}-${version}.jar $out/share/java
          '';
        };
        devShells = forEachSupportedSystem ({ pkgs }: {
          default = pkgs.mkShell {
            packages = with pkgs; [
              jdk
              maven
            ];
          };
        });
      };
    };
}