# A safe, Rust-native binding for the SWORD library
# Copyright (C) 2025 Gregory Hellings
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; version 2.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
{
  description = "Greg's homepage";
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    flake-parts.url = "github:hercules-ci/flake-parts";
    flake-root.url = "github:srid/flake-root";
    hooks = {
      url = "github:cachix/git-hooks.nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    naersk = {
      url = "github:nix-community/naersk";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs =
    { flake-parts, ... }@inputs:
    flake-parts.lib.mkFlake { inherit inputs; } {
      imports = [
        inputs.flake-root.flakeModule
      ];
      flake = {
        # Universal things
        overlays.default = _final: _prev: { };
      };
      systems = [
        "x86_64-linux"
        "aarch64-linux"
        "aarch64-darwin"
      ];
      perSystem =
        { pkgs, self', ... }@inputs':
        let
          naersk-lib = pkgs.callPackage inputs.naersk { };
        in
        {
          _module.args.pkgs = import inputs.nixpkgs {
            inherit (inputs') system;
            overlays = [ ];
          };
          devShells.default = pkgs.mkShell rec {
            # These will just be available
            packages = with pkgs; [
              cargo
              clippy
              libgcc
              lldb
              rustc.llvm
              rustc
              rustfmt
              pre-commit

              sword
            ];

            buildInputs = self'.checks.pre-commit.enabledPackages;

            nativeBuildInputs = with pkgs; [
              pkg-config
            ];

            RUST_SRC_PATH = pkgs.rustPlatform.rustLibSrc;

            inherit (self'.checks.pre-commit) shellHook;
            #  This is also used when building with iced
            #  let
            #    lib_path = builtins.foldl' (a: b: "${a}:${b}/lib") "${pkgs.vulkan-loader}/lib" packages;
            #  in
            #  ''
            #    export LD_LIBRARY_PATH="${lib_path}"
            #  ''
          };

          checks = {
            pre-commit = inputs.hooks.lib.${inputs'.system}.run {
              src = ./.;
              excludes = [ ".*\\.txt" ];
              settings.rust = {
                check.cargoDeps = pkgs.rustPlatform.importCargoLock { lockFile = ./Cargo.lock; };
                cargoManifestPath = "./Cargo.toml";
              };
              hooks = {
                check-added-large-files.enable = true;
                check-case-conflicts.enable = true;
                check-merge-conflicts.enable = true;
                check-symlinks.enable = true;
                deadnix.enable = true;
                end-of-file-fixer.enable = true;
                fix-byte-order-marker.enable = true;
                mixed-line-endings.enable = true;
                nixfmt-rfc-style.enable = true;
                trim-trailing-whitespace.enable = true;
                # Rust hooks
                cargo-check.enable = true;
                clippy = {
                  enable = true;
                  extraPackages = [
                    pkgs.pkg-config
                    pkgs.sword
                  ];
                };
                rustfmt.enable = true;
              };
            };
          };

          # This is not special, this is just flakes
          packages = rec {
            default = rustpkg;
            rustpkg = naersk-lib.buildPackage {
              src = ./.;
              buildInputs = with pkgs; [
                sword
              ];
              nativeBuildInputs = with pkgs; [
                pkg-config
              ];
              doCheck = true;
            };
          };
        };
    };
}