# Copyright 2025 DigitalDragon <digitaldragon.club>
# 
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
#     http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

{
  description = "ArmorPaint flake";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
    armortools = {
      url = "github:armory3d/armortools";
      flake = false;
    };
  };

  outputs = { self, nixpkgs, armortools }: {
    
    packages.x86_64-linux.armorpaint =
      with import nixpkgs { system = "x86_64-linux"; };
      stdenv.mkDerivation rec {
        name = "ArmorPaint";
        src = armortools;
        patches = [ ./shebang+platform-fix.patch ];
        buildInputs = [
          # Required programs
          steam-run-free
          clang
        ];
        nativeBuildInputs = [
          # Main ArmorPaint dependencies
          xorg.libXinerama
          xorg.libXrandr
          alsa-lib
          xorg.libXi
          mesa
          libGL
          xorg.libXcursor
          udev
          gtk3
          # Additional dependencies
          glib
          pango
          harfbuzz
          cairo
          gdk-pixbuf
          atk
          libxkbcommon
        ];
        buildPhase = ''
          cd armorpaint
          export CPATH="${gtk3.dev}/include/gtk-3.0:${glib.dev}/include/glib-2.0:${pango.dev}/include/pango-1.0:${harfbuzz.dev}/include/harfbuzz:${cairo.dev}/include/cairo:${gdk-pixbuf.dev}/include/gdk-pixbuf-2.0:${atk.dev}/include/atk-1.0:${libxkbcommon.dev}/include:$CPATH"
          export KINC_PLATFORM=linux_x64
          steam-run ../armorcore/make --graphics opengl --run
        '';
        installPhase = ''
          mkdir $out/bin -p
          mv ./build/out $out/lib
          { echo "#!${pkgs.bash}/bin/bash -e"; \
            echo "export LD_LIBRARY_PATH=\$LD_LIBRARY_PATH:${pkgs.lib.makeLibraryPath nativeBuildInputs}"; \
            echo "export GSETTINGS_SCHEMA_DIR=${pkgs.gtk3}/share/gsettings-schemas/gtk+3-${pkgs.gtk3.version}/glib-2.0/schemas"; \
            echo "tempdir=/tmp/armorpaint-\$USER"; \
            echo "mkdir \$tempdir/data -p"; \
            echo "ln -sf $out/lib/ArmorPaint \$tempdir"; \
            echo "ln -sf $out/lib/data/* \$tempdir/data/"; \
            echo "exec \"\$tempdir/ArmorPaint\" \"\$@\""; \
          } > $out/bin/ArmorPaint
          chmod +x $out/bin/ArmorPaint
        '';
      };

    packages.x86_64-linux.default = self.packages.x86_64-linux.armorpaint;

  };
}