{ pkgs ? import <nixpkgs> { config.allowUnfree = true; } }:

let
  androidSdk = pkgs.androidenv.composeAndroidPackages {
    buildToolsVersions = [ "35.0.0" "36.0.0" ];
    platformVersions = [ "35" "36" ];
    abiVersions = [ "x86_64" ];
    includeEmulator = true;
    includeSystemImages = true;
    systemImageTypes = [ "google_apis_playstore" ];
    includeNDK = false;
  };
in
pkgs.mkShell {
  buildInputs = with pkgs; [
    # --- Java ---
    # jetbrains.jdk
    jdk21

    # --- Kotlin ---
    kotlin
    gradle
    # kotlin-language-server

    # --- Android ---
    androidSdk.androidsdk
    android-tools
    # yarn

    # --- Web ---
    #    yarn
    # nodejs_24

    libGL
    xorg.libX11
    xorg.libXcursor
    xorg.libXext
    xorg.libXi
    xorg.libXrender
    fontconfig
    libxkbcommon
  ];

  shellHook = ''
    ln -sfn ${pkgs.jdk21}/lib/openjdk .jdk
    export ANDROID_HOME="${androidSdk.androidsdk}/libexec/android-sdk"
    export ANDROID_SDK_ROOT="${androidSdk.androidsdk}/libexec/android-sdk"
    export GRADLE_OPTS="-Dorg.gradle.java.installations.paths=${pkgs.jdk21}/lib/openjdk"
    export JAVA_HOME=${pkgs.jdk21}
    export JDK_PATH=${pkgs.jdk21}/lib/openjdk
    export PATH="$ANDROID_HOME/platform-tools:$ANDROID_HOME/tools/bin:$JAVA_HOME/bin:$PATH"
    export LD_LIBRARY_PATH=${pkgs.lib.makeLibraryPath [
      # pkgs.yarn
      # pkgs.nodejs_24
      pkgs.libGL
      pkgs.xorg.libX11
      pkgs.xorg.libXcursor
      pkgs.xorg.libXext
      pkgs.xorg.libXi
      pkgs.xorg.libXrender
      pkgs.fontconfig
      pkgs.libxkbcommon
    ]}

    echo "sdk.dir=$ANDROID_HOME" > local.properties

    echo "Kotlin Multiplatform Dev Environment Loaded!"
  '';
}