{ target-os, stdenv, buildGoPackage, go, pkgs, fetchFromGitHub, openjdk, androidPkgs, composeXcodeWrapper, xcodewrapperArgs ? {} }:

with stdenv;

let
  platform = pkgs.callPackage ../platform.nix { inherit target-os; };
  gomobile = pkgs.callPackage ./gomobile { inherit (androidPkgs) platform-tools; inherit composeXcodeWrapper xcodewrapperArgs; };
  buildStatusGoDesktopLib = pkgs.callPackage ./build-desktop-status-go.nix { inherit buildGoPackage go pkgs xcodeWrapper; };
  buildStatusGoMobileLib = pkgs.callPackage ./build-mobile-status-go.nix { inherit buildGoPackage go gomobile pkgs xcodeWrapper; };
  extractStatusGoConfig = f: lib.last (lib.splitString "\n" (lib.fileContents f));
  owner = lib.fileContents ../../STATUS_GO_OWNER;
  version = extractStatusGoConfig ../../STATUS_GO_VERSION; # TODO: Simplify this path search with lib.locateDominatingFile
  sha256 = extractStatusGoConfig ../../STATUS_GO_SHA256;
  repo = "status-go";
  rev = version;
  goPackagePath = "github.com/${owner}/${repo}";
  src = fetchFromGitHub { inherit rev owner repo sha256; };

  mobileConfigs = {
    android = {
      name = "android";
      outputFileName = "status-go-${version}.aar";
      envVars = [
        "ANDROID_HOME=${androidPkgs.androidsdk}/libexec/android-sdk"
        "ANDROID_NDK_HOME=${androidPkgs.ndk-bundle}/libexec/android-sdk/ndk-bundle"
        "PATH=${lib.makeBinPath [ openjdk ]}:$PATH"
      ];
      gomobileExtraFlags = [];
    };
    ios = {
      name = "ios";
      outputFileName = "Statusgo.framework";
      envVars = [];
      gomobileExtraFlags = [ "-iosversion=8.0" ];
    };
  };
  hostConfigs = {
    darwin = {
      name = "macos";
      allTargets = [ status-go-packages.desktop status-go-packages.ios status-go-packages.android ];
    };
    linux = {
      name = "linux";
      allTargets = [ status-go-packages.desktop status-go-packages.android ];
    };
  };
  currentHostConfig = if isDarwin then hostConfigs.darwin else hostConfigs.linux;

  goBuildFlags = "-v";
  goBuildLdFlags = "-ldflags=-s";

  xcodeWrapper = composeXcodeWrapper xcodewrapperArgs;

  statusGoArgs = { inherit owner repo rev version goPackagePath src goBuildFlags goBuildLdFlags; };
  status-go-packages = {
    desktop = buildStatusGoDesktopLib (statusGoArgs // {
      outputFileName = "libstatus.a";
      hostSystem = hostPlatform.system;
      host = currentHostConfig.name;
    });

    android = buildStatusGoMobileLib (statusGoArgs // {
      host = mobileConfigs.android.name;
      config = mobileConfigs.android;
    });

    ios = buildStatusGoMobileLib (statusGoArgs // {
      host = mobileConfigs.ios.name;
      config = mobileConfigs.ios;
    });
  };

  packages = if target-os == "android" then [ status-go-packages.android ] else
             if target-os == "ios" then [ status-go-packages.ios ] else
             if target-os == "all" then currentHostConfig.allTargets else
             if platform.targetDesktop then [ status-go-packages.desktop ] else
             throw "Unexpected target platform ${target-os}";

in {
  inherit packages;

  shellHook =
    lib.optionalString platform.targetIOS ''
      # These variables are used by the iOS build preparation section in scripts/prepare-for-platform.sh
      export RCTSTATUS_FILEPATH=${status-go-packages.ios}/lib/Statusgo.framework
    '' +
    lib.optionalString platform.targetAndroid ''
      # These variables are used by the Status Android Gradle build script in android/build.gradle
      export STATUS_GO_ANDROID_LIBDIR=${status-go-packages.android}/lib
    '' +
    lib.optionalString platform.targetDesktop ''
      # These variables are used by the Status Desktop CMake build script in modules/react-native-status/desktop/CMakeLists.txt
      export STATUS_GO_DESKTOP_INCLUDEDIR=${status-go-packages.desktop}/include
      export STATUS_GO_DESKTOP_LIBDIR=${status-go-packages.desktop}/lib
    '';
}