status-react/nix/status-go/default.nix

{ config, lib, utils, stdenv, callPackage, mkShell,
  fetchFromGitHub, openjdk, androidPkgs }:

let
  inherit (stdenv.lib)
    catAttrs concatStrings concatStringsSep fileContents importJSON makeBinPath
    optional optionalString strings attrValues mapAttrs attrByPath
    traceValFn;

  envFlags = callPackage ../tools/envParser.nix { };
  enableNimbus = (attrByPath ["STATUS_GO_ENABLE_NIMBUS"] "0" envFlags) != "0";

  nimbus =
    if enableNimbus then callPackage ./nimbus { }
    else { wrappers-android = { }; };

  buildStatusGoDesktopLib = callPackage ./desktop { };
  buildStatusGoMobileLib = callPackage ./mobile { };

  srcData =
    # If config.status-im.status-go.src-override is defined, instruct Nix to use that path to build status-go
    if (attrByPath ["status-im" "status-go" "src-override"] "" config) != "" then rec {
        owner = "status-im";
        repo = "status-go";
        rev = "unknown";
        shortRev = "unknown";
        rawVersion = "develop";
        cleanVersion = rawVersion;
        goPackagePath = "github.com/${owner}/${repo}";
        src =
          let path = traceValFn (path: "Using local ${repo} sources from ${path}\n") config.status-im.status-go.src-override;
          in builtins.path { # We use builtins.path so that we can name the resulting derivation, otherwise the name would be taken from the checkout directory, which is outside of our control
            inherit path;
            name = "${repo}-source-${shortRev}";
            filter =
              # Keep this filter as restrictive as possible in order to avoid unnecessary rebuilds and limit closure size
              lib.mkFilter {
                root = path;
                include = [ ".*" ];
                exclude = [
                  ".*/[.]git.*" ".*[.]md" ".*[.]yml"
                  ".*/.*_test.go$" "_assets/.*" "build/.*"
                  ".*/.*LICENSE.*" ".*/CONTRIB.*" ".*/AUTHOR.*"
                ];
              };
          };
    } else
      # Otherwise grab it from the location defined by status-go-version.json
      let
        versionJSON = importJSON ../../status-go-version.json; # TODO: Simplify this path search with lib.locateDominatingFile
        sha256 = versionJSON.src-sha256;
      in rec {
        inherit (versionJSON) owner repo version;
        rev = versionJSON.commit-sha1;
        shortRev = strings.substring 0 7 rev;
        rawVersion = versionJSON.version;
        cleanVersion = utils.sanitizeVersion versionJSON.version;
        goPackagePath = "github.com/${owner}/${repo}";
        src = fetchFromGitHub { inherit rev owner repo sha256; name = "${repo}-${srcData.shortRev}-source"; };
      };

  mobileConfigs = {
    android = rec {
      name = "android";
      envVars = [
        "ANDROID_HOME=${androidPkgs}"
        "ANDROID_NDK_HOME=${androidPkgs}/ndk-bundle"
        "PATH=${makeBinPath [ openjdk ]}:$PATH"
      ];
      gomobileExtraFlags = [ "-androidapi 23" ];
      outputFileName = "status-go-${srcData.shortRev}.aar";
      platforms = {
        arm64 = {
          linkNimbus = enableNimbus;
          nimbus = assert enableNimbus; nimbus.wrappers-android.arm64;
          gomobileTarget = "${name}/arm64";
          outputFileName = "status-go-${srcData.shortRev}-arm64.aar";
        };
        arm = {
          linkNimbus = enableNimbus;
          nimbus = assert enableNimbus; nimbus.wrappers-android.arm;
          gomobileTarget = "${name}/arm";
          outputFileName = "status-go-${srcData.shortRev}-arm.aar";
        };
        x86 = {
          linkNimbus = enableNimbus;
          nimbus = assert enableNimbus; nimbus.wrappers-android.x86;
          gomobileTarget = "${name}/386";
          outputFileName = "status-go-${srcData.shortRev}-386.aar";
        };
      };
    };
    ios = rec {
      name = "ios";
      envVars = [];
      gomobileExtraFlags = [ "-iosversion=8.0" ];
      outputFileName = "Statusgo.framework";
      platforms = {
        ios = {
          linkNimbus = enableNimbus;
          nimbus = assert false; null; # TODO: Currently we don't support Nimbus on iOS
          gomobileTarget = name;
          inherit outputFileName;
        };
      };
    };
  };
  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 stdenv.isDarwin then hostConfigs.darwin else hostConfigs.linux;

  goBuildFlags = concatStringsSep " " [ "-v" (optionalString enableNimbus "-tags='nimbus'") ];
  # status-go params to be set at build time, important for About section and metrics
  goBuildParams = {
    GitCommit = srcData.rev;
    Version = srcData.cleanVersion;
  };
  # These are necessary for status-go to show correct version
  paramsLdFlags = attrValues (mapAttrs (name: value:
    "-X github.com/status-im/status-go/params.${name}=${value}"
  ) goBuildParams);

  goBuildLdFlags = paramsLdFlags ++ [
    "-s" # -s disabled symbol table
    "-w" # -w disables DWARF debugging information
  ];

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

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

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

  android = rec {
    buildInputs = [ status-go-packages.android ];
    shell = mkShell {
      inherit buildInputs;
      shellHook = ''
        # These variables are used by the Status Android Gradle build script in android/build.gradle
        export STATUS_GO_ANDROID_LIBDIR=${status-go-packages.android}/lib
      '';
    };
  };
  ios = rec {
    buildInputs = [ status-go-packages.ios ];
    shell = mkShell {
      inherit buildInputs;
      shellHook = ''
        # These variables are used by the iOS build preparation section in nix/mobile/ios/default.nix
        export STATUS_GO_IOS_LIBDIR=${status-go-packages.ios}/lib/Statusgo.framework
      '';
    };
  };
  desktop = rec {
    buildInputs = [ status-go-packages.desktop ];
    shell = mkShell {
      inherit buildInputs;
      shellHook = ''
        # 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
      '';
    };
  };
  platforms = [ android ios desktop ];

in {
  shell = lib.mergeSh mkShell {} (catAttrs "shell" platforms);

  # CHILD DERIVATIONS
  inherit android ios desktop;
}