Implement iOS Part

package/android/src/main/cpp/AndroidFilamentProxy.h

@@ -23,7 +23,7 @@ class AndroidFilamentProxy : public FilamentProxy {
 
 private:
   // TODO(hanno): implement
-  int loadModel(const std::string& path);
+  int loadModel(const std::string& path) override;
 
 private:
   jni::global_ref<JFilamentProxy::javaobject> _proxy;

package/ios/AppleFilamentProxy.h

@@ -7,7 +7,22 @@
 //
 
 #include "FilamentProxy.h"
+#include <jsi/jsi.h>
+#include <ReactCommon/CallInvoker.h>
+
+namespace margelo {
 
 class AppleFilamentProxy : public FilamentProxy {
+public:
+  explicit AppleFilamentProxy(jsi::Runtime* runtime, std::shared_ptr<react::CallInvoker> callInvoker);
   ~AppleFilamentProxy();
-}
+
+public:
+  int loadModel(const std::string &path) override;
+
+private:
+  jsi::Runtime* _runtime;
+  std::shared_ptr<react::CallInvoker> _callInvoker;
+};
+
+} // namespace margelo

package/ios/AppleFilamentProxy.mm

@@ -0,0 +1,25 @@
+//
+//  AppleFilamentProxy.mm
+//  react-native-filament
+//
+//  Created by Marc Rousavy on 20.02.24.
+//
+
+#import <Foundation/Foundation.h>
+#import "AppleFilamentProxy.h"
+
+namespace margelo {
+
+AppleFilamentProxy::AppleFilamentProxy(jsi::Runtime* runtime, std::shared_ptr<react::CallInvoker> callInvoker):
+  _runtime(runtime), _callInvoker(callInvoker) { }
+
+AppleFilamentProxy::~AppleFilamentProxy() {
+  // TODO(hanno): cleanup here?
+}
+
+int AppleFilamentProxy::loadModel(const std::string &path) {
+  // TODO(hanno): Implement model loading here
+  return 13;
+}
+
+} // namespace margelo

package/ios/FilamentInstaller.h

@@ -0,0 +1,15 @@
+//
+//  IOSFilamentInstaller.h
+//  react-native-filament
+//
+//  Created by Marc Rousavy on 20.02.24.
+//
+
+#import <Foundation/Foundation.h>
+#import <React/RCTBridge.h>
+
+@interface FilamentInstaller : NSObject
+
++ (BOOL)installToBridge:(RCTBridge*)bridge;
+
+@end

package/ios/FilamentInstaller.mm

@@ -0,0 +1,47 @@
+//
+//  FilamentInstaller.m
+//  react-native-filament
+//
+//  Created by Marc Rousavy on 20.02.24.
+//
+
+#import <Foundation/Foundation.h>
+#import "FilamentInstaller.h"
+#import "AppleFilamentProxy.h"
+#import <ReactCommon/CallInvoker.h>
+
+#import <React/RCTBridge+Private.h>
+#import <React/RCTBridge.h>
+
+using namespace facebook;
+
+// This is defined in RCTCxxBridge.mm, and we are technically using a private API here.
+@interface RCTCxxBridge (CallInvoker)
+- (std::shared_ptr<react::CallInvoker>)jsCallInvoker;
+@end
+
+@implementation FilamentInstaller
+
++ (BOOL)installToBridge:(RCTBridge *)bridge {
+  RCTCxxBridge* cxxBridge = (RCTCxxBridge*)[RCTBridge currentBridge];
+  if (!cxxBridge.runtime) {
+    return NO;
+  }
+
+  jsi::Runtime* runtime = (jsi::Runtime*)cxxBridge.runtime;
+  if (!runtime) {
+    return NO;
+  }
+  std::shared_ptr<react::CallInvoker> callInvoker = cxxBridge.jsCallInvoker;
+  if (!callInvoker) {
+    return NO;
+  }
+
+  // global.__filamentProxy
+  auto filamentProxy = std::make_shared<margelo::AppleFilamentProxy>(runtime, callInvoker);
+  runtime->global().setProperty(*runtime, "__filamentProxy", jsi::Object::createFromHostObject(*runtime, filamentProxy));
+
+  return YES;
+}
+
+@end