feat(ios): startWithOrderId

ios/Paypal.m

@@ -2,8 +2,10 @@
 
 @interface RCT_EXTERN_MODULE(Paypal, NSObject)
 
-RCT_EXTERN_METHOD(multiply:(float)a withB:(float)b
-                 withResolver:(RCTPromiseResolveBlock)resolve
-                 withRejecter:(RCTPromiseRejectBlock)reject)
+RCT_EXTERN_METHOD(
+                  startWithOrderId:(NSDictionary *)options
+                  resolver:(RCTPromiseResolveBlock *)resolve
+                  rejecter:(RCTPromiseRejectBlock *)reject
+                  )
 
 @end

ios/Paypal.swift

@@ -1,8 +1,45 @@
+import PayPalCheckout
+
 @objc(Paypal)
 class Paypal: NSObject {
-
-    @objc(multiply:withB:withResolver:withRejecter:)
-    func multiply(a: Float, b: Float, resolve:RCTPromiseResolveBlock,reject:RCTPromiseRejectBlock) -> Void {
-        resolve(a*b)
+    @objc func startWithOrderId(
+        _
+            options: NSDictionary,
+        resolver: @escaping RCTPromiseResolveBlock,
+        rejecter: @escaping RCTPromiseRejectBlock
+    ) -> Void {
+        let clientID = options["clientID"] as? String ?? ""
+        let returnUrl = options["returnUrl"] as? String ?? ""
+        let orderId = options["orderId"] as? String ?? ""
+        let useSandbox = options["useSandbox"] as? Bool ?? true
+
+        let environment = useSandbox ? Environment.sandbox : Environment.live
+        let config = CheckoutConfig(
+            clientID: clientID,
+            returnUrl: returnUrl,
+            environment: environment
+        )
+
+        Checkout.set(config: config)
+
+        Checkout.setCreateOrderCallback { createOrderActions in
+            createOrderActions.set(orderId: orderId)
+        }
+
+        Checkout.setOnApproveCallback { approval in
+            resolver(approval.data)
+        }
+
+        Checkout.setOnCancelCallback { error in
+            rejecter("PAYPAL_CANCELLED", "The user cancelled", nil)
+        }
+
+        Checkout.setOnErrorCallback { error in
+            rejecter("PAYPAL_ERROR", error.reason, nil)
+        }
+
+        DispatchQueue.main.async {
+            Checkout.start()
+        }
     }
 }

react-native-paypal.podspec

@@ -16,4 +16,5 @@ Pod::Spec.new do |s|
   s.source_files = "ios/**/*.{h,m,mm,swift}"
 
   s.dependency "React-Core"
+  s.dependency "PayPalCheckout"
 end