Prevent exception in Android when using built-in parameters (#74)

Fixes #73

Author: no23reason

android/src/main/java/com/reactlibrary/RNAppAuthModule.java

@@ -274,6 +274,20 @@ private void authorizeWithConfiguration(
                         .setScope(scopesString);
 
         if (additionalParametersMap != null) {
+            // handle additional parameters separately to avoid exceptions from AppAuth
+            if (additionalParametersMap.containsKey("display")) {
+                authRequestBuilder.setDisplay(additionalParametersMap.get("display"));
+                additionalParametersMap.remove("display");
+            }
+            if (additionalParametersMap.containsKey("login_hint")) {
+                authRequestBuilder.setLoginHint(additionalParametersMap.get("login_hint"));
+                additionalParametersMap.remove("login_hint");
+            }
+            if (additionalParametersMap.containsKey("prompt")) {
+                authRequestBuilder.setPrompt(additionalParametersMap.get("prompt"));
+                additionalParametersMap.remove("prompt");
+            }
+
             authRequestBuilder.setAdditionalParameters(additionalParametersMap);
         }
 

index.d.ts

@@ -17,11 +17,17 @@ export type BaseAuthConfiguration =
       serviceConfiguration?: ServiceConfiguration;
     };
 
+interface BuiltInParameters {
+  display?: "page" | "popup" | "touch" | "wap";
+  login_prompt?: string;
+  prompt?: "consent" |"login" | "none" | "select_account";
+}
+
 export type AuthConfiguration = BaseAuthConfiguration & {
   clientSecret?: string;
   scopes: string[];
   redirectUrl: string;
-  additionalParameters?: { [name: string]: string };
+  additionalParameters?: BuiltInParameters & { [name: string]: string };
   dangerouslyAllowInsecureHttpRequests?: boolean;
 };