feat(android): forceCache option

Author: farfromrefug

plugin/platforms/android/java/com/nativescript/https/CacheInterceptor.java

@@ -0,0 +1,18 @@
+package com.nativescript.https;
+import okhttp3.Interceptor;
+import okhttp3.Request;
+import okhttp3.Response;
+import java.io.IOException;
+
+public class CacheInterceptor implements Interceptor {
+    final String TAG = "CacheInterceptor";
+
+    public Response intercept(Interceptor.Chain chain ) throws IOException {
+        Request originalRequest = chain.request();
+        String cacheControlHeader = originalRequest.header("Cache-Control");
+        Response originalResponse = chain.proceed(originalRequest);
+        return originalResponse.newBuilder().header("Cache-Control", cacheControlHeader).build();
+    }
+
+
+}

src/https.android.ts

@@ -18,9 +18,10 @@ const peer: Ipeer = {
 };
 
 let cache: okhttp3.Cache;
-
+let forceCache = false;
 export function setCache(options?: Https.CacheOptions) {
     if (options) {
+        forceCache = options.forceCache === true;
         cache = new okhttp3.Cache(new java.io.File(options.diskLocation), options.diskSize);
     } else {
         cache = null;
@@ -329,6 +330,9 @@ function getClient(reload: boolean = false, timeout: number = 10): okhttp3.OkHtt
 
     if (cache) {
         client.cache(cache);
+        if (forceCache) {
+            client.addInterceptor(new com.nativescript.https.CacheInterceptor());
+        }
     }
     if (cookieJar) {
         client.cookieJar(cookieJar);

src/https.common.ts

@@ -11,6 +11,7 @@ export interface CacheOptions {
     diskLocation: string;
     diskSize: number;
     memorySize?: number;
+    forceCache?: boolean;
 }
 
 export interface HttpsFormDataParam {

src/typings/android.d.ts

@@ -4,6 +4,9 @@ declare namespace com {
             export class QuotePreservingCookieJar extends okhttp3.CookieJar {
                 constructor(manager: java.net.CookieManager);
             }
+            export class CacheInterceptor implements okhttp3.Interceptor {
+                intercept(chain): okhttp3.Response;
+            }
             export class OkHttpResponse {
                 progressCallback: OkHttpResponse.OkHttpResponseProgressCallback;
                 closeCallback: OkHttpResponse.OkHttpResponseCloseCallback;