OkHttpClient (SHORT) for caching

MyOkHttpClient.kt

val okHttpClient = OkHttpClient.Builder()
                // Specify the cache we created earlier.
                .cache(myCache)
                // Add an Interceptor to the OkHttpClient.
                .addInterceptor { chain ->
                                 
                    // Get the request from the chain.
                    var request = chain.request()
                                 
                    /* 
                    *  Leveraging the advantage of using Kotlin,
                    *  we initialize the request and change its header depending on whether 
                    *  the device is connected to Internet or not.
                    */ 
                    request = if (hasNetwork(context)!!)
                        /* 
                        *  If there is Internet, get the cache that was stored 5 seconds ago.
                        *  If the cache is older than 5 seconds, then discard it,
                        *  and indicate an error in fetching the response.
                        *  The 'max-age' attribute is responsible for this behavior.
                        */
                        request.newBuilder().header("Cache-Control", "public, max-age=" + 5).build()
                    else
                        /*
                        *  If there is no Internet, get the cache that was stored 7 days ago.
                        *  If the cache is older than 7 days, then discard it,
                        *  and indicate an error in fetching the response.
                        *  The 'max-stale' attribute is responsible for this behavior.
                        *  The 'only-if-cached' attribute indicates to not retrieve new data; fetch the cache only instead.
                        */
                        request.newBuilder().header("Cache-Control", "public, only-if-cached, max-stale=" + 60 * 60 * 24 * 7).build()
                   // End of if-else statement

                   // Add the modified request to the chain.            
                   chain.proceed(request)
                }
                .build()