Add app/src/release/java/chat/rocket/android/helper/OkHttpHelper.kt

app/src/release/java/chat/rocket/android/helper/OkHttpHelper.kt

+package chat.rocket.android.helper
+
+import android.content.Context
+import chat.rocket.android.RocketChatCache
+import chat.rocket.android.api.rest.CookieInterceptor
+import chat.rocket.android.api.rest.DefaultCookieProvider
+import java.util.concurrent.TimeUnit
+import okhttp3.OkHttpClient
+
+object OkHttpHelper {
+
+    fun getClientForUploadFile(): OkHttpClient {
+        if (httpClientForUploadFile == null) {
+            httpClientForUploadFile = OkHttpClient.Builder().build()
+        }
+        return httpClientForUploadFile ?: throw AssertionError("httpClientForUploadFile set to null by another thread")
+    }
+
+    fun getClientForDownloadFile(context: Context): OkHttpClient {
+        if(httpClientForDownloadFile == null) {
+            httpClientForDownloadFile = OkHttpClient.Builder()
+                    .addInterceptor(CookieInterceptor(DefaultCookieProvider(RocketChatCache(context))))
+                    .build()
+        }
+        return httpClientForDownloadFile ?: throw  AssertionError("httpClientForDownloadFile set to null by another thread")
+    }
+    /**
+     * Returns the OkHttpClient instance for WebSocket connection.
+     * @return The OkHttpClient WebSocket connection instance.
+     */
+    fun getClientForWebSocket(): OkHttpClient {
+        if (httpClientForWS == null) {
+            httpClientForWS = OkHttpClient.Builder()
+                    .readTimeout(0, TimeUnit.NANOSECONDS)
+                    .build()
+        }
+        return httpClientForWS ?: throw AssertionError("httpClientForWS set to null by another thread")
+    }
+
+    private var httpClientForUploadFile: OkHttpClient? = null
+    private var httpClientForDownloadFile: OkHttpClient? = null
+    private var httpClientForWS: OkHttpClient? = null
+}
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