Added before, transform and baseUrl in constructor

Author: JulianFun123

src/main/java/org/javawebstack/httpclient/HTTPClient.java

@@ -3,6 +3,7 @@
 import com.google.gson.FieldNamingPolicy;
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
+import org.javawebstack.httpclient.interfaces.BeforeRequest;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -18,6 +19,14 @@ public class HTTPClient {
     private String baseUrl = "";
     private Map<String, String> defaultHeaders = new HashMap<>();
 
+    private BeforeRequest beforeInterceptor;
+
+    public HTTPClient(String baseUrl) {
+        this.baseUrl = baseUrl;
+    }
+
+    public HTTPClient() { }
+
     public HTTPClient gson(Gson gson){
         this.gson = gson;
         return this;
@@ -77,6 +86,15 @@ public HTTPRequest get(String path){
         return request("GET", path);
     }
 
+    public HTTPClient before(BeforeRequest requestInterceptor){
+        beforeInterceptor = requestInterceptor;
+        return this;
+    }
+
+    public BeforeRequest getBeforeInterceptor() {
+        return beforeInterceptor;
+    }
+
     public HTTPRequest post(String path){
         return request("POST", path);
     }

src/main/java/org/javawebstack/httpclient/HTTPRequest.java

@@ -1,5 +1,6 @@
 package org.javawebstack.httpclient;
 
+import org.javawebstack.httpclient.interfaces.ResponseTransformer;
 import org.javawebstack.querystring.QueryString;
 
 import java.io.ByteArrayOutputStream;
@@ -115,6 +116,10 @@ public String header(String key){
         return responseHeaders.get(key);
     }
 
+    public <T> T transform(ResponseTransformer responseTransformer, Class<T> type){
+        return (T) responseTransformer.transform(this);
+    }
+
     public HTTPRequest execute(){
         HttpURLConnection conn = null;
         try{
@@ -127,6 +132,11 @@ public HTTPRequest execute(){
             for(String k : requestHeaders.keySet()){
                 conn.setRequestProperty(k, requestHeaders.get(k));
             }
+
+            if (client.getBeforeInterceptor() != null)
+                client.getBeforeInterceptor().doBefore(this);
+
+
             if(requestBody!=null){
                 conn.setDoOutput(true);
                 OutputStream os = conn.getOutputStream();
@@ -167,5 +177,4 @@ private static byte[] readAll(InputStream is) throws IOException {
         is.close();
         return baos.toByteArray();
     }
-
 }

src/main/java/org/javawebstack/httpclient/interfaces/BeforeRequest.java

@@ -0,0 +1,7 @@
+package org.javawebstack.httpclient.interfaces;
+
+import org.javawebstack.httpclient.HTTPRequest;
+
+public interface BeforeRequest {
+    void doBefore(HTTPRequest request);
+}

src/main/java/org/javawebstack/httpclient/interfaces/ResponseTransformer.java

@@ -0,0 +1,7 @@
+package org.javawebstack.httpclient.interfaces;
+
+import org.javawebstack.httpclient.HTTPRequest;
+
+public interface ResponseTransformer {
+    Object transform(HTTPRequest request);
+}