feat(AI Chat): Implement endpoint to make a request to Chat GPT

#251

src/main/java/org/wise/portal/presentation/web/controllers/ChatGptcontroller.java

@@ -0,0 +1,57 @@
+package org.wise.portal.presentation.web.controllers;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.OutputStreamWriter;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.env.Environment;
+import org.springframework.security.access.annotation.Secured;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/api")
+public class ChatGptcontroller {
+
+  @Autowired
+  Environment appProperties;
+
+  @ResponseBody
+  @Secured("ROLE_USER")
+  @PostMapping("/chat-gpt")
+  protected String sendChatMessage(@RequestBody String body) {
+    String openaiApiKey = appProperties.getProperty("OPENAI_API_KEY");
+    if (openaiApiKey == null || openaiApiKey.isEmpty()) {
+      throw new RuntimeException("OPENAI_API_KEY is not set");
+    }
+    try {
+      URL url = new URL("https://api.openai.com/v1/chat/completions");
+      HttpURLConnection connection = (HttpURLConnection) url.openConnection();
+      connection.setRequestMethod("POST");
+      connection.setRequestProperty("Authorization", "Bearer " + openaiApiKey);
+      connection.setRequestProperty("Content-Type", "application/json");
+      connection.setDoOutput(true);
+      OutputStreamWriter writer = new OutputStreamWriter(connection.getOutputStream());
+      writer.write(body);
+      writer.flush();
+      writer.close();
+      BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream()));
+      String line;
+      StringBuffer response = new StringBuffer();
+      while ((line = br.readLine()) != null) {
+        response.append(line);
+      }
+      br.close();
+      return response.toString();
+    } catch (IOException e) {
+      throw new RuntimeException(e);
+    }
+  }
+}

src/main/resources/application-dockerdev-sample.properties

@@ -195,3 +195,5 @@ system-wide-salt=secret
 
 # IP Address of Clam AV server for virus scanning
 # clamav.server.address=127.0.0.1
+
+#OPENAI_API_KEY=

src/main/resources/application_sample.properties

@@ -195,3 +195,5 @@ system-wide-salt=secret
 
 # IP Address of Clam AV server for virus scanning
 # clamav.server.address=127.0.0.1
+
+#OPENAI_API_KEY=