Feature/read me update (#9)

* Documentation Edit

* Documentation Edit

* Chat session History

---------

Co-authored-by: aiupbw3_amway <[email protected]>

blogs-analyzer/src/main/java/com/nashtech/blogs/analyzer/controller/GeminiController.java

@@ -2,15 +2,19 @@
 
 
 import com.google.cloud.vertexai.api.GenerateContentResponse;
+import com.google.cloud.vertexai.api.Content;
 import com.google.cloud.vertexai.generativeai.ChatSession;
 import com.google.cloud.vertexai.generativeai.ResponseHandler;
 import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
 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.RestController;
 
 import java.io.IOException;
+import java.util.List;
 
 @RestController
 @RequestMapping("/api/gemini")
@@ -23,4 +27,12 @@ public String fromBodyPost(@RequestBody String prompt) throws IOException {
         GenerateContentResponse generateContentResponse = this.chatSession.sendMessage(prompt);
         return ResponseHandler.getText(generateContentResponse);
     }
+
+    @GetMapping("/v1/history/{text}")
+    public List<String> getChatSessionHistory(@PathVariable String text) throws IOException {
+        GenerateContentResponse generateContentResponse = this.chatSession.sendMessage(text);
+        List<Content> history = this.chatSession.getHistory();
+        return history.stream().flatMap(h -> h.getPartsList().stream()).map(part -> part.getText()).toList();
+    }
+
 }