Update app.py

app.py

@@ -1,34 +1,55 @@
-from fastapi import FastAPI, Form, HTMLResponse
-from fastapi.responses import StreamingResponse
+from fastapi import FastAPI, HTTPException, Request
+from llama_cpp import Llama
 import time
+import os
 
 app = FastAPI()
 
-def generate_responses(prompt):
-    from llama_cpp import Llama
+llm = Llama(model_path="llama-2-7b-chat.Q3_K_S.gguf", n_ctx=2048, n_batch=512, use_mlock=True, n_threads=8)
 
-    llm = Llama(model_path="llama-2-7b-chat.Q3_K_S.gguf", n_ctx=2048, n_batch=512, use_mlock=True, n_threads=8)
-
-    output_stream = llm(prompt, max_tokens=1024, echo=False, temperature=0.2, top_p=0.1, stream=True)
+def typewrite(text, delay=0.01):
+    for char in text:
+        print(char, end='', flush=True)
+        time.sleep(delay)
+    print(end='', flush=True)  # Print newline to move to the next line
 
+@app.post("/chat")
+async def chat(request: Request):
     try:
+        data = await request.json()
+        user_input = data.get("user_input")
+
+        if not user_input:
+            raise HTTPException(status_code=400, detail="Missing 'user_input' field in the request JSON.")
+
+        os.system("cls")
+        print("Chatbot by Aritra Roy & DVLH")
+
+        ask = user_input
+
+        prompt = f"Llama-2-Chat [INST] <<SYS>>You're an assistant named Tusti. You are Developed by Aritra Roy. Don't share any false information.<</SYS>> {ask} [/INST]"
+
+        output_stream = llm(prompt, max_tokens=1024, echo=False, temperature=0.2, top_p=0.1, stream=True)
+
+        response_text_chunk = ''
+
         while True:
             try:
                 chunk = next(output_stream)
                 if chunk.get('choices') and chunk['choices'][0].get('text'):
-                    response_text_chunk = chunk['choices'][0]['text']
-                    yield response_text_chunk
+                    response_text_chunk += chunk['choices'][0]['text']
+                    typewrite(response_text_chunk, delay=0.00)
             except StopIteration:
                 break
-    except StopIteration:
-        pass
 
-@app.post("/chat")
-async def chat(input_text: str = Form(...)):
-    prompt = f"Llama-2-Chat [INST] <<SYS>>You're a assistant named Tusti.You are Developed by Aritra Roy.Don't share any false information.<</SYS>> {input_text} [/INST]"
-    return StreamingResponse(generate_responses(prompt), media_type="text/plain")
+        if ask == 'clear':
+            os.system("cls")
+
+        return {"response": response_text_chunk}
+
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=str(e))
 
 if __name__ == "__main__":
     import uvicorn
-
-    uvicorn.run(app, host="0.0.0.0", port=7860)
+    uvicorn.run(app, host="0.0.0.0", port=7860)