Update API_KEY validator

app.py

@@ -1,5 +1,6 @@
 from spaces import GPU
 
+from os import getenv
 from threading import Thread
 from transformers import Qwen2VLForConditionalGeneration, Qwen2VLProcessor, TextIteratorStreamer, AutoProcessor, BatchFeature
 from qwen_vl_utils import process_vision_info
@@ -48,10 +49,13 @@ def infer(
 def respond(
     message,
     history,
+    api_key,
     max_tokens,
     temperature,
     top_p,
 ):
+    if api_key != getenv("API_KEY"):
+        raise ValueError("Invalid API Key")
     if len(history) == 0 or history[0]['role'] != 'system':
         messages = [{"role": "system", "content": """You are Softie, or 小软 in Chinese.
 You are an intelligent assistant developed by the School of Software at Hefei University of Technology.
@@ -68,6 +72,7 @@ app = ChatInterface(
     respond,
     type="messages",
     additional_inputs=[
+        Textbox(label="API Key"),
         Slider(minimum=1, maximum=2048, value=512, step=1, label="最大生成长度"),
         Slider(minimum=0.01, maximum=4.0, value=0.75, step=0.01, label="温度系数（Temperature）"),
         Slider(minimum=0.01, maximum=1.0, value=0.5, step=0.01, label="核取样系数（Top-p）"),