fixed some bugs

app.py

@@ -1,10 +1,15 @@
 import openai
 import streamlit as st
-from openai import OpenAI
+from openai import OpenAI, OpenAIError
 import os
 
 # Set OpenAI API Key
-client = OpenAI(api_key=os.getenv("OPENAI_API_KEY", "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"))
+api_key = os.getenv("OPENAI_API_KEY")
+if not api_key:
+    st.error("API key is missing. Set OPENAI_API_KEY as an environment variable.")
+    st.stop()
+
+client = OpenAI(api_key=api_key)
 
 
 # Streamlit UI
@@ -25,8 +30,8 @@ if st.button("Generate Text"):
     if not prompt.strip():
         st.error("Please enter a prompt.")
     else:
+        full_prompt = f"{prompt}\n\nFormat: {output_format}\nTone: {tone}\nCreative Mode: {creative_mode}"
         try:
-            full_prompt = f"Generate a {tone.lower()} {output_format.lower()} based on: {prompt}"
             response = client.chat.completions.create(
                 model="gpt-3.5-turbo",
                 messages=[{"role": "user", "content": full_prompt}],
@@ -34,13 +39,13 @@ if st.button("Generate Text"):
                 max_tokens=max_length,
                 n=n_responses
             )
-            
-            for i, choice in enumerate(response.choices):
-                st.subheader(f"Response {i+1}")
-                st.write(choice.message.content)
-                
-        except openai.OpenAIError as e:
-            st.error(f"API Error: {e}")
+        except OpenAIError as e:
+            if "insufficient_quota" in str(e):
+                st.error("You have exceeded your API quota. Please check your OpenAI account billing and usage.")
+            elif "model_not_found" in str(e):
+                st.error("The specified AI model does not exist or you do not have access to it.")
+            else:
+                st.error("An error occurred while generating text. Please try again later.")
 
 # Feedback Section
 st.subheader("Feedback")