Update app.py

app.py

@@ -197,6 +197,16 @@ def generate_prompt_with_history_hf(prompt, history):
 
     messages = "".join(["".join(["\n<human>:"+item[0], "\n<bot>:"+item[1]])  #curr_system_message +
                 for item in history_transformer_format])
+
+#Prompt und History für Langchain Schnittstelle
+def generate_prompt_with_history_langchain(prompt, history):
+    history_langchain_format = []
+    for human, ai in history:
+        history_langchain_format.append(HumanMessage(content=human))
+        history_langchain_format.append(AIMessage(content=ai))
+    history_langchain_format.append(HumanMessage(content=message))
+  
+    return history_langchain_format
         
 
 ###################################################
@@ -211,8 +221,10 @@ def invoke (prompt, history, openai_api_key, rag_option, temperature=0.9, max_ne
     #history_text_und_prompt = generate_prompt_with_history_hf(prompt, history)
 
     #history für openAi formatieren
-    history_text_und_prompt = generate_prompt_with_history_openai(prompt, history)
-    
+    #history_text_und_prompt = generate_prompt_with_history_openai(prompt, history)
+
+    #history für Langchain formatieren
+    history_text_und_prompt = generate_prompt_with_history_langchain(prompt, history)
     
     if (openai_api_key == "" or openai_api_key == "sk-"):
         #raise gr.Error("OpenAI API Key is required.")