import gradio as gr from gradio import ChatMessage import json from openai import OpenAI from tools import tools, oitools from dotenv import load_dotenv from datetime import datetime import os import re load_dotenv(".env") HF_TOKEN = os.environ.get("HF_TOKEN") BASE_URL = os.environ.get("BASE_URL") SYSTEM_PROMPT_TEMPLATE = """You are an AI assistant for a **hotel booking and information system**. Your job is to help users with: - Hotel room bookings - Modifying or canceling reservations - Answering questions about accommodations, facilities, dining, and other hotel-related details Today’s date is **{date}** — for your reference only. Do not use it in bookings unless the user provides or confirms it. ### Response Guidelines: - **Be complete.** If key details (like check-in/check-out dates, number of guests, or room type) are missing, ask the user for them. - **Be clear.** If you're unsure about anything, ask the user to clarify. - **Match language.** Always reply in the same language the user used. ### Booking Rules: - You can **only** handle **hotel room reservations**.""" # print(json.dumps(oitools, indent=2)) client = OpenAI( base_url=f"{BASE_URL}/v1", api_key=HF_TOKEN ) def today_date(): return datetime.today().strftime('%A, %B %d, %Y, %I:%M %p') def clean_json_string(json_str): try: data = json.loads(json_str) if type(data) == list: return json.dumps(data[0]) return json_str except: return re.sub(r'[ ,}\s]+$', '', json_str) + '}' def completion(history, model, system_prompt: str, tools=None): messages = [{"role": "system", "content": system_prompt.format(date=today_date())}] for msg in history: if isinstance(msg, dict): msg = ChatMessage(**msg) if msg.role == "assistant" and hasattr(msg, "metadata") and msg.metadata: tools_calls = json.loads(msg.metadata.get("title", "[]")) # for tool_calls in tools_calls: # tool_calls["function"]["arguments"] = json.loads(tool_calls["function"]["arguments"]) messages.append({"role": "assistant", "tool_calls": tools_calls, "content": ""}) messages.append({"role": "tool", "content": msg.content}) else: messages.append({"role": msg.role, "content": msg.content}) request_params = { "model": model, "messages": messages, "stream": True, "max_tokens": 1000, "temperature": 0.2, "top_p": 0.3, #"frequency_penalty": 0.2, "extra_body": {"repetition_penalty": 1.2, "top_k": 10, "min_p": 0.4}, } if tools: request_params.update({"tool_choice": "auto", "tools": tools}) return client.chat.completions.create(**request_params) def llm_in_loop(history, system_prompt, recursive): try: models = client.models.list() model = models.data[0].id if models.data else "gpt-3.5-turbo" except Exception as err: gr.Warning("The model is initializing. Please wait; this may take 5 to 10 minutes ⏳.", duration=20) raise err arguments = "" name = "" chat_completion = completion(history=history, tools=oitools, model=model, system_prompt=system_prompt) appended = False # if chat_completion.choices and chat_completion.choices[0].message.tool_calls: # call = chat_completion.choices[0].message.tool_calls[0] # if hasattr(call.function, "name") and call.function.name: # name = call.function.name # if hasattr(call.function, "arguments") and call.function.arguments: # arguments += call.function.arguments # elif chat_completion.choices[0].message.content: # if not appended: # history.append(ChatMessage(role="assistant", content="")) # appended = True # history[-1].content += chat_completion.choices[0].message.content # yield history[recursive:] for chunk in chat_completion: if chunk.choices and chunk.choices[0].delta.tool_calls: call = chunk.choices[0].delta.tool_calls[0] if hasattr(call.function, "name") and call.function.name: name = call.function.name if hasattr(call.function, "arguments") and call.function.arguments: arguments += call.function.arguments elif chunk.choices[0].delta.content: if not appended: history.append(ChatMessage(role="assistant", content="")) appended = True history[-1].content += chunk.choices[0].delta.content yield history[recursive:] if name: print("------------------------") print(name, arguments) arguments = clean_json_string(arguments) if arguments else "{}" print(name, arguments) print("====================") arguments = json.loads(arguments) result = f"💥 Error using tool {name}, tool doesn't exist" if name not in tools else str(tools[name].invoke(input=arguments)) result = json.dumps({name: result}, ensure_ascii=False) # msg = ChatMessage( # role="assistant", # content="", # metadata= {"title": f"🛠️ Using tool '{name}', arguments: {json.dumps(json_arguments, ensure_ascii=False)}"}, # options=[{"label":"tool_calls", "value": json.dumps([{"id": "call_FthC9qRpsL5kBpwwyw6c7j4k","function": {"arguments": arguments,"name": name},"type": "function"}])}] # ) msg = ChatMessage(role="assistant", content=result, metadata={"title": json.dumps([{"id": "call_id", "function": {"arguments": json.dumps(arguments, ensure_ascii=False), "name": name}, "type": "function"}], ensure_ascii=False)}) if appended: print("Text with function", history[-1].content) msg.content = history[-1].content + "\n" + msg.content history[-1] = msg else: history.append(msg) yield history[recursive:] yield from llm_in_loop(history, system_prompt, recursive - 1) def respond(message, history, additional_inputs): history.append(ChatMessage(role="user", content=message)) yield from llm_in_loop(history, additional_inputs, -1) if __name__ == "__main__": system_prompt = gr.Textbox(label="System prompt", value=SYSTEM_PROMPT_TEMPLATE, lines=3) demo = gr.ChatInterface(respond, type="messages", additional_inputs=[system_prompt]) demo.launch()