import json
import openai
from gradio import ChatMessage

class SantaAgent:

    def __init__(self, system_prompt: str):
        self.system_prompt = system_prompt
        self.client = openai.OpenAI()
        self.tools = [
            {
                "type": "function", 
                "function": {
                    "name": "buy_item", 
                    "description": "Buy an item from the store.", 
                    "parameters": {
                        "type": "object", 
                        "properties": {
                            "item": {
                                "type": "string", 
                                "description": "The item to buy from the store."
                            }
                        },
                        "required": ["item"]
                    }
                }
            },
            {
                "type": "function", 
                "function": {
                    "name": "give_present", 
                    "description": "Give a present to a person.", 
                    "parameters": {
                        "type": "object", 
                        "properties": {
                            "person": {
                                "type": "string", 
                                "description": "The person to give the present to."
                            },
                            "item": {
                                "type": "string", 
                                "description": "The item to give to the person."
                            }
                        },
                        "required": ["person", "item"]
                    }
                }
            },
            {
                "type": "function", 
                "function": {
                    "name": "stop", 
                    "description": "Use this tool if you are finished and want to stop."
                }
            }
        ]

    def buy_item(self, item: str):
        """Buy an item from the store."""
        return f"Bought {item} from the store."

    def give_present(self, person: str, item: str):
        """Give a present to a person."""
        return f"Gave {item} to {person}."

    def stop(self):
        return "STOP"

    def mock_run_santa_agent(self):
        messages = [
            {"role": "user", "content": "Hi there"},
            {"role": "assistant", "content": "Bye bye"},
        ]
        gradio_messages = [
            ChatMessage(role="user", content="Hi there"),
            ChatMessage(role="assistant", content="Bye bye"),
        ]
        return messages, gradio_messages

    def run_santa_agent(self, user_prompt: str):
        """Run the Santa agent."""
        messages = [
            {"role": "system", "content": self.system_prompt},
            {"role": "user", "content": user_prompt},
        ]
        gradio_messages = [
            ChatMessage(role="system", content=self.system_prompt),
            ChatMessage(role="user", content=user_prompt),
        ]
        while True:
            response = self.client.chat.completions.create(
                messages=messages,
                model="gpt-4o-mini",
                tools=self.tools,
                tool_choice="auto",
            )
            messages.append(response.choices[0].message.to_dict())
            content = response.choices[0].message.content
            if content is not None:
                gradio_messages.append(ChatMessage(role="assistant", content=content))
            tool_calls = response.choices[0].message.tool_calls

            should_stop = False
            if tool_calls:
                for tool_call in tool_calls:
                    arguments = json.loads(tool_call.function.arguments)
                    if tool_call.function.name == "buy_item":
                        item = arguments["item"]
                        gradio_messages.append(ChatMessage(role="assistant", content=f"buy_item({item})", metadata={"title": "🔧 Tool Call: buy_item"}))
                        output = self.buy_item(item)
                    elif tool_call.function.name == "give_present":
                        person, item = arguments["person"], arguments["item"]
                        gradio_messages.append(ChatMessage(role="assistant", content=f"give_present({person}, {item})", metadata={"title": "🔧 Tool Call: give_present"}))
                        output = self.give_present(person, item)
                    elif tool_call.function.name == "stop":
                        output = self.stop()
                        should_stop = True
                    messages.append({"role": "tool", "content": output, "tool_call_id": tool_call.id})
                    if not should_stop:
                        gradio_messages.append(ChatMessage(role="assistant", content=output, metadata={"title": f"🔧 Tool Output: {tool_call.function.name}"}))
            if should_stop or len(messages) > 10:
                break
        return messages, gradio_messages