import os
import requests
import time

class LLMDriver:
    name = "base"

    def generate_code(self, task: str) -> str:
        raise NotImplementedError


class GroqDriver(LLMDriver):
    name = "groq"

    def __init__(self):
        self.api_key = os.getenv("GROQ_API_KEY")
        self.endpoint = "https://api.groq.com/openai/v1/chat/completions"
        self.model = os.getenv("GROQ_MODEL", "llama-3.1-8b-instant")

    def generate_code(self, task):
        headers = {
            "Authorization": f"Bearer {self.api_key}",
            "Content-Type": "application/json"
        }

        payload = {
            "model": self.model,
            "messages": [{"role": "user", "content": task}],
            "max_tokens": 300,
            "temperature": 0.2
        }

        r = requests.post(self.endpoint, headers=headers, json=payload, timeout=30)
        r.raise_for_status()
        return r.json()["choices"][0]["message"]["content"]


class OpenAIDriver(LLMDriver):
    name = "openai"

    def __init__(self):
        self.api_key = os.getenv("OPENAI_API_KEY")
        self.endpoint = "https://api.openai.com/v1/chat/completions"
        self.model = os.getenv("OPENAI_MODEL", "gpt-4o-mini")

    def generate_code(self, task):
        headers = {
            "Authorization": f"Bearer {self.api_key}",
            "Content-Type": "application/json"
        }

        payload = {
            "model": self.model,
            "messages": [{"role": "user", "content": task}],
            "max_tokens": 300,
            "temperature": 0.2
        }

        r = requests.post(self.endpoint, headers=headers, json=payload, timeout=30)
        r.raise_for_status()
        return r.json()["choices"][0]["message"]["content"]


class HuggingFaceDriver(LLMDriver):
    name = "huggingface"

    def __init__(self):
        self.api_key = os.getenv("HF_API_TOKEN")
        self.model = os.getenv("HF_MODEL", "meta-llama/Meta-Llama-3-8B-Instruct")
        self.endpoint = f"https://api-inference.huggingface.co/models/{self.model}"

    def generate_code(self, task):
        headers = {"Authorization": f"Bearer {self.api_key}"}
        payload = {"inputs": task}

        r = requests.post(self.endpoint, headers=headers, json=payload, timeout=30)
        r.raise_for_status()
        data = r.json()

        if isinstance(data, list):
            return data[0].get("generated_text", "")
        return data.get("generated_text", "")