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"""
직접 DeepSeek API ν˜ΈμΆœμ„ μœ„ν•œ ν΄λΌμ΄μ–ΈνŠΈ κ΅¬ν˜„
"""
import os
import time
import logging
import requests
import json
from typing import Dict, Any, Optional, List

# λ‘œκΉ… μ„€μ •
logger = logging.getLogger("DirectDeepSeek")

class DirectDeepSeekClient:
    """
    DeepSeek APIλ₯Ό 직접 ν˜ΈμΆœν•˜λŠ” ν΄λΌμ΄μ–ΈνŠΈ
    OpenAI ν΄λΌμ΄μ–ΈνŠΈλ₯Ό μš°νšŒν•˜κ³  직접 HTTP μš”μ²­ μ‚¬μš©
    """
    def __init__(self, api_key: str, model_name: str = "deepseek-chat"):
        """
        ν΄λΌμ΄μ–ΈνŠΈ μ΄ˆκΈ°ν™”

        Args:
            api_key: DeepSeek API ν‚€
            model_name: μ‚¬μš©ν•  λͺ¨λΈ 이름 (κΈ°λ³Έκ°’: "deepseek-chat")
        """
        self.api_key = api_key
        self.model_name = model_name
        self.endpoint = os.getenv("DEEPSEEK_ENDPOINT", "https://api.deepseek.com/v1/chat/completions")
        logger.info(f"DirectDeepSeekClient μ΄ˆκΈ°ν™”: λͺ¨λΈ={model_name}, μ—”λ“œν¬μΈνŠΈ={self.endpoint}")

    def generate(self,
                 prompt: str,
                 temperature: float = 0.3,
                 max_tokens: int = 1000,
                 max_retries: int = 3,
                 timeout: int = 60) -> Dict[str, Any]:
        """
        ν…μŠ€νŠΈ 생성 μš”μ²­

        Args:
            prompt: μž…λ ₯ ν”„λ‘¬ν”„νŠΈ
            temperature: 생성 μ˜¨λ„ (0.0 ~ 1.0)
            max_tokens: μ΅œλŒ€ 생성 토큰 수
            max_retries: μž¬μ‹œλ„ 횟수
            timeout: μš”μ²­ νƒ€μž„μ•„μ›ƒ (초)

        Returns:
            생성 κ²°κ³Ό λ”•μ…”λ„ˆλ¦¬ (success, response, message λ“±)
        """
        # λ©”μ‹œμ§€ ꡬ성 (단일 μ‚¬μš©μž λ©”μ‹œμ§€)
        messages = [{"role": "user", "content": prompt}]
        return self.chat(messages, temperature, max_tokens, max_retries, timeout)

    def chat(self,
             messages: List[Dict[str, str]],
             temperature: float = 0.3,
             max_tokens: int = 1000,
             max_retries: int = 3,
             timeout: int = 60) -> Dict[str, Any]:
        """
        μ±„νŒ… API 호좜

        Args:
            messages: μ±„νŒ… λ©”μ‹œμ§€ 리슀트 (role, content ν‚€λ₯Ό κ°€μ§„ λ”•μ…”λ„ˆλ¦¬ 리슀트)
            temperature: 생성 μ˜¨λ„ (0.0 ~ 1.0)
            max_tokens: μ΅œλŒ€ 생성 토큰 수
            max_retries: μž¬μ‹œλ„ 횟수
            timeout: μš”μ²­ νƒ€μž„μ•„μ›ƒ (초)

        Returns:
            생성 κ²°κ³Ό λ”•μ…”λ„ˆλ¦¬ (success, response, message λ“±)
        """
        # API μš”μ²­ 헀더 및 데이터
        headers = {
            "Content-Type": "application/json",
            "Authorization": f"Bearer {self.api_key}"
        }

        payload = {
            "model": self.model_name,
            "messages": messages,
            "temperature": temperature,
            "max_tokens": max_tokens
        }

        # μž¬μ‹œλ„ 둜직
        retry_delay = 1.0
        attempt = 0

        while attempt < max_retries:
            attempt += 1
            try:
                logger.info(f"DeepSeek API μš”μ²­ μ‹œλ„ ({attempt}/{max_retries})...")

                # API μš”μ²­ 전솑
                response = requests.post(
                    self.endpoint,
                    headers=headers,
                    json=payload,
                    timeout=timeout
                )

                # 응닡 확인
                if response.status_code == 200:
                    result = response.json()

                    # 응닡 λ‚΄μš© μΆ”μΆœ
                    if "choices" in result and len(result["choices"]) > 0:
                        message_content = result["choices"][0].get("message", {}).get("content", "")
                        logger.info(f"DeepSeek API 응닡 성곡 (길이: {len(message_content)})")

                        return {
                            "success": True,
                            "response": message_content,
                            "status_code": response.status_code,
                            "raw_response": result
                        }
                    else:
                        logger.warning(f"DeepSeek API 응닡은 μ„±κ³΅ν–ˆμœΌλ‚˜ μ˜ˆμƒμΉ˜ λͺ»ν•œ 응닡 ν˜•μ‹: {result}")
                        return {
                            "success": False,
                            "message": "μ‘λ‹΅μ—μ„œ λ©”μ‹œμ§€λ₯Ό 찾을 수 μ—†μŠ΅λ‹ˆλ‹€",
                            "status_code": response.status_code,
                            "raw_response": result
                        }
                else:
                    logger.error(f"DeepSeek API 였λ₯˜: μƒνƒœ μ½”λ“œ {response.status_code}")

                    # 였λ₯˜ λ©”μ‹œμ§€ μΆ”μΆœ
                    error_message = ""
                    try:
                        error_data = response.json()
                        error_message = error_data.get("error", {}).get("message", str(error_data))
                    except:
                        error_message = response.text

                    # μš”μ²­ ν•œλ„ μ΄ˆκ³Όμ‹œ 더 였래 λŒ€κΈ°
                    if response.status_code == 429:
                        retry_delay = min(retry_delay * 3, 15)
                    else:
                        retry_delay = min(retry_delay * 2, 10)

                    if attempt < max_retries:
                        logger.info(f"{retry_delay}초 ν›„ μž¬μ‹œλ„...")
                        time.sleep(retry_delay)
                    else:
                        # λͺ¨λ“  μ‹œλ„ μ‹€νŒ¨
                        return {
                            "success": False,
                            "message": f"API 였λ₯˜: {error_message}",
                            "status_code": response.status_code
                        }

            except requests.exceptions.Timeout:
                logger.error("DeepSeek API μš”μ²­ μ‹œκ°„ 초과")

                if attempt < max_retries:
                    logger.info(f"{retry_delay}초 ν›„ μž¬μ‹œλ„...")
                    time.sleep(retry_delay)
                    retry_delay = min(retry_delay * 2, 10)
                else:
                    return {
                        "success": False,
                        "message": "API μš”μ²­ μ‹œκ°„ 초과",
                        "status_code": None
                    }

            except requests.exceptions.ConnectionError:
                logger.error("DeepSeek API μ—°κ²° μ‹€νŒ¨")

                if attempt < max_retries:
                    logger.info(f"{retry_delay}초 ν›„ μž¬μ‹œλ„...")
                    time.sleep(retry_delay)
                    retry_delay = min(retry_delay * 2, 10)
                else:
                    return {
                        "success": False,
                        "message": "API μ„œλ²„ μ—°κ²° μ‹€νŒ¨",
                        "status_code": None
                    }

            except Exception as e:
                logger.error(f"DeepSeek API μš”μ²­ 쀑 μ˜ˆμƒμΉ˜ λͺ»ν•œ 였λ₯˜: {e}")

                if attempt < max_retries:
                    logger.info(f"{retry_delay}초 ν›„ μž¬μ‹œλ„...")
                    time.sleep(retry_delay)
                    retry_delay = min(retry_delay * 2, 10)
                else:
                    return {
                        "success": False,
                        "message": f"μ˜ˆμƒμΉ˜ λͺ»ν•œ 였λ₯˜: {str(e)}",
                        "status_code": None
                    }

        # λͺ¨λ“  μ‹œλ„ μ‹€νŒ¨
        return {
            "success": False,
            "message": "μ΅œλŒ€ μž¬μ‹œλ„ 횟수 초과",
            "status_code": None
        }

    def system_prompt_chat(self,
                           system_prompt: str,
                           user_prompt: str,
                           temperature: float = 0.3,
                           max_tokens: int = 1000,
                           max_retries: int = 3,
                           timeout: int = 60) -> Dict[str, Any]:
        """
        μ‹œμŠ€ν…œ ν”„λ‘¬ν”„νŠΈμ™€ μ‚¬μš©μž ν”„λ‘¬ν”„νŠΈλ₯Ό μ΄μš©ν•œ μ±„νŒ… API 호좜

        Args:
            system_prompt: μ‹œμŠ€ν…œ ν”„λ‘¬ν”„νŠΈ
            user_prompt: μ‚¬μš©μž ν”„λ‘¬ν”„νŠΈ
            temperature: 생성 μ˜¨λ„ (0.0 ~ 1.0)
            max_tokens: μ΅œλŒ€ 생성 토큰 수
            max_retries: μž¬μ‹œλ„ 횟수
            timeout: μš”μ²­ νƒ€μž„μ•„μ›ƒ (초)

        Returns:
            생성 κ²°κ³Ό λ”•μ…”λ„ˆλ¦¬
        """
        messages = [
            {"role": "system", "content": system_prompt},
            {"role": "user", "content": user_prompt}
        ]

        return self.chat(messages, temperature, max_tokens, max_retries, timeout)


# 단독 싀행을 μœ„ν•œ ν…ŒμŠ€νŠΈ μ½”λ“œ
if __name__ == "__main__":
    # λ‘œκΉ… μ„€μ •
    logging.basicConfig(level=logging.INFO)

    # API ν‚€ 확인
    api_key = os.environ.get("DEEPSEEK_API_KEY")
    if not api_key:
        print("ν™˜κ²½ λ³€μˆ˜ DEEPSEEK_API_KEYκ°€ μ„€μ •λ˜μ§€ μ•Šμ•˜μŠ΅λ‹ˆλ‹€.")
        exit(1)

    # ν΄λΌμ΄μ–ΈνŠΈ 생성
    client = DirectDeepSeekClient(api_key)

    # κ°„λ‹¨ν•œ ν…ŒμŠ€νŠΈ
    response = client.generate("Hello, what can you do?")

    # κ²°κ³Ό 좜λ ₯
    if response["success"]:
        print("응닡 성곡!")
        print(response["response"])
    else:
        print(f"응닡 μ‹€νŒ¨: {response['message']}")