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import os
import platform
import uuid
from typing import List, Dict

import httpx
from dotenv import load_dotenv
from pydantic_settings import BaseSettings

load_dotenv()


class Settings(BaseSettings):
    TIMEZONE: str = "Asia/Shanghai"
    READY_REFRESH_TOKEN: str = os.getenv('READY_REFRESH_TOKEN', '')
    READY_TOKEN: str = os.getenv('READY_TOKEN', '')

    APP_SECRET: str = os.getenv('APP_SECRET', '')
    TOKEN: str = os.getenv('TOKEN', '')
    PROJECT_NAME: str = os.getenv('PROJECT_NAME', 'FastAPI')
    DESCRIPTION: str = os.getenv('DESCRIPTION', 'FastAPI template')
    FIREBASE_API_KEY: str = os.getenv('FIREBASE_API_KEY', '')
    REFRESH_TOKEN: str = os.getenv('REFRESH_TOKEN', '')
    AUTHORIZATION_TOKEN: str = os.getenv('AUTHORIZATION_TOKEN', '')

    ALLOWED_MODELS: List[Dict[str, str]] = [
        {"id": "o1-mini", "name": "o1-mini[merlin]"},
        {"id": "claude-3.5-sonnet", "name": "Claude 3.5 Sonnet[merlin]"},
        {"id": "gpt-4o-64k-output", "name": "GPT 4o (Longer Output)[merlin]"},
        {"id": "gemini-1.5-pro", "name": "Gemini 1.5 Pro[merlin]"},
        {"id": "gpt-4o", "name": "GPT 4o[merlin]"},
        {"id": "meta-llama/Meta-Llama-3.1-405B-Instruct", "name": "Llama 3.1 405B[merlin]"},
        {"id": "claude-3.5-haiku", "name": "Claude 3.5 Haiku[merlin]"},
        {"id": "claude-3-haiku", "name": "Claude 3 Haiku[merlin]"},
        {"id": "gemini-1.5-flash", "name": "Gemini 1.5 Flash[merlin]"},
        {"id": "gpt-4o-mini", "name": "GPT 4o mini[merlin]"},
        {"id": "deepseek-chat", "name": "DeepSeek V3[merlin]"},
        {"id": "o1", "name": "O1[merlin]"},
        {"id": "o1-preview", "name": "O1 Preview[merlin]"},
        {"id": "mistral-large-latest", "name": "Mistral Large[merlin]"},
        {"id": "claude-3-opus", "name": "Claude 3 Opus[merlin]"},
        {"id": "claude-3-sonnet", "name": "Claude 3 Sonnet[merlin]"},
        {"id": "mistralai/Mixtral-8x7B-Instruct-v0.1", "name": "Mixtral[merlin]"},
        {"id": "gpt-3.5-turbo", "name": "GPT 3.5[merlin]"},
    ]
    MODEL_MAPPING: Dict[str, str] = {
        "gpt-4o": "gpt-4o",
        "o1-preview": "o1-preview",
        "claude-3-5-sonnet": "claude-3-5-sonnet",
        "o1-mini": "o1-mini",
        "gemini-1.5-pro": "gemini-1.5-pro",
        "gemini-2.0-flash": "gemini-2.0-flash",
    }
    HEADERS: Dict[str, str] = {
        "authorization": f"Bearer {os.getenv('TOKEN', '')}",
        "accept": "text/event-stream, text/event-stream",
        "content-type": "application/json",
        "x-merlin-version": "web-merlin",
        "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36",
        "origin": "https://www.getmerlin.in",
        "referer": "https://www.getmerlin.in/"
    }

    class Config:
        env_file = '.env'
        case_sensitive = True

_settings = None

def get_settings():
    global _settings
    if _settings is None:
        _settings = Settings()
    return _settings