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):
    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": "gpt-4o", "name": "GPT-4o [thinkbuddy]"},
        {"id": "claude-3-5-sonnet", "name": "Claude 3.5 Sonnet v2 [thinkbuddy]"},
        {"id": "gemini-2-flash", "name": "Gemini 2 Flash [thinkbuddy]"},
        {"id": "nova-pro", "name": "Nova Pro [thinkbuddy]"},
        {"id": "deepseek-v3", "name": "DeepSeek v3 [thinkbuddy]"},
        {"id": "llama-3-3", "name": "Llama 3.3 (70B) [thinkbuddy]"},
        {"id": "mistral-large-2", "name": "Mistral Large v2 [thinkbuddy]"},
        {"id": "command-r-plus", "name": "Command R+ [thinkbuddy]"},
        {"id": "o1-preview", "name": "o1-preview [thinkbuddy]"},
        {"id": "o1-mini", "name": "o1-mini [thinkbuddy]"},
        {"id": "gemini-2-thinking", "name": "Gemini 2 Thinking [thinkbuddy]"},
        {"id": "claude-3-5-haiku", "name": "Claude 3.5 Haiku [thinkbuddy]"},
        {"id": "gemini-1-5-flash", "name": "Gemini 1.5 Flash [thinkbuddy]"},
        {"id": "gpt-4o-mini", "name": "GPT-4o mini [thinkbuddy]"},
        {"id": "nova-lite", "name": "Nova Lite [thinkbuddy]"},
        {"id": "gemini-1-5-pro", "name": "Gemini 1.5 Pro [thinkbuddy]"},
        {"id": "claude-3-opus", "name": "Claude 3 Opus [thinkbuddy]"},
        {"id": "gpt-4-turbo", "name": "GPT-4 Turbo [thinkbuddy]"},
        {"id": "llama-3-1", "name": "Llama 3.1 [thinkbuddy]"}
    ]
    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] = {
        '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',
        'Accept-Encoding': 'gzip, deflate, br, zstd',
        'Content-Type': 'application/json',
        'sec-ch-ua-platform': 'Windows',
        'authorization': f"Bearer {os.getenv('TOKEN', '')}",
        'sec-ch-ua': '"Google Chrome";v="131", "Chromium";v="131", "Not_A Brand";v="24"',
        'dnt': '1',
        'sec-ch-ua-mobile': '?0',
        'origin': 'https://thinkbuddy.ai',
        'sec-fetch-site': 'same-site',
        'sec-fetch-mode': 'cors',
        'sec-fetch-dest': 'empty',
        'referer': 'https://thinkbuddy.ai/',
        'accept-language': 'en-US,en;q=0.9,zh-CN;q=0.8,zh-TW;q=0.7,zh;q=0.6',
        'priority': 'u=1, i'
    }

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

_settings = None

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