from functools import lru_cache
from urllib.parse import quote_plus

from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    model_config = SettingsConfigDict(
        env_file=".env",
        env_file_encoding="utf-8",
        extra="ignore",
    )

    mysql_host: str = "localhost"
    mysql_port: int = 3306
    mysql_user: str = "boot"
    mysql_password: str = "888888"
    mysql_database: str = "wordloop"

    deepseek_api_key: str = ""
    deepseek_base_url: str = "https://api.deepseek.com"
    deepseek_model: str = "deepseek-chat"
    ai_wiki_daily_llm_limit: int = 20

    tkmind_tts_base_url: str = "https://asr.tkmind.cn"
    tkmind_tts_enabled: bool = True
    tkmind_tts_spk_id: str = "aitong"
    tkmind_tts_timeout: int = 20

    @property
    def database_url(self) -> str:
        user = quote_plus(self.mysql_user)
        password = quote_plus(self.mysql_password)
        return (
            f"mysql+pymysql://{user}:{password}"
            f"@{self.mysql_host}:{self.mysql_port}/{self.mysql_database}"
            "?charset=utf8mb4"
        )


@lru_cache
def get_settings() -> Settings:
    return Settings()