"""Configuration management using Pydantic Settings."""

from pathlib import Path
from pydantic_settings import BaseSettings
from pydantic import Field


class Settings(BaseSettings):
    """Application settings with environment variable overrides."""

    # OpenRouter
    openrouter_api_key: str = Field(default="", env="OPENROUTER_API_KEY")
    openrouter_model: str = Field(
        default="stepfun/step-3.5-flash:free", env="OPENROUTER_MODEL"
    )

    # Discord
    discord_bot_token: str = Field(default="", env="DISCORD_BOT_TOKEN")
    discord_guild_id: str | None = Field(default=None, env="DISCORD_GUILD_ID")

    # Gitea
    gitea_token: str = Field(default="", env="GITEA_TOKEN")
    gitea_owner: str = Field(default="cal", env="GITEA_OWNER")
    gitea_repo: str = Field(default="strat-chatbot", env="GITEA_REPO")
    gitea_base_url: str = Field(
        default="https://git.manticorum.com/api/v1", env="GITEA_BASE_URL"
    )

    # Paths
    data_dir: Path = Field(default=Path("./data"), env="DATA_DIR")
    rules_dir: Path = Field(default=Path("./data/rules"), env="RULES_DIR")
    chroma_dir: Path = Field(default=Path("./data/chroma"), env="CHROMA_DIR")

    # Database
    db_url: str = Field(
        default="sqlite+aiosqlite:///./data/conversations.db", env="DB_URL"
    )

    # Conversation state TTL (seconds)
    conversation_ttl: int = Field(default=1800, env="CONVERSATION_TTL")

    # Vector search
    top_k_rules: int = Field(default=10, env="TOP_K_RULES")
    embedding_model: str = Field(
        default="sentence-transformers/all-MiniLM-L6-v2", env="EMBEDDING_MODEL"
    )

    class Config:
        env_file = ".env"
        env_file_encoding = "utf-8"


settings = Settings()