"""General application settings."""

import os
from pydantic import Field
from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    """Application settings."""

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

    # --- General Settings ---

    # Preprocessing configuration file path.
    PP_CONFIG_PATH: str = Field(
        "src/pp-config.yaml",
        description="Path to the preprocessing configuration YAML file.",
    )

    # SQLite database file path.
    # For in memory, use ":memory:" (not persistent).
    # Uses DATA_DIR environment variable for Azure persistent storage
    DB_PATH: str = Field(
        default_factory=lambda: os.path.join(
            os.environ.get("DATA_DIR", "data"), "database.sqlite"
        ),
        description="Path to the SQLite database.",
    )

    # --- Database Query Settings ---

    # Maximum number of rows to return from SQL queries.
    SQL_ROW_LIMIT: int = Field(
        default=50,
        description="Maximum number of rows to return from SQL queries. Defaults to 50.",
    )

    # --- API Keys ---

    # Preprocessor API key to access this app.
    PP_API_KEY: str = Field(
        ..., description="API key to access this app for preprocessing."
    )

    # API key needed to access the endpoint that queries the database.
    DB_ENDPOINT_API_KEY: str = Field(
        ..., description="API key needed to access the database query endpoint."
    )

    # --- Power BI Settings ---

    # Power BI base URL.
    POWERBI_BASE_URL: str = Field(
        "https://api.powerbi.com/v1.0/myorg",
        # "https://api.powerbigov.us/v1.0/myorg",  # Rare: US Gov Cloud
        # "https://api.powerbi.de/v1.0/myorg",  # Rare: Germany
        # "https://api.powerbi.cn/v1.0/myorg",  # Rare: China
        description="Base URL for Power BI REST API.",
    )

    # Power BI authority base.
    POWERBI_AUTHORITY_BASE: str = Field(
        "https://login.microsoftonline.com",
        description="Base URL for Power BI authority.",
    )

    # Power BI Dataset ID.
    POWERBI_DATASET_ID: str = Field(
        ..., description="Power BI Dataset ID to read data from."
    )

    # Power BI Tenant ID.
    POWERBI_TENANT_ID: str = Field(
        ..., description="Azure AD Tenant ID for Power BI authentication."
    )

    # Power BI Client ID.
    POWERBI_CLIENT_ID: str = Field(
        ..., description="Azure AD Client ID for Power BI authentication."
    )

    # Power BI Client Secret.
    POWERBI_CLIENT_SECRET: str = Field(
        ..., description="Azure AD Client Secret for Power BI authentication."
    )


settings = Settings()