# services/sales/app/core/config.py
"""
Sales Service Configuration
"""

import os
from typing import List
from pydantic import Field
from shared.config.base import BaseServiceSettings


class Settings(BaseServiceSettings):
    """Sales service settings extending base configuration"""
    
    # Override service-specific settings
    SERVICE_NAME: str = "sales-service"
    VERSION: str = "1.0.0"
    APP_NAME: str = "Bakery Sales Service"
    DESCRIPTION: str = "Sales data management and analytics service"
    
    # API Configuration
    API_V1_STR: str = "/api/v1"
    
    # Database configuration (secure approach - build from components)
    @property
    def DATABASE_URL(self) -> str:
        """Build database URL from secure components"""
        # Try complete URL first (for backward compatibility)
        complete_url = os.getenv("SALES_DATABASE_URL")
        if complete_url:
            return complete_url

        # Build from components (secure approach)
        user = os.getenv("SALES_DB_USER", "sales_user")
        password = os.getenv("SALES_DB_PASSWORD", "sales_pass123")
        host = os.getenv("SALES_DB_HOST", "localhost")
        port = os.getenv("SALES_DB_PORT", "5432")
        name = os.getenv("SALES_DB_NAME", "sales_db")

        return f"postgresql+asyncpg://{user}:{password}@{host}:{port}/{name}"
    
    # Sales-specific Redis database
    REDIS_DB: int = Field(default=2, env="SALES_REDIS_DB")
    
    # File upload configuration
    MAX_UPLOAD_SIZE: int = 10 * 1024 * 1024  # 10MB
    UPLOAD_PATH: str = Field(default="/tmp/uploads", env="SALES_UPLOAD_PATH")
    ALLOWED_FILE_EXTENSIONS: List[str] = [".csv", ".xlsx", ".xls"]
    
    # Pagination
    DEFAULT_PAGE_SIZE: int = 50
    MAX_PAGE_SIZE: int = 1000
    
    # Data validation
    MIN_QUANTITY: float = 0.01
    MAX_QUANTITY: float = 10000.0
    MIN_REVENUE: float = 0.01
    MAX_REVENUE: float = 100000.0
    
    # Sales-specific cache TTL (5 minutes)
    SALES_CACHE_TTL: int = 300
    PRODUCT_CACHE_TTL: int = 600  # 10 minutes
    
    # Inter-service communication
    INVENTORY_SERVICE_URL: str = Field(
        default="http://inventory-service:8000",
        env="INVENTORY_SERVICE_URL"
    )


# Global settings instance
settings = Settings()