"""Notification service"""

from typing import Optional
from sqlalchemy.orm import Session
from app.db.models import Family


class NotificationService:
    """Service for managing notifications"""

    def __init__(self, session: Session):
        self.session = session

    def should_notify(self, family: Family, notification_type: str) -> bool:
        """Check if notification should be sent based on family settings"""
        if family.notification_level == "none":
            return False
        elif family.notification_level == "important":
            return notification_type in ["budget_exceeded", "goal_completed"]
        else:  # all
            return True

    def format_transaction_notification(
        self, user_name: str, amount: float, category: str, account: str
    ) -> str:
        """Format transaction notification message"""
        return (
            f"💰 {user_name} добавил запись:\n"
            f"Сумма: {amount}₽\n"
            f"Категория: {category}\n"
            f"Счет: {account}"
        )

    def format_budget_warning(
        self, budget_name: str, spent: float, limit: float, percent: float
    ) -> str:
        """Format budget warning message"""
        return (
            f"⚠️ Внимание по бюджету!\n"
            f"Бюджет: {budget_name}\n"
            f"Потрачено: {spent}₽ из {limit}₽\n"
            f"Превышено на: {percent:.1f}%"
        )

    def format_goal_progress(
        self, goal_name: str, current: float, target: float, percent: float
    ) -> str:
        """Format goal progress message"""
        return (
            f"🎯 Прогресс цели: {goal_name}\n"
            f"Накоплено: {current}₽ из {target}₽\n"
            f"Прогресс: {percent:.1f}%"
        )

    def format_goal_completed(self, goal_name: str) -> str:
        """Format goal completion message"""
        return f"✅ Цель достигнута! 🎉\n{goal_name}"