"""User quota service for plan-based monthly limits."""
from __future__ import annotations

from sqlalchemy.ext.asyncio import AsyncSession

from app.repositories.usage_repository import UsageRepository

PLAN_MONTHLY_LIMITS = {
    "free": 10.0,
    "basic": 50.0,
    "pro": 200.0,
    "enterprise": 1000.0,
}


class UserQuotaService:
    """Service for checking user quota based on subscription plan."""

    def __init__(self, session: AsyncSession | None = None):
        self._session = session
        self._repository = UsageRepository(session) if session else None

    def get_monthly_limit(self, user_plan: str) -> float:
        """Get monthly cost limit based on user plan."""
        return PLAN_MONTHLY_LIMITS.get(user_plan, PLAN_MONTHLY_LIMITS["free"])

    async def check_quota_with_plan(
        self,
        user_id: str,
        user_plan: str,
    ) -> dict:
        """Check quota using the limit from user plan."""
        if not self._repository:
            raise RuntimeError("UserQuotaService not initialized with AsyncSession")

        monthly_limit = self.get_monthly_limit(user_plan)
        return await self._repository.check_quota(user_id, monthly_limit=monthly_limit)