# /opt/docker/dev/service_finder/backend/app/api/v1/endpoints/regions.py
"""
🌍 Global Region Registry API Endpoint.

Public endpoint that returns the list of active region configurations.
Used by the frontend to drive locale-aware formatting (dates, numbers, currencies)
and financial calculations (VAT, pricing).

Schema: system.region_config
"""
import logging
from typing import List

from fastapi import APIRouter, Depends
from sqlalchemy.ext.asyncio import AsyncSession
from sqlalchemy import select

from app.api.deps import get_db
from app.models.core_logic import RegionConfig

logger = logging.getLogger(__name__)

router = APIRouter()


@router.get("/regions", response_model=List[dict])
async def list_active_regions(
    db: AsyncSession = Depends(get_db),
):
    """
    GET /api/v1/system/regions

    Returns all active region configurations from the system.region_config table.
    This is a public endpoint (no auth required) used by the frontend to:
    - Format dates, numbers, and currencies according to locale
    - Calculate VAT rates for pricing
    - Determine timezone for date displays
    """
    stmt = select(RegionConfig).where(RegionConfig.is_active == True).order_by(RegionConfig.country_code)
    result = await db.execute(stmt)
    regions = result.scalars().all()

    return [
        {
            "country_code": r.country_code,
            "name": r.name,
            "currency": r.currency,
            "default_vat_rate": r.default_vat_rate,
            "locale_code": r.locale_code,
            "timezone": r.timezone,
            "is_active": r.is_active,
        }
        for r in regions
    ]