# app/api/v1/vendor/info.py
"""
Vendor information endpoints.

This module provides:
- Public vendor information lookup (no auth required)
- Used by vendor login pages to display vendor details
"""

import logging
from fastapi import APIRouter, Path, Depends
from sqlalchemy.orm import Session
from sqlalchemy import func

from app.core.database import get_db
from app.exceptions import VendorNotFoundException
from models.schema.vendor import VendorResponse, VendorDetailResponse
from models.database.vendor import Vendor

router = APIRouter()
logger = logging.getLogger(__name__)


def _get_vendor_by_code(db: Session, vendor_code: str) -> Vendor:
    """
    Helper to get active vendor by vendor_code.

    Args:
        db: Database session
        vendor_code: Vendor code (case-insensitive)

    Returns:
        Vendor object

    Raises:
        VendorNotFoundException: If vendor not found or inactive
    """
    vendor = db.query(Vendor).filter(
        func.upper(Vendor.vendor_code) == vendor_code.upper(),
        Vendor.is_active == True
    ).first()

    if not vendor:
        logger.warning(f"Vendor not found or inactive: {vendor_code}")
        raise VendorNotFoundException(vendor_code, identifier_type="code")

    return vendor


@router.get("/{vendor_code}", response_model=VendorDetailResponse)
def get_vendor_info(
        vendor_code: str = Path(..., description="Vendor code"),
        db: Session = Depends(get_db)
):
    """
    Get public vendor information by vendor code.

    This endpoint is used by the vendor login page to display vendor info.
    No authentication required - this is public information.

    **Use Case:**
    - Vendor login page loads vendor info to display branding
    - Shows vendor name, description, logo, etc.

    **Returns only active vendors** to prevent access to disabled accounts.

    Args:
        vendor_code: The vendor's unique code (e.g., 'WIZAMART')
        db: Database session

    Returns:
        VendorResponse: Public vendor information

    Raises:
        VendorNotFoundException (404): Vendor not found or inactive
    """
    logger.info(f"Public vendor info request: {vendor_code}")

    vendor = _get_vendor_by_code(db, vendor_code)

    logger.info(f"Vendor info retrieved: {vendor.name} ({vendor.vendor_code})")

    return VendorDetailResponse(
        # Vendor fields
        id=vendor.id,
        vendor_code=vendor.vendor_code,
        subdomain=vendor.subdomain,
        name=vendor.name,
        description=vendor.description,
        owner_user_id=vendor.owner_user_id,
        contact_email=vendor.contact_email,
        contact_phone=vendor.contact_phone,
        website=vendor.website,
        business_address=vendor.business_address,
        tax_number=vendor.tax_number,
        letzshop_csv_url_fr=vendor.letzshop_csv_url_fr,
        letzshop_csv_url_en=vendor.letzshop_csv_url_en,
        letzshop_csv_url_de=vendor.letzshop_csv_url_de,
        is_active=vendor.is_active,
        is_verified=vendor.is_verified,
        created_at=vendor.created_at,
        updated_at=vendor.updated_at,
        # Owner details
        owner_email=vendor.owner.email,
        owner_username=vendor.owner.username,
    )