# app/api/v1/public/vendors/vendors.py
"""
Public vendor information endpoints.

Provides public-facing vendor lookup and information retrieval.
"""

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

from app.core.database import get_db
from models.database.vendor import Vendor

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


@router.get("/by-code/{vendor_code}")
def get_vendor_by_code(
        vendor_code: str = Path(..., description="Vendor code (e.g., TECHSTORE233)"),
        db: Session = Depends(get_db)
):
    """
    Get public vendor information by vendor code.

    This endpoint is used by:
    - Frontend vendor login page to validate vendor existence
    - Customer shop to display vendor information

    Returns basic vendor information (no sensitive data).
    """
    vendor = db.query(Vendor).filter(
        Vendor.vendor_code == vendor_code.upper(),
        Vendor.is_active == True
    ).first()

    if not vendor:
        logger.warning(f"Vendor lookup failed for code: {vendor_code}")
        raise HTTPException(
            status_code=404,
            detail=f"Vendor '{vendor_code}' not found or inactive"
        )

    logger.info(f"Vendor lookup successful: {vendor.vendor_code}")

    # Return public vendor information (no sensitive data)
    return {
        "id": vendor.id,
        "vendor_code": vendor.vendor_code,
        "subdomain": vendor.subdomain,
        "name": vendor.name,
        "description": vendor.description,
        "website": vendor.website,
        "is_active": vendor.is_active,
        "is_verified": vendor.is_verified
    }


@router.get("/by-subdomain/{subdomain}")
def get_vendor_by_subdomain(
        subdomain: str = Path(..., description="Vendor subdomain (e.g., techstore233)"),
        db: Session = Depends(get_db)
):
    """
    Get public vendor information by subdomain.

    Used for subdomain-based vendor detection in production environments.
    Example: techstore233.platform.com -> subdomain is "techstore233"
    """
    vendor = db.query(Vendor).filter(
        Vendor.subdomain == subdomain.lower(),
        Vendor.is_active == True
    ).first()

    if not vendor:
        logger.warning(f"Vendor lookup failed for subdomain: {subdomain}")
        raise HTTPException(
            status_code=404,
            detail=f"Vendor with subdomain '{subdomain}' not found or inactive"
        )

    logger.info(f"Vendor lookup by subdomain successful: {vendor.vendor_code}")

    return {
        "id": vendor.id,
        "vendor_code": vendor.vendor_code,
        "subdomain": vendor.subdomain,
        "name": vendor.name,
        "description": vendor.description,
        "website": vendor.website,
        "is_active": vendor.is_active,
        "is_verified": vendor.is_verified
    }


@router.get("/{vendor_id}/info")
def get_vendor_info(
        vendor_id: int = Path(..., description="Vendor ID"),
        db: Session = Depends(get_db)
):
    """
    Get public vendor information by ID.

    Used when vendor_id is already known (e.g., from URL parameters).
    """
    vendor = db.query(Vendor).filter(
        Vendor.id == vendor_id,
        Vendor.is_active == True
    ).first()

    if not vendor:
        logger.warning(f"Vendor lookup failed for ID: {vendor_id}")
        raise HTTPException(
            status_code=404,
            detail=f"Vendor with ID {vendor_id} not found or inactive"
        )

    return {
        "id": vendor.id,
        "vendor_code": vendor.vendor_code,
        "subdomain": vendor.subdomain,
        "name": vendor.name,
        "description": vendor.description,
        "website": vendor.website,
        "is_active": vendor.is_active,
        "is_verified": vendor.is_verified
    }