"""
Constants API Endpoint
======================
Serves static dictionaries (vehicle features, drive types, etc.)
to the frontend so it doesn't need to hardcode them.
"""
from fastapi import APIRouter, Query
from app.constants.vehicle_features import (
    CAR_FEATURES,
    CAR_DRIVE_TYPES,
    CAR_TRANSMISSION_TYPES,
    CAR_AC_TYPES,
    CAR_BODY_TYPES,
    AC_CONNECTOR_TYPES,
    DC_CONNECTOR_TYPES,
    MOTORCYCLE_STROKES,
    MOTORCYCLE_COOLING,
    MOTORCYCLE_MIXTURE,
    MOTORCYCLE_FEATURES,
    LCV_BODY_TYPES,
    LCV_FEATURES,
    HGV_TRANSMISSION_TYPES,
    HGV_PTO_TYPES,
    HGV_BODY_TYPES,
    HGV_FEATURES,
)

router = APIRouter()


@router.get("/vehicle-features")
async def get_vehicle_features(
    type: str = Query(None, description="Filter by vehicle type: 'car', 'motorcycle', 'lcv' or 'hgv'")
):
    """Return all vehicle feature dictionaries for frontend use.
    
    If ?type=motorcycle is provided, returns motorcycle-specific data.
    If ?type=lcv is provided, returns LCV-specific data.
    If ?type=hgv is provided, returns HGV-specific data.
    Otherwise returns car-specific data.
    """
    if type == "motorcycle":
        return {
            **MOTORCYCLE_FEATURES,  # Spread categories directly: technical, frame_body, luggage, multimedia, other
            "drive_types": CAR_DRIVE_TYPES,
            "transmission_types": CAR_TRANSMISSION_TYPES,
            "ac_types": {},  # No AC types for motorcycles
            "body_types": {},  # No body types for motorcycles
            "ac_connector_types": AC_CONNECTOR_TYPES,
            "dc_connector_types": DC_CONNECTOR_TYPES,
            "motorcycle_strokes": MOTORCYCLE_STROKES,
            "motorcycle_cooling": MOTORCYCLE_COOLING,
            "motorcycle_mixture": MOTORCYCLE_MIXTURE,
        }
    
    if type == "lcv":
        return {
            **LCV_FEATURES,  # Spread categories directly: technical, interior, exterior, multimedia
            "drive_types": CAR_DRIVE_TYPES,
            "transmission_types": CAR_TRANSMISSION_TYPES,
            "ac_types": CAR_AC_TYPES,
            "body_types": LCV_BODY_TYPES,
            "ac_connector_types": AC_CONNECTOR_TYPES,
            "dc_connector_types": DC_CONNECTOR_TYPES,
        }
    
    if type == "hgv":
        return {
            **HGV_FEATURES,  # Spread categories directly: technical_work, cabin, multimedia
            "drive_types": CAR_DRIVE_TYPES,
            "transmission_types": HGV_TRANSMISSION_TYPES,
            "pto_types": HGV_PTO_TYPES,
            "ac_types": CAR_AC_TYPES,
            "body_types": HGV_BODY_TYPES,
            "ac_connector_types": AC_CONNECTOR_TYPES,
            "dc_connector_types": DC_CONNECTOR_TYPES,
        }
    
    return {
        **CAR_FEATURES,  # Spread categories directly: technical, interior, exterior, multimedia, other
        "drive_types": CAR_DRIVE_TYPES,
        "transmission_types": CAR_TRANSMISSION_TYPES,
        "ac_types": CAR_AC_TYPES,
        "body_types": CAR_BODY_TYPES,
        "ac_connector_types": AC_CONNECTOR_TYPES,
        "dc_connector_types": DC_CONNECTOR_TYPES,
    }