from sqlalchemy import Column, Integer, String, JSON, UniqueConstraint, text, Boolean, DateTime, ForeignKey, Numeric
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func
from app.db.base_class import Base

class VehicleType(Base):
    """Jármű főtípusok sémája (Séma-gazda)"""
    __tablename__ = "vehicle_types"
    __table_args__ = {"schema": "data"}

    id = Column(Integer, primary_key=True)
    code = Column(String(30), unique=True, index=True) # car, motorcycle, truck, bus, boat, etc.
    name = Column(String(50)) # Megjelenítendő név
    icon = Column(String(50))
    units = Column(JSON, server_default=text("'{\"power\": \"kW\", \"weight\": \"kg\", \"cargo\": \"m3\"}'::jsonb"))

    features = relationship("FeatureDefinition", back_populates="vehicle_type")
    definitions = relationship("VehicleModelDefinition", back_populates="v_type_rel")

class FeatureDefinition(Base):
    """Globális felszereltség szótár"""
    __tablename__ = "feature_definitions"
    __table_args__ = {"schema": "data"}

    id = Column(Integer, primary_key=True)
    vehicle_type_id = Column(Integer, ForeignKey("data.vehicle_types.id"))
    category = Column(String(50)) # Műszaki, Beltér, Kültér, Multimédia
    name = Column(String(100), nullable=False)
    data_type = Column(String(20), default="boolean")

    vehicle_type = relationship("VehicleType", back_populates="features")

class ModelFeatureMap(Base):
    """Modell-szintű felszereltségi sablon (Alap vs Extra)"""
    __tablename__ = "model_feature_maps"
    __table_args__ = {"schema": "data"}

    model_id = Column(Integer, ForeignKey("data.vehicle_model_definitions.id"), primary_key=True)
    feature_id = Column(Integer, ForeignKey("data.feature_definitions.id"), primary_key=True)
    availability = Column(String(20), default="standard") # standard, optional, accessory
    value = Column(String(100))

class VehicleModelDefinition(Base):
    """MDM Master rekordok"""
    __tablename__ = "vehicle_model_definitions"
    __table_args__ = (
        UniqueConstraint('make', 'technical_code', 'vehicle_type', name='uix_make_tech_type'),
        {"schema": "data"}
    )

    id = Column(Integer, primary_key=True)
    make = Column(String(50), nullable=False, index=True)
    technical_code = Column(String(50), nullable=False, index=True)
    marketing_name = Column(String(100), index=True)
    family_name = Column(String(100))
    
    vehicle_type = Column(String(30), index=True) 
    vehicle_type_id = Column(Integer, ForeignKey("data.vehicle_types.id"))
    vehicle_class = Column(String(50))
    
    # --- LOGISZTIKAI ÉS TECHNIKAI FIX OSZLOPOK (v1.9) ---
    engine_capacity = Column(Integer, index=True)
    power_kw = Column(Integer, index=True)
    max_weight_kg = Column(Integer, index=True) # Össztömeg
    
    axle_count = Column(Integer)                 # Tengelyek száma (Teher/Busz)
    payload_capacity_kg = Column(Integer)        # Teherbírás
    cargo_volume_m3 = Column(Numeric(10, 2))     # Raktér térfogat
    cargo_length_mm = Column(Integer)            # Raktér méretek
    cargo_width_mm = Column(Integer)
    cargo_height_mm = Column(Integer)
    # --------------------------------------------------

    specifications = Column(JSON, server_default=text("'{}'::jsonb"))
    features_json = Column(JSON, server_default=text("'{}'::jsonb")) # Összesített gyorseléréshez
    
    status = Column(String(20), server_default="unverified")
    is_master = Column(Boolean, default=False)
    source = Column(String(50))
    
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())

    v_type_rel = relationship("VehicleType", back_populates="definitions")
    variants = relationship("AssetCatalog", back_populates="master_definition")