# /opt/docker/dev/service_finder/backend/app/models/system.py
import uuid
from datetime import datetime
from enum import Enum
from typing import Optional
from sqlalchemy import String, Integer, Boolean, DateTime, text, UniqueConstraint, ForeignKey, Text, Enum as SQLEnum
from sqlalchemy.orm import Mapped, mapped_column
from sqlalchemy.dialects.postgresql import JSONB, UUID
from sqlalchemy.sql import func
from app.database import Base

class ParameterScope(str, Enum):
    GLOBAL = "global"
    COUNTRY = "country"
    REGION = "region"
    USER = "user"

class SystemParameter(Base):
    """ Dinamikus konfigurációs motor (Global -> Org -> User). """
    __tablename__ = "system_parameters"
    __table_args__ = (
        UniqueConstraint('key', 'scope_level', 'scope_id', name='uix_param_scope'),
        {"schema": "system", "extend_existing": True}
    )

    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    key: Mapped[str] = mapped_column(String, index=True)
    category: Mapped[str] = mapped_column(String, server_default="general", index=True)
    value: Mapped[dict] = mapped_column(JSONB, nullable=False)
    
    scope_level: Mapped[ParameterScope] = mapped_column(SQLEnum(ParameterScope, name="parameter_scope"), server_default=ParameterScope.GLOBAL.value, index=True)
    scope_id: Mapped[Optional[str]] = mapped_column(String(50))
    
    is_active: Mapped[bool] = mapped_column(Boolean, default=True)
    description: Mapped[Optional[str]] = mapped_column(String)
    last_modified_by: Mapped[Optional[int]] = mapped_column(Integer, nullable=True)
    updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), onupdate=func.now(), server_default=func.now())

class InternalNotification(Base):
    """ 
    Belső értesítési központ. 
    Ezek az üzenetek várják a felhasználót belépéskor.
    """
    __tablename__ = "internal_notifications"
    __table_args__ = ({"schema": "system", "extend_existing": True})

    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    user_id: Mapped[int] = mapped_column(ForeignKey("identity.users.id", ondelete="CASCADE"), nullable=False, index=True)
    
    title: Mapped[str] = mapped_column(String(255), nullable=False)
    message: Mapped[str] = mapped_column(Text, nullable=False)
    category: Mapped[str] = mapped_column(String(50), server_default="info") # insurance, mot, service, legal
    priority: Mapped[str] = mapped_column(String(20), server_default="medium") # low, medium, high, critical
    
    is_read: Mapped[bool] = mapped_column(Boolean, default=False, index=True)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())
    read_at: Mapped[Optional[datetime]] = mapped_column(DateTime(timezone=True), nullable=True)
    
    # Metaadatok a gyors eléréshez (melyik autó, melyik VIN)
    data: Mapped[Optional[dict]] = mapped_column(JSONB, nullable=True)