# Copyright (c) 2025 Patrick Motsch
# All rights reserved.
"""Base Pydantic model with system-managed fields (DB + API + UI metadata)."""

from typing import Dict, Optional, Type

from pydantic import BaseModel, Field

from modules.shared.i18nRegistry import i18nModel

MODEL_REGISTRY: Dict[str, Type["PowerOnModel"]] = {}


def _getModelByTableName(tableName: str) -> Optional[Type["PowerOnModel"]]:
    """Look up a PowerOnModel subclass by its table name (= class name)."""
    return MODEL_REGISTRY.get(tableName)


@i18nModel("Basisdatensatz")
class PowerOnModel(BaseModel):
    """Basis-Datenmodell mit System-Audit-Feldern fuer alle DB-Tabellen."""

    def __init_subclass__(cls, **kwargs):
        super().__init_subclass__(**kwargs)
        MODEL_REGISTRY[cls.__name__] = cls

    sysCreatedAt: Optional[float] = Field(
        default=None,
        description="Record creation timestamp (UTC, set by system)",
        json_schema_extra={
            "label": "Erstellt am",
            "frontend_type": "timestamp",
            "frontend_readonly": True,
            "frontend_required": False,
            "frontend_visible": False,
            "system": True,
        },
    )
    sysCreatedBy: Optional[str] = Field(
        default=None,
        description="User ID who created this record (set by system)",
        json_schema_extra={
            "label": "Erstellt von",
            "frontend_type": "text",
            "frontend_readonly": True,
            "frontend_required": False,
            "frontend_visible": False,
            "system": True,
            "fk_target": {"db": "poweron_app", "table": "UserInDB", "labelField": "username"},
        },
    )
    sysModifiedAt: Optional[float] = Field(
        default=None,
        description="Record last modification timestamp (UTC, set by system)",
        json_schema_extra={
            "label": "Geaendert am",
            "frontend_type": "timestamp",
            "frontend_readonly": True,
            "frontend_required": False,
            "frontend_visible": False,
            "system": True,
        },
    )
    sysModifiedBy: Optional[str] = Field(
        default=None,
        description="User ID who last modified this record (set by system)",
        json_schema_extra={
            "label": "Geaendert von",
            "frontend_type": "text",
            "frontend_readonly": True,
            "frontend_required": False,
            "frontend_visible": False,
            "system": True,
            "fk_target": {"db": "poweron_app", "table": "UserInDB", "labelField": "username"},
        },
    )