modelling/lib/DatabaseModel.ts

/*
 * Copyright (C) Sapphirecode - All Rights Reserved
 * This file is part of Modelling which is released under MIT.
 * See file 'LICENSE' for full license details.
 * Created by Timo Hocker <timo@scode.ovh>, May 2020
 */

import { Persistent } from './Persistent';

export abstract class DatabaseModel extends Persistent {
  public get id (): number {
    return this.get ('id') as number;
  }

  public constructor (id?: number) {
    super ();
    this.properties.id = 'number';
    this.define_properties ();
    for (const prop of Object.keys (this.properties)) {
      if ([
        'string',
        'number',
        'boolean'
      ].indexOf (this.properties[prop]) < 0) {
        throw new Error (
          'property types have to be either string, number or boolean'
        );
      }
    }
    if (typeof id !== 'undefined')
      this.set ('id', id);
  }

  public get (key: string): string|number|boolean {
    return super.get (key) as string|number|boolean;
  }

  public set (key: string, value: string|number|boolean): void {
    super.set (key, value);
  }

  public to_object (): Record<string, string|number|boolean> {
    return super.to_object () as Record<string, string|number|boolean>;
  }

  public abstract async read(): Promise<boolean>;
  public abstract async write(): Promise<boolean>;
  public abstract async delete(): Promise<boolean>;
  protected abstract define_properties(): void;
}