frontend/src/app/service/db/Model.ts

import Dexie from 'dexie';
import {DatabaseService} from './database.service';
import {uuid_v4} from '../../utility';

export abstract class Model<InterfaceType> {
    public static dbService?: DatabaseService;

    public id?: number;

    public static getSchema(): string {
        throw new TypeError('Child class must implement.');
    }

    public static getTableName(): string {
        throw new TypeError('Child class must implement.');
    }

    public static getUUID(): string {
        return uuid_v4();
    }

    public abstract getDatabase(): Dexie.Table<InterfaceType, number>;
    public abstract getSaveRecord(): any;

    public staticClass() {
        return (this.constructor as typeof Model);
    }

    public exists() {
        return !!this.id;
    }

    public async save() {
        this.id = await this.getDatabase().put(this.getSaveRecord());
    }
}