import {getMethods} from "../Utils.js";
import Model from "./Model.js";
import {ModelFieldData} from "./ModelQuery.js";
import Validator from "./Validator.js";

export default abstract class ModelComponent<M extends Model> {
    protected readonly _model: M;
    private readonly _validators: { [K in keyof this]?: Validator<this[K]> } = {};

    [key: string]: ModelFieldData;

    public constructor(model: M) {
        this._model = model;
    }

    public applyToModel(): void {
        this.init?.();

        const model = this._model as Model;

        for (const property of this._properties) {
            if (!property.startsWith('_')) {
                model[property] = this[property];
                model['_validators'][property] = this._validators[property] as Validator<ModelFieldData> | undefined;
            }
        }

        for (const method of getMethods(this)) {
            if (!method.startsWith('_') &&
                ['init', 'setValidation'].indexOf(method) < 0 &&
                model[method] === undefined) {
                model[method] = this[method];
            }
        }
    }

    protected init?(): void;

    protected setValidation<K extends keyof this>(propertyName: K): Validator<this[K]> {
        const validator = new Validator<this[K]>();
        this._validators[propertyName] = validator;
        return validator;
    }

    private get _properties(): string[] {
        return Object.getOwnPropertyNames(this).filter(p => !p.startsWith('_'));
    }
}