mbroersen / jeloquent

import Relation from "../Relation.js";

import {ModelStaticInterface} from "../../../JeloquentInterfaces";

import ForeignKey from "../Field/ForeignKey";

/**

 *

 */

export default class HasOne extends Relation {

    constructor(model: ModelStaticInterface) {

        super(model);

    }

    get originalValue(): unknown {

        return this.getValueByParentKey('originalPrimaryKey');

    }

    get value(): unknown {

        return this.getValueByParentKey('primaryKey');

    }

    getRelationalFields():Array<ForeignKey> {

        return [];

    }

    setName(): HasOne {

        this.foreignKey = `${this.$parent.snakeCaseClassName}_id`;

        return this;

    }

    protected setParentProperties(): HasOne {

        super.setParentProperties();

        Object.defineProperty(this.$parent,

            `has${this.model.className}`, {

                get: () => {

                    return this.value !== null;

                },

            }

        )

        return this;

    }

    private getValueByParentKey(parentProperty) {

        const keyIndex = this.model.getIndexByKey(this.foreignKey);

        return globalThis.Store.database().find(this.model.className,

            [...keyIndex.get(this.$parent[parentProperty])?.values() ?? []]

        ).first();

    }

}