mbroersen / jeloquent

export default class BelongsTo extends Relation {

    constructor(model: ModelStaticInterface, foreignKey: string|null = null, name: string = null) {

        super(model, (foreignKey ?? `${model.snakeCaseClassName}_id`), name);

    }

    get originalValue() {

        return this.model.find(this.$parent[`original_${this.foreignKey}`]);

    }

    get value() {

        return this.model.find(this.$parent[this.foreignKey]);

    }

    setName(): BelongsTo {

        const className = this.model.snakeCaseClassName;

        this.$name = this.$name ?? `${className}`;

        return this;

    }

    protected setParentProperties() {

        super.setParentProperties();

        let name = '';

        for (const namePart of this.$name.split('_')) {

            name += namePart[0].toUpperCase() + namePart.slice(1);

        }

        //TODO remove

        Object.defineProperty(this.$parent,

            `has${name}`, {

                get: () => {

                    return this.value !== null;

                },

            }

        )

        return this;

    }

}