import CloneObject from './clone-object.js';

export default class CloneWeakMap extends CloneObject {
	constructor(value, path, argumentsList, hasOnValidate) {
		super(undefined, path, argumentsList, hasOnValidate);

		this._weakKey = argumentsList[0];
		this._weakHas = value.has(this._weakKey);
		this._weakValue = value.get(this._weakKey);
	}

	isChanged(value) {
		return this._weakValue !== value.get(this._weakKey);
	}

	undo(object) {
		const weakHas = object.has(this._weakKey);

		if (this._weakHas && !weakHas) {
			object.set(this._weakKey, this._weakValue);
		} else if (!this._weakHas && weakHas) {
			object.delete(this._weakKey);
		} else if (this._weakValue !== object.get(this._weakKey)) {
			object.set(this._weakKey, this._weakValue);
		}
	}
}