import { Vector2 } from 'touchcontroller';
import { Anchor } from './Anchor';
import { Donor } from './Donor';
import { Rect } from './Rect';

export class Acceptor extends Anchor {
    public donors: Donor[];

    constructor(
        rect: Rect,
        type: string,
        relativePosition: Vector2,
        public accepts: number,
        public order: 'UP' | 'DOWN' | 'KEEP' = 'DOWN',
    ) {
        super(rect, type, relativePosition);
        this.donors = [];
    }

    clone(): Acceptor {
        return new Acceptor(
            this.rect,
            this.type,
            this.relativePosition,
            this.accepts,
            this.order,
        );
    }

    snapDonor(donor: Donor) {
        if (this.donors.indexOf(donor) === -1) {
            //console.log(donor);
            //console.log(`snapDonor`);

            donor.acceptor = this;
            this.donors.push(donor);

            if (this.order === 'UP') {
                //this.rect.svgElement.parentNode.insertBefore(donor.rect.svgElement,this.rect.svgElement);
                orderElements(
                    this.rect.svgGroupElement,
                    donor.rect.svgGroupElement,
                );
            } else if (this.order === 'DOWN') {
                //this.rect.svgElement.parentNode.insertAfter(donor.rect.svgElement,this.rect.svgElement);
                orderElements(
                    this.rect.svgGroupElement,
                    donor.rect.svgGroupElement,
                );
                orderElements(
                    donor.rect.svgGroupElement,
                    this.rect.svgGroupElement,
                );
            }
            /**/
        }
    }

    get full() {
        if (this.accepts === -1) {
            return false;
        } else {
            return this.donors.length >= this.accepts;
        }
    }

    /*fullInsteadOf(donors){

    }*/

    isAccepting(donor: Donor) {
        return this.type === donor.type;
    }

    get followingDonors() {
        return this.donors.filter((donor) => donor.follow);
    }
}

function orderElements(first: SVGElement, second: SVGElement) {
    if (first.parentNode) {
        first.parentNode!.insertBefore(second, first);
    } else {
        console.warn(`first.parentNode do do not exists.`);
    }
} /**/