import { Directive, ViewContainerRef, Input, OnInit, Output, EventEmitter } from "@angular/core";

declare var jQuery: any;

/**
 * Implementation of Semantic UI Visibility
 *
 * @link http://semantic-ui.com/behaviors/visibility.html
 */
@Directive({
    selector: "[smDirVisibility]"
})
export class SMVisibilityDirective implements OnInit {

    @Input() smDirVisibility: {};
    @Output() onTopVisible: EventEmitter<{}> = new EventEmitter<{}>();
    @Output() onTopPassed: EventEmitter<{}> = new EventEmitter<{}>();
    @Output() onUpdate: EventEmitter<{}> = new EventEmitter<{}>();

    constructor(public element: ViewContainerRef) {}

    ngOnInit(): void {

        if (this.element.element.nativeElement) {
            jQuery(this.element.element.nativeElement)
                .visibility({
                    onTopPassed: (calculations: {}) => this.onTopPassed.emit(calculations),
                    onTopVisible: (calculations: {}) => this.onTopVisible.emit(calculations),
                    onUpdate: (calculations: {}) => this.onUpdate.emit(calculations),
                });
        }
    }
}

/**
 * Custom Implementation of Semantic UI Device Visibility
 *
 * @link http://semantic-ui.com/collections/grid.html#device-visibility
 */
@Directive({
    selector: "[smDeviceVisibility]"
})
export class SMDeviceVisibilityDirective implements OnInit {

    @Input() smDeviceVisibility: string;

    constructor(public element: ViewContainerRef) {}

    ngOnInit(): void {
        this.element.element.nativeElement.classList.add(...this.smDeviceVisibility.split(" "));
    }
}