// (C) Copyright 2015 Moodle Pty Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import { Directive, Input, OnInit, ElementRef } from '@angular/core';
import { CoreNavigator } from '@services/navigator';

import { CoreObject } from '@singletons/object';

/**
 * Directive to go to user profile on click.
 */
@Directive({
    selector: '[core-user-link]',
})
export class CoreUserLinkDirective implements OnInit {

    @Input() userId?: number; // User id to open the profile.
    @Input() courseId?: number; // If set, course id to show the user info related to that course.

    protected element: HTMLElement;

    constructor(
        element: ElementRef,
    ) {
        this.element = element.nativeElement;
    }

    /**
     * Function executed when the component is initialized.
     */
    ngOnInit(): void {
        this.element.addEventListener('click', (event) => {
            // If the event prevented default action, do nothing.
            if (event.defaultPrevented || !this.userId) {
                return;
            }

            event.preventDefault();
            event.stopPropagation();

            // @todo If this directive is inside a split view, use the split view's master nav.
            CoreNavigator.instance.navigateToSitePath('user', {
                params: CoreObject.withoutEmpty({
                    userId: this.userId,
                    courseId: this.courseId,
                }),
            });
        });
    }

}