/*
 * Copyright 2018-present Open Networking Foundation
 *
 * 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 {
    AfterContentInit,
    Component,
    HostListener,
    Inject,
    Input,
    OnInit
} from '@angular/core';
import { ViewControllerImpl } from '../viewcontroller';
import {
    FnService,
    LogService,
    PrefsService,
    SvgUtilService, LionService, ZoomUtils, TopoZoomPrefs
} from 'gui2-fw-lib/public_api';

/**
 * ONOS GUI -- Topology No Connected Devices View.
 * View that contains the 'No Connected Devices' message
 *
 * This component is an SVG snippet that expects to be in an SVG element with a view box of 1000x1000
 *
 * It should be added to a template with a tag like <svg:g onos-nodeviceconnected />
 */
@Component({
  selector: '[onos-nodeviceconnected]',
  templateUrl: './nodeviceconnectedsvg.component.html',
  styleUrls: ['./nodeviceconnectedsvg.component.css']
})
export class NoDeviceConnectedSvgComponent extends ViewControllerImpl implements AfterContentInit, OnInit {
    @Input() bannerHeight: number = 48;
    lionFn; // Function
    zoomExtents: TopoZoomPrefs = <TopoZoomPrefs>{
        sc: 1.0, tx: 0, ty: 0
    };

    constructor(
        protected fs: FnService,
        protected log: LogService,
        protected ps: PrefsService,
        protected sus: SvgUtilService,
        private lion: LionService,
        @Inject('Window') public window: any,
    ) {
        super(fs, log, ps);

        if (this.lion.ubercache.length === 0) {
            this.lionFn = this.dummyLion;
            this.lion.loadCbs.set('topo-nodevices', () => this.doLion());
        } else {
            this.doLion();
        }

        this.log.debug('NoDeviceConnectedSvgComponent constructed');
    }

    ngOnInit() {
        this.log.debug('NoDeviceConnectedSvgComponent initialized');
    }

    ngAfterContentInit(): void {
        this.zoomExtents = ZoomUtils.zoomToWindowSize(
            this.bannerHeight, this.window.innerWidth, this.window.innerHeight);
    }

    @HostListener('window:resize', ['$event'])
    onResize(event) {
        this.zoomExtents = ZoomUtils.zoomToWindowSize(
            this.bannerHeight, event.target.innerWidth, event.target.innerHeight);
    }

    /**
     * Read the LION bundle for Details panel and set up the lionFn
     */
    doLion() {
        this.lionFn = this.lion.bundle('core.view.Topo');

    }

    /**
     * A dummy implementation of the lionFn until the response is received and the LION
     * bundle is received from the WebSocket
     */
    dummyLion(key: string): string {
        return '%' + key + '%';
    }
}