import { Component, OnInit, ViewEncapsulation } from '@angular/core';
import { MatSnackBar } from '@angular/material';
import { ActivatedRoute } from '@angular/router';
import { WebSocketTunnel } from '@illgrenoble/guacamole-common-js';
import { NgbModal } from '@ng-bootstrap/ng-bootstrap';
import * as FileSaver from 'file-saver';

import { RemoteDesktopManager } from '../../src/services';
import { ClipboardModalComponent } from './components';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['../../src/themes/default.scss', './app.component.scss'],
    encapsulation: ViewEncapsulation.None,
})
export class AppComponent implements OnInit {
    private manager: RemoteDesktopManager;

    constructor(private ngbModal: NgbModal,
        private snackBar: MatSnackBar) {

    }

    handleScreenshot(): void {
        this.manager.createScreenshot(blob => {
            if (blob) {
                FileSaver.saveAs(blob, `screenshot.png`);
            }
        });
    }

    createModal(classRef) {
        this.manager.setFocused(false);
        const modal = this.ngbModal.open(classRef, {
            size: 'lg',
            windowClass: 'modal-xxl',
            container: '.ngx-remote-desktop',
            keyboard: false
        });
        modal.componentInstance.manager = this.manager;
        return modal;
    }

    handleDisconnect(): void {
        this.manager.getClient().disconnect();
    }

    handleEnterFullScreen() {
        this.manager.setFullScreen(true);
    }

    handleExitFullScreen() {
        this.manager.setFullScreen(false);
    }

    handleClipboard(): void {
        const modal = this.createModal(ClipboardModalComponent);
        modal.result.then((text) => {
            this.manager.setFocused(true);
            if (text) {
                this.manager.sendRemoteClipboardData(text);
                this.snackBar.open('Sent to remote clipboard', 'OK', {
                    duration: 2000,
                });
            }
        }, () => this.manager.setFocused(true));
    }

    handleConnect() {
        const parameters = {
            hostname: '192.168.13.232',
            port: 3389,
            image: 'image/png',
            audio: 'audio/L16',
            dpi: 96,
            width: window.screen.width,
            height: window.screen.height
        };
        /*
         * The manager will establish a connection to: 
         * ws://localhost:8080?ws?ip={address}&image=image/png&audio=audio/L16&dpi=96&width=n&height=n
         */
        this.manager.connect(parameters);
    }

    ngOnInit() {
        // Setup tunnel. The tunnel can be either: WebsocketTunnel, HTTPTunnel or ChainedTunnel
        const tunnel = new WebSocketTunnel('ws://localhost:8080/ws');
        /**
         *  Create an instance of the remote desktop manager by 
         *  passing in the tunnel
         */
        this.manager = new RemoteDesktopManager(tunnel);
        this.handleConnect();
        this.manager.onRemoteClipboardData.subscribe(text => {
            const snackbar = this.snackBar.open('Received from remote clipboard', 'OPEN CLIPBOARD', {
                duration: 1500,
            });
            snackbar.onAction().subscribe(() => this.handleClipboard());
        });
        this.manager.onReconnect.subscribe(reconnect => this.handleConnect());

    }

}