import { Component, OnInit } from "@angular/core";
import { HttpClient } from "@angular/common/http";
import { lastValueFrom } from "rxjs";

import { OpenViduService, TokenModel } from "openvidu-angular";

@Component({
	selector: 'app-root',
	template: `
		<ov-videoconference [tokens]="tokens">
			<div *ovToolbar style="text-align: center;">
				<button (click)="toggleVideo()">Toggle Video</button>
				<button (click)="toggleAudio()">Toggle Audio</button>
			</div>
		</ov-videoconference>
	`
})
export class AppComponent implements OnInit {

	APPLICATION_SERVER_URL = 'http://localhost:5000/';

	sessionId = 'toolbar-directive-example';
	tokens!: TokenModel;

	publishVideo = true;
	publishAudio = true;

	constructor(private httpClient: HttpClient, private openviduService: OpenViduService) { }

	async ngOnInit() {
		this.tokens = {
			webcam: await this.getToken(),
			screen: await this.getToken()
		};
	}

	toggleVideo() {
		this.publishVideo = !this.publishVideo;
		this.openviduService.publishVideo(this.publishVideo);
	}

	toggleAudio() {
		this.publishAudio = !this.publishAudio;
		this.openviduService.publishAudio(this.publishAudio);
	}

	/**
	 * --------------------------------------------
	 * GETTING A TOKEN FROM YOUR APPLICATION SERVER
	 * --------------------------------------------
	 * The methods below request the creation of a Session and a Token to
	 * your application server. This keeps your OpenVidu deployment secure.
	 * 
	 * In this sample code, there is no user control at all. Anybody could
	 * access your application server endpoints! In a real production
	 * environment, your application server must identify the user to allow
	 * access to the endpoints.
	 * 
	 * Visit https://docs.openvidu.io/en/stable/application-server to learn
	 * more about the integration of OpenVidu in your application server.
	 */

	async getToken(): Promise<string> {
		const sessionId = await this.createSession(this.sessionId);
		return await this.createToken(sessionId);
	}

	createSession(sessionId: string): Promise<string> {
		return lastValueFrom(this.httpClient.post(
			this.APPLICATION_SERVER_URL + 'api/sessions',
			{ customSessionId: sessionId },
			{ headers: { 'Content-Type': 'application/json' }, responseType: 'text' }
		));
	}

	createToken(sessionId: string): Promise<string> {
		return lastValueFrom(this.httpClient.post(
			this.APPLICATION_SERVER_URL + 'api/sessions/' + sessionId + '/connections',
			{},
			{ headers: { 'Content-Type': 'application/json' }, responseType: 'text' }
		));
	}
}