/** @file
 * @author Edouard DUPIN
 * @copyright 2018, Edouard DUPIN, all right reserved
 * @license PROPRIETARY (see license file)
 */

import { Component, OnInit } from '@angular/core';
import { ActivatedRoute, Router } from '@angular/router';
import { Location } from '@angular/common';
import { SessionService } from 'common/service';
import { createLoginState, createPasswordState, getLoginType, isNullOrUndefined } from 'common/utils';
import { AdminUserService, ApplicationService } from 'app/service';
import { SpecificTokenResponse } from 'app/service/application';


@Component({
	selector: 'app-sign-in',
	templateUrl: './sign-in.html',
	styleUrls: ['./sign-in.less'],
})
export class SignInScene implements OnInit {
	public loginState: boolean|string = false;
	public login: string = '';
	
	public passwordState: boolean|string = false;
	public password: string = '';

	public loginButtonDisabled: boolean = true;

	public error: string = '';
	public loginType: string = 'Username/E-mail';

	public rememberMe: boolean = true;
	public loginButtonIsClicked: boolean = false;

	private ssoApplicationId: string | undefined;
	private ssoReturnData: string | undefined;
	private ssoApplicationReturnUrl: string | undefined;
	public ssoReady: boolean = true;

	constructor(
		private router: Router,
		private route: ActivatedRoute,
		private locate: Location,
		private sessionService: SessionService,
		private applicationService: ApplicationService,
		private adminUserService: AdminUserService
	) {}

	ngOnInit() {
		const ssoApplicationId = this.route.snapshot.paramMap.get('applicationId');
		if (isNullOrUndefined(ssoApplicationId)) {
			this.ssoApplicationId = undefined;
		} else {
			this.ssoApplicationId = ssoApplicationId;
		}
		const ssoReturnData = this.route.snapshot.paramMap.get('dataReturn');
		if (isNullOrUndefined(ssoReturnData)) {
			this.ssoReturnData = undefined;
		} else {
			this.ssoReturnData = ssoReturnData;
		}
		// TODO: check auto-reconnection !!!
		let self = this;
		if (this.sessionService.islogged() == true && self.loginButtonIsClicked === false) {
			// in theory it is the inly one case possible, the system loading page after retreiving session ....
			if (!isNullOrUndefined(self.ssoApplicationId)) {
				// detect an auto-relog...
				self.transferToApplicationThatRequiredTheSSO();
			}
		} else {
			this.sessionService.change.subscribe(isConnected => {
				console.log(
					`receive event from session ...${isConnected} , ssoApplicationI=${self.ssoApplicationId}, loginButtonIsClicked=${self.loginButtonIsClicked}`
				);
				if (isConnected === true && self.loginButtonIsClicked === false) {
					if (!isNullOrUndefined(self.ssoApplicationId)) {
						// detect an auto-relog...
						self.transferToApplicationThatRequiredTheSSO();
					}
				}
			});
		}
	}

	updateButtonVisibility(): void {
		if (this.loginState === true && this.passwordState === true) {
			this.loginButtonDisabled = false;
		} else {
			this.loginButtonDisabled = true;
		}
		this.error = '';
	}

	checkRememberMe(newValue: boolean): void {
		this.rememberMe = newValue;
		this.updateButtonVisibility();
	}
	/**
	 * Check the login writing rules
	 */
	checkLogin(newValue: string): void {
		this.login = newValue;
		this.loginState = createLoginState(this.login);
		this.loginType = getLoginType(this.login);
		this.updateButtonVisibility();
	}

	/**
	 * Check the password writing rules
	 */
	checkPassword(newValue: string): void {
		this.password = newValue;
		this.passwordState = createPasswordState(this.password);
		this.updateButtonVisibility();
	}

	onLogin(): void {
		this.loginButtonIsClicked = true;
		let self = this;
		this.adminUserService
			.login(this.login, this.password, this.rememberMe)
			.then(() => {
				// go to the home page
				//console.log(`Request Sign-in for other application ...  ==> ${self.ssoApplicationId}`);
				if (!isNullOrUndefined(self.ssoApplicationId)) {
					self.transferToApplicationThatRequiredTheSSO();
				} else {
					self.router.navigate(['home']);
				}
			})
			.catch((error: any) => {
				self.error = `Wrong e-mail/login or password: ${error}`;
			});
	}
	private transferToApplicationThatRequiredTheSSO(): void {
		let self = this;
		this.applicationService
			.getApplicationSpecificToken(this.ssoApplicationId)
			.then((result: SpecificTokenResponse) => {
				self.transferToApplicationThatRequiredTheSSO2(result.url, result.jwt);
			})
			.catch((error: any) => {
				self.error = `Can not retreive the application interface`;
			});
	}

	private transferToApplicationThatRequiredTheSSO2(url: string, token: string): void {
		if (url.slice(-1) === '/') {
			url = url.slice(0, -1);
		}
		if (isNullOrUndefined(this.ssoReturnData)) {
			this.ssoApplicationReturnUrl = `${url}/aG9tZQ/${this.rememberMe}/`;
		} else {
			this.ssoApplicationReturnUrl = `${url}/${this.ssoReturnData}/${this.rememberMe}/`;
		}
		//console.log(`generate in new URL: ${this.ssoApplicationReturnUrl + token}`);
		//this.router.navigate([ this.ssoApplicationReturnUrl+"aBeautifullToken" ], { replaceUrl: true });
		window.location.href = this.ssoApplicationReturnUrl + token;
	}

	onCancel(): void {
		//console.log(`onCancel ... '${ this.login }':'${ this.password }'`);
		// go to the home page
		if (this.ssoApplicationId !== undefined) {
			//this.ssoApplicationReturnUrl = this.generateBaseSSOReturn(this.ssoApplicationId, this.rememberMe);
			//window.location.href = this.ssoApplicationReturnUrl + "__CANCEL__";
			// we can not do it anymore ==> need to be logged to know the remotre adresses !!! Otherwise it is a "security fail"
			this.router.navigate(['home']);
		} else {
			this.locate.back();
		}
	}
}