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

import { Inject, Injectable } from '@angular/core';
import { Router } from '@angular/router';

import { StorageService } from '../service/local-storage';
import { SessionService } from './session';
import { SSOService } from './sso';
import { getApplicationLocation, isNullOrUndefined, sha512 } from '../utils';
import { HttpWrapperService, HTTPRequestModel, HTTPMimeType, ModelResponseHttp } from './http-wrapper_kjdhqslkjf';
import { Environment } from '../model/environment';
import { APP_BASE_HREF } from '@angular/common';


@Injectable()
export class UserService {
	// 0: Not hide password; 1 hide password;
	private identificationVersion: number = 1;
	private cookiesRememberMe = 'remember-me';
	private cookiesToken = 'token';
	constructor(
		@Inject('ENVIRONMENT') private environment: Environment,
		private router: Router,
		private storageService: StorageService,
		private http: HttpWrapperService,
		private sessionService: SessionService,
		private ssoService: SSOService
	) {
		console.log('Start UserService');
	}

	/**
	 * Disconnect the user from the current session ==> this remove the current Token
	 */
	logOut(): void {
		this.removeSession();
		this.ssoService.requestSignOut('home');
	}
	removeSession(): void {
		this.storageService.remove(this.cookiesRememberMe);
		this.storageService.removeSession(this.cookiesToken);
		this.storageService.remove(this.cookiesToken);
		this.sessionService.destroy();
	}

	private isTokenUpToDate(token?: string): boolean {
		if (isNullOrUndefined(token) || token.length < 25) {
			return false;
		}
		// Separate the Data:
		const elems = token.split('.');
		if (elems.length !== 3) {
			return false;
		}
		// const tokenHeader = decodeURIComponent(window.atob( elems[0] ));
		const tokenData = decodeURIComponent(window.atob(elems[1]));
		// console.error(`Retrieve local token: \nheader=${tokenHeader} \ndata=${tokenData}`);
		const parsedData = JSON.parse(tokenData);
		console.debug(
			`Retrieve token exp data=${new Date(parsedData.exp * 1000).toISOString()} < ${new Date().toISOString()}`
		);
		const expireIn = new Date(parsedData.exp * 1000);
		const nowTime = new Date();
		// TODO: set a margin of 2 hours...
		return expireIn > nowTime;
	}

	getRememberMe(): boolean {
		return this.storageService.get(this.cookiesRememberMe) === 'true';
	}

	/**
	 * Check if the system can be connected
	 */
	checkAutoConnect(): Promise<void> {
		let locationOrigin = getApplicationLocation(this.environment);
		const self = this;
		return new Promise<void>((resolve, reject) => {
			// Need to use the windows global route to prevent the log in cycle ...
			// And in the main application position, the route does not have currently root the page
			let pathName = window.location.pathname;
			// console.log("start Path-name: '" + pathName  + "'");
			// console.log("check with:      '" + environment.applName + "/sso/" + "'");
			if (pathName.startsWith('/sso/') || pathName.startsWith(this.environment.applName + '/sso/')) {
				console.log('    ==> SSo section');
				reject();
				return;
			}
			console.log('    ==> Check if need reconnect?');
			let rememberMe = self.getRememberMe();
			// TODO: in case of jest reload ==> no need to manage the SSO ==> just keep the token ... it in enough...
			let token: undefined | string = undefined;
			if (
				isNullOrUndefined(this.environment.tokenStoredInPermanentStorage) ||
				this.environment.tokenStoredInPermanentStorage !== true
			) {
				token = self.storageService.getSession(self.cookiesToken);
			} else {
				token = self.storageService.get(self.cookiesToken);
			}
			// TODO: check validity of the Token:
			if (self.isTokenUpToDate(token)) {
				// remove in case of fail !!!
				this.storageService.removeSession(this.cookiesToken);
				this.storageService.remove(this.cookiesToken);
				self.startSession(token ?? '', rememberMe)
					.then(() => {
						self.router.navigateByUrl(locationOrigin);
						console.log(`update global URL = ${locationOrigin} APP_BASE_HREF=${APP_BASE_HREF}`);
						resolve();
					})
					.catch(() => {
						// jump in the sign-in page (automatically of request remember-me)
						if (rememberMe) {
							// jump to the sso !!! (remove local data to prevent login loop)
							this.storageService.remove(this.cookiesRememberMe);
							this.storageService.remove(this.cookiesToken);
							this.storageService.removeSession(this.cookiesToken);
							self.ssoService.requestSignIn(locationOrigin);
							reject();
						}
						resolve();
					});
			} else {
				console.log(`Get previous connection ... `);
				if (rememberMe) {
					// jump to the sso !!! (remove local data to prevent login loop)
					this.storageService.remove(this.cookiesRememberMe);
					this.storageService.remove(this.cookiesToken);
					this.storageService.removeSession(this.cookiesToken);
					self.ssoService.requestSignIn(locationOrigin);
					reject();
				}
				resolve();
			}
		});
	}

	startSession(token: string, rememberMe: boolean): Promise<string> {
		const self = this;
		return new Promise((resolve, reject) => {
			self.retrieveMe(token)
				.then((value2: boolean) => {
					if (rememberMe === true) {
						self.storageService.set(self.cookiesRememberMe, rememberMe ? 'true' : 'false');
					}
					if (
						isNullOrUndefined(this.environment.tokenStoredInPermanentStorage) ||
						this.environment.tokenStoredInPermanentStorage !== true
					) {
						self.storageService.setSession(self.cookiesToken, token);
					} else {
						self.storageService.set(self.cookiesToken, token);
					}
					resolve(self.sessionService.getLogin() ?? '');
				})
				.catch(() => {
					reject('sdfsdfsdf');
				});
		});
	}
	retrieveMe(token: string): Promise<boolean> {
		console.log(`AuthService.loginWithToken ... '${token}'`);
		const self = this;
		return new Promise((resolve, reject) => {
			this.http
				.requestJson({
					// server: 'karso',
					endPoint: 'users/me',
					requestType: HTTPRequestModel.GET,
					accept: HTTPMimeType.JSON,
					contentType: HTTPMimeType.JSON,
					authorization: `Bearer ${token}`, // special case, the token is set after this request...
				})
				.then((response: ModelResponseHttp) => {
					// TODO: check type ...
					console.log(`loginWithToken : get some data to check: ${JSON.stringify(response.data)}`);
					self.sessionService.create({
						//sessionId: response.data.sessionId,
						userId: response.data.id,
						userLogin: response.data.login,
						//userEMail: response.data.email,
						//userAdmin: response.data.admin,
						//userBlocked: response.data.blocked,
						//userRemoved: response.data.removed,
						//userAvatar: response.data.avatar,
						tokenJwt: token,
					});
					resolve(true);
				})
				.catch((error: any) => {
					reject(`return ERROR ${JSON.stringify(error, null, 2)}`);
				});
		});
	}

	create(login: string, email: string, password: string) {
		return this.createSha(login, email, sha512(password));
	}
	createSha(login: string, email: string, password: string) {
		let data = {
			method: 'v?',
			login: login,
			email: email,
			password: password,
		};
		console.log(`call users data=${JSON.stringify(data, null, 2)}`);

		if (this.identificationVersion === 1) {
			data.method = 'v1';
		}

		return new Promise((resolve, reject) => {
			this.http
				.requestJson({
					server: 'karso',
					endPoint: 'users',
					requestType: HTTPRequestModel.POST,
					accept: HTTPMimeType.JSON,
					contentType: HTTPMimeType.JSON,
					body: data,
				})
				.then((response: ModelResponseHttp) => {
					// TODO: check type ...
					console.log(`createSha : get some data to check: ${JSON.stringify(response.data)}`);
					resolve(response.data);
				})
				.catch((error: any) => {
					reject(`return ERROR ${JSON.stringify(error, null, 2)}`);
				});
		});
	}

	isAuthenticated(): boolean {
		// return !!Session.userId;
		return false;
	}
	isAuthorized(authorizedRoles: string): boolean {
		/*
		if (!angular.isArray(_authorizedRoles)) {
			authorizedRoles = [_authorizedRoles];
		}
		return (    authService.isAuthenticated()
				 && _authorizedRoles.indexOf(Session.userRole) !== -1
			   );
		*/
		return false;
	}
}