/*!
 * @license
 * Copyright 2019 Alfresco Software, Ltd.
 *
 * 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 { Injectable } from '@angular/core';
import { Observable, from, throwError, ReplaySubject, of } from 'rxjs';
import { LogService } from '../../services/log.service';
import { RedirectionModel } from '../../models/redirection.model';
import { AppConfigService, AppConfigValues } from '../../app-config/app-config.service';
import { PeopleApi, UserProfileApi, UserRepresentation } from '@alfresco/js-api';
import { JwtHelperService } from '../../services/jwt-helper.service';
import { StorageService } from '../../services/storage.service';
import { OauthConfigModel } from '../../models/oauth-config.model';
import { BaseAuthenticationService } from '../base-authentication.service';
import { ADFAuthenticationService } from '../authentication.interface';
import { AlfrescoApiClientFactory } from '../../alfresco-api';
import { OAuthService } from 'angular-oauth2-oidc';
import minimatch from 'minimatch';

@Injectable({
    providedIn: 'root'
})
export class OIDCAuthenticationService extends BaseAuthenticationService implements ADFAuthenticationService {
    onLogin: ReplaySubject<any> = new ReplaySubject<any>(1);
    onLogout: ReplaySubject<any> = new ReplaySubject<any>(1);

    get peopleApi(): PeopleApi {
        return this.alfrescoApiClientFactory.getPeopleApi();
    }
    get profileApi(): UserProfileApi {
        return this.alfrescoApiClientFactory.getProfileApi();
    }

    constructor(
        private alfrescoApiClientFactory: AlfrescoApiClientFactory,
        private appConfig: AppConfigService,
        private storageService: StorageService,
        private oauthService: OAuthService,
        private logService: LogService) {
            super();
            // this.alfrescoApi.alfrescoApiInitialized.subscribe(() => {
            //     this.alfrescoApi.getInstance().reply('logged-in', () => {
            //         this.onLogin.next();
            //     });

            //     if (this.isKerberosEnabled()) {
            //         this.loadUserDetails();
            //     }
            // });
    }

    // private loadUserDetails() {
    //     const ecmUser$ = from(this.peopleApi.getPerson('-me-'));
    //     const bpmUser$ = this.getBpmLoggedUser();

    //     if (this.isALLProvider()) {
    //         forkJoin([ecmUser$, bpmUser$]).subscribe(() => this.onLogin.next());
    //     } else if (this.isECMProvider()) {
    //         ecmUser$.subscribe(() => this.onLogin.next());
    //     } else {
    //         bpmUser$.subscribe(() => this.onLogin.next());
    //     }
    // }

    isLoggedIn(): boolean {
        return this.oauthService.hasValidAccessToken() && this.oauthService.hasValidIdToken();
    }

    isLoggedInWith(provider?: string): boolean {
        console.log(provider);
        return this.isLoggedIn();
    }

    isKerberosEnabled(): boolean {
        return this.appConfig.get<boolean>(AppConfigValues.AUTH_WITH_CREDENTIALS, false);
    }

    isOauth(): boolean {
        return this.appConfig.get(AppConfigValues.AUTHTYPE) === 'OAUTH';
    }

    oidcHandlerEnabled(): boolean {
        const oauth2: OauthConfigModel = Object.assign({}, this.appConfig.get<OauthConfigModel>(AppConfigValues.OAUTHCONFIG, null));
        return oauth2?.handler === 'oidc';
    }

    isImplicitFlow() {
        const oauth2: OauthConfigModel = Object.assign({}, this.appConfig.get<OauthConfigModel>(AppConfigValues.OAUTHCONFIG, null));
        return !!oauth2?.implicitFlow;
    }

    isAuthCodeFlow() {
        const oauth2: OauthConfigModel = Object.assign({}, this.appConfig.get<OauthConfigModel>(AppConfigValues.OAUTHCONFIG, null));
        return !!oauth2?.codeFlow;
    }

    isPublicUrl(): boolean {
        const oauth2: OauthConfigModel = Object.assign({}, this.appConfig.get<OauthConfigModel>(AppConfigValues.OAUTHCONFIG, null));
        const publicUrls = oauth2.publicUrls || [];

        if (Array.isArray(publicUrls)) {
            return publicUrls.length > 0 &&
                publicUrls.some((urlPattern: string) => minimatch(window.location.href, urlPattern));
        }
        return false;
    }

    isECMProvider(): boolean {
        return this.appConfig.get<string>(AppConfigValues.PROVIDERS).toUpperCase() === 'ECM';
    }
    isBPMProvider(): boolean {
        return this.appConfig.get<string>(AppConfigValues.PROVIDERS).toUpperCase() === 'BPM';
    }

    isALLProvider(): boolean {
        return this.appConfig.get<string>(AppConfigValues.PROVIDERS).toUpperCase() === 'ALL';
    }

    login(): Observable<{ type: string; ticket: any }> {
        return of();
    }

    ssoImplicitLogin() {
        this.oauthService.initLoginFlow();
    }

    ssoCodeFlowLogin() {
        this.oauthService.initCodeFlow();
    }

    isRememberMeSet(): boolean {
        return true;
    }

    logout() {
        this.oauthService.logOut();
        return of();
    }

    getTicketEcm(): string | null {
        return null;
    }

    getTicketBpm(): string | null {
        return null;
    }

    getTicketEcmBase64(): string | null {
        return null;
    }

    isEcmLoggedIn(): boolean {
        return this.isLoggedIn();
    }

    isBpmLoggedIn(): boolean {
        return this.isLoggedIn();
    }

    getEcmUsername(): string {
        return 'To Be Implemented';
    }

    getBpmUsername(): string {
        return 'To Be Implemented';
    }

    setRedirect(url?: RedirectionModel) {
        console.log(url);
        // noop
    }

    getRedirect(): string {
        // noop
        return 'noop';
    }

    getBpmLoggedUser(): Observable<UserRepresentation> {
        return from(this.profileApi.getProfile());
    }

    handleError(error: any): Observable<any> {
        this.logService.error('Error when logging in', error);
        return throwError(error || 'Server error');
    }

    getToken(): string {
        return this.storageService.getItem(JwtHelperService.USER_ACCESS_TOKEN);
    }
}