import { Injectable } from '@angular/core';
import { CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot, Router } from '@angular/router';

import { BusService } from '@creedinteractive/onguard-ng-services';
import { LaunchpadWebConfiguration } from '@creedinteractive/onguard-models';

import { AuthenticationService } from '../services/authentication/authentication.service';
import { LaunchpadWebConfigurationService } from '../launchpad-web-configuration.service';
import { LaunchpadEventsService } from '../services/launchpad-events/launchpad-events.service';

@Injectable({
    providedIn: 'root',
})
export class LaunchpadLoginGuard implements CanActivate {
    private config: LaunchpadWebConfiguration;

    constructor(
        private authenticationService: AuthenticationService,
        private bus: BusService,
        private events: LaunchpadEventsService,
        private launchpadService: LaunchpadWebConfigurationService,
        private router: Router,
    ) {
        if (typeof launchpadService?.config === 'undefined') {
            throw new Error('Missing configuration options');
        }
        this.config = launchpadService.config;
    }

    canActivate(next: ActivatedRouteSnapshot, state: RouterStateSnapshot): boolean {
        console.log(`Login Guard. jwt=${this.authenticationService.jwt} state.url=${state.url}`);

        if (this.authenticationService.jwt && !next.queryParams.sso_origin) {
            console.log(`Login Guard. Prevent activation of route '${state.url}'`);
            this.router.navigate(['/']);
            return false;
        } else if (!this.authenticationService.jwt && next.queryParams.sso_token) {
            console.log('Login Guard. Request Login from Inventory Asset API / LaunchPad');
            this.bus.publish(this.events.user.sso_auth.requested, next.queryParams.sso_token);
            return false;
        } else {
            console.log(`Login Guard. Activate route '${state.url}'`);
            const redirectLocation = state.url !== '/login' ? state.url : '';
            window.location.href = `${this.config.ssoUrl + this.config.ssoLoginRoute}?sso_origin=${
                this.config.appSsoIdentity
            }&redirect=${encodeURI(redirectLocation)}`;
            return false;
        }
    }
}