// (C) Copyright 2015 Martin Dougiamas
//
// 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 { CoreLoggerProvider } from '../../../providers/logger';
import { TranslateService } from '@ngx-translate/core';

/**
 * Service that provides some features regarding users information.
 */
@Injectable()
export class CoreUserHelperProvider {
    protected logger;

    constructor(logger: CoreLoggerProvider, private translate: TranslateService) {
        this.logger = logger.getInstance('CoreUserHelperProvider');
    }

    /**
     * Formats a user address, concatenating address, city and country.
     *
     * @param {string} address Address.
     * @param {string} city    City.
     * @param {string} country Country.
     * @return {string} Formatted address.
     */
    formatAddress(address: string, city: string, country: string): string {
        const separator = this.translate.instant('core.listsep');
        let values = [address, city, country];

        values = values.filter((value) => {
            return value && value.length > 0;
        });

        return values.join(separator + ' ');
    }

    /**
     * Formats a user role list, translating and concatenating them.
     *
     * @param {any[]} [roles] List of user roles.
     * @return {string} The formatted roles.
     */
    formatRoleList(roles?: any[]): string {
        if (!roles || roles.length <= 0) {
            return '';
        }

        const separator = this.translate.instant('core.listsep');

        return roles.map((value) => {
            const translation = this.translate.instant('core.user.' + value.shortname);

            return translation.indexOf('core.user.') < 0 ? translation : value.shortname;
        }).join(separator + ' ');
    }
}