bundesmessenger-ios/bwi/ServerURLs/ServerURLHelper.swift

//
/*
 * Copyright (c) 2022 BWI GmbH
 *
 * 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 Foundation

@objcMembers class ServerURLHelper : NSObject {
    static let shared = ServerURLHelper()
    
    private let settingsKey = "serverSettings"
    private let serverUrlKey = "serverURL"
    private let pusherUrlKey = "pusherURL"
    private let flavorUrlKey = "flavor"
    
    var serverURLs = Array<ServerURLs>()
    
    private func loadURLs() {
        if let path = Bundle.main.path(forResource: "serverurls", ofType: "json") {
            do {
                let data = try Data(contentsOf: URL(fileURLWithPath: path), options: .mappedIfSafe)
                let jsonResult = try JSONSerialization.jsonObject(with: data, options: .mutableLeaves)
                if let jsonResult = jsonResult as? Dictionary<String, AnyObject>, let urls = jsonResult[settingsKey] as? [Any] {
    
                    for urlSet in urls  {
                        if let dict = urlSet as? Dictionary<String,String> {
                            if let server = dict[serverUrlKey], let pusher = dict[pusherUrlKey], let flavor = dict[flavorUrlKey] {
                                serverURLs.append(ServerURLs(serverUrl: server, pusherUrl: pusher, flavor: flavor))
                            }
                        }

                    }
                }
            } catch {
                 // handle error
            }
        }
    }
    
    override init() {
        super.init()
        self.loadURLs()
    }
    
    func serverUrl()  -> String? {
        if serverURLs.count > 0  {
            return serverURLs[0].serverUrl
        } else {
            return nil
        }
    }
    
    func pusherUrl()  -> String? {
        if serverURLs.count > 0  {
            return serverURLs[0].pusherUrl
        } else {
            return nil
        }
    }
    
    func flavor() -> String? {
        if serverURLs.count > 0  {
            return serverURLs[0].flavor
        } else {
            return nil
        }
    }
}