ESmartLockAPI.cs

using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;
using Windows.Data.Json;
using OSCLock.Configs;

namespace OSCLock {
    public static class ESmartLockAPI {
        private static HttpClient client = new HttpClient();

        static ESmartLockAPI() {
            client.DefaultRequestHeaders.Add("User-Agent", "android");
        }

        public static async Task<string> GetDevicePassword(string deviceAddress, string loginToken) {
            var deviceInfoResponse = await client.PostAsync("http://web.iloveismarthome.com?m=lock&a=getLockInfoByMac", new FormUrlEncodedContent(new[] {
                new KeyValuePair<string, string>("user_name", ConfigManager.ApplicationConfig.ESmartConfig.apiUsername),
                new KeyValuePair<string, string>("loginToken", loginToken),
                new KeyValuePair<string, string>("mac", deviceAddress)
            }));

            var responseString = await deviceInfoResponse.Content.ReadAsStringAsync();

            JsonObject response;

            if (!JsonObject.TryParse(responseString, out response)) {
                Console.WriteLine("Failed to parse response");
                Console.WriteLine(responseString);
                return "ERROR_PARSE";
            }

            if (deviceInfoResponse.StatusCode == HttpStatusCode.OK) {
                IJsonValue devicePassword;
                if (response.TryGetValue("data", out devicePassword) && devicePassword.ValueType == JsonValueType.Object) {
                    var dataObject = devicePassword.GetObject();
                    if (dataObject.TryGetValue("password", out devicePassword) && devicePassword.ValueType == JsonValueType.String) {
                        return devicePassword.GetString();
                    }
                }

                Console.WriteLine(response);
                return "ERROR_DATA";
            }
            else {
                Console.WriteLine("Failed to login to eSmartHome's cloud");
                Console.WriteLine(response);
                Console.WriteLine(responseString);


                return "ERROR";
            }
        }

        public static async Task<string> Login() {
            var loginResponse = await client.PostAsync("http://web.iloveismarthome.com?m=user&a=login", new FormUrlEncodedContent(new[] {
                new KeyValuePair<string, string>("user_name", ConfigManager.ApplicationConfig.ESmartConfig.apiUsername),
                new KeyValuePair<string, string>("user_pwd", ConfigManager.ApplicationConfig.ESmartConfig.apiPassword),
                new KeyValuePair<string, string>("type", "2"),
                new KeyValuePair<string, string>("way", "0")
            }));

            var responseString = await loginResponse.Content.ReadAsStringAsync();
            JsonObject response;

            if (!JsonObject.TryParse(responseString, out response)) {
                Console.WriteLine("Failed to parse response");
                Console.WriteLine(responseString);
                return "ERROR_PARSE";
            }

            if (loginResponse.StatusCode == HttpStatusCode.OK) {
                IJsonValue loginToken;
                if (response.TryGetValue("loginToken", out loginToken)) {
                    return loginToken.GetString();
                }
                else if (response.TryGetValue("type", out loginToken) && loginToken.ValueType == JsonValueType.Number && ((int) loginToken.GetNumber()) is int errorType) {
                    switch (errorType) {
                        case 1:
                            Console.WriteLine("Wrong username or password configured, see config file");
                            return "ERROR_WRONGCREDS";
                            //Wrong password
                            break;
                        case 6:
                            Console.WriteLine("No configured credentials");
                            return "ERROR_NOCONFIG";
                            //No username or password
                            break;
                        default:
                            Console.WriteLine("Unknown error code " + errorType);
                            Console.WriteLine(response);
                            break;
                    }

                    return "ERROR_" + errorType;
                }
                else {
                    Console.WriteLine("Got success login but failed to find login token");
                    Console.WriteLine(response);
                    Console.WriteLine(response.ToString());
                    Console.WriteLine(responseString);
                    return "ERROR_NOTOKEN";
                }
            }
            else {
                Console.WriteLine("Failed to login to eSmartHome's cloud");
                Console.WriteLine(loginResponse);
                Console.WriteLine(loginResponse.Content);
                Console.WriteLine(response);
                Console.WriteLine(responseString);


                return "ERROR";
            }
        }
    }
}