using System;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using System.Net.Http;

using System.Net.Http.Headers;

using System.Threading.Tasks;

using System.Collections.Generic;

using System.Linq;

using System.Text;

​

public class Program

{

    const string clientId = "your-clientId";

    const string familyName = "your-familyName";

    // To receive push notification (install https://qpush.me/pusher/ on your mobile) and get your name and your code

    const string qpushmeName = "your-qpush-name-here";

    const string qpushcode = "your-qpush-code-here";

    const string baseAddress = "https://rebooking.appointments.api.cp1.homeaffairs.gov.au/v1/";

    const string qpushBaseAddress = "https://qpush.me/pusher/";

    public static async Task Main()

    {

        var login = await Login.LogMeIn(clientId, familyName);

        var tomorrow = DateTime.Today.AddDays(1).ToString("yyyy-MM-dd");

        var currentAppointment = login.Appointments.FirstOrDefault();

        var appointmentDay = currentAppointment.AppointmentDate.ToString("yyyy-MM-dd");

        var availability = CheckForAvailability.Check(login.token, tomorrow, appointmentDay, currentAppointment.AppointmentID);

        if (availability != null)

        {

            var message = $"Found a day {availability.Day.ToString("yyyy-MM-dd")} available({availability.Availability.available_times_count}): {string.Join(",", availability.Availability.times)}";

            Push.SendPush(message, qpushmeName, qpushcode);

        }

    }

​

    public static class CheckForAvailability

    {

        public static AvailabilityResult Check(string token, string tomorrow, string appointmentDay, string appointmentId)

        {

            var client = new HttpClient();

            client.BaseAddress = new Uri(baseAddress);

            client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);

            var url = $"calendars?AppointmentID={appointmentId}&FromDate={tomorrow}&ToDate={appointmentDay}";

            var response = client.GetAsync(url).Result;

            var results = response.Content.ReadAsStringAsync().Result;

            JObject parsedResults = JsonConvert.DeserializeObject<JObject>(results);

            foreach (var result in parsedResults)

            {

                var day = DateTime.Parse(result.Key);

                var availability = JsonConvert.DeserializeObject<Availability>(result.Value.ToString());

                if (availability.available_times_count > 0)

                {

                    return new AvailabilityResult{Day = day, Availability = availability};

                }

            }

​

            return null;

        }

​

        public class AvailabilityResult

        {

            public DateTime Day { get; set; }

​

            public Availability Availability { get; set; }

        }

​

        public class Appointment

        {

            public DateTime Day { get; set; }

​

            public Availability Availability { get; set; }

        }

​

        public class Availability

        {

            public int available_times_count { get; set; }

​

            public string[] times { get; set; }

        }

    }

​

    public class Login

    {

        public string token { get; set; }

​

        public Appointments[] Appointments { get; set; }

​

        public static async Task<Login> LogMeIn(string clientId, string familyName)

        {

            var url = "login";

            var creds = JsonConvert.SerializeObject(new Creds()

            {clientId = clientId, familyName = familyName});

            var stringContent = new StringContent(creds, Encoding.UTF8, "application/json");

            var client = new HttpClient();

            client.BaseAddress = new Uri(baseAddress);

            var response = await client.PostAsync(url, stringContent);

            var results = await response.Content.ReadAsStringAsync();

            var login = JsonConvert.DeserializeObject<Login>(results);

            return login;

        }

    }

​

    public class Push

    {

        public static void SendPush(string msg, string name, string code)

        {

            var client = new HttpClient();

            client.BaseAddress = new Uri(qpushBaseAddress);

            var dict = new Dictionary<string, string>()

            {{"name", name}, {"code", code}, {"msg[text]", msg}};

            var formContent = new FormUrlEncodedContent(dict);

            var result = client.PostAsync("push_site/", formContent).Result;

        }

    }

​

    public class Appointments

    {

        public Venue Venue { get; set; }

​

        public string AppointmentID { get; set; }

​

        public string AppointmentType { get; set; }

​

        public DateTimeOffset AppointmentDate { get; set; }

    }

​

    public class Venue

    {

        public string Address { get; set; }

    }

​

    public class Creds

    {

        public string clientId { get; set; }

​

        public string familyName { get; set; }

    }

// Define other methods and classes here

}