Added user state (nested menus) and sub-menu to control different potential problems and system status

MainMenuUserState.cs

@@ -0,0 +1,161 @@
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+using Telegram.Bot;
+using Telegram.Bot.Args;
+using Telegram.Bot.Types.ReplyMarkups;
+using ZaoBot.OpenHab;
+
+namespace ZaoBot
+{
+	class MainMenuUserState : IUserState
+	{
+		const string CMD_WEATHER = "Погода";
+		const string CMD_STATUS = "Статус";
+		const string CMD_LEFT_GATE = "Открой левые ворота";
+		const string CMD_RIGHT_GATE = "Открой правые ворота";
+
+		ITelegramBotClient botClient;
+		private JsonDocument config;
+		HttpClient http = new HttpClient();
+		OpenHabClient openhab;
+
+		public MainMenuUserState(ITelegramBotClient botClient, JsonDocument config, OpenHabClient openhab)
+		{
+			this.botClient = botClient;
+			this.config = config;
+			this.openhab = openhab;
+		}
+
+		public async Task<IUserState> ProcessMessage(IUserState previous, MessageEventArgs e)
+		{
+			var response = "";
+			if (e != null)
+			{
+				if (!VerifyUser(e.Message.Chat.Id, e.Message.Chat.Username))
+				{
+					Console.WriteLine($"Received message {e.Message.Text} from invalid user {e.Message.Chat.Username}");
+					await botClient.SendTextMessageAsync(
+						chatId: e.Message.Chat,
+						text: "Ваш ID " + e.Message.Chat.Id + " сообщите его администратору"
+					);
+					return this;
+				}
+				Console.WriteLine($"Received a text message in chat {e.Message.Chat.Id}.");
+
+				if (e.Message.Text == CMD_LEFT_GATE)
+				{
+					response = await OpenLeftGate();
+				}
+				else if (e.Message.Text == CMD_RIGHT_GATE)
+				{
+					response = await OpenRightGate();
+				}
+				else if (e.Message.Text == CMD_WEATHER)
+				{
+					response = await ShowWeather();
+				}
+				else if (e.Message.Text == CMD_STATUS)
+				{
+					var newState = new StatusMenuUserState(botClient, config, openhab);
+					await newState.ProcessMessage(this, e);
+					return newState;
+				}
+				else if (e.Message.Text == "")
+				{
+					response = "Превед!";
+				}
+				else if (previous != this) response = "Главное меню";
+				else response = "Я не понял :-(";
+
+				if (e.Message.Text != "") response += "\nЧто дальше?";
+				else response = "\nЧего изволите?";
+			}
+
+			var replyKeyboardMarkup = new ReplyKeyboardMarkup(
+				new KeyboardButton[][]
+				{
+						new KeyboardButton[] { CMD_WEATHER },
+						new KeyboardButton[] { CMD_LEFT_GATE, CMD_RIGHT_GATE },
+						new KeyboardButton[] { CMD_STATUS },
+				},
+				resizeKeyboard: true
+			);
+
+			await botClient.SendTextMessageAsync(
+			  chatId: e.Message.Chat,
+			  text: response,
+			  replyMarkup: replyKeyboardMarkup
+			);
+			return this;
+		}
+
+		private async Task<string> ShowWeather()
+		{
+			try
+			{
+				string response = "";
+				foreach (var element in config.RootElement.GetProperty("items_weather").EnumerateObject())
+				{
+					var result = await openhab.GetItemState(element.Name);
+					response += element.Value + ": " + ParseState(result) + "\n";
+				}
+				return response;
+			}
+			catch (Exception e)
+			{
+				return "Fail: " + e.Message;
+			}
+		}
+
+		private string ParseState(ItemState state)
+		{
+			float value;
+			if (!float.TryParse(state.state, out value))
+			{
+				return "null";
+			}
+			try
+			{
+				return printf.Printf.sprintf(state.pattern, value);
+			}
+			catch (KeyNotFoundException)
+			{
+				return value.ToString();
+			}
+		}
+
+		private async Task<string> OpenRightGate()
+		{
+			return await openhab.PostItemState(config.RootElement.GetProperty("item_right_gate").GetString(), "ON");
+		}
+
+		private async Task<string> OpenLeftGate()
+		{
+			return await openhab.PostItemState(config.RootElement.GetProperty("item_left_gate").GetString(), "ON");
+		}
+
+		private bool VerifyUser(long id, string username)
+		{
+			Console.WriteLine("Verify user " + username + " id " + id);
+			foreach (var element in config.RootElement.GetProperty("valid_users").EnumerateArray())
+			{
+				if (username == element.GetString())
+				{
+					return true;
+				}
+			}
+			foreach (var element in config.RootElement.GetProperty("valid_user_ids").EnumerateArray())
+			{
+				if (id.ToString() == element.GetString())
+				{
+					return true;
+				}
+			}
+			return false;
+		}
+	}
+}