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 StatusMenuUserState : IUserState
	{
		public const string CMD_BACK = "Назад";

		ITelegramBotClient botClient;
		private JsonDocument config;
		HttpClient http = new HttpClient();
		OpenHabClient openhab;

		public StatusMenuUserState(ITelegramBotClient botClient, JsonDocument config, OpenHabClient openhab)
		{
			this.botClient = botClient;
			this.config = config;
			this.openhab = openhab;
		}

		public async Task<IUserState> ProcessMessage(IUserState previous, Telegram.Bot.Types.Update e)
		{
			var response = "";
			if (previous != this)
			{
				response = "Возможные проблемы:\n";
				var items = await openhab.GetItems();
				foreach (var item in items)
				{
					if (!item.name.StartsWith("Problem_")) continue;
					response += item.label + ": ";
					var state = await openhab.GetItemState(item.name);
					if (state.state == "OFF") response += "OK";
					else if (state.state == "ON") response += "PROBLEM!";
					else response += "UNKNOWN";
					response += "\n";
				}
			}
			else if (e.Message.Text == CMD_BACK)
			{
				var newState = new MainMenuUserState(botClient, config, openhab);
				await newState.ProcessMessage(this, e);
				return newState;
			}
			else
			{
				response = "Я не понял";
			}
			var replyKeyboardMarkup = new ReplyKeyboardMarkup(
				new KeyboardButton[][]
				{
						new KeyboardButton[] { CMD_BACK },
				}
			);

			await botClient.SendTextMessageAsync(
			  chatId: e.Message.Chat,
			  text: response,
			  replyMarkup: replyKeyboardMarkup
			);
			return this;
		}
	}
}