using Microsoft.Extensions.DependencyInjection;
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.Config;
using ZaoBot.OpenHab;
using ZaoBot.Problems;

namespace ZaoBot
{
	class StatusMenuUserState : IUserState
	{
		public const string CMD_BACK = "Назад";
		public const string CMD_CONFIRM_ITEM = "✅ ";

		ITelegramBotClient botClient;
		IServiceProvider services;
		StatusManager statusManager;

		public StatusMenuUserState(IServiceProvider services, ITelegramBotClient botClient, 
			IConfig config, 
			OpenHabClient openhab,
			StatusManager statusManager)
		{
			this.botClient = botClient;
			this.services = services;
			this.statusManager = statusManager;
		}

		public async Task<IUserState> ProcessMessage(IUserState previous, Telegram.Bot.Types.Update e)
		{
			var response = "";
			List<List<KeyboardButton>> buttons = new List<List<KeyboardButton>>();
			if (previous != this)
			{
				response = "Возможные проблемы:\n";
				foreach (var item in statusManager.StatusItems)
				{
					response += item.label + ": " + item.status + "\n";
				}
				var confirmButtons = new List<KeyboardButton>();
				foreach (var item in statusManager.StatusItems)
				{
					if (item.notified)
					{
						confirmButtons.Add(GetConfirmText(item));
					}
				}
				if (confirmButtons.Count > 0) buttons.Add(confirmButtons);
			}
			else if (e.Message.Text.StartsWith(CMD_CONFIRM_ITEM))
			{
				foreach (var item in statusManager.StatusItems)
				{
					if (e.Message.Text == GetConfirmText(item))
					{
						item.notified = false;
					}
				}
				response = CMD_CONFIRM_ITEM;
			}
			else if (e.Message.Text == CMD_BACK)
			{
				var newState = services.GetRequiredService<MainMenuUserState>();
				await newState.ProcessMessage(this, e);
				return newState;
			}
			else
			{
				response = "Я не понял";
			}
			buttons.Add(new List<KeyboardButton>()
			{
				CMD_BACK
			});
			var replyKeyboardMarkup = new ReplyKeyboardMarkup(buttons);

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

		private string GetConfirmText(Problems.Item item)
		{
			return CMD_CONFIRM_ITEM + item.label;
		}
	}
}