using System.Diagnostics.CodeAnalysis;
using Microsoft.EntityFrameworkCore;
using Telegram.Bot.SpaceApi.Backend.Database;

namespace Telegram.Bot.SpaceApi.Backend;

using Database.Tables;

public static class BotOrchestrator {
	private static readonly List<BotInstance> Bots = new();

	public static BotInstance? GetBot(Bot bot) => Bots.FirstOrDefault(p => p.Id == bot.Id);
	public static void         AddBot(Bot bot) => Bots.Add(new BotInstance(bot));
	public static void         DelBot(Bot bot) => Bots.RemoveAll(p => p.Id == bot.Id);

	private static void Initialize() {
		var db = new DatabaseContext();
		db.Bots.ForEachAsync(AddBot);
	}

	[SuppressMessage("ReSharper", "FunctionNeverReturns")]
	public static Task UpdateTask() {
		Initialize();

		while (true) {
			Bots.ForEach(bot => Task.Run(bot.Update));
			Thread.Sleep(60000);
		}
	}
}

public class BotInstance {
	public readonly int     Id;
	public          string? Error;
	public          bool    LastStatus;

	private readonly string             _name;
	private readonly string             _chat;
	private readonly SpaceApiClient?    _api;
	private readonly TelegramBotClient? _bot;

	public BotInstance(Bot bot) {
		Id    = bot.Id;
		_name = bot.Name;
		_chat = bot.Chat;

		try {
			_bot       = new TelegramBotClient(bot.Token);
			_api       = string.IsNullOrWhiteSpace(bot.ApiOverrideAddress) ? new SpaceApiClient(bot.ApiUrl) : new SpaceApiClient(bot.ApiUrl, bot.ApiOverrideAddress);
			LastStatus = _api.IsOpen();
		}
		catch (Exception e) {
			Error = e.Message;
		}
	}

	public Task Update() {
		try {
			if (_api == null || _bot == null)
				return Task.CompletedTask;

			var status = _api.IsOpen();
			if (status == LastStatus)
				return Task.CompletedTask;

			LastStatus = status;
			Console.WriteLine($"Updating {_name} status to {(status ? "open" : "closed")}...");
			_bot.SendMessage(_chat, $"{_name} is {(status ? "open" : "closed")}.");
			Error = null;
			return Task.CompletedTask;
		}
		catch (Exception e) {
			Console.WriteLine($"Error updating {_name} status: {e.Message}");
			Error = e.Message;
			return Task.CompletedTask;
		}
	}
}