using System;
using System.Threading.Tasks;
using Discord;
using Discord.Commands;
using Discord.WebSocket;
using Geekbot.net.Lib;
using Geekbot.net.Lib.ErrorHandling;
using Geekbot.net.Lib.Logger;
using Geekbot.net.Lib.UserRepository;
using StackExchange.Redis;

namespace Geekbot.net.Commands.Admin
{
    [Group("owner")]
    [RequireOwner]
    public class Owner : ModuleBase
    {
        private readonly DiscordSocketClient _client;
        private readonly IErrorHandler _errorHandler;
        private readonly IGeekbotLogger _logger;
        private readonly IDatabase _redis;
        private readonly IUserRepository _userRepository;

        public Owner(IDatabase redis, DiscordSocketClient client, IGeekbotLogger logger, IUserRepository userRepositry, IErrorHandler errorHandler)
        {
            _redis = redis;
            _client = client;
            _logger = logger;
            _userRepository = userRepositry;
            _errorHandler = errorHandler;
        }

        [Command("youtubekey", RunMode = RunMode.Async)]
        [Remarks(CommandCategories.Admin)]
        [Summary("Set the youtube api key")]
        public async Task SetYoutubeKey([Summary("API Key")] string key)
        {
            _redis.StringSet("youtubeKey", key);
            await ReplyAsync("Apikey has been set");
        }

        [Command("game", RunMode = RunMode.Async)]
        [Remarks(CommandCategories.Admin)]
        [Summary("Set the game that the bot is playing")]
        public async Task SetGame([Remainder] [Summary("Game")] string key)
        {
            _redis.StringSet("Game", key);
            await _client.SetGameAsync(key);
            _logger.Information("Geekbot", $"Changed game to {key}");
            await ReplyAsync($"Now Playing {key}");
        }

        [Command("popuserrepo", RunMode = RunMode.Async)]
        [Remarks(CommandCategories.Admin)]
        [Summary("Populate user cache")]
        public async Task PopUserRepoCommand()
        {
            var success = 0;
            var failed = 0;
            try
            {
                _logger.Warning("UserRepository", "Populating User Repositry");
                await ReplyAsync("Starting Population of User Repository");
                foreach (var guild in _client.Guilds)
                {
                    _logger.Information("UserRepository", $"Populating users from {guild.Name}");
                    foreach (var user in guild.Users)
                    {
                        var succeded = await _userRepository.Update(user);
                        var inc = succeded ? success++ : failed++;
                    }
                }

                _logger.Warning("UserRepository", "Finished Updating User Repositry");
                await ReplyAsync(
                    $"Successfully Populated User Repository with {success} Users in {_client.Guilds.Count} Guilds (Failed: {failed})");
            }
            catch (Exception e)
            {
                _errorHandler.HandleCommandException(e, Context,
                    "Couldn't complete User Repository, see console for more info");
            }
        }

        [Command("error", RunMode = RunMode.Async)]
        [Remarks(CommandCategories.Admin)]
        [Summary("Throw an error un purpose")]
        public void PurposefulError()
        {
            var e = new Exception("Error Generated by !owner error");
            _errorHandler.HandleCommandException(e, Context);
        }
    }
}