using System;
using System.Linq;
using System.Threading.Tasks;
using Discord;
using Discord.Commands;
using Geekbot.net.Lib;
using StackExchange.Redis;

namespace Geekbot.net.Commands
{
    public class GuildInfo : ModuleBase
    {
        private readonly IDatabase redis;

        public GuildInfo(IDatabase redis)
        {
            this.redis = redis;
        }

        [Command("serverstats", RunMode = RunMode.Async)]
        [Summary("Show some info about the bot.")]
        public async Task getInfo()
        {
            var eb = new EmbedBuilder();
            eb.WithAuthor(new EmbedAuthorBuilder()
                .WithIconUrl(Context.Guild.IconUrl)
                .WithName(Context.Guild.Name));
            eb.WithColor(new Color(110, 204, 147));

            var created = Context.Guild.CreatedAt;
            var age = Math.Floor((DateTime.Now - created).TotalDays);

            var messages = redis.HashGet($"{Context.Guild.Id}:Messages", 0.ToString());
            var level = LevelCalc.GetLevelAtExperience((int) messages);

            eb.AddField("Server Age", $"{created.Day}/{created.Month}/{created.Year} ({age} days)");
            eb.AddInlineField("Level", level)
                .AddInlineField("Messages", messages);

            await ReplyAsync("", false, eb.Build());
        }

        public static string FirstCharToUpper(string input)
        {
            if (string.IsNullOrEmpty(input))
                throw new ArgumentException("ARGH!");
            return input.First().ToString().ToUpper() + input.Substring(1);
        }
    }
}