using Discord.Commands;
using NadekoBot.Extensions;
using Newtonsoft.Json;
using System.Net.Http;
using System.Threading.Tasks;
using NadekoBot.Common;
using NadekoBot.Common.Attributes;

namespace NadekoBot.Modules.Searches;

public partial class Searches
{
    [Group]
    public class XkcdCommands : NadekoSubmodule
    {
        private const string _xkcdUrl = "https://xkcd.com";
        private readonly IHttpClientFactory _httpFactory;

        public XkcdCommands(IHttpClientFactory factory)
        {
            _httpFactory = factory;
        }

        [NadekoCommand, Aliases]
        [Priority(0)]
        public async Task Xkcd(string arg = null)
        {
            if (arg?.ToLowerInvariant().Trim() == "latest")
            {
                try
                {
                    using (var http = _httpFactory.CreateClient())
                    {
                        var res = await http.GetStringAsync($"{_xkcdUrl}/info.0.json").ConfigureAwait(false);
                        var comic = JsonConvert.DeserializeObject<XkcdComic>(res);
                        var embed = _eb.Create().WithOkColor()
                            .WithImageUrl(comic.ImageLink)
                            .WithAuthor(comic.Title, "https://xkcd.com/s/919f27.ico", $"{_xkcdUrl}/{comic.Num}")
                            .AddField(GetText(strs.comic_number), comic.Num.ToString(), true)
                            .AddField(GetText(strs.date), $"{comic.Month}/{comic.Year}", true);
                        var sent = await ctx.Channel.EmbedAsync(embed)
                            .ConfigureAwait(false);

                        await Task.Delay(10000).ConfigureAwait(false);

                        await sent.ModifyAsync(m => m.Embed = embed.AddField("Alt", comic.Alt.ToString(), false).Build()).ConfigureAwait(false);
                    }
                }
                catch (HttpRequestException)
                {
                    await ReplyErrorLocalizedAsync(strs.comic_not_found).ConfigureAwait(false);
                }
                return;
            }
            await Xkcd(new NadekoRandom().Next(1, 1750)).ConfigureAwait(false);
        }

        [NadekoCommand, Aliases]
        [Priority(1)]
        public async Task Xkcd(int num)
        {
            if (num < 1)
                return;
            try
            {
                using (var http = _httpFactory.CreateClient())
                {
                    var res = await http.GetStringAsync($"{_xkcdUrl}/{num}/info.0.json").ConfigureAwait(false);

                    var comic = JsonConvert.DeserializeObject<XkcdComic>(res);
                    var embed = _eb.Create()
                        .WithOkColor()
                        .WithImageUrl(comic.ImageLink)
                        .WithAuthor(comic.Title, "https://xkcd.com/s/919f27.ico", $"{_xkcdUrl}/{num}")
                        .AddField(GetText(strs.comic_number), comic.Num.ToString(), true)
                        .AddField(GetText(strs.date), $"{comic.Month}/{comic.Year}", true);
                        
                    var sent = await ctx.Channel.EmbedAsync(embed)
                        .ConfigureAwait(false);

                    await Task.Delay(10000).ConfigureAwait(false);

                    await sent.ModifyAsync(m => m.Embed = embed.AddField("Alt", comic.Alt.ToString(), false).Build()).ConfigureAwait(false);
                }
            }
            catch (HttpRequestException)
            {
                await ReplyErrorLocalizedAsync(strs.comic_not_found).ConfigureAwait(false);
            }
        }
    }

    public class XkcdComic
    {
        public int Num { get; set; }
        public string Month { get; set; }
        public string Year { get; set; }
        [JsonProperty("safe_title")]
        public string Title { get; set; }
        [JsonProperty("img")]
        public string ImageLink { get; set; }
        public string Alt { get; set; }
    }
}