using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using DSharpPlus;
using DSharpPlus.Entities;
using DSharpPlus.SlashCommands;
using DSharpPlus.SlashCommands.Attributes;

namespace Valkyrie.Commands;

public class CreateButtonPanelCommand : ApplicationCommandModule
{
    [SlashRequireGuild]
    [SlashCommand("createbuttonpanel", "Creates a series of buttons which users can use to open new tickets in specific categories.")]
    public async Task OnExecute(InteractionContext command)
    {
        DiscordMessageBuilder builder = new DiscordMessageBuilder().WithContent(" ");
        List<Database.Category> verifiedCategories = await Utilities.GetVerifiedChannels();

        if (verifiedCategories.Count == 0)
        {
            await command.CreateResponseAsync(new DiscordEmbedBuilder
            {
                Color = DiscordColor.Red,
                Description = "Error: No registered categories found."
            }, true);
            return;
        }

        verifiedCategories = verifiedCategories.OrderBy(x => x.name).ToList();

        int nrOfButtons = 0;
        for (int nrOfButtonRows = 0; nrOfButtonRows < 5 && nrOfButtons < verifiedCategories.Count; nrOfButtonRows++)
        {
            List<DiscordButtonComponent> buttonRow = new List<DiscordButtonComponent>();

            for (; nrOfButtons < 5 * (nrOfButtonRows + 1) && nrOfButtons < verifiedCategories.Count; nrOfButtons++)
            {
                buttonRow.Add(new DiscordButtonComponent(ButtonStyle.Primary, "valkyrie_newticketbutton " + verifiedCategories[nrOfButtons].id, verifiedCategories[nrOfButtons].name));
            }
            builder.AddComponents(buttonRow);
        }

        await command.Channel.SendMessageAsync(builder);
        await command.CreateResponseAsync(new DiscordEmbedBuilder
        {
            Color = DiscordColor.Green,
            Description = "Successfully created message, make sure to run this command again if you add new categories to the bot."
        }, true);
    }

    public static async Task OnButtonUsed(DiscordInteraction interaction)
    {
        await interaction.CreateResponseAsync(InteractionResponseType.DeferredChannelMessageWithSource, new DiscordInteractionResponseBuilder().AsEphemeral());

        if (!ulong.TryParse(interaction.Data.CustomId.Replace("valkyrie_newticketbutton ", ""), out ulong categoryID) || categoryID == 0)
        {
            Logger.Warn("Invalid ID: " + interaction.Data.CustomId.Replace("valkyrie_newticketbutton ", ""));
            return;
        }

        (bool success, string message) = await NewCommand.OpenNewTicket(interaction.User.Id, interaction.ChannelId, categoryID);

        if (success)
        {
            await interaction.CreateFollowupMessageAsync(new DiscordFollowupMessageBuilder().AddEmbed(new DiscordEmbedBuilder
            {
                Color = DiscordColor.Green,
                Description = message
            }));
        }
        else
        {
            await interaction.CreateFollowupMessageAsync(new DiscordFollowupMessageBuilder().AddEmbed(new DiscordEmbedBuilder
            {
                Color = DiscordColor.Red,
                Description = message
            }));
        }
    }
}