SupportChild/Commands/AddMessageCommand.cs

using DSharpPlus.Entities;
using System.Threading.Tasks;
using DSharpPlus.SlashCommands;
using DSharpPlus.SlashCommands.Attributes;

namespace SupportChild.Commands;

public class AddMessageCommand : ApplicationCommandModule
{
	[SlashRequireGuild]
	[SlashCommand("addmessage", "Adds a new message for the 'say' command.")]
	public async Task OnExecute(InteractionContext command,
		[Option("Identifier", "The identifier word used in the /say command.")] string identifier,
		[Option("Message", "The message the /say command will return.")] string message)
	{
		if (string.IsNullOrEmpty(message))
		{
			await command.CreateResponseAsync(new DiscordEmbedBuilder
			{
				Color = DiscordColor.Red,
				Description = "No message specified."
			}, true);
			return;
		}

		if (Database.TryGetMessage(identifier.ToLower(), out Database.Message _))
		{
			await command.CreateResponseAsync(new DiscordEmbedBuilder
			{
				Color = DiscordColor.Red,
				Description = "There is already a message with that identifier."
			}, true);
			return;
		}

		if (Database.AddMessage(identifier, command.Member.Id, message))
		{
			await command.CreateResponseAsync(new DiscordEmbedBuilder
			{
				Color = DiscordColor.Green,
				Description = "Message added."
			}, true);
		}
		else
		{
			await command.CreateResponseAsync(new DiscordEmbedBuilder
			{
				Color = DiscordColor.Red,
				Description = "Error: Failed adding the message to the database."
			}, true);
		}
	}
}