StreakBot / Commands / StartCommand.cs

using NetCord;
using NetCord.Services.ApplicationCommands;
using StreakBot.Data.Entities;
using StreakBot.Services;

namespace StreakBot.Commands;

public class StartCommand : ApplicationCommandModule<ApplicationCommandContext>
{
    private readonly StreakService _streakService;

    public StartCommand(StreakService streakService)
    {
        _streakService = streakService;
    }

    [SlashCommand("start", "Start a daily messaging streak with another user")]
    public async Task<string> Start(
        [SlashCommandParameter(Name = "user", Description = "The user to start a streak with")]
        User user)
    {
        var initiatorId = Context.User.Id;
        var targetId = user.Id;

        if (initiatorId == targetId)
        {
            return "You can't start a streak with yourself!";
        }

        if (user.IsBot)
        {
            return "You can't start a streak with a bot!";
        }

        Streak? success;
        if (Context.Interaction.GuildId is null)
        {
            // Group DM
            var channelId = Context.Channel.Id;
            success = await _streakService.CreateStreakAsync(initiatorId, targetId, 0, channelId);
        }
        else
        {
            // Server
            var serverId = Context.Interaction.GuildId.Value;
            success = await _streakService.CreateStreakAsync(initiatorId, targetId, serverId);
        }

        return success != null ? $"Streak started between <@{initiatorId}> and <@{targetId}>! Send messages daily to keep your streak alive!" : $"Streak already started between <@{initiatorId}> and <@{targetId}>!";
    }
}