#nullable enable

using System.Threading.Tasks;
using Kruzya.TelegramBot.Core.Data;
using Kruzya.TelegramBot.Core.Extensions;
using Telegram.Bot.Types;

namespace West.TelegramBot.ChatManagement.Service;

public class RulesService
{
    private readonly CoreContext _db;

    public RulesService(CoreContext db)
    {
        _db = db;
    }

    public async Task<BotUserValue?> GetRulesOptionAsync(Chat chat)
    {
        return await _db.UserValues.FindOption(chat.Id, "rulesMsgId");
    }

    public async Task<int?> GetRulesMessageIdAsync(Chat chat)
    {
        return (await GetRulesOptionAsync(chat))?.GetValue<int>();
    }

    public async Task<bool> HasRulesAsync(Chat chat)
    {
        return await GetRulesMessageIdAsync(chat) != null;
    }

    public async Task SetRulesAsync(Chat chat, int messageId)
    {
        var option = await GetRulesOptionAsync(chat) ?? _db.UserValues.Create();
        option.SetValue(messageId);
        _db.AddOrUpdate(option);
    }

    public async Task RemoveChatRulesAsync(Chat chat)
    {
        var option = await GetRulesOptionAsync(chat);
        if (option == null)
        {
            return;
        }
        _db.Remove(option);
    }
}