ANTOOZA-BACKEND/Application/Features/Admin/Channel/ExpConfig/Update/Handler.cs

using Application.Abstractions.Cache;
using Application.Abstractions.Data;
using Application.Abstractions.Messaging;
using Domain.Entities.Common;
using Microsoft.EntityFrameworkCore;

namespace Application.Features.Admin.Channel.ExpConfig.Update;

internal sealed class Handler(IAppDbContext db, ICacheService cache) : ICommandHandler<Command>
{
    public async Task Handle(Command request, CancellationToken ct)
    {
        var entity = await db.Config
            .OrderByDescending(x => x.ID)
            .FirstOrDefaultAsync(ct);

        if (entity is null)
        {
            entity = Domain.Entities.Common.Config.Create();
            await db.Config.AddAsync(entity, ct);
        }

        var chatExp = new ChatExpConfig
        {
            ChatXpPerMessage = request.ChatXpPerMessage,
            DonationXpPerAmount = request.DonationXpPerAmount,
            ChatXpSessionLimit = request.ChatXpSessionLimit,
            MinContentLength = request.MinContentLength,
            RateLimitSec = request.RateLimitSec,
            LeaderboardSize = request.LeaderboardSize,
            CrownTopN = request.CrownTopN,
            UxShowLeaderboard = request.UxShowLeaderboard,
            UxShowMyXpBadge = request.UxShowMyXpBadge
        };

        entity.UpdateChatExp(chatExp);
        await db.SaveChangesAsync(ct);

        // 캐시 무효화
        await cache.RemoveAsync(CacheKeys.Config, ct);
    }
}