Kayori_MedusaPluginChargeMachine/MedusaPluginChargeMachine/Handlers/LA9/GetRecentChargeEaChargeHandler.cs

using Abstractions.Handlers;
using Abstractions.SerializationTypes;
using MedusaPluginChargeMachine.Models.Request;
using MedusaPluginChargeMachine.Models.Response;
using MedusaPluginChargeMachine.Services;
using Microsoft.EntityFrameworkCore;

namespace MedusaPluginChargeMachine.Handlers.LA9;

public class GetRecentChargeEaChargeHandler(ISessionService sessionService, ChargeMachineDbContext db)
    : Handler<GetRecentChargeRequest, GetRecentChargeResponse>
{
    public override void Configure()
    {
        Module("eacharge");
        Method("getrecentcharge");
    }

    public override async Task<GetRecentChargeResponse> HandleAsync(GetRecentChargeRequest req, GameModel model)
    {
        var cardId = ResolveCardId(req);

        var page = int.TryParse(req.Page, out var p) ? Math.Max(1, p) : 1;

        var perPage = int.TryParse(req.Num, out var n) ? Math.Max(1, n)
            : int.TryParse(req.PerPage, out var pp) ? Math.Max(1, pp)
            : 10;

        var query = db.ChargeHistories.AsQueryable();

        if (cardId is not null)
            query = query.Where(h => h.CardId == cardId);

        if (req.TargetDate is not null && DateTime.TryParse(req.TargetDate, out var targetDate))
            query = query.Where(h => h.OrderDate.Date == targetDate.Date);

        var rows = await query
            .OrderByDescending(h => h.OrderDate)
            .Skip((page - 1) * perPage)
            .Take(perPage)
            .ToListAsync();

        var items = rows.Select(h => new GetRecentChargeItem
        {
            RcvTime = new XrpcString(h.OrderDate.ToString("yyyyMMddHHmmss")),
            ChrgPrice = new XrpcInt(h.ChargeAmount),
            CardNo = new XrpcString(MaskCardId(h.CardId)),
            AccCode = new XrpcString(""),
            RcvStatus = new XrpcInt(0),
            FontColor = new XrpcString("#FFFFFF")
        }).ToList();

        if (items.Count == 0)
        {
            items.Add(new GetRecentChargeItem
            {
                RcvTime = new XrpcString(""),
                ChrgPrice = new XrpcInt(0),
                CardNo = new XrpcString(""),
                AccCode = new XrpcString(""),
                RcvStatus = new XrpcInt(0),
                FontColor = new XrpcString("#FFFFFF")
            });
        }

        return new GetRecentChargeResponse
        {
            Status = 0,
            Num = new XrpcInt(items.Count),
            Items = items
        };
    }

    private string? ResolveCardId(GetRecentChargeRequest req)
    {
        if (req.SessionId is not null)
        {
            try { return sessionService.GetSession(req.SessionId).refId; }
            catch { /* fall through to cardid */ }
        }
        return req.CardId;
    }

    private static string MaskCardId(string cardId) =>
        cardId.Length <= 4
            ? new string('*', cardId.Length)
            : new string('*', cardId.Length - 4) + cardId[^4..];
}