feat 生日券功能,自动上传消费数据,提醒访客到期

Src/Dlhis.Canteen/Voucher/Services/Implements/VoucherQrCodeService.cs

@@ -0,0 +1,75 @@
+
+using System.Text;
+using Dlhis.Constants;
+using Dlhis.Entity.Canteen.Entities.Voucher;
+using Kurisu.AspNetCore.Authentication.Abstractions;
+using Kurisu.AspNetCore.DataAccess.SqlSugar.Services;
+using Kurisu.AspNetCore.Utils.Extensions;
+
+namespace Dlhis.Canteen.Voucher.Services.Implements;
+
+public class VoucherQrCodeService : IVoucherQrCodeService
+{
+    private readonly IDbContext _dbContext;
+    private readonly ICurrentUser _currentUser;
+
+    public VoucherQrCodeService(IDbContext dbContext, ICurrentUser currentUser)
+    {
+        _dbContext = dbContext;
+        _currentUser = currentUser;
+    }
+
+
+    public async Task<string> GetQrCodeAsync(string voucherNo, bool isNeedRefresh = false)
+    {
+        var userCode = _currentUser.GetUserClaim(UserClaimConstants.JinkoCode);
+        if (!await _dbContext.Queryable<VoucherUserInfoEntity>().Where(x => x.VoucherNo == voucherNo && x.UserCode == userCode).AnyAsync())
+        {
+            true.ThrowIfTrue("非法的消费券");
+        }
+
+        var qrcodeInfo = await _dbContext.Queryable<VoucherQrCodeEntity>().SingleAsync(x => x.VoucherNo == voucherNo);
+
+        if (qrcodeInfo == null)
+        {
+            qrcodeInfo = new VoucherQrCodeEntity
+            {
+                VoucherNo = voucherNo,
+                QrCode = GenerateQrCode(voucherNo)
+            };
+
+            await _dbContext.InsertAsync(qrcodeInfo);
+            return qrcodeInfo.QrCode;
+        }
+
+        var now = DateTime.Now;
+        if (qrcodeInfo.ModifiedTime.AddMinutes(1) >= now && !isNeedRefresh)
+        {
+            return qrcodeInfo.QrCode;
+        }
+
+        qrcodeInfo.QrCode = GenerateQrCode(voucherNo);
+        await _dbContext.UpdateAsync(qrcodeInfo);
+
+        return qrcodeInfo.QrCode;
+    }
+
+
+    /// <summary>
+    /// qrCode生成
+    /// </summary>
+    /// <param name="voucherNo"></param>
+    /// <returns></returns>
+    private static string GenerateQrCode(string voucherNo)
+    {
+        var ts = DateTimeOffset.Now.ToUnixTimeMilliseconds();
+
+        return QrCodeConstants.Birthday + voucherNo.ToArray().Select(x =>
+        {
+            var b = Encoding.ASCII.GetBytes(x.ToString());
+            int i = b[0];
+            return Convert.ToString(i);
+
+        }).Join(string.Empty) + ts;
+    }
+}