feat(EnvelopeSmsService): SendTotpAsync-Methode hinzufügen, um totp unter Berücksichtigung der Ablaufzeit zu senden.

EnvelopeGenerator.Application/Services/EnvelopeSmsHandler.cs

@@ -0,0 +1,50 @@
+using EnvelopeGenerator.Application.Configurations;
+using EnvelopeGenerator.Application.Contracts;
+using EnvelopeGenerator.Application.DTOs.EnvelopeReceiver;
+using EnvelopeGenerator.Application.DTOs.Messaging;
+using EnvelopeGenerator.Application.Extensions;
+using Microsoft.Extensions.Caching.Distributed;
+using Microsoft.Extensions.Options;
+
+namespace EnvelopeGenerator.Application.Services;
+
+public class EnvelopeSmsHandler : IEnvelopeSmsHandler
+{
+    private readonly ISmsSender _sender;
+
+    private readonly TotpSmsParams _totpSmsParams;
+
+    private readonly IDistributedCache _dCache;
+
+    private readonly ICodeGenerator _codeGenerator;
+
+    public EnvelopeSmsHandler(ISmsSender sender, IOptions<TotpSmsParams> totpSmsParamsOptions, IDistributedCache distributedCache, ICodeGenerator codeGenerator)
+    {
+        _sender = sender;
+        _totpSmsParams = totpSmsParamsOptions.Value;
+        _dCache = distributedCache;
+        _codeGenerator = codeGenerator;
+    }
+
+    /// <summary>
+    /// If expiration is passed then, sends sms and returns smsResponse and up-to-date expiration; otherwise send expiration.
+    /// </summary>
+    /// <param name="er_secret"></param>
+    /// <param name="cToken"></param>
+    /// <returns></returns>
+    public async Task<(SmsResponse? SmsResponse, DateTime Expiration)> SendTotpAsync(EnvelopeReceiverSecretDto er_secret, CancellationToken cToken = default)
+    {
+        var key = string.Format(_totpSmsParams.Expiration.CacheKeyFormat, er_secret.EnvelopeId, er_secret.ReceiverId);
+        var expiration = await _dCache.GetDateTimeAsync(key, cToken);
+
+        if(expiration is DateTime expirationDateTime && expirationDateTime < DateTime.Now)
+            return (null, expirationDateTime);
+        else
+        {
+            var new_expiration = DateTime.Now.AddSeconds(_totpSmsParams.TotpStep);
+            var totp = _codeGenerator.GenerateTotp(er_secret.Receiver!.TotpSecretkey!, _totpSmsParams.TotpStep);
+            var msg = string.Format(_totpSmsParams.Format, totp, new_expiration.ToString(_totpSmsParams.Expiration.Format, _totpSmsParams.Expiration.CultureInfo));
+            return (await _sender.SendSmsAsync(er_secret.PhoneNumber!, msg), new_expiration);
+        }
+    }
+}

EnvelopeGenerator.Application/Services/EnvelopeSmsService.cs

@@ -1,18 +0,0 @@
-using EnvelopeGenerator.Application.Configurations;
-using EnvelopeGenerator.Application.Contracts;
-using Microsoft.Extensions.Options;
-
-namespace EnvelopeGenerator.Application.Services;
-
-public class EnvelopeSmsService : IEnvelopeSmsService
-{
-    private readonly ISmsSender _sender;
-
-    private readonly TotpSmsParams _totpSmsParams;
-
-    public EnvelopeSmsService(ISmsSender sender, IOptions<TotpSmsParams> totpSmsParamsOptions)
-    {
-        _sender = sender;
-        _totpSmsParams = totpSmsParamsOptions.Value;
-    }
-}