Added training reminder worker

FabApprovalWorkerService/Services/ECNService.cs

@@ -8,6 +8,7 @@ public interface IECNService {
     Task<IEnumerable<ECN>> GetExpiringTECNs();
     Task<IEnumerable<ECN>> GetExpiredTECNs();
     Task<IEnumerable<string>> GetTECNNotificationUserEmails();
+    Task<ECN> GetEcnByNumber(int ecnNumber);
 }
 
 public class ECNService : IECNService {
@@ -19,6 +20,28 @@ public class ECNService : IECNService {
         _dalService = dalService ?? throw new ArgumentNullException("IDalService not injected");
     }
 
+    public async Task<ECN> GetEcnByNumber(int ecnNumber) {
+        try {
+            _logger.LogInformation($"Attempting to get ECN {ecnNumber}");
+
+            if (ecnNumber <= 0) throw new ArgumentException($"{ecnNumber} not a valid ECN number");
+
+            string sql = $"select * from ECN where ECNNumber = {ecnNumber}";
+
+            ECN? ecn = (await _dalService.QueryAsync<ECN>(sql)).FirstOrDefault();
+
+            if (ecn is null) throw new Exception($"ECN {ecnNumber} not found");
+
+            return ecn;
+        } catch (Exception ex) {
+            StringBuilder errMsgBuilder = new();
+            errMsgBuilder.Append($"An exception occurred when attempting to get ECN {ecnNumber}. ");
+            errMsgBuilder.Append($"Exception: {ex.Message}");
+            _logger.LogError(errMsgBuilder.ToString());
+            throw;
+        }
+    }
+
     public async Task<IEnumerable<ECN>> GetExpiredTECNs() {
         try {
             _logger.LogInformation("Attempting to get all TECNs expired in the last day");