Excel export

SchengenVisaApi/ApplicationLayer/Services/Applicants/Models/ApplicantModel.cs

@@ -61,4 +61,6 @@ public class ApplicantModel
     /// <inheritdoc cref="Applicant.IsNonResident" />
     [Required]
     public bool IsNonResident { get; set; }
+
+    public override string ToString() => Name.ToString();
 }

SchengenVisaApi/ApplicationLayer/Services/Applicants/Models/NameModel.cs

@@ -16,4 +16,6 @@ public class NameModel
 
     [MaxLength(ConfigurationConstraints.NameLength)]
     public string? Patronymic { get; set; }
+
+    public override string ToString() => $"{FirstName} {Surname} {Patronymic}".TrimEnd();
 }

SchengenVisaApi/ApplicationLayer/Services/VisaApplications/Handlers/IVisaApplicationRequestsHandler.cs

@@ -23,5 +23,9 @@ public interface IVisaApplicationRequestsHandler
     /// Sets application status to closed
     Task HandleCloseRequestAsync(Guid applicationId, CancellationToken cancellationToken);
 
+    /// Sets application status to approved or rejected
     Task SetApplicationStatusFromAuthorityAsync(Guid applicationId, AuthorityRequestStatuses status, CancellationToken cancellationToken);
+
+    /// Returns stream with file with formatted application data to download
+    Task<Stream> ApplicationToStreamAsync(Guid applicationId, CancellationToken cancellationToken);
 }

SchengenVisaApi/ApplicationLayer/Services/VisaApplications/Handlers/VisaApplicationRequestsHandler.cs

@@ -17,7 +17,8 @@ public class VisaApplicationRequestsHandler(
     IUnitOfWork unitOfWork,
     IMapper mapper,
     IDateTimeProvider dateTimeProvider,
-    IUserIdProvider userIdProvider) : IVisaApplicationRequestsHandler
+    IUserIdProvider userIdProvider,
+    IEntityWriter entityWriter) : IVisaApplicationRequestsHandler
 {
     async Task<List<VisaApplicationPreview>> IVisaApplicationRequestsHandler.GetPendingAsync(CancellationToken cancellationToken)
     {
@@ -34,7 +35,8 @@ public class VisaApplicationRequestsHandler(
         return mapper.Map<List<VisaApplicationPreview>>(visaApplications);
     }
 
-    async Task<VisaApplicationModel> IVisaApplicationRequestsHandler.GetApplicationForApplicantAsync(Guid id, CancellationToken cancellationToken)
+    /// <summary> <inheritdoc cref="IVisaApplicationRequestsHandler.GetApplicationForApplicantAsync"/> </summary>
+    public async Task<VisaApplicationModel> GetApplicationForApplicantAsync(Guid id, CancellationToken cancellationToken)
     {
         var applicant = await applicants.FindByUserIdAsync(userIdProvider.GetUserId(), cancellationToken);
         var application = await applications.GetByApplicantAndApplicationIdAsync(applicant.Id, id, cancellationToken);
@@ -104,4 +106,10 @@ public class VisaApplicationRequestsHandler(
 
         await unitOfWork.SaveAsync(cancellationToken);
     }
+
+    async Task<Stream> IVisaApplicationRequestsHandler.ApplicationToStreamAsync(Guid applicationId, CancellationToken cancellationToken)
+    {
+        var application = await GetApplicationForApplicantAsync(applicationId, cancellationToken);
+        return await entityWriter.WriteEntityToStream(application, cancellationToken);
+    }
 }

SchengenVisaApi/ApplicationLayer/Services/VisaApplications/Models/VisaApplicationModel.cs

@@ -1,4 +1,5 @@
 using System.ComponentModel.DataAnnotations;
+using System.Text;
 using ApplicationLayer.Services.Applicants.Models;
 using Domains.VisaApplicationDomain;
 
@@ -33,8 +34,7 @@ public class VisaApplicationModel
     /// <inheritdoc cref="VisaApplication.PermissionToDestCountry" />
     public PermissionToDestCountryModel? PermissionToDestCountry { get; set; }
 
-    [Required]
-    public List<PastVisitModel> PastVisits { get; set; } = null!;
+    [Required] public List<PastVisitModel> PastVisits { get; set; } = null!;
 
     /// <inheritdoc cref="VisaApplication.VisaCategory" />
     [Required]
@@ -55,4 +55,35 @@ public class VisaApplicationModel
     /// <inheritdoc cref="VisaApplication.ValidDaysRequested" />
     [Required]
     public int ValidDaysRequested { get; set; }
+
+    public string ForGroupToString() => ForGroup ? "For group" : "Individual";
+
+    public string PastVisasToString()
+    {
+        var stringBuilder = new StringBuilder();
+        foreach (var visa in PastVisas)
+        {
+            stringBuilder.AppendLine($"{visa.Name} issued at {visa.IssueDate.ToShortDateString()} and valid for {visa.ExpirationDate.ToShortDateString()}");
+        }
+
+        return stringBuilder.ToString();
+    }
+
+    public string PastVisitsToString()
+    {
+        var stringBuilder = new StringBuilder();
+        foreach (var visit in PastVisits)
+        {
+            stringBuilder.AppendLine($"Visit to {visit.DestinationCountry} started at {visit.StartDate.ToShortDateString()} and ends {visit.EndDate.ToShortDateString()}");
+        }
+
+        return stringBuilder.ToString();
+    }
+
+    public string PermissionToDestCountryToString()
+    {
+        return VisaCategory is VisaCategory.Transit
+            ? $"Issued by{PermissionToDestCountry!.Issuer}, expires at {PermissionToDestCountry.ExpirationDate.ToShortDateString()}"
+            : "Non-transit";
+    }
 }

SchengenVisaApi/ApplicationLayer/Services/VisaApplications/NeededServices/IEntityWriter.cs

@@ -0,0 +1,7 @@
+namespace ApplicationLayer.Services.VisaApplications.NeededServices
+{
+    public interface IEntityWriter
+    {
+        Task<Stream> WriteEntityToStream(object entity, CancellationToken cancellationToken);
+    }
+}