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]
+    [Required] public List<PastVisitModel> PastVisits { get; set; } = null!;
-    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);
+    }
+}

SchengenVisaApi/BlazorWebAssemblyVisaApiClient/Pages/Application.razor

@@ -26,7 +26,7 @@
     <tr>
         <td colspan="3">
             Country and city of birth:<br/>
-            <em>@application.Applicant.Passport.Number</em>
+            <em>@application.Applicant.CountryOfBirth, @application.Applicant.CityOfBirth</em>
         </td>
     </tr>
     <tr>
@@ -34,7 +34,7 @@
             Citizenship:<br/>
             <em>@application.Applicant.Citizenship</em>
         </td>
-        <td >
+        <td>
             Citizenship by birth:<br/>
             <em>@application.Applicant.CitizenshipByBirth</em>
         </td>

SchengenVisaApi/BlazorWebAssemblyVisaApiClient/Pages/Applications.razor

@@ -40,12 +40,17 @@
             <td>@application.Status.GetDisplayName()</td>
             <td>
                 <NavLink href="@($"/applications/{application.Id}")">
-                    <button class="btn-outline-primary">See</button>
+                    <button class="btn-primary">See</button>
                 </NavLink>
-                @if (currentRole == Constants.ApplicantRole && application.Status is ApplicationStatus.Pending)
+                @if (currentRole == Constants.ApplicantRole)
                 {
                     <span> | </span>
-                    <input type="button" class="border-danger" @onclick="() => CloseApplication(application)" value="Close"/>
+                    <input type="button" class="btn-outline-primary" @onclick="() => DownloadApplication(application)" value="Download"/>
+                    if (application.Status is ApplicationStatus.Pending)
+                    {
+                        <span> | </span>
+                        <input type="button" class="border-danger" @onclick="() => CloseApplication(application)" value="Close"/>
+                    }
                 }
             </td>
         </tr>
@@ -53,12 +58,28 @@
     </tbody>
 </table >
 
+<script>
+    window.downloadFileFromStream = async (contentStreamReference) => {
+        const arrayBuffer = await contentStreamReference.arrayBuffer();
+        const blob = new Blob([arrayBuffer]);
+        const url = URL.createObjectURL(blob);
+        const anchorElement = document.createElement('a');
+        anchorElement.href = url;
+        anchorElement.download = 'Application.xlsx';
+        anchorElement.click();
+        anchorElement.remove();
+        URL.revokeObjectURL(url);
+    }
+</script>
+
 @code {
     private string currentRole = null!;
     private List<VisaApplicationPreview> applications = [];
 
     [Inject] private IUserDataProvider UserDataProvider { get; set; } = null!;
 
+    [Inject] private IJSRuntime JavaScriptInterop { get; set; } = null!;
+
     protected override async Task OnInitializedAsync()
     {
         try
@@ -69,6 +90,7 @@
         {
             ErrorHandler.Handle(e);
         }
+
         await Fetch();
     }
 
@@ -103,4 +125,19 @@
         }
     }
 
+    private async Task DownloadApplication(VisaApplicationPreview application)
+    {
+        try
+        {
+            var response = await Client.DownloadApplicationForApplicantAsync(application.Id);
+            using var streamRef = new DotNetStreamReference(stream: response.Stream);
+
+            await JavaScriptInterop.InvokeVoidAsync("downloadFileFromStream", streamRef);
+        }
+        catch (Exception e)
+        {
+            ErrorHandler.Handle(e);
+        }
+    }
+
 }

SchengenVisaApi/Infrastructure/DependencyInjection.cs

@@ -8,6 +8,7 @@ using Infrastructure.Database.Applicants.Repositories;
 using Infrastructure.Database.Generic;
 using Infrastructure.Database.Users.Repositories;
 using Infrastructure.Database.VisaApplications.Repositories;
+using Infrastructure.EntityToExcelTemplateWriter;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
@@ -37,6 +38,7 @@ public static class DependencyInjection
         services.AddScoped<IUsersRepository, UsersRepository>();
 
         services.AddSingleton<IDateTimeProvider, DateTimeProvider>();
+        services.AddSingleton<IEntityWriter, ExcelWriter>();
 
         services.AddHttpContextAccessor();
         services.AddScoped<IUserIdProvider, UserIdProvider>();

SchengenVisaApi/Infrastructure/EntityToExcelTemplateWriter/ExcelWriter.cs

@@ -0,0 +1,131 @@
+using System.Reflection;
+using System.Text;
+using ApplicationLayer.Services.VisaApplications.NeededServices;
+using DocumentFormat.OpenXml.Packaging;
+using DocumentFormat.OpenXml.Spreadsheet;
+using Microsoft.Extensions.Primitives;
+
+namespace Infrastructure.EntityToExcelTemplateWriter
+{
+    /// <summary>
+    /// Writes object to excel using template.xlsx file and reflections
+    /// </summary>
+    public class ExcelWriter : IEntityWriter
+    {
+        private const char InsertionSymbol = '$';
+        private readonly char[] endChars = [',', ';'];
+
+        /// <summary>
+        /// Write object to stream in Excel table format
+        /// </summary>
+        /// <param name="entity"> object to write </param>
+        /// <param name="cancellationToken"> cancellation token </param>
+        /// <returns> Stream with template.xlsx file with replaced entries like '$EntityPropName.AnotherProp' </returns>
+        /// <exception cref="NullReferenceException"> thrown when template file is incorrect </exception>
+        /// <exception cref="InvalidOperationException"> thrown if any property path in template is incorrect</exception>
+        public async Task<Stream> WriteEntityToStream(object entity, CancellationToken cancellationToken)
+        {
+            var outStream = new MemoryStream();
+            await using (var stream = File.Open("template.xlsx", FileMode.Open, FileAccess.Read))
+            {
+                await stream.CopyToAsync(outStream, cancellationToken);
+            }
+
+            using var spreadsheetDocument = SpreadsheetDocument.Open(outStream, true);
+
+            var workbookPart = spreadsheetDocument.WorkbookPart
+                               ?? throw new NullReferenceException("There is no workbook part in document");
+            var shareStringTable = workbookPart.SharedStringTablePart?.SharedStringTable ??
+                                   throw new NullReferenceException("There is no data in document");
+            var shareStringTableItems = shareStringTable.Elements<SharedStringItem>().ToArray();
+
+            foreach (var item in shareStringTableItems)
+            {
+                if (string.IsNullOrEmpty(item.InnerText))
+                {
+                    continue;
+                }
+
+                var entries = item.InnerText.Split();
+                for (var i = 0; i < entries.Length; i++)
+                {
+                    var entry = entries[i];
+                    if (entry.FirstOrDefault() is not InsertionSymbol || entry.Length <= 1)
+                    {
+                        continue;
+                    }
+
+                    entry = entry[1..];
+                    var trimmedCount = entry.Length - entry.TrimEnd(endChars).Length;
+                    var trimmed = entry[^trimmedCount..];
+                    entry = entry.TrimEnd(endChars);
+
+                    var memberPath = entry.Split('.');
+
+                    var value = GetValueFor(entity, memberPath.First());
+                    var stringToInsert = "None";
+                    foreach (var memberName in memberPath.Skip(1))
+                    {
+                        if (value is null)
+                        {
+                            break;
+                        }
+
+                        value = GetValueFor(value, memberName);
+                    }
+
+                    if (value is not null)
+                    {
+                        switch (value)
+                        {
+                            case DateTime date:
+                                stringToInsert = date.ToShortDateString();
+                                break;
+                            case Enum val:
+                                var enumString = val.ToString();
+                                var stringBuilder = new StringBuilder();
+                                for (var charIndex = 0; charIndex < enumString.Length - 1; charIndex++)
+                                {
+                                    stringBuilder.Append(enumString[charIndex]);
+                                    if (char.IsUpper(enumString[charIndex + 1]))
+                                    {
+                                        stringBuilder.Append(' ');
+                                    }
+                                }
+
+                                stringBuilder.Append(enumString.Last());
+
+                                stringToInsert = stringBuilder.ToString();
+                                break;
+                            default:
+                                stringToInsert = value.ToString();
+                                break;
+                        }
+                    }
+
+                    entries[i] = stringToInsert! + trimmed;
+                }
+
+                item.Text!.Text = string.Join(' ', entries);
+            }
+
+            spreadsheetDocument.Save();
+            return outStream;
+        }
+
+        private static object? GetValueFor(object entity, string member)
+        {
+            var memberInfo = entity.GetType()
+                                 .GetMembers()
+                                 .FirstOrDefault(p => p.Name == member)
+                             ?? throw new InvalidOperationException(
+                                 $"Invalid member path in document. Not found: {member}");
+            return memberInfo switch
+            {
+                PropertyInfo propertyInfo => propertyInfo.GetValue(entity),
+                MethodInfo methodInfo => methodInfo.Invoke(entity, []),
+                _ => throw new InvalidOperationException("Only properties and methods allowed.")
+            };
+        }
+    }
+}

SchengenVisaApi/Infrastructure/Infrastructure.csproj

@@ -11,6 +11,7 @@
     </ItemGroup>
 
     <ItemGroup>
+      <PackageReference Include="DocumentFormat.OpenXml" Version="3.1.0" />
       <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="8.0.8" />
       <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.0-preview.7.24405.3" />
       <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="9.0.0-preview.7.24405.3" />

SchengenVisaApi/SchengenVisaApi/Controllers/VisaApplicationController.cs

@@ -119,4 +119,20 @@ public class VisaApplicationController(
         await visaApplicationRequestsHandler.SetApplicationStatusFromAuthorityAsync(applicationId, status, cancellationToken);
         return Ok();
     }
+
+    /// <summary> Returns application </summary>
+    /// <remarks> Accessible only for applicant </remarks>
+    [HttpGet("/forApplicant/{applicationId:guid}/download")]
+    [Produces("application/octet-stream")]
+    [ProducesResponseType<object>(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status401Unauthorized)]
+    [ProducesResponseType(StatusCodes.Status403Forbidden)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [Authorize(policy: PolicyConstants.ApplicantPolicy)]
+    public async Task<IActionResult> DownloadApplicationForApplicant(Guid applicationId, CancellationToken cancellationToken)
+    {
+        var result = await visaApplicationRequestsHandler.ApplicationToStreamAsync(applicationId, cancellationToken);
+        result.Position = 0;
+        return File(result, "application/octet-stream", "Application.xlsx");
+    }
 }

SchengenVisaApi/SchengenVisaApi/ExceptionFilters/GlobalExceptionsFilter.cs

@@ -61,6 +61,8 @@ public class GlobalExceptionsFilter : IAsyncExceptionFilter
                 problemDetails.Status = StatusCodes.Status500InternalServerError;
                 problemDetails.Title = "An unhandled error occured";
                 problemDetails.Type = "https://datatracker.ietf.org/doc/html/rfc7231#section-6.6.1";
+
+                Console.WriteLine($"Error!!!: {exception.Message}");
                 break;
         }
 

SchengenVisaApi/VisaApiClient/Client.cs

@@ -1722,6 +1722,129 @@ namespace VisaApiClient
             }
         }
 
+        /// <summary>
+        /// Returns application
+        /// </summary>
+        /// <remarks>
+        /// Accessible only for applicant
+        /// </remarks>
+        /// <returns>Success</returns>
+        /// <exception cref="ApiException">A server side error occurred.</exception>
+        public virtual System.Threading.Tasks.Task<FileResponse> DownloadApplicationForApplicantAsync(System.Guid applicationId)
+        {
+            return DownloadApplicationForApplicantAsync(applicationId, System.Threading.CancellationToken.None);
+        }
+
+        /// <param name="cancellationToken">A cancellation token that can be used by other objects or threads to receive notice of cancellation.</param>
+        /// <summary>
+        /// Returns application
+        /// </summary>
+        /// <remarks>
+        /// Accessible only for applicant
+        /// </remarks>
+        /// <returns>Success</returns>
+        /// <exception cref="ApiException">A server side error occurred.</exception>
+        public virtual async System.Threading.Tasks.Task<FileResponse> DownloadApplicationForApplicantAsync(System.Guid applicationId, System.Threading.CancellationToken cancellationToken)
+        {
+            if (applicationId == null)
+                throw new System.ArgumentNullException("applicationId");
+
+            var client_ = _httpClient;
+            var disposeClient_ = false;
+            try
+            {
+                using (var request_ = await CreateHttpRequestMessageAsync(cancellationToken).ConfigureAwait(false))
+                {
+                    request_.Method = new System.Net.Http.HttpMethod("GET");
+                    request_.Headers.Accept.Add(System.Net.Http.Headers.MediaTypeWithQualityHeaderValue.Parse("application/octet-stream"));
+
+                    var urlBuilder_ = new System.Text.StringBuilder();
+                    if (!string.IsNullOrEmpty(_baseUrl)) urlBuilder_.Append(_baseUrl);
+                    // Operation Path: "forApplicant/{applicationId}/download"
+                    urlBuilder_.Append("forApplicant/");
+                    urlBuilder_.Append(System.Uri.EscapeDataString(ConvertToString(applicationId, System.Globalization.CultureInfo.InvariantCulture)));
+                    urlBuilder_.Append("/download");
+
+                    await PrepareRequestAsync(client_, request_, urlBuilder_, cancellationToken).ConfigureAwait(false);
+
+                    var url_ = urlBuilder_.ToString();
+                    request_.RequestUri = new System.Uri(url_, System.UriKind.RelativeOrAbsolute);
+
+                    await PrepareRequestAsync(client_, request_, url_, cancellationToken).ConfigureAwait(false);
+
+                    var response_ = await client_.SendAsync(request_, System.Net.Http.HttpCompletionOption.ResponseHeadersRead, cancellationToken).ConfigureAwait(false);
+                    var disposeResponse_ = true;
+                    try
+                    {
+                        var headers_ = new System.Collections.Generic.Dictionary<string, System.Collections.Generic.IEnumerable<string>>();
+                        foreach (var item_ in response_.Headers)
+                            headers_[item_.Key] = item_.Value;
+                        if (response_.Content != null && response_.Content.Headers != null)
+                        {
+                            foreach (var item_ in response_.Content.Headers)
+                                headers_[item_.Key] = item_.Value;
+                        }
+
+                        await ProcessResponseAsync(client_, response_, cancellationToken).ConfigureAwait(false);
+
+                        var status_ = (int)response_.StatusCode;
+                        if (status_ == 200 || status_ == 206)
+                        {
+                            var responseStream_ = response_.Content == null ? System.IO.Stream.Null : await response_.Content.ReadAsStreamAsync().ConfigureAwait(false);
+                            var fileResponse_ = new FileResponse(status_, headers_, responseStream_, null, response_);
+                            disposeClient_ = false; disposeResponse_ = false; // response and client are disposed by FileResponse
+                            return fileResponse_;
+                        }
+                        else
+                        if (status_ == 401)
+                        {
+                            var objectResponse_ = await ReadObjectResponseAsync<ProblemDetails>(response_, headers_, cancellationToken).ConfigureAwait(false);
+                            if (objectResponse_.Object == null)
+                            {
+                                throw new ApiException("Response was null which was not expected.", status_, objectResponse_.Text, headers_, null);
+                            }
+                            throw new ApiException<ProblemDetails>("Unauthorized", status_, objectResponse_.Text, headers_, objectResponse_.Object, null);
+                        }
+                        else
+                        if (status_ == 403)
+                        {
+                            var objectResponse_ = await ReadObjectResponseAsync<ProblemDetails>(response_, headers_, cancellationToken).ConfigureAwait(false);
+                            if (objectResponse_.Object == null)
+                            {
+                                throw new ApiException("Response was null which was not expected.", status_, objectResponse_.Text, headers_, null);
+                            }
+                            throw new ApiException<ProblemDetails>("Forbidden", status_, objectResponse_.Text, headers_, objectResponse_.Object, null);
+                        }
+                        else
+                        if (status_ == 404)
+                        {
+                            var objectResponse_ = await ReadObjectResponseAsync<ProblemDetails>(response_, headers_, cancellationToken).ConfigureAwait(false);
+                            if (objectResponse_.Object == null)
+                            {
+                                throw new ApiException("Response was null which was not expected.", status_, objectResponse_.Text, headers_, null);
+                            }
+                            throw new ApiException<ProblemDetails>("Not Found", status_, objectResponse_.Text, headers_, objectResponse_.Object, null);
+                        }
+                        else
+                        {
+                            var responseData_ = response_.Content == null ? null : await response_.Content.ReadAsStringAsync().ConfigureAwait(false);
+                            throw new ApiException("The HTTP status code of the response was not expected (" + status_ + ").", status_, responseData_, headers_, null);
+                        }
+                    }
+                    finally
+                    {
+                        if (disposeResponse_)
+                            response_.Dispose();
+                    }
+                }
+            }
+            finally
+            {
+                if (disposeClient_)
+                    client_.Dispose();
+            }
+        }
+
         protected struct ObjectResponseResult<T>
         {
             public ObjectResponseResult(T responseObject, string responseText)
@@ -2443,6 +2566,41 @@ namespace VisaApiClient
 
     }
 
+    [System.CodeDom.Compiler.GeneratedCode("NSwag", "14.1.0.0 (NJsonSchema v11.0.2.0 (Newtonsoft.Json v13.0.0.0))")]
+    public partial class FileResponse : System.IDisposable
+    {
+        private System.IDisposable? _client;
+        private System.IDisposable? _response;
+
+        public int StatusCode { get; private set; }
+
+        public System.Collections.Generic.IReadOnlyDictionary<string, System.Collections.Generic.IEnumerable<string>> Headers { get; private set; }
+
+        public System.IO.Stream Stream { get; private set; }
+
+        public bool IsPartial
+        {
+            get { return StatusCode == 206; }
+        }
+
+        public FileResponse(int statusCode, System.Collections.Generic.IReadOnlyDictionary<string, System.Collections.Generic.IEnumerable<string>> headers, System.IO.Stream stream, System.IDisposable? client, System.IDisposable? response)
+        {
+            StatusCode = statusCode;
+            Headers = headers;
+            Stream = stream;
+            _client = client;
+            _response = response;
+        }
+
+        public void Dispose()
+        {
+            Stream.Dispose();
+            if (_response != null)
+                _response.Dispose();
+            if (_client != null)
+                _client.Dispose();
+        }
+    }
 
 
     [System.CodeDom.Compiler.GeneratedCode("NSwag", "14.1.0.0 (NJsonSchema v11.0.2.0 (Newtonsoft.Json v13.0.0.0))")]