Refactor code structure for improved readability and maintainability

Author: thumer

src/CryptoTracker.Client/Pages/Import.razor

@@ -15,6 +15,7 @@
 builder.Services.AddScoped<ICoinRatesApi, CoinRatesRestClient>();
 builder.Services.AddScoped<IDataImportApi, DataImportRestClient>();
 builder.Services.AddScoped<IImportEntriesApi, ImportEntriesRestClient>();
+builder.Services.AddScoped<IImportOverviewApi, ImportOverviewRestClient>();
 
 builder.Services.AddRadzenComponents();
 

src/CryptoTracker.Client/Pages/Import.razor.cs

@@ -26,6 +26,28 @@ public async Task ImportFileAsync(ImportDocumentType type, string walletName, IB
         response.EnsureSuccessStatusCode();
     }
 
+    public async Task<ImportPreviewResult> PreviewImportAsync(IBrowserFile file)
+    {
+        using var content = new MultipartFormDataContent();
+        using var fileContent = new StreamContent(file.OpenReadStream(MAX_REQUEST_SIZE));
+        fileContent.Headers.ContentType = new MediaTypeHeaderValue(file.ContentType);
+        content.Add(fileContent, "file", file.Name);
+        var response = await _http.PostAsync("api/DataImport/PreviewImport", content);
+        response.EnsureSuccessStatusCode();
+        return await response.Content.ReadFromJsonAsync<ImportPreviewResult>() ?? new ImportPreviewResult(false, "Leere Antwort vom Server.", null, null, null, new List<ImportPreviewTransactionRowDTO>(), false, new List<ImportPreviewTradeRowDTO>(), false);
+    }
+
+    public async Task ImportAutoAsync(string walletName, IBrowserFile file, ImportDocumentType? documentType = null)
+    {
+        using var content = new MultipartFormDataContent();
+        using var fileContent = new StreamContent(file.OpenReadStream(MAX_REQUEST_SIZE));
+        fileContent.Headers.ContentType = new MediaTypeHeaderValue(file.ContentType);
+        content.Add(fileContent, "file", file.Name);
+        content.Add(JsonContent.Create(new ImportAutoRequest { WalletName = walletName, DocumentType = documentType }), "request");
+        var response = await _http.PostAsync("api/DataImport/ImportAuto", content);
+        response.EnsureSuccessStatusCode();
+    }
+
     public async Task ProcessTransactionPairsAsync()
     {
         using var content = new MultipartFormDataContent();

src/CryptoTracker.Client/Program.cs

@@ -0,0 +1,18 @@
+using System.Net.Http.Json;
+using CryptoTracker.Shared;
+
+namespace CryptoTracker.Client.RestClients;
+
+public class ImportOverviewRestClient : IImportOverviewApi
+{
+    private readonly HttpClient _http;
+
+    public ImportOverviewRestClient(HttpClient http)
+    {
+        _http = http;
+    }
+
+    public async Task<ImportOverviewDTO> GetOverviewAsync()
+        => await _http.GetFromJsonAsync<ImportOverviewDTO>("api/ImportOverview/GetOverview")
+           ?? new ImportOverviewDTO(new List<ImportTransactionRowDTO>(), new List<ImportTransactionRowDTO>(), new List<ImportTradeRowDTO>());
+}

src/CryptoTracker.Client/RestClients/DataImportRestClient.cs

@@ -5,5 +5,7 @@ namespace CryptoTracker.Shared;
 public interface IDataImportApi
 {
     Task ImportFileAsync(ImportDocumentType type, string walletName, IBrowserFile file);
+    Task<ImportPreviewResult> PreviewImportAsync(IBrowserFile file);
+    Task ImportAutoAsync(string walletName, IBrowserFile file, ImportDocumentType? documentType = null);
     Task ProcessTransactionPairsAsync();
 }

src/CryptoTracker.Client/RestClients/ImportOverviewRestClient.cs

@@ -0,0 +1,6 @@
+namespace CryptoTracker.Shared;
+
+public interface IImportOverviewApi
+{
+    Task<ImportOverviewDTO> GetOverviewAsync();
+}

src/CryptoTracker.Client/Shared/Api/IDataImportApi.cs

@@ -0,0 +1,8 @@
+namespace CryptoTracker.Shared;
+
+public class ImportAutoRequest
+{
+    public string WalletName { get; set; } = string.Empty;
+
+    public ImportDocumentType? DocumentType { get; set; }
+}

src/CryptoTracker.Client/Shared/Api/IImportOverviewApi.cs

@@ -0,0 +1,5 @@
+namespace CryptoTracker.Shared;
+
+public record ImportOverviewDTO(IList<ImportTransactionRowDTO> Deposits,
+                                IList<ImportTransactionRowDTO> Withdrawals,
+                                IList<ImportTradeRowDTO> Trades);

src/CryptoTracker.Client/Shared/Imports/ImportAutoRequest.cs

@@ -0,0 +1,11 @@
+namespace CryptoTracker.Shared;
+
+public record ImportPreviewResult(bool Success,
+                                  string? ErrorMessage,
+                                  string? DetectedSource,
+                                  ImportDocumentType? DocumentType,
+                                  string? DocumentTypeDisplayName,
+                                  IList<ImportPreviewTransactionRowDTO> TransactionRows,
+                                  bool TransactionsTruncated,
+                                  IList<ImportPreviewTradeRowDTO> TradeRows,
+                                  bool TradesTruncated);