Helpers/Export: Code cleanup

Elwig/Helpers/Export/Bki.cs

@@ -8,7 +8,7 @@ namespace Elwig.Helpers.Export {
 
     using Row = Tuple<(string?, string?, string?, string?, string, int, string, bool, int), (string, int, string, string, string, int, string, double, double)>;
 
-    public class Bki : Csv<Row> {
+    public class Bki : CsvFile<Row> {
 
         private readonly string _clientData;
 

Elwig/Helpers/Export/CsvFile.cs

@@ -7,7 +7,7 @@ using System.Text;
 using System.Threading.Tasks;
 
 namespace Elwig.Helpers.Export {
-    public abstract class Csv<T> : IExporter<T> {
+    public abstract class CsvFile<T> : IExporter<T> {
 
         public static string FileExtension => "csv";
 
@@ -15,11 +15,11 @@ namespace Elwig.Helpers.Export {
         protected readonly char Separator;
         protected string? Header;
 
-        public Csv(string filename, char separator = ';') :
+        public CsvFile(string filename, char separator = ';') :
             this(filename, separator, Utils.UTF8) {
         }
 
-        public Csv(string filename, char separator, Encoding encoding) {
+        public CsvFile(string filename, char separator, Encoding encoding) {
             _writer = new StreamWriter(filename, false, encoding);
             Separator = separator;
         }
@@ -61,7 +61,7 @@ namespace Elwig.Helpers.Export {
         public abstract string FormatRow(T row);
     }
 
-    public class CsvSimple : Csv<IEnumerable<object?>> {
+    public class CsvSimple : CsvFile<IEnumerable<object?>> {
 
         public CsvSimple(string filename, char separator, Encoding encoding) :
             base(filename, separator, encoding) {

Elwig/Helpers/Export/Ebics.cs

@@ -9,7 +9,7 @@ using System.Security;
 using System.Threading.Tasks;
 
 namespace Elwig.Helpers.Export {
-    public class Ebics(PaymentVar variant, string filename, int version, Ebics.AddressMode mode = Ebics.AddressMode.Full) : IBankingExporter {
+    public class Ebics(PaymentVar variant, string filename, int version, Ebics.AddressMode mode = Ebics.AddressMode.Full) : IExporter<Transaction> {
 
         public enum AddressMode { Omit = 0, Lines = 1, Full = 2 }
 

Elwig/Helpers/Export/Elba.cs

@@ -1,15 +0,0 @@
-using Elwig.Models.Dtos;
-using System;
-
-namespace Elwig.Helpers.Export {
-    public class Elba : Csv<Transaction>, IBankingExporter {
-
-        public static new string FileExtension => "elba";
-
-        public Elba(string filename) : base(filename) { }
-
-        public override string FormatRow(Transaction row) {
-            throw new NotImplementedException();
-        }
-    }
-}

Elwig/Helpers/Export/IBankingExporter.cs

@@ -1,8 +0,0 @@
-using Elwig.Models.Dtos;
-
-namespace Elwig.Helpers.Export {
-    /// <summary>
-    /// Interface for exporting banking data
-    /// </summary>
-    public interface IBankingExporter : IExporter<Transaction> { }
-}

Elwig/Models/Dtos/DataTable.cs

@@ -33,24 +33,25 @@ namespace Elwig.Models.Dtos {
         public DataTable(string name, string fullName, IEnumerable<T> rows, IEnumerable<(string, string, string?, int?)>? colNames = null) {
             _fields = typeof(T).GetFields();
             _properties = typeof(T).GetProperties();
-            colNames ??= _properties.Select(p => p.Name).Union(_fields.Select(f => f.Name)).Select(i => (i, i, (string?)null, (int?)null)).ToList();
-            _map = colNames.Select(n => (n.Item2, _properties.FirstOrDefault(p => p?.Name == n.Item1, null), _fields.FirstOrDefault(f => f?.Name == n.Item1, null))).ToArray();
+            colNames ??= [.. _properties.Select(p => p.Name).Union(_fields.Select(f => f.Name)).Select(i => (i, i, (string?)null, (int?)null))];
+            _map = [.. colNames.Select(n => (n.Item2, _properties.FirstOrDefault(p => p?.Name == n.Item1, null), _fields.FirstOrDefault(f => f?.Name == n.Item1, null)))];
             Name = name;
             FullName = fullName;
             Rows = rows;
-            ColumnFlatTypes = ColumnTypes.SelectMany(type => {
+            ColumnFlatTypes = [.. ColumnTypes.SelectMany(type => {
                 var elType = type?.GetElementType();
-                return type != null && type.IsValueType && type.Name.StartsWith("ValueTuple") ? type.GetFields().Select(f => f.FieldType) :
-                       type != null && elType != null && type.IsArray && elType.IsValueType && elType.Name.StartsWith("ValueTuple") ? elType.GetFields().Select(f => f.FieldType) :
+                return type != null && type.IsValueType && type.Name.StartsWith("ValueTuple") ? type.GetFields().Select(f => (Type?)f.FieldType) :
+                       type != null && elType != null && type.IsArray && elType.IsValueType && elType.Name.StartsWith("ValueTuple") ? elType.GetFields().Select(f => (Type?)f.FieldType) :
                        [type];
-            }).ToList();
-            ColumnSpans = ColumnTypes.Select(type => {
+            })];
+            ColumnSpans = [.. ColumnTypes.Select(type => {
                 var elType = type?.GetElementType();
                 return type != null && type.IsValueType && type.Name.StartsWith("ValueTuple") ? type.GetFields().Length :
-                       type != null && elType != null && type.IsArray && elType.IsValueType && elType.Name.StartsWith("ValueTuple") ? elType.GetFields().Length : 1;
-            }).ToList();
-            ColumnWidths = colNames.Select(c => c.Item4).ToList();
-            ColumnUnits = colNames.Select(c => c.Item3?.Split("|").Select(p => p.Length == 0 ? null : p).ToArray() ?? []).ToList();
+                       type != null && elType != null && type.IsArray && elType.IsValueType && elType.Name.StartsWith("ValueTuple") ? elType.GetFields().Length :
+                       1;
+            })];
+            ColumnWidths = [.. colNames.Select(c => c.Item4)];
+            ColumnUnits = [.. colNames.Select(c => c.Item3?.Split("|").Select(p => p.Length == 0 ? null : p).ToArray() ?? [])];
         }
 
         public DataTable(string name, string fullName, IEnumerable<T> rows, IEnumerable<(string, string, string?)>? colNames = null) :