Models: Add Dtos/

Elwig/Models/Dtos/DataTable.cs

@@ -0,0 +1,45 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+
+namespace Elwig.Models.Dtos {
+    public class DataTable<T> {
+
+        public string Name { get; set; }
+        public string FullName { get; set; }
+        public IEnumerable<T> Rows { get; private set; }
+        public int RowNum => Rows.Count();
+        public IEnumerable<string> ColumnNames => _fieldMap.Select(m => m.Item2);
+        public int ColNum => ColumnNames.Count();
+        private readonly FieldInfo[] _fields;
+        private readonly (FieldInfo, string)[] _fieldMap;
+
+        public DataTable(string name, string fullName, IEnumerable<T> rows, IEnumerable<(string, string)>? colNames = null) {
+            _fields = typeof(T).GetFields();
+            var dict = colNames?.ToDictionary(n => n.Item1, n => n.Item2);
+            _fieldMap = (dict == null ? _fields.Select(f => (f, f.Name)) : _fields.Select(f => (f, dict[f.Name]))).ToArray();
+            Name = name;
+            FullName = fullName;
+            Rows = rows;
+        }
+
+        public DataTable(string name, IEnumerable<T> rows, IEnumerable<(string, string)>? colNames = null) :
+            this(name, name, rows, colNames) { }
+
+        protected IEnumerable<(string, object?)> GetNamedRowData(T row) {
+            return _fieldMap.Select(i => (i.Item2, i.Item1.GetValue(row)));
+        }
+
+        protected IEnumerable<object?> GetRowData(T row) {
+            return GetNamedRowData(row).Select(i => i.Item2);
+        }
+
+        public IEnumerable<IEnumerable<object?>> GetData() {
+            return Rows.Select(GetRowData);
+        }
+
+        public IEnumerable<IEnumerable<(string, object?)>> GetNamedData() {
+            return Rows.Select(GetNamedRowData);
+        }
+    }
+}