Rename salesbook

salesbook.Shared/Core/Utility/UtilityString.cs

@@ -0,0 +1,38 @@
+using System.Globalization;
+
+namespace salesbook.Shared.Core.Utility;
+
+public static class UtilityString
+{
+    public static string ExtractInitials(string fullname)
+    {
+        return string.Concat(fullname
+            .Split(' ', StringSplitOptions.RemoveEmptyEntries)
+            .Take(3)
+            .Select(word => char.ToUpper(word[0])));
+    }
+
+    public static string FirstCharToUpper(this string input) =>
+        input switch
+        {
+            null => throw new ArgumentNullException(nameof(input)),
+            "" => throw new ArgumentException($"{nameof(input)} cannot be empty", nameof(input)),
+            _ => input[0].ToString().ToUpper() + input[1..]
+        };
+
+    public static (string Upper, string Lower, string SentenceCase, string TitleCase) FormatString(string input)
+    {
+        if (string.IsNullOrWhiteSpace(input))
+            return (string.Empty, string.Empty, string.Empty, string.Empty);
+
+        var upper = input.ToUpper();
+        var lower = input.ToLower();
+        
+        var sentenceCase = char.ToUpper(lower[0]) + lower[1..];
+        
+        var textInfo = CultureInfo.CurrentCulture.TextInfo;
+        var titleCase = textInfo.ToTitleCase(lower);
+
+        return (upper, lower, sentenceCase, titleCase);
+    }
+}