Printing: Replace WinziPrint with iText

Elwig/Helpers/Utils.cs

@@ -3,6 +3,7 @@ using Elwig.Documents;
 using Elwig.Helpers.Billing;
 using Elwig.Models;
 using Elwig.Models.Entities;
+using iText.Layout.Element;
 using LinqKit;
 using MailKit.Net.Smtp;
 using MailKit.Security;
@@ -304,23 +305,18 @@ namespace Elwig.Helpers {
         }
 
         public class Footer {
-            private string Text = "";
+            private readonly List<List<object>> Items = [[]];
             private readonly string LineBreak;
-            private readonly string Seperator;
-            private bool FirstLine = true;
-            private bool FirstItemInLine = true;
+            private readonly string Separator;
 
-            public Footer(string lineBreak, string seperator) {
+            public Footer(string lineBreak, string separator) {
                 LineBreak = lineBreak;
-                Seperator = seperator;
+                Separator = separator;
             }
 
-            public Footer Item(string? text) {
+            public Footer Item(object? text) {
                 if (text == null) return this;
-                Text += FirstItemInLine ? (FirstLine ? "" : LineBreak) : Seperator;
-                Text += text;
-                FirstLine = false;
-                FirstItemInLine = false;
+                Items[^1].Add(text);
                 return this;
             }
 
@@ -329,12 +325,28 @@ namespace Elwig.Helpers {
             }
 
             public Footer NextLine() {
-                FirstItemInLine = true;
+                Items.Add([]);
                 return this;
             }
 
             public override string ToString() {
-                return Text;
+                return string.Join(LineBreak, Items.Select(l => string.Join(Separator, l.ToString())));
+            }
+
+            public IList<ILeafElement> ToLeafElements() {
+                var l = new List<ILeafElement>();
+                var first1 = true;
+                foreach (var line in Items) {
+                    if (!first1) l.Add(new Text(LineBreak));
+                    var first2 = true;
+                    foreach (var item in line) {
+                        if (!first2) l.Add(new Text(Separator));
+                        l.Add(item as ILeafElement ?? new Text(item.ToString()));
+                        first2 = false;
+                    }
+                    first1 = false;
+                }
+                return l;
             }
         }