Rename solution directory to Elwig

Elwig/Documents/Document.cshtml.cs

@@ -0,0 +1,78 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.IO;
+using System.Windows;
+using Elwig.Helpers;
+
+namespace Elwig.Documents {
+    public abstract class Document : IDisposable {
+
+        private TempFile? PdfFile = null;
+
+        public Document(string title) {
+            Title = title;
+            Header = "<h1>Winzergenossenschaft Matzen</h1>";
+            Footer = "Winzergenossenschaft für Matzen und Umgebung reg. Gen.m.b.H.";
+            Date = DateTime.Today;
+        }
+
+        ~Document() {
+            Dispose();
+        }
+
+        public void Dispose() {
+            PdfFile?.Dispose();
+            PdfFile = null;
+        }
+
+        public string Title { get; set; }
+
+        public string Header { get; set; }
+
+        public string Footer { get; set; }
+
+        public string FullDateString {
+            get => Date.ToString("dddd, d. MMMM yyyy");
+        }
+
+        public DateTime Date { get; set; }
+
+        private async Task<string> Render() {
+            string name;
+            if (this is BusinessLetter) {
+                name = "BusinessLetter";
+            } else {
+                throw new InvalidOperationException();
+            }
+            return await Html.CompileRenderAsync(name, this);
+        }
+
+        public async Task Generate() {
+            var pdf = new TempFile("pdf");
+            using (var tmpHtml = new TempFile("html")) {
+                await File.WriteAllTextAsync(tmpHtml.FilePath, await Render());
+                await Pdf.Convert(tmpHtml.FilePath, pdf.FilePath);
+            }
+            Pdf.UpdateMetadata(pdf.FilePath, Title, "Winzergenossenschaft für Matzen und Umgebung reg. Gen.m.b.H.");
+            PdfFile = pdf;
+        }
+
+        public void SaveTo(string pdfPath) {
+            if (PdfFile == null) throw new InvalidOperationException("Pdf file has not been generated yet");
+            File.Copy(PdfFile.FilePath, pdfPath);
+        }
+
+        public async Task Print() {
+            if (PdfFile == null) throw new InvalidOperationException("Pdf file has not been generated yet");
+            Pdf.Print(PdfFile.FilePath);
+        }
+
+        public void Show() {
+            if (PdfFile == null) throw new InvalidOperationException("Pdf file has not been generated yet");
+            Pdf.Show(PdfFile.NewReference(), Title);
+        }
+    }
+}