template engine

Inspectron.Epson.TemplateEngine/ReceiptTemplateEngine.cs

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+using System.Text.Json;
+using Inspectron.Epson.PrintServer.Printers.Utils;
+using Inspectron.Epson.TemplateEngine.DataBinding;
+using Inspectron.Epson.TemplateEngine.Parsing;
+using Inspectron.Epson.TemplateEngine.Rendering;
+
+namespace Inspectron.Epson.TemplateEngine;
+
+public class ReceiptTemplateEngine
+{
+    public List<PrintCommand> Render(
+        string xmlTemplate,
+        string jsonData,
+        int lineWidth = 48,
+        int bigFontLineWidth = 24)
+    {
+        // Parse XML template into node tree
+        var parser = new TemplateParser();
+        var receiptNode = parser.Parse(xmlTemplate);
+
+        // Parse JSON data into DataContext
+        JsonElement root;
+        try
+        {
+            root = JsonDocument.Parse(jsonData).RootElement;
+        }
+        catch (JsonException ex)
+        {
+            throw new TemplateRenderingException($"Invalid JSON data: {ex.Message}", ex);
+        }
+
+        var context = new DataContext(root);
+
+        // Render node tree to PrintCommands
+        var renderer = new TemplateRenderer(lineWidth, bigFontLineWidth);
+        return renderer.Render(receiptNode, context);
+    }
+}