templates support

Inspectron.Epson.Templates/Configuration/TemplateConfiguration.cs

@@ -0,0 +1,46 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Inspectron.Epson.Templates.Configuration;
+
+public class TemplateConfiguration
+{
+    [JsonPropertyName("assignments")]
+    public List<TemplateAssignmentJson> Assignments { get; set; } = new();
+
+    [JsonPropertyName("fallbackTemplate")]
+    public string FallbackTemplate { get; set; } = "fallback.template";
+
+    public static TemplateConfiguration Load(string jsonPath)
+    {
+        var json = File.ReadAllText(jsonPath);
+        return JsonSerializer.Deserialize<TemplateConfiguration>(json)
+               ?? new TemplateConfiguration();
+    }
+
+    public static TemplateConfiguration LoadFromJson(string json)
+    {
+        return JsonSerializer.Deserialize<TemplateConfiguration>(json)
+               ?? new TemplateConfiguration();
+    }
+
+    public IEnumerable<TemplateAssignment> GetAssignments()
+    {
+        return Assignments.Select(a => new TemplateAssignment(
+            a.ReceiptType,
+            a.ProfileId,
+            a.TemplatePath));
+    }
+}
+
+public class TemplateAssignmentJson
+{
+    [JsonPropertyName("receiptType")]
+    public int ReceiptType { get; set; }
+
+    [JsonPropertyName("profileId")]
+    public string? ProfileId { get; set; }
+
+    [JsonPropertyName("template")]
+    public string TemplatePath { get; set; } = string.Empty;
+}