More cleanup, handling edge cases, and todos for original creator.

API/Helpers/Builders/KoreaderBookDtoBuilder.cs

@@ -0,0 +1,42 @@
+using API.DTOs.Koreader;
+
+namespace API.Helpers.Builders;
+
+public class KoreaderBookDtoBuilder : IEntityBuilder<KoreaderBookDto>
+{
+    private readonly KoreaderBookDto _dto;
+    public KoreaderBookDto Build() => _dto;
+
+    public KoreaderBookDtoBuilder(string documentHash)
+    {
+        _dto = new KoreaderBookDto()
+        {
+            Document = documentHash,
+            Device = "Kavita"
+        };
+    }
+
+    public KoreaderBookDtoBuilder WithDocument(string documentHash)
+    {
+        _dto.Document = documentHash;
+        return this;
+    }
+
+    public KoreaderBookDtoBuilder WithProgress(string progress)
+    {
+        _dto.Progress = progress;
+        return this;
+    }
+
+    public KoreaderBookDtoBuilder WithPercentage(int? pageNum, int pages)
+    {
+        _dto.Percentage = (pageNum ?? 0) / (float) pages;
+        return this;
+    }
+
+    public KoreaderBookDtoBuilder WithDeviceId(string installId, int userId)
+    {
+        _dto.Device_id = installId;
+        return this;
+    }
+}