Add ebook support

src/main/java/stirling/software/SPDF/model/ApplicationProperties.java

@@ -210,6 +210,7 @@ public class ApplicationProperties {
         private String rootURIPath;
         private String customStaticFilePath;
         private Integer maxFileSize;
+        private CustomApplications customApplications;
 
         private Boolean enableAlphaFunctionality;
 
@@ -261,6 +262,14 @@ public class ApplicationProperties {
             this.maxFileSize = maxFileSize;
         }
 
+        public CustomApplications getCustomApplications() {
+            return customApplications != null ? customApplications : new CustomApplications();
+        }
+
+        public void setCustomApplications(CustomApplications customApplications) {
+            this.customApplications = customApplications;
+        }
+
         @Override
         public String toString() {
             return "System [defaultLocale="
@@ -273,10 +282,42 @@ public class ApplicationProperties {
                     + customStaticFilePath
                     + ", maxFileSize="
                     + maxFileSize
+                    + ", customApplications="
+                    + customApplications
                     + ", enableAlphaFunctionality="
                     + enableAlphaFunctionality
                     + "]";
         }
+
+        public static class CustomApplications {
+            private boolean installBookFormats;
+            private boolean installAdvancedHtmlToPDF;
+
+            public boolean isInstallBookFormats() {
+                return installBookFormats;
+            }
+
+            public void setInstallBookFormats(boolean installBookFormats) {
+                this.installBookFormats = installBookFormats;
+            }
+
+            public boolean isInstallAdvancedHtmlToPDF() {
+                return installAdvancedHtmlToPDF;
+            }
+
+            public void setInstallAdvancedHtmlToPDF(boolean installAdvancedHtmlToPDF) {
+                this.installAdvancedHtmlToPDF = installAdvancedHtmlToPDF;
+            }
+
+            @Override
+            public String toString() {
+                return "CustomApplications [installBookFormats="
+                        + installBookFormats
+                        + ", installAdvancedHtmlToPDF="
+                        + installAdvancedHtmlToPDF
+                        + "]";
+            }
+        }
     }
 
     public static class Ui {

src/main/java/stirling/software/SPDF/model/api/converters/PdfToBookRequest.java

@@ -0,0 +1,19 @@
+package stirling.software.SPDF.model.api.converters;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import stirling.software.SPDF.model.api.PDFFile;
+
+@Data
+@EqualsAndHashCode(callSuper = true)
+public class PdfToBookRequest extends PDFFile {
+
+    @Schema(
+            description = "The output Ebook format",
+            allowableValues = {
+                "epub", "mobi", "azw3", "docx", "rtf", "txt", "html", "lit", "fb2", "pdb", "lrf"
+            })
+    private String outputFormat;
+}