Merge pull request #682 from Stirling-Tools/ebook

Ebook

build.gradle

@@ -12,7 +12,7 @@ plugins {
 import com.github.jk1.license.render.*
 
 group = 'stirling.software'
-version = '0.19.0'
+version = '0.19.1'
 sourceCompatibility = '17'
 
 repositories {

src/main/java/stirling/software/SPDF/config/AppConfig.java

@@ -1,5 +1,8 @@
 package stirling.software.SPDF.config;
 
+import java.nio.file.Files;
+import java.nio.file.Paths;
+
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -57,4 +60,22 @@ public class AppConfig {
         if (appName == null) appName = System.getenv("rateLimit");
         return (appName != null) ? Boolean.valueOf(appName) : false;
     }
+
+    @Bean(name = "RunningInDocker")
+    public boolean runningInDocker() {
+        return Files.exists(Paths.get("/.dockerenv"));
+    }
+
+    @Bean(name = "bookFormatsInstalled")
+    public boolean bookFormatsInstalled() {
+        return applicationProperties.getSystem().getCustomApplications().isInstallBookFormats();
+    }
+
+    @Bean(name = "htmlFormatsInstalled")
+    public boolean htmlFormatsInstalled() {
+        return applicationProperties
+                .getSystem()
+                .getCustomApplications()
+                .isInstallAdvancedHtmlToPDF();
+    }
 }

src/main/java/stirling/software/SPDF/config/EndpointConfiguration.java

@@ -9,11 +9,14 @@ import java.util.concurrent.ConcurrentHashMap;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.context.annotation.DependsOn;
 import org.springframework.stereotype.Service;
 
 import stirling.software.SPDF.model.ApplicationProperties;
 
 @Service
+@DependsOn({"bookFormatsInstalled"})
 public class EndpointConfiguration {
     private static final Logger logger = LoggerFactory.getLogger(EndpointConfiguration.class);
     private Map<String, Boolean> endpointStatuses = new ConcurrentHashMap<>();
@@ -21,9 +24,14 @@ public class EndpointConfiguration {
 
     private final ApplicationProperties applicationProperties;
 
+    private boolean bookFormatsInstalled;
+
     @Autowired
-    public EndpointConfiguration(ApplicationProperties applicationProperties) {
+    public EndpointConfiguration(
+            ApplicationProperties applicationProperties,
+            @Qualifier("bookFormatsInstalled") boolean bookFormatsInstalled) {
         this.applicationProperties = applicationProperties;
+        this.bookFormatsInstalled = bookFormatsInstalled;
         init();
         processEnvironmentConfigs();
     }
@@ -145,6 +153,12 @@ public class EndpointConfiguration {
         addEndpointToGroup("CLI", "ocr-pdf");
         addEndpointToGroup("CLI", "html-to-pdf");
         addEndpointToGroup("CLI", "url-to-pdf");
+        addEndpointToGroup("CLI", "book-to-pdf");
+        addEndpointToGroup("CLI", "pdf-to-book");
+
+        // Calibre
+        addEndpointToGroup("Calibre", "book-to-pdf");
+        addEndpointToGroup("Calibre", "pdf-to-book");
 
         // python
         addEndpointToGroup("Python", "extract-image-scans");
@@ -215,7 +229,9 @@ public class EndpointConfiguration {
     private void processEnvironmentConfigs() {
         List<String> endpointsToRemove = applicationProperties.getEndpoints().getToRemove();
         List<String> groupsToRemove = applicationProperties.getEndpoints().getGroupsToRemove();
-
+        if (!bookFormatsInstalled) {
+            groupsToRemove.add("Calibre");
+        }
         if (endpointsToRemove != null) {
             for (String endpoint : endpointsToRemove) {
                 disableEndpoint(endpoint.trim());

src/main/java/stirling/software/SPDF/config/PostStartupProcesses.java

@@ -0,0 +1,98 @@
+package stirling.software.SPDF.config;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.stereotype.Component;
+
+import jakarta.annotation.PostConstruct;
+import stirling.software.SPDF.model.ApplicationProperties;
+import stirling.software.SPDF.utils.ProcessExecutor;
+import stirling.software.SPDF.utils.ProcessExecutor.ProcessExecutorResult;
+
+@Component
+public class PostStartupProcesses {
+
+    @Autowired ApplicationProperties applicationProperties;
+
+    @Autowired
+    @Qualifier("RunningInDocker")
+    private boolean runningInDocker;
+
+    @Autowired
+    @Qualifier("bookFormatsInstalled")
+    private boolean bookFormatsInstalled;
+
+    @Autowired
+    @Qualifier("htmlFormatsInstalled")
+    private boolean htmlFormatsInstalled;
+
+    private static final Logger logger = LoggerFactory.getLogger(PostStartupProcesses.class);
+
+    @PostConstruct
+    public void runInstallCommandBasedOnEnvironment() throws IOException, InterruptedException {
+        List<List<String>> commands = new ArrayList<>();
+        // Checking for DOCKER_INSTALL_BOOK_FORMATS environment variable
+        if (bookFormatsInstalled) {
+            List<String> tmpList = new ArrayList<>();
+            // Set up the timezone configuration commands
+            tmpList.addAll(
+                    Arrays.asList(
+                            "sh",
+                            "-c",
+                            "echo 'tzdata tzdata/Areas select Europe' | debconf-set-selections; "
+                                    + "echo 'tzdata tzdata/Zones/Europe select Berlin' | debconf-set-selections"));
+            commands.add(tmpList);
+
+            // Install calibre with DEBIAN_FRONTEND set to noninteractive
+            tmpList = new ArrayList<>();
+            tmpList.addAll(
+                    Arrays.asList(
+                            "sh",
+                            "-c",
+                            "DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends calibre"));
+            commands.add(tmpList);
+        }
+
+        // Checking for DOCKER_INSTALL_HTML_FORMATS environment variable
+        if (htmlFormatsInstalled) {
+            List<String> tmpList = new ArrayList<>();
+            // Add -y flag for automatic yes to prompts and --no-install-recommends to reduce size
+            tmpList.addAll(
+                    Arrays.asList(
+                            "apt-get", "install", "wkhtmltopdf", "-y", "--no-install-recommends"));
+            commands.add(tmpList);
+        }
+
+        if (!commands.isEmpty()) {
+            // Run the command
+            if (runningInDocker) {
+                List<String> tmpList = new ArrayList<>();
+                tmpList.addAll(Arrays.asList("apt-get", "update"));
+                commands.add(0, tmpList);
+
+                for (List<String> list : commands) {
+                    ProcessExecutorResult returnCode =
+                            ProcessExecutor.getInstance(ProcessExecutor.Processes.INSTALL_APP, true)
+                                    .runCommandWithOutputHandling(list);
+                    logger.info("RC for app installs {}", returnCode.getRc());
+                }
+            } else {
+
+                logger.info(
+                        "Not running inside Docker so skipping automated install process with command.");
+            }
+
+        } else {
+            if (runningInDocker) {
+                logger.info("No custom apps to install.");
+            }
+        }
+    }
+}

src/main/java/stirling/software/SPDF/config/security/UserAuthenticationFilter.java

@@ -115,4 +115,4 @@ public class UserAuthenticationFilter extends OncePerRequestFilter {
 
         return false;
     }
-}
+}

src/main/java/stirling/software/SPDF/controller/api/converters/ConvertBookToPDFController.java

@@ -0,0 +1,68 @@
+package stirling.software.SPDF.controller.api.converters;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+
+import stirling.software.SPDF.model.api.GeneralFile;
+import stirling.software.SPDF.utils.FileToPdf;
+import stirling.software.SPDF.utils.WebResponseUtils;
+
+@RestController
+@Tag(name = "Convert", description = "Convert APIs")
+@RequestMapping("/api/v1/convert")
+public class ConvertBookToPDFController {
+
+    @Autowired
+    @Qualifier("bookFormatsInstalled")
+    private boolean bookFormatsInstalled;
+
+    @PostMapping(consumes = "multipart/form-data", value = "/book/pdf")
+    @Operation(
+            summary =
+                    "Convert a BOOK/comic (*.epub | *.mobi | *.azw3 | *.fb2 | *.txt | *.docx) to PDF",
+            description =
+                    "(Requires bookFormatsInstalled flag and Calibre installed) This endpoint takes an BOOK/comic (*.epub | *.mobi | *.azw3 | *.fb2 | *.txt | *.docx)  input and converts it to PDF format.")
+    public ResponseEntity<byte[]> HtmlToPdf(@ModelAttribute GeneralFile request) throws Exception {
+        MultipartFile fileInput = request.getFileInput();
+
+        if (!bookFormatsInstalled) {
+            throw new IllegalArgumentException(
+                    "bookFormatsInstalled flag is False, this functionality is not avaiable");
+        }
+
+        if (fileInput == null) {
+            throw new IllegalArgumentException("Please provide a file for conversion.");
+        }
+
+        String originalFilename = fileInput.getOriginalFilename();
+
+        if (originalFilename != null) {
+            String originalFilenameLower = originalFilename.toLowerCase();
+            if (!originalFilenameLower.endsWith(".epub")
+                    && !originalFilenameLower.endsWith(".mobi")
+                    && !originalFilenameLower.endsWith(".azw3")
+                    && !originalFilenameLower.endsWith(".fb2")
+                    && !originalFilenameLower.endsWith(".txt")
+                    && !originalFilenameLower.endsWith(".docx")) {
+                throw new IllegalArgumentException(
+                        "File must be in .epub, .mobi, .azw3, .fb2, .txt, or .docx format.");
+            }
+        }
+        byte[] pdfBytes = FileToPdf.convertBookTypeToPdf(fileInput.getBytes(), originalFilename);
+
+        String outputFilename =
+                originalFilename.replaceFirst("[.][^.]+$", "")
+                        + ".pdf"; // Remove file extension and append .pdf
+
+        return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
+    }
+}

src/main/java/stirling/software/SPDF/controller/api/converters/ConvertHtmlToPDF.java

@@ -1,5 +1,7 @@
 package stirling.software.SPDF.controller.api.converters;
 
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PostMapping;
@@ -19,6 +21,10 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @RequestMapping("/api/v1/convert")
 public class ConvertHtmlToPDF {
 
+    @Autowired
+    @Qualifier("htmlFormatsInstalled")
+    private boolean htmlFormatsInstalled;
+
     @PostMapping(consumes = "multipart/form-data", value = "/html/pdf")
     @Operation(
             summary = "Convert an HTML or ZIP (containing HTML and CSS) to PDF",
@@ -37,7 +43,9 @@ public class ConvertHtmlToPDF {
                 || (!originalFilename.endsWith(".html") && !originalFilename.endsWith(".zip"))) {
             throw new IllegalArgumentException("File must be either .html or .zip format.");
         }
-        byte[] pdfBytes = FileToPdf.convertHtmlToPdf(fileInput.getBytes(), originalFilename);
+        byte[] pdfBytes =
+                FileToPdf.convertHtmlToPdf(
+                        fileInput.getBytes(), originalFilename, htmlFormatsInstalled);
 
         String outputFilename =
                 originalFilename.replaceFirst("[.][^.]+$", "")

src/main/java/stirling/software/SPDF/controller/api/converters/ConvertMarkdownToPdf.java

@@ -3,6 +3,8 @@ package stirling.software.SPDF.controller.api.converters;
 import org.commonmark.node.Node;
 import org.commonmark.parser.Parser;
 import org.commonmark.renderer.html.HtmlRenderer;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PostMapping;
@@ -22,6 +24,10 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @RequestMapping("/api/v1/convert")
 public class ConvertMarkdownToPdf {
 
+    @Autowired
+    @Qualifier("htmlFormatsInstalled")
+    private boolean htmlFormatsInstalled;
+
     @PostMapping(consumes = "multipart/form-data", value = "/markdown/pdf")
     @Operation(
             summary = "Convert a Markdown file to PDF",
@@ -46,7 +52,9 @@ public class ConvertMarkdownToPdf {
         HtmlRenderer renderer = HtmlRenderer.builder().build();
         String htmlContent = renderer.render(document);
 
-        byte[] pdfBytes = FileToPdf.convertHtmlToPdf(htmlContent.getBytes(), "converted.html");
+        byte[] pdfBytes =
+                FileToPdf.convertHtmlToPdf(
+                        htmlContent.getBytes(), "converted.html", htmlFormatsInstalled);
 
         String outputFilename =
                 originalFilename.replaceFirst("[.][^.]+$", "")

src/main/java/stirling/software/SPDF/controller/api/converters/ConvertPDFToBookController.java

@@ -0,0 +1,101 @@
+package stirling.software.SPDF.controller.api.converters;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+
+import stirling.software.SPDF.model.api.converters.PdfToBookRequest;
+import stirling.software.SPDF.utils.ProcessExecutor;
+import stirling.software.SPDF.utils.ProcessExecutor.ProcessExecutorResult;
+import stirling.software.SPDF.utils.WebResponseUtils;
+
+@RestController
+@Tag(name = "Convert", description = "Convert APIs")
+@RequestMapping("/api/v1/convert")
+public class ConvertPDFToBookController {
+
+    @Autowired
+    @Qualifier("bookFormatsInstalled")
+    private boolean bookFormatsInstalled;
+
+    @PostMapping(consumes = "multipart/form-data", value = "/pdf/book")
+    @Operation(
+            summary =
+                    "Convert a PDF to a Book/comic (*.epub | *.mobi | *.azw3 | *.fb2 | *.txt | *.docx .. (others to include by chatgpt) to PDF",
+            description =
+                    "(Requires bookFormatsInstalled flag and Calibre installed) This endpoint Convert a PDF to a Book/comic (*.epub | *.mobi | *.azw3 | *.fb2 | *.txt | *.docx .. (others to include by chatgpt) to PDF")
+    public ResponseEntity<byte[]> HtmlToPdf(@ModelAttribute PdfToBookRequest request)
+            throws Exception {
+        MultipartFile fileInput = request.getFileInput();
+
+        if (!bookFormatsInstalled) {
+            throw new IllegalArgumentException(
+                    "bookFormatsInstalled flag is False, this functionality is not avaiable");
+        }
+
+        if (fileInput == null) {
+            throw new IllegalArgumentException("Please provide a file for conversion.");
+        }
+
+        // Validate the output format
+        String outputFormat = request.getOutputFormat().toLowerCase();
+        List<String> allowedFormats =
+                Arrays.asList(
+                        "epub", "mobi", "azw3", "docx", "rtf", "txt", "html", "lit", "fb2", "pdb",
+                        "lrf");
+        if (!allowedFormats.contains(outputFormat)) {
+            throw new IllegalArgumentException("Invalid output format: " + outputFormat);
+        }
+
+        byte[] outputFileBytes;
+        List<String> command = new ArrayList<>();
+        Path tempOutputFile =
+                Files.createTempFile(
+                        "output_",
+                        "." + outputFormat); // Use the output format for the file extension
+        Path tempInputFile = null;
+
+        try {
+            // Create temp input file from the provided PDF
+            tempInputFile = Files.createTempFile("input_", ".pdf"); // Assuming input is always PDF
+            Files.write(tempInputFile, fileInput.getBytes());
+
+            command.add("ebook-convert");
+            command.add(tempInputFile.toString());
+            command.add(tempOutputFile.toString());
+
+            ProcessExecutorResult returnCode =
+                    ProcessExecutor.getInstance(ProcessExecutor.Processes.CALIBRE)
+                            .runCommandWithOutputHandling(command);
+
+            outputFileBytes = Files.readAllBytes(tempOutputFile);
+        } finally {
+            // Clean up temporary files
+            if (tempInputFile != null) {
+                Files.deleteIfExists(tempInputFile);
+            }
+            Files.deleteIfExists(tempOutputFile);
+        }
+
+        String outputFilename =
+                fileInput.getOriginalFilename().replaceFirst("[.][^.]+$", "")
+                        + "."
+                        + outputFormat; // Remove file extension and append .pdf
+
+        return WebResponseUtils.bytesToWebResponse(outputFileBytes, outputFilename);
+    }
+}

src/main/java/stirling/software/SPDF/controller/api/converters/ConvertWebsiteToPDF.java

@@ -6,6 +6,8 @@ import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.List;
 
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PostMapping;
@@ -26,6 +28,10 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @RequestMapping("/api/v1/convert")
 public class ConvertWebsiteToPDF {
 
+    @Autowired
+    @Qualifier("htmlFormatsInstalled")
+    private boolean htmlFormatsInstalled;
+
     @PostMapping(consumes = "multipart/form-data", value = "/url/pdf")
     @Operation(
             summary = "Convert a URL to a PDF",
@@ -47,7 +53,11 @@ public class ConvertWebsiteToPDF {
 
             // Prepare the OCRmyPDF command
             List<String> command = new ArrayList<>();
-            command.add("weasyprint");
+            if (!htmlFormatsInstalled) {
+                command.add("weasyprint");
+            } else {
+                command.add("wkhtmltopdf");
+            }
             command.add(URL);
             command.add(tempOutputFile.toString());
 

src/main/java/stirling/software/SPDF/controller/web/ConverterWebController.java

@@ -1,5 +1,6 @@
 package stirling.software.SPDF.controller.web;
 
+import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.GetMapping;
@@ -12,6 +13,22 @@ import io.swagger.v3.oas.annotations.tags.Tag;
 @Tag(name = "Convert", description = "Convert APIs")
 public class ConverterWebController {
 
+    @ConditionalOnExpression("#{bookFormatsInstalled}")
+    @GetMapping("/book-to-pdf")
+    @Hidden
+    public String convertBookToPdfForm(Model model) {
+        model.addAttribute("currentPage", "book-to-pdf");
+        return "convert/book-to-pdf";
+    }
+
+    @ConditionalOnExpression("#{bookFormatsInstalled}")
+    @GetMapping("/pdf-to-book")
+    @Hidden
+    public String convertPdfToBookForm(Model model) {
+        model.addAttribute("currentPage", "pdf-to-book");
+        return "convert/pdf-to-book";
+    }
+
     @GetMapping("/img-to-pdf")
     @Hidden
     public String convertImgToPdfForm(Model model) {

src/main/java/stirling/software/SPDF/controller/web/HomeWebController.java

@@ -1,7 +1,8 @@
 package stirling.software.SPDF.controller.web;
 
 import java.io.IOException;
-import java.nio.file.Files;
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
 import java.util.List;
 import java.util.Map;
 
@@ -38,7 +39,8 @@ public class HomeWebController {
         model.addAttribute("currentPage", "licenses");
         Resource resource = new ClassPathResource("static/3rdPartyLicenses.json");
         try {
-            String json = new String(Files.readAllBytes(resource.getFile().toPath()));
+            InputStream is = resource.getInputStream();
+            String json = new String(is.readAllBytes(), StandardCharsets.UTF_8);
             ObjectMapper mapper = new ObjectMapper();
             Map<String, List<Dependency>> data =
                     mapper.readValue(json, new TypeReference<Map<String, List<Dependency>>>() {});

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;
+}

src/main/java/stirling/software/SPDF/utils/FileToPdf.java

@@ -14,7 +14,9 @@ import java.util.zip.ZipInputStream;
 import stirling.software.SPDF.utils.ProcessExecutor.ProcessExecutorResult;
 
 public class FileToPdf {
-    public static byte[] convertHtmlToPdf(byte[] fileBytes, String fileName)
+
+    public static byte[] convertHtmlToPdf(
+            byte[] fileBytes, String fileName, boolean htmlFormatsInstalled)
             throws IOException, InterruptedException {
 
         Path tempOutputFile = Files.createTempFile("output_", ".pdf");
@@ -29,11 +31,22 @@ public class FileToPdf {
             }
 
             List<String> command = new ArrayList<>();
-            command.add("weasyprint");
+            if (!htmlFormatsInstalled) {
+                command.add("weasyprint");
+            } else {
+                command.add("wkhtmltopdf");
+                command.add("--enable-local-file-access");
+            }
+
             command.add(tempInputFile.toString());
             command.add(tempOutputFile.toString());
             ProcessExecutorResult returnCode;
             if (fileName.endsWith(".zip")) {
+
+                if (htmlFormatsInstalled) {
+                    // command.add(1, "--allow");
+                    // command.add(2, tempInputFile.getParent().toString());
+                }
                 returnCode =
                         ProcessExecutor.getInstance(ProcessExecutor.Processes.WEASYPRINT)
                                 .runCommandWithOutputHandling(
@@ -97,4 +110,38 @@ public class FileToPdf {
             return htmlFiles.get(0);
         }
     }
+
+    public static byte[] convertBookTypeToPdf(byte[] bytes, String originalFilename)
+            throws IOException, InterruptedException {
+        if (originalFilename == null || originalFilename.lastIndexOf('.') == -1) {
+            throw new IllegalArgumentException("Invalid original filename.");
+        }
+
+        String fileExtension = originalFilename.substring(originalFilename.lastIndexOf('.'));
+        List<String> command = new ArrayList<>();
+        Path tempOutputFile = Files.createTempFile("output_", ".pdf");
+        Path tempInputFile = null;
+
+        try {
+            // Create temp file with appropriate extension
+            tempInputFile = Files.createTempFile("input_", fileExtension);
+            Files.write(tempInputFile, bytes);
+
+            command.add("ebook-convert");
+            command.add(tempInputFile.toString());
+            command.add(tempOutputFile.toString());
+
+            ProcessExecutorResult returnCode =
+                    ProcessExecutor.getInstance(ProcessExecutor.Processes.CALIBRE)
+                            .runCommandWithOutputHandling(command);
+
+            return Files.readAllBytes(tempOutputFile);
+        } finally {
+            // Clean up temporary files
+            if (tempInputFile != null) {
+                Files.deleteIfExists(tempInputFile);
+            }
+            Files.deleteIfExists(tempOutputFile);
+        }
+    }
 }

src/main/java/stirling/software/SPDF/utils/ProcessExecutor.java

@@ -4,26 +4,39 @@ import java.io.BufferedReader;
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStreamReader;
+import java.io.InterruptedIOException;
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.Semaphore;
+import java.util.concurrent.TimeUnit;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class ProcessExecutor {
 
+    private static final Logger logger = LoggerFactory.getLogger(ProcessExecutor.class);
+
     public enum Processes {
         LIBRE_OFFICE,
         OCR_MY_PDF,
         PYTHON_OPENCV,
         GHOSTSCRIPT,
-        WEASYPRINT
+        WEASYPRINT,
+        INSTALL_APP,
+        CALIBRE
     }
 
     private static final Map<Processes, ProcessExecutor> instances = new ConcurrentHashMap<>();
 
     public static ProcessExecutor getInstance(Processes processType) {
+        return getInstance(processType, true);
+    }
+
+    public static ProcessExecutor getInstance(Processes processType, boolean liveUpdates) {
         return instances.computeIfAbsent(
                 processType,
                 key -> {
@@ -34,15 +47,32 @@ public class ProcessExecutor {
                                 case PYTHON_OPENCV -> 8;
                                 case GHOSTSCRIPT -> 16;
                                 case WEASYPRINT -> 16;
+                                case INSTALL_APP -> 1;
+                                case CALIBRE -> 1;
                             };
-                    return new ProcessExecutor(semaphoreLimit);
+
+                    long timeoutMinutes =
+                            switch (key) {
+                                case LIBRE_OFFICE -> 30;
+                                case OCR_MY_PDF -> 30;
+                                case PYTHON_OPENCV -> 30;
+                                case GHOSTSCRIPT -> 5;
+                                case WEASYPRINT -> 30;
+                                case INSTALL_APP -> 60;
+                                case CALIBRE -> 30;
+                            };
+                    return new ProcessExecutor(semaphoreLimit, liveUpdates, timeoutMinutes);
                 });
     }
 
     private final Semaphore semaphore;
+    private final boolean liveUpdates;
+    private long timeoutDuration;
 
-    private ProcessExecutor(int semaphoreLimit) {
+    private ProcessExecutor(int semaphoreLimit, boolean liveUpdates, long timeout) {
         this.semaphore = new Semaphore(semaphoreLimit);
+        this.liveUpdates = liveUpdates;
+        this.timeoutDuration = timeout;
     }
 
     public ProcessExecutorResult runCommandWithOutputHandling(List<String> command)
@@ -52,12 +82,12 @@ public class ProcessExecutor {
 
     public ProcessExecutorResult runCommandWithOutputHandling(
             List<String> command, File workingDirectory) throws IOException, InterruptedException {
-        int exitCode = 1;
         String messages = "";
+        int exitCode = 1;
         semaphore.acquire();
         try {
 
-            System.out.print("Running command: " + String.join(" ", command));
+            logger.info("Running command: " + String.join(" ", command));
             ProcessBuilder processBuilder = new ProcessBuilder(command);
 
             // Use the working directory if it's set
@@ -81,7 +111,11 @@ public class ProcessExecutor {
                                     String line;
                                     while ((line = errorReader.readLine()) != null) {
                                         errorLines.add(line);
+                                        if (liveUpdates) logger.info(line);
                                     }
+                                } catch (InterruptedIOException e) {
+                                    logger.warn(
+                                            "Error reader thread was interrupted due to timeout.");
                                 } catch (IOException e) {
                                     e.printStackTrace();
                                 }
@@ -98,7 +132,11 @@ public class ProcessExecutor {
                                     String line;
                                     while ((line = outputReader.readLine()) != null) {
                                         outputLines.add(line);
+                                        if (liveUpdates) logger.info(line);
                                     }
+                                } catch (InterruptedIOException e) {
+                                    logger.warn(
+                                            "Error reader thread was interrupted due to timeout.");
                                 } catch (IOException e) {
                                     e.printStackTrace();
                                 }
@@ -108,29 +146,42 @@ public class ProcessExecutor {
             outputReaderThread.start();
 
             // Wait for the conversion process to complete
-            exitCode = process.waitFor();
+            boolean finished = process.waitFor(timeoutDuration, TimeUnit.MINUTES);
 
+            if (!finished) {
+                // Terminate the process
+                process.destroy();
+                // Interrupt the reader threads
+                errorReaderThread.interrupt();
+                outputReaderThread.interrupt();
+                throw new IOException("Process timeout exceeded.");
+            }
+            exitCode = process.exitValue();
             // Wait for the reader threads to finish
             errorReaderThread.join();
             outputReaderThread.join();
 
-            if (outputLines.size() > 0) {
+            if (!liveUpdates) {
-                String outputMessage = String.join("\n", outputLines);
+                if (outputLines.size() > 0) {
-                messages += outputMessage;
+                    String outputMessage = String.join("\n", outputLines);
-                System.out.println("Command output:\n" + outputMessage);
+                    messages += outputMessage;
-            }
+                    logger.info("Command output:\n" + outputMessage);
-
-            if (errorLines.size() > 0) {
-                String errorMessage = String.join("\n", errorLines);
-                messages += errorMessage;
-                System.out.println("Command error output:\n" + errorMessage);
-                if (exitCode != 0) {
-                    throw new IOException(
-                            "Command process failed with exit code "
-                                    + exitCode
-                                    + ". Error message: "
-                                    + errorMessage);
                 }
+
+                if (errorLines.size() > 0) {
+                    String errorMessage = String.join("\n", errorLines);
+                    messages += errorMessage;
+                    logger.warn("Command error output:\n" + errorMessage);
+                    if (exitCode != 0) {
+                        throw new IOException(
+                                "Command process failed with exit code "
+                                        + exitCode
+                                        + ". Error message: "
+                                        + errorMessage);
+                    }
+                }
+            } else if (exitCode != 0) {
+                throw new IOException("Command process failed with exit code " + exitCode);
             }
         } finally {
             semaphore.release();

src/main/resources/settings.yml.template

@@ -9,10 +9,14 @@ security:
   loginResetTimeMinutes : 120 # lock account for 2 hours after x attempts
   
 system:
+  
   defaultLocale: 'en-US' # Set the default language (e.g. 'de-DE', 'fr-FR', etc)
   googlevisibility: false # 'true' to allow Google visibility (via robots.txt), 'false' to disallow
   enableAlphaFunctionality: false # Set to enable functionality which might need more testing before it fully goes live (This feature might make no changes)
-
+  customApplications:
+    installBookFormats: false # Installs Calibre for book format conversion (For non docker it must be manually downloaded but will need to be true to show in UI)
+    installAdvancedHtmlToPDF: false # DO NOT USE EXTERNALLY, NOT SAFE! Install wkHtmlToPDF (For non docker it must be manually downloaded but will need to be true to show in UI)
+  
 #ui:
 #  appName: exampleAppName # Application's visible name
 #  homeDescription: I am a description # Short description or tagline shown on homepage.

src/main/resources/static/images/book.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-book" viewBox="0 0 16 16">
+  <path d="M1 2.828c.885-.37 2.154-.769 3.388-.893 1.33-.134 2.458.063 3.112.752v9.746c-.935-.53-2.12-.603-3.213-.493-1.18.12-2.37.461-3.287.811zm7.5-.141c.654-.689 1.782-.886 3.112-.752 1.234.124 2.503.523 3.388.893v9.923c-.918-.35-2.107-.692-3.287-.81-1.094-.111-2.278-.039-3.213.492zM8 1.783C7.015.936 5.587.81 4.287.94c-1.514.153-3.042.672-3.994 1.105A.5.5 0 0 0 0 2.5v11a.5.5 0 0 0 .707.455c.882-.4 2.303-.881 3.68-1.02 1.409-.142 2.59.087 3.223.877a.5.5 0 0 0 .78 0c.633-.79 1.814-1.019 3.222-.877 1.378.139 2.8.62 3.681 1.02A.5.5 0 0 0 16 13.5v-11a.5.5 0 0 0-.293-.455c-.952-.433-2.48-.952-3.994-1.105C10.413.809 8.985.936 8 1.783"/>
+</svg>

src/main/resources/static/js/multitool/PdfContainer.js

@@ -209,20 +209,21 @@ class PdfContainer {
 
     async exportPdf() {
         const pdfDoc = await PDFLib.PDFDocument.create();
-        for (var i=0; i<this.pagesContainer.childNodes.length; i++) {
+	    const pageContainers = this.pagesContainer.querySelectorAll('.page-container'); // Select all .page-container elements
-            const img = this.pagesContainer.childNodes[i].querySelector("img");
+	    for (var i = 0; i < pageContainers.length; i++) {
-            if (!img) continue;
+	        const img = pageContainers[i].querySelector("img"); // Find the img element within each .page-container
-            const pages = await pdfDoc.copyPages(img.doc, [img.pageIdx])
+	        if (!img) continue;
-            const page = pages[0];
+	        const pages = await pdfDoc.copyPages(img.doc, [img.pageIdx])
-
+	        const page = pages[0];
-            const rotation = img.style.rotate;
+	
-            if (rotation) {
+	        const rotation = img.style.rotate;
-                const rotationAngle = parseInt(rotation.replace(/[^\d-]/g, ''));
+	        if (rotation) {
-                page.setRotation(PDFLib.degrees(page.getRotation().angle + rotationAngle))
+	            const rotationAngle = parseInt(rotation.replace(/[^\d-]/g, ''));
-            }
+	            page.setRotation(PDFLib.degrees(page.getRotation().angle + rotationAngle))
-            
+	        }
-            pdfDoc.addPage(page);
+	        
-        }
+	        pdfDoc.addPage(page);
+	    }
         const pdfBytes = await pdfDoc.save();
         const pdfBlob = new Blob([pdfBytes], { type: 'application/pdf' });
         const url = URL.createObjectURL(pdfBlob);

src/main/resources/templates/convert/book-to-pdf.html

@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html th:lang="${#locale.toString()}" th:lang-direction="#{language.direction}" xmlns:th="http://www.thymeleaf.org">
+
+<th:block th:insert="~{fragments/common :: head(title=#{BookToPDF.title}, header=#{BookToPDF.header})}"></th:block>
+<body>
+    <th:block th:insert="~{fragments/common :: game}"></th:block>
+    <div id="page-container">
+        <div id="content-wrap">
+            <div th:insert="~{fragments/navbar.html :: navbar}"></div>
+            <br> <br>
+            <div class="container">
+                <div class="row justify-content-center">
+                    <div class="col-md-6">
+                        <h2 th:text="#{BookToPDF.header}"></h2>
+                        <form method="post" enctype="multipart/form-data" th:action="@{api/v1/convert/book/pdf}">
+                            <div th:replace="~{fragments/common :: fileSelector(name='fileInput', multiple=false)}"></div>
+                            <br>
+                            <button type="submit" id="submitBtn" class="btn btn-primary" th:text="#{BookToPDF.submit}"></button>
+
+                        </form>
+                        <p class="mt-3" th:text="#{BookToPDF.help}"></p>
+                        <p class="mt-3" th:text="#{BookToPDF.credit}"></p>
+                    </div>
+                </div>
+            </div>
+        </div>
+        <div th:insert="~{fragments/footer.html :: footer}"></div>
+    </div>
+</body>
+</html>

src/main/resources/templates/convert/pdf-to-book.html

@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<html th:lang="${#locale.toString()}"
+	th:lang-direction="#{language.direction}"
+	xmlns:th="http://www.thymeleaf.org">
+
+<th:block
+	th:insert="~{fragments/common :: head(title=#{PDFToBook.title}, header=#{PDFToBook.header})}"></th:block>
+
+<body>
+	<th:block th:insert="~{fragments/common :: game}"></th:block>
+	<div id="page-container">
+		<div id="content-wrap">
+			<div th:insert="~{fragments/navbar.html :: navbar}"></div>
+			<br> <br>
+			<div class="container">
+				<div class="row justify-content-center">
+					<div class="col-md-6">
+						<h2 th:text="#{PDFToBook.header}"></h2>
+						<form method="post" enctype="multipart/form-data"
+							th:action="@{api/v1/convert/pdf/book}">
+							<div
+								th:replace="~{fragments/common :: fileSelector(name='fileInput', multiple=false, accept='application/pdf')}"></div>
+
+							<div class="mb-3">
+								<label th:text="#{PDFToBook.selectText.1}"></label> <select
+									class="form-control" name="outputFormat">
+									<option value="epub">EPUB</option>
+									<option value="mobi">MOBI</option>
+									<option value="azw3">AZW3</option>
+									<option value="docx">DOCX</option>
+									<option value="rtf">RTF</option>
+									<option value="txt">TXT</option>
+									<option value="html">HTML</option>
+									<option value="lit">LIT</option>
+									<option value="fb2">FB2</option>
+									<option value="pdb">PDB</option>
+									<option value="lrf">LRF</option>
+								</select>
+
+							</div>
+							<br>
+							<button type="submit" id="submitBtn" class="btn btn-primary"
+								th:text="#{PDFToBook.submit}"></button>
+
+						</form>
+						<p class="mt-3" th:text="#{PDFToBook.help}"></p>
+						<p class="mt-3" th:text="#{PDFToBook.credit}"></p>
+					</div>
+				</div>
+			</div>
+		</div>
+		<div th:insert="~{fragments/footer.html :: footer}"></div>
+	</div>
+</body>
+</html>

src/main/resources/templates/fragments/navbar.html

@@ -77,6 +77,7 @@
                             <div th:replace="~{fragments/navbarEntry :: navbarEntry ('html-to-pdf', 'images/html.svg', 'home.HTMLToPDF.title', 'home.HTMLToPDF.desc', 'HTMLToPDF.tags')}"></div>
                             <div th:replace="~{fragments/navbarEntry :: navbarEntry ('url-to-pdf', 'images/url.svg', 'home.URLToPDF.title', 'home.URLToPDF.desc', 'URLToPDF.tags')}"></div>
                             <div th:replace="~{fragments/navbarEntry :: navbarEntry ('markdown-to-pdf', 'images/markdown.svg', 'home.MarkdownToPDF.title', 'home.MarkdownToPDF.desc', 'MarkdownToPDF.tags')}"></div>
+                            <div th:replace="~{fragments/navbarEntry :: navbarEntry ('book-to-pdf', 'images/book.svg', 'home.BookToPDF.title', 'home.BookToPDF.desc', 'BookToPDF.tags')}"></div>
                             <hr class="dropdown-divider">
                             <div th:replace="~{fragments/navbarEntry :: navbarEntry ('pdf-to-img', 'images/image.svg', 'home.pdfToImage.title', 'home.pdfToImage.desc', 'pdfToImage.tags')}"></div>
                             <div th:replace="~{fragments/navbarEntry :: navbarEntry ('pdf-to-word', 'images/file-earmark-word.svg', 'home.PDFToWord.title', 'home.PDFToWord.desc', 'PDFToWord.tags')}"></div>
@@ -86,6 +87,7 @@
                             <div th:replace="~{fragments/navbarEntry :: navbarEntry ('pdf-to-xml', 'images/filetype-xml.svg', 'home.PDFToXML.title', 'home.PDFToXML.desc', 'PDFToXML.tags')}"></div>
                             <div th:replace="~{fragments/navbarEntry :: navbarEntry ('pdf-to-pdfa', 'images/file-earmark-pdf.svg', 'home.pdfToPDFA.title', 'home.pdfToPDFA.desc', 'pdfToPDFA.tags')}"></div>
 							<div th:replace="~{fragments/navbarEntry :: navbarEntry ('pdf-to-csv', 'images/pdf-csv.svg', 'home.tableExtraxt.title', 'home.tableExtraxt.desc', 'pdfToPDFA.tags')}"></div>
+                        	<div th:replace="~{fragments/navbarEntry :: navbarEntry ('pdf-to-book', 'images/book.svg', 'home.PDFToBook.title', 'home.PDFToBook.desc', 'PDFToBook.tags')}"></div>
                         </div>
                     </li>
 

src/main/resources/templates/home.html

@@ -99,6 +99,8 @@
 				<div th:replace="~{fragments/card :: card(id='split-by-size-or-count', cardTitle=#{home.autoSizeSplitPDF.title}, cardText=#{home.autoSizeSplitPDF.desc}, cardLink='split-by-size-or-count', svgPath='images/layout-split.svg')}"></div>
                 <div th:replace="~{fragments/card :: card(id='overlay-pdf', cardTitle=#{home.overlay-pdfs.title}, cardText=#{home.overlay-pdfs.desc}, cardLink='overlay-pdf', svgPath='images/overlay.svg')}"></div>
                 <div th:replace="~{fragments/card :: card(id='split-pdf-by-sections', cardTitle=#{home.split-by-sections.title}, cardText=#{home.split-by-sections.desc}, cardLink='split-pdf-by-sections', svgPath='images/layout-split.svg')}"></div>
+                <div th:replace="~{fragments/card :: card(id='book-to-pdf', cardTitle=#{home.BookToPDF.title}, cardText=#{home.BookToPDF.desc}, cardLink='book-to-pdf', svgPath='images/book.svg')}"></div>
+                <div th:replace="~{fragments/card :: card(id='pdf-to-book', cardTitle=#{home.PDFToBook.title}, cardText=#{home.PDFToBook.desc}, cardLink='pdf-to-book', svgPath='images/book.svg')}"></div>