formattingand autowired constructors (#2557)

# Description
This pull request includes several changes aimed at improving the code
structure and removing redundant code. The most significant changes
involve reordering methods, removing unnecessary annotations, and
refactoring constructors to use dependency injection.
Autowired now comes via constructor (which also doesn't need autowired
annotation as its done by default for configuration)



## Checklist

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have performed a self-review of my own code
- [ ] I have attached images of the change if it is UI based
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] If my code has heavily changed functionality I have updated
relevant docs on [Stirling-PDFs doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
- [ ] My changes generate no new warnings
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

src/main/java/stirling/software/SPDF/controller/api/DatabaseController.java

@@ -8,18 +8,13 @@ import java.nio.file.Path;
 import java.nio.file.StandardCopyOption;
 
 import org.eclipse.jetty.http.HttpStatus;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.core.io.InputStreamResource;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.stereotype.Controller;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
 import org.springframework.web.servlet.mvc.support.RedirectAttributes;
 
@@ -38,7 +33,11 @@ import stirling.software.SPDF.config.security.database.DatabaseBackupHelper;
 @Tag(name = "Database", description = "Database APIs for backup, import, and management")
 public class DatabaseController {
 
-    @Autowired DatabaseBackupHelper databaseBackupHelper;
+    private final DatabaseBackupHelper databaseBackupHelper;
+
+    public DatabaseController(DatabaseBackupHelper databaseBackupHelper) {
+        this.databaseBackupHelper = databaseBackupHelper;
+    }
 
     @Operation(
             summary = "Import a database backup file",
@@ -50,13 +49,11 @@ public class DatabaseController {
                     MultipartFile file,
             RedirectAttributes redirectAttributes)
             throws IOException {
-
         if (file == null || file.isEmpty()) {
             redirectAttributes.addAttribute("error", "fileNullOrEmpty");
             return "redirect:/database";
         }
         log.info("Received file: {}", file.getOriginalFilename());
-
         Path tempTemplatePath = Files.createTempFile("backup_", ".sql");
         try (InputStream in = file.getInputStream()) {
             Files.copy(in, tempTemplatePath, StandardCopyOption.REPLACE_EXISTING);
@@ -82,11 +79,9 @@ public class DatabaseController {
             @Parameter(description = "Name of the file to import", required = true) @PathVariable
                     String fileName)
             throws IOException {
-
         if (fileName == null || fileName.isEmpty()) {
             return "redirect:/database?error=fileNullOrEmpty";
         }
-
         // Check if the file exists in the backup list
         boolean fileExists =
                 databaseBackupHelper.getBackupList().stream()
@@ -96,7 +91,6 @@ public class DatabaseController {
             return "redirect:/database?error=fileNotFound";
         }
         log.info("Received file: {}", fileName);
-
         if (databaseBackupHelper.importDatabaseFromUI(fileName)) {
             log.info("File {} imported to database", fileName);
             return "redirect:/database?infoMessage=importIntoDatabaseSuccessed";
@@ -112,7 +106,6 @@ public class DatabaseController {
     public String deleteFile(
             @Parameter(description = "Name of the file to delete", required = true) @PathVariable
                     String fileName) {
-
         if (fileName == null || fileName.isEmpty()) {
             throw new IllegalArgumentException("File must not be null or empty");
         }