Done ticket

src/main/java/net/gepafin/tendermanagement/service/PdfService.java

@@ -0,0 +1,9 @@
+package net.gepafin.tendermanagement.service;
+
+import jakarta.servlet.http.HttpServletRequest;
+
+
+public interface PdfService {
+
+    public byte[] generatePdf(HttpServletRequest request, Long applicationId);
+}

src/main/java/net/gepafin/tendermanagement/service/impl/PdfServiceImpl.java

@@ -0,0 +1,25 @@
+package net.gepafin.tendermanagement.service.impl;
+
+import jakarta.servlet.http.HttpServletRequest;
+import net.gepafin.tendermanagement.dao.PdfDao;
+import net.gepafin.tendermanagement.entities.UserEntity;
+import net.gepafin.tendermanagement.service.PdfService;
+import net.gepafin.tendermanagement.util.Validator;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class PdfServiceImpl implements PdfService {
+
+    @Autowired
+    private PdfDao pdfDao;
+
+    @Autowired
+    private Validator validator;
+
+    @Override
+    public byte[] generatePdf(HttpServletRequest request, Long applicationId) {
+        UserEntity userEntity = validator.validateUser(request);
+        return pdfDao.generatePdf(userEntity,applicationId);
+    }
+}