Added ServiceArea service

src/main/java/com/sarapis/orservice/controller/ServiceAreaController.java

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+package com.sarapis.orservice.controller;
+
+import com.sarapis.orservice.dto.ServiceAreaDTO;
+import com.sarapis.orservice.service.ServiceAreaService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+import java.util.UUID;
+
+@RestController
+@RequestMapping("/api/service_areas")
+public class ServiceAreaController {
+
+    private final ServiceAreaService serviceAreaService;
+
+    @Autowired
+    public ServiceAreaController(ServiceAreaService serviceAreaService) { //stack overflow the dependency injection paste error and then @autowire
+        this.serviceAreaService = serviceAreaService;
+    }
+
+    @GetMapping
+    public ResponseEntity<List<ServiceAreaDTO>> getAllServiceAreas() {
+        List<ServiceAreaDTO> serviceAreaDTOs = this.serviceAreaService.getAllServiceAreas();
+        return ResponseEntity.ok(serviceAreaDTOs);
+    }
+
+    @GetMapping("/{id}")
+    public ResponseEntity<ServiceAreaDTO> getServiceAreaById(@PathVariable String id) {
+        ServiceAreaDTO serviceArea = this.serviceAreaService.getServiceAreaById(id);
+        return ResponseEntity.ok(serviceArea);
+    }
+
+    @PostMapping
+    public ResponseEntity<ServiceAreaDTO> createServiceArea(@RequestBody ServiceAreaDTO serviceAreaDTO) {
+        if (serviceAreaDTO.getId() == null) {
+            serviceAreaDTO.setId(UUID.randomUUID().toString());
+        }
+        ServiceAreaDTO createdServiceArea = this.serviceAreaService.createServiceArea(serviceAreaDTO);
+        return ResponseEntity.ok(createdServiceArea);
+    }
+
+    @PutMapping("/{id}")
+    public ResponseEntity<ServiceAreaDTO> updateServiceArea(@PathVariable String id, @RequestBody ServiceAreaDTO serviceAreaDTO) {
+        ServiceAreaDTO updatedAccessibility = this.serviceAreaService.updateServiceArea(id, serviceAreaDTO);
+        return ResponseEntity.ok(updatedAccessibility);
+    }
+
+    @DeleteMapping("/{id}")
+    public ResponseEntity<Void> deleteServiceArea(@PathVariable String id) {
+        this.serviceAreaService.deleteServiceArea(id);
+        return ResponseEntity.noContent().build();
+    }
+
+}

src/main/java/com/sarapis/orservice/repository/ServiceAreaRepository.java

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+package com.sarapis.orservice.repository;
+
+import com.sarapis.orservice.entity.ServiceArea;
+import com.sarapis.orservice.entity.Attribute;
+import com.sarapis.orservice.entity.Metadata;
+import jakarta.transaction.Transactional;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface ServiceAreaRepository extends JpaRepository<ServiceArea, String> {
+    @Query("SELECT new Attribute(id, linkId, linkType, linkEntity, value, taxonomyTerm, label) FROM Attribute WHERE linkId = ?1")
+    List<Attribute> getAttributes(String organizationId);
+
+    @Query("SELECT new Metadata(id, resourceId, resourceType, lastActionDate, lastActionType, fieldName, previousValue, replacementValue, updatedBy) FROM Metadata WHERE resourceId = ?1")
+    List<Metadata> getMetadata(String organizationId);
+
+    @Modifying
+    @Transactional
+    @Query("DELETE FROM Attribute WHERE linkId = ?1")
+    void deleteAttributes(String organizationId);
+
+    @Modifying
+    @Transactional
+    @Query("DELETE FROM Metadata WHERE resourceId = ?1")
+    void deleteMetadata(String organizationId);
+}

src/main/java/com/sarapis/orservice/service/ServiceAreaService.java

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+package com.sarapis.orservice.service;
+
+import com.sarapis.orservice.dto.ServiceAreaDTO;
+import com.sarapis.orservice.dto.ServiceDTO;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+public interface ServiceAreaService {
+
+    List<ServiceAreaDTO> getAllServiceAreas();
+
+    ServiceAreaDTO getServiceAreaById(String id);
+
+    ServiceAreaDTO createServiceArea(ServiceAreaDTO serviceAreaDTO);
+
+    ServiceAreaDTO updateServiceArea(String id, ServiceAreaDTO serviceAreaDTO);
+
+    void deleteServiceArea(String id);
+}

src/main/java/com/sarapis/orservice/service/ServiceAreaServiceImpl.java

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+package com.sarapis.orservice.service;
+
+import com.sarapis.orservice.dto.AttributeDTO;
+import com.sarapis.orservice.dto.MetadataDTO;
+import com.sarapis.orservice.dto.ServiceAreaDTO;
+import com.sarapis.orservice.entity.Attribute;
+import com.sarapis.orservice.entity.Metadata;
+import com.sarapis.orservice.entity.ServiceArea;
+import com.sarapis.orservice.repository.AttributeRepository;
+import com.sarapis.orservice.repository.MetadataRepository;
+import com.sarapis.orservice.repository.ServiceAreaRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class ServiceAreaServiceImpl implements ServiceAreaService{
+    private final ServiceAreaRepository serviceAreaRepository;
+    private final AttributeRepository attributeRepository;
+    private final MetadataRepository metadataRepository;
+
+    @Autowired
+    public ServiceAreaServiceImpl(ServiceAreaRepository serviceAreaRepository,
+                                  AttributeRepository attributeRepository,
+                                  MetadataRepository metadataRepository) {
+        this.serviceAreaRepository = serviceAreaRepository;
+        this.attributeRepository = attributeRepository;
+        this.metadataRepository = metadataRepository;
+    }
+
+    @Override
+    public List<ServiceAreaDTO> getAllServiceAreas() {
+        List<ServiceAreaDTO> serviceAreaDTOs = this.serviceAreaRepository.findAll().stream().map(ServiceArea::toDTO).toList();
+        serviceAreaDTOs.forEach(this::addRelatedData);
+        return serviceAreaDTOs;
+    }
+
+    @Override
+    public ServiceAreaDTO getServiceAreaById(String id) {
+        ServiceArea serviceArea = this.serviceAreaRepository.findById(id)
+                .orElseThrow(() -> new RuntimeException("Service Area not found."));
+        ServiceAreaDTO serviceAreaDTO = serviceArea.toDTO();
+        this.addRelatedData(serviceAreaDTO);
+        return serviceAreaDTO;
+    }
+
+    @Override
+    public ServiceAreaDTO createServiceArea(ServiceAreaDTO serviceAreaDTO) {
+        ServiceArea serviceArea = this.serviceAreaRepository.save(serviceAreaDTO.toEntity());
+
+        for(AttributeDTO attributeDTO: serviceAreaDTO.getAttributes()) {
+            this.attributeRepository.save(attributeDTO.toEntity(serviceArea.getId()));
+        }
+
+        for (MetadataDTO metadataDTO : serviceAreaDTO.getMetadata()) {
+            this.metadataRepository.save(metadataDTO.toEntity(serviceArea.getId()));
+        }
+
+        ServiceAreaDTO savedServiceAreaDTO = this.serviceAreaRepository.save(serviceArea).toDTO();
+        this.addRelatedData(serviceAreaDTO);
+        return savedServiceAreaDTO;
+    }
+
+    @Override
+    public ServiceAreaDTO updateServiceArea(String id, ServiceAreaDTO serviceAreaDTO) {
+        ServiceArea oldServiceArea = this.serviceAreaRepository.findById(id)
+                .orElseThrow(() -> new RuntimeException("ServiceArea not found"));
+        oldServiceArea.setId(serviceAreaDTO.getId());
+        oldServiceArea.setName(serviceAreaDTO.getName());
+        oldServiceArea.setDescription(serviceAreaDTO.getDescription());
+        oldServiceArea.setExtent(serviceAreaDTO.getExtent());
+        oldServiceArea.setExtentType(serviceAreaDTO.getExtentType());
+        oldServiceArea.setUri(serviceAreaDTO.getUri());
+
+        ServiceArea updatedServiceArea = this.serviceAreaRepository.save(oldServiceArea);
+        return updatedServiceArea.toDTO();
+    }
+
+    @Override
+    public void deleteServiceArea(String id) {
+        ServiceArea serviceArea = this.serviceAreaRepository.findById(id)
+                .orElseThrow(() -> new RuntimeException("ServiceArea not found"));
+        this.serviceAreaRepository.deleteAttributes(serviceArea.getId());
+        this.serviceAreaRepository.deleteMetadata(serviceArea.getId());
+        this.serviceAreaRepository.delete(serviceArea);
+    }
+
+    private void addRelatedData(ServiceAreaDTO serviceAreaDTO) {
+        serviceAreaDTO.getAttributes().addAll(this.serviceAreaRepository.getAttributes(serviceAreaDTO.getId()).stream().map(Attribute::toDTO).toList());
+        serviceAreaDTO.getMetadata().addAll(this.serviceAreaRepository.getMetadata(serviceAreaDTO.getId()).stream().map(Metadata::toDTO).toList());
+    }
+}