Tag rename, project refactor, user fix

src/main/java/site/easystartup/web/project/service/TechnologyService.java

@@ -0,0 +1,38 @@
+package site.easystartup.web.project.service;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import site.easystartup.web.project.domain.model.Technology;
+import site.easystartup.web.project.repo.TechnologyRepo;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+
+@Service
+@RequiredArgsConstructor
+public class TechnologyService {
+    private final TechnologyRepo technologyRepo;
+
+    public List<Technology> getAllTags() {
+        return technologyRepo.findAll();
+    }
+    public List<Technology> convertTechnology(List<Technology> technology) {
+        List<Technology> technologies = new ArrayList<>();
+        technology.forEach(tag -> {
+            Optional<Technology> foundTag = technologyRepo.findTechnologyByTechnologyName(tag.getTechnologyName());
+            if (foundTag.isPresent()) {
+                technologies.add(foundTag.get());
+            }
+            else {
+                technologyRepo.save(tag);
+                technologies.add(technologyRepo.findTechnologyByTechnologyName(tag.getTechnologyName()).get());
+            }
+        });
+        return technologies;
+    }
+
+    public Technology getTechnologyByName(String tag) {
+        return technologyRepo.findTechnologyByTechnologyName(tag).orElseThrow(() -> new RuntimeException("Technolohy not found"));
+    }
+}