Issue GDSC-PKNU-Official#6 feat: MemberService 생성 및 모든 회원 조회 기능 추가

src/main/java/com/gdscpknu/gdscpknu/service/MemberService.java

@@ -0,0 +1,97 @@
+package com.gdscpknu.gdscpknu.service;
+
+import com.gdscpknu.gdscpknu.domain.Member;
+import com.gdscpknu.gdscpknu.notion.GdscNotion;
+import org.jraf.klibnotion.client.blocking.BlockingNotionClient;
+import org.jraf.klibnotion.model.page.Page;
+import org.jraf.klibnotion.model.pagination.Pagination;
+import org.jraf.klibnotion.model.pagination.ResultPage;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+@Service
+public class MemberService {
+
+    private final GdscNotion gdscNotion;
+    private final BlockingNotionClient client;
+    private List<Member> members;
+    private List<String> nameList;
+    private List<String> emailList;
+    private List<String> roleList;
+    private ResultPage<Page> memberIntroPage;
+
+    @Autowired
+    public MemberService(GdscNotion gdscNotion) {
+        this.gdscNotion = gdscNotion;
+        client = gdscNotion.getClient();
+    }
+
+    public List<Member> getAllMember() {
+        members = new ArrayList<>();
+        nameList = new ArrayList<>();
+        emailList = new ArrayList<>();
+        roleList = new ArrayList<>();
+
+        getMemberIntroPage();
+
+        /**
+         * KlibNotion 라이브러리에서 name, email, role 값을 정규식으로 추출하였음
+         */
+        String resultInString = memberIntroPage.results.toString();
+        extractName(resultInString);
+        extractEmail(resultInString);
+        extractRole(resultInString);
+        addMember();
+
+        return members;
+    }
+
+    private void getMemberIntroPage() {
+        memberIntroPage = client.getDatabases().queryDatabase(
+                gdscNotion.getDATABASE_ID(),
+                null,
+                null,
+                new Pagination()
+        );
+    }
+
+    private void extractName(String resultInString) {
+        Pattern namePattern = Pattern.compile("(?<=\\(plainText=)(.*?)(?=,)");
+        Matcher nameMatcher = namePattern.matcher(resultInString);
+        while (nameMatcher.find()) {
+            nameList.add(nameMatcher.group());
+        }
+    }
+
+    private void extractEmail(String resultInString) {
+        Pattern emailPattern = Pattern.compile("(?<=\\bname=이메일, value=)(.*?)(?=\\))");
+        Matcher emailMatcher = emailPattern.matcher(resultInString);
+        while (emailMatcher.find()) {
+            emailList.add(emailMatcher.group());
+        }
+    }
+
+    private void extractRole(String resultInString) {
+        Pattern rolePattern = Pattern.compile("(?<=\\bname=역할, value=SelectOptionImpl\\(name=)(.*?)(?=,)");
+        Matcher roleMatcher = rolePattern.matcher(resultInString);
+        while (roleMatcher.find()) {
+            roleList.add(roleMatcher.group());
+        }
+    }
+
+    private void addMember() {
+        for (int i = 0; i < nameList.size(); i++) {
+            Member member = Member.builder()
+                    .name(nameList.get(i))
+                    .email(emailList.get(i))
+                    .role(roleList.get(i))
+                    .build();
+            members.add(member);
+        }
+    }
+}