feat: 회원가입 페이지에 지역 선택 추가

frontend/src/api/region/regionAPI.ts

@@ -0,0 +1,18 @@
+import apiClient from "@_api/apiClient";
+import type { DongListResponse, RegionCodeResponse, SidoListResponse, SigunguListResponse } from "./regionTypes";
+
+export const fetchSidoList = async (): Promise<SidoListResponse> => {
+    return await apiClient.get(`/regions/sido`);
+};
+
+export const fetchSigunguList = async (sidoCode: string): Promise<SigunguListResponse> => {
+    return await apiClient.get(`/regions/sigungu?sidoCode=${sidoCode}`);
+}
+
+export const fetchDongList = async (sidoCode: string, sigunguCode: string): Promise<DongListResponse> => {
+    return await apiClient.get(`/regions/dong?sidoCode=${sidoCode}&sigunguCode=${sigunguCode}`);
+}
+
+export const fetchRegionCode = async (sidoCode: string, sigunguCode: string, dongCode: string): Promise<RegionCodeResponse> => {
+    return await apiClient.get(`/regions/code?sidoCode=${sidoCode}&sigunguCode=${sigunguCode}&dongCode=${dongCode}`);
+}

frontend/src/api/region/regionTypes.ts

@@ -0,0 +1,30 @@
+export interface SidoResponse {
+    code: string,
+    name: string,
+}
+
+export interface SidoListResponse {
+    sidoList: SidoResponse[]
+}
+
+export interface SigunguResponse {
+    code: string,
+    name: string,
+}
+
+export interface SigunguListResponse {
+    sigunguList: SigunguResponse[]
+}
+
+export interface DongResponse {
+    code: string,
+    name: string,
+}
+
+export interface DongListResponse {
+    dongList: DongResponse[]
+}
+
+export interface RegionCodeResponse {
+    code: string
+}

frontend/src/css/signup-page-v2.css

@@ -68,4 +68,13 @@
   color: #E53E3E;
   font-size: 12px;
   margin-top: 4px;
-}
+}
+
+.region-select-group {
+  display: flex;
+  gap: 10px;
+}
+
+.region-select-group select {
+  flex: 1;
+}

frontend/src/pages/SignupPage.tsx

@@ -1,8 +1,19 @@
-import {signup} from '@_api/user/userAPI';
-import type {UserCreateRequest, UserCreateResponse} from '@_api/user/userTypes';
+import {
+  fetchDongList,
+  fetchRegionCode,
+  fetchSidoList,
+  fetchSigunguList,
+} from '@_api/region/regionAPI';
+import type {
+  DongResponse,
+  SidoResponse,
+  SigunguResponse,
+} from '@_api/region/regionTypes';
+import { signup } from '@_api/user/userAPI';
+import type { UserCreateRequest, UserCreateResponse } from '@_api/user/userTypes';
 import '@_css/signup-page-v2.css';
-import React, {useEffect, useState} from 'react';
-import {useNavigate} from 'react-router-dom';
+import React, { useEffect, useState } from 'react';
+import { useNavigate } from 'react-router-dom';
 
 const MIN_PASSWORD_LENGTH = 8;
 
@@ -14,8 +25,67 @@ const SignupPage: React.FC = () => {
   const [errors, setErrors] = useState<Record<string, string>>({});
   const [hasSubmitted, setHasSubmitted] = useState(false);
 
+  const [sidoList, setSidoList] = useState<SidoResponse[]>([]);
+  const [sigunguList, setSigunguList] = useState<SigunguResponse[]>([]);
+  const [dongList, setDongList] = useState<DongResponse[]>([]);
+  const [selectedSidoCode, setSelectedSidoCode] = useState('');
+  const [selectedSigunguCode, setSelectedSigunguCode] = useState('');
+  const [selectedDongCode, setSelectedDongCode] = useState('');
+
   const navigate = useNavigate();
 
+  useEffect(() => {
+    const fetchSido = async () => {
+      try {
+        const response = await fetchSidoList();
+        setSidoList(response.sidoList);
+      } catch (error) {
+        console.error('시/도 목록을 불러오는 데 실패했습니다.', error);
+      }
+    };
+    fetchSido();
+  }, []);
+
+  useEffect(() => {
+    if (selectedSidoCode) {
+      const fetchSigungu = async () => {
+        try {
+          const response = await fetchSigunguList(selectedSidoCode);
+          setSigunguList(response.sigunguList);
+          setDongList([]);
+          setSelectedSigunguCode('');
+          setSelectedDongCode('');
+        } catch (error) {
+          console.error('시/군/구 목록을 불러오는 데 실패했습니다.', error);
+        }
+      };
+      fetchSigungu();
+    } else {
+      setSigunguList([]);
+      setDongList([]);
+      setSelectedSigunguCode('');
+      setSelectedDongCode('');
+    }
+  }, [selectedSidoCode]);
+
+  useEffect(() => {
+    if (selectedSidoCode && selectedSigunguCode) {
+      const fetchDong = async () => {
+        try {
+          const response = await fetchDongList(selectedSidoCode, selectedSigunguCode);
+          setDongList(response.dongList);
+          setSelectedDongCode('');
+        } catch (error) {
+          console.error('읍/면/동 목록을 불러오는 데 실패했습니다.', error);
+        }
+      };
+      fetchDong();
+    } else {
+      setDongList([]);
+      setSelectedDongCode('');
+    }
+  }, [selectedSigunguCode]);
+
   const validate = () => {
     const newErrors: Record<string, string> = {};
 
@@ -36,6 +106,12 @@ const SignupPage: React.FC = () => {
       newErrors.phone = '올바른 휴대폰 번호 형식이 아닙니다. (예: 01012345678)';
     }
 
+    if (selectedSidoCode || selectedSigunguCode || selectedDongCode) {
+      if (!selectedSidoCode || !selectedSigunguCode || !selectedDongCode) {
+        newErrors.region = '모든 지역 정보를 선택해주세요.';
+      }
+    }
+
     return newErrors;
   };
 
@@ -44,7 +120,7 @@ const SignupPage: React.FC = () => {
     if (hasSubmitted) {
       setErrors(validate());
     }
-  }, [email, password, name, phone, hasSubmitted]);
+  }, [email, password, name, phone, hasSubmitted, selectedSidoCode, selectedSigunguCode, selectedDongCode]);
 
   const handleSignup = async (e: React.FormEvent) => {
     e.preventDefault();
@@ -55,7 +131,23 @@ const SignupPage: React.FC = () => {
 
     if (Object.keys(newErrors).length > 0) return;
 
-    const request: UserCreateRequest = { email, password, name, phone, regionCode: null };
+    let regionCode: string | null = null;
+    if (selectedSidoCode && selectedSigunguCode && selectedDongCode) {
+      try {
+        const response = await fetchRegionCode(
+          selectedSidoCode,
+          selectedSigunguCode,
+          selectedDongCode
+        );
+        regionCode = response.code;
+      } catch (error) {
+        alert('지역 코드를 가져오는 데 실패했습니다.');
+        console.error(error);
+        return;
+      }
+    }
+
+    const request: UserCreateRequest = { email, password, name, phone, regionCode };
     try {
       const response: UserCreateResponse = await signup(request);
       alert(`${response.name}님, 회원가입을 축하드려요. 로그인 후 이용해주세요!`);
@@ -133,6 +225,53 @@ const SignupPage: React.FC = () => {
           )}
         </div>
 
+        <div className="form-group">
+          <label className="form-label">지역 (선택)</label>
+          <div className="region-select-group">
+            <select
+              className="form-input"
+              value={selectedSidoCode}
+              onChange={e => setSelectedSidoCode(e.target.value)}
+            >
+              <option value="">시/도</option>
+              {sidoList.map(s => (
+                <option key={s.code} value={s.code}>
+                  {s.name}
+                </option>
+              ))}
+            </select>
+            <select
+              className="form-input"
+              value={selectedSigunguCode}
+              onChange={e => setSelectedSigunguCode(e.target.value)}
+              disabled={!selectedSidoCode}
+            >
+              <option value="">시/군/구</option>
+              {sigunguList.map(s => (
+                <option key={s.code} value={s.code}>
+                  {s.name}
+                </option>
+              ))}
+            </select>
+            <select
+              className="form-input"
+              value={selectedDongCode}
+              onChange={e => setSelectedDongCode(e.target.value)}
+              disabled={!selectedSigunguCode}
+            >
+              <option value="">읍/면/동</option>
+              {dongList.map(d => (
+                <option key={d.code} value={d.code}>
+                  {d.name}
+                </option>
+              ))}
+            </select>
+          </div>
+          {hasSubmitted && errors.region && (
+            <p className="error-text">{errors.region}</p>
+          )}
+        </div>
+
         <button
           type="submit"
           className="btn-primary"