refactor: 회원가입 페이지 API 및 타입 수정

frontend/src/api/user/userAPI.ts

@@ -0,0 +1,6 @@
+import apiClient from "@_api/apiClient";
+import type { UserCreateRequest, UserCreateResponse } from "./userTypes";
+
+export const signup = async (data: UserCreateRequest): Promise<UserCreateResponse> => {
+    return await apiClient.post('/users', data, false);
+};

frontend/src/api/user/userTypes.ts

@@ -0,0 +1,27 @@
+export interface UserCreateRequest {
+  /** not empty */
+  name: string;
+
+  /** not empty, email format */
+  email: string;
+
+  /** length >= 8 */
+  password: string;
+
+  /** not empty, pattern: ^010([0-9]{3,4})([0-9]{4})$ */
+  phone: string;
+
+  /** nullable */
+  regionCode?: string | null;
+}
+
+export interface UserCreateResponse {
+  id: number;
+  name: string;
+}
+
+export interface UserContactRetrieveResponse {
+  id: number;
+  name: string;
+  phone: string;
+}

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

@@ -63,3 +63,9 @@
 .signup-form-v2 .btn-primary:hover {
   background-color: #1B64DA;
 }
+
+.error-text {
+  color: #E53E3E;
+  font-size: 12px;
+  margin-top: 4px;
+}

frontend/src/pages/SignupPage.tsx

@@ -1,42 +1,146 @@
-import React, { useState } from 'react';
+import { signup } from '@_api/user/userAPI';
+import type { UserCreateRequest, UserCreateResponse } from '@_api/user/userTypes';
+import '@_css/signup-page-v2.css';
+import React, { useState, useEffect } from 'react';
 import { useNavigate } from 'react-router-dom';
-import { signup } from '@_api/member/memberAPI';
-import type { SignupRequest } from '@_api/member/memberTypes';
+
+const MIN_PASSWORD_LENGTH = 8;
 
 const SignupPage: React.FC = () => {
   const [email, setEmail] = useState('');
   const [password, setPassword] = useState('');
   const [name, setName] = useState('');
+  const [phone, setPhone] = useState('');
+  const [errors, setErrors] = useState<Record<string, string>>({});
+  const [hasSubmitted, setHasSubmitted] = useState(false);
+
   const navigate = useNavigate();
 
-  const handleSignup = async () => {
-    const request: SignupRequest = { email, password, name };
-    await signup(request)
-      .then((response) => {
+  const validate = () => {
+    const newErrors: Record<string, string> = {};
+
+    if (!name.trim()) {
+      newErrors.name = '이름을 입력해주세요.';
+    }
+    if (!email.trim()) {
+      newErrors.email = '이메일을 입력해주세요.';
+    } else if (!/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(email)) {
+      newErrors.email = '올바른 이메일 형식을 입력해주세요.';
+    }
+    if (password.length < MIN_PASSWORD_LENGTH) {
+      newErrors.password = `비밀번호는 최소 ${MIN_PASSWORD_LENGTH}자리 이상이어야 합니다.`;
+    }
+    if (!phone.trim()) {
+      newErrors.phone = '전화번호를 입력해주세요.';
+    } else if (!/^010([0-9]{3,4})([0-9]{4})$/.test(phone)) {
+      newErrors.phone = '올바른 휴대폰 번호 형식이 아닙니다. (예: 01012345678)';
+    }
+
+    return newErrors;
+  };
+
+  // 제출 이후에는 입력값이 바뀔 때마다 다시 validate 실행
+  useEffect(() => {
+    if (hasSubmitted) {
+      setErrors(validate());
+    }
+  }, [email, password, name, phone, hasSubmitted]);
+
+  const handleSignup = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setHasSubmitted(true);
+
+    const newErrors = validate();
+    setErrors(newErrors);
+
+    if (Object.keys(newErrors).length > 0) return;
+
+    const request: UserCreateRequest = { email, password, name, phone, regionCode: null };
+    try {
+      const response: UserCreateResponse = await signup(request);
       alert(`${response.name}님, 회원가입을 축하드려요. 로그인 후 이용해주세요!`);
-        navigate('/login')
-      })
-      .catch(error => {
+      navigate('/login');
+    } catch (error: any) {
+      const message =
+        error.response?.data?.message ||
+        '회원가입에 실패했어요. 입력 정보를 확인해주세요.';
+      alert(message);
       console.error(error);
-      });
+    }
   };
 
   return (
-    <div className="content-container" style={{ width: '400px' }}>
-      <h2 className="content-container-title">Signup</h2>
+    <div className="signup-container-v2">
+      <h2 className="page-title">회원가입</h2>
+      <form className="signup-form-v2" onSubmit={handleSignup}>
         <div className="form-group">
-        <label>Email address</label>
-        <input type="email" className="form-control" placeholder="Enter email" value={email} onChange={e => setEmail(e.target.value)} />
+          <label className="form-label">이메일</label>
+          <input
+            type="email"
+            className="form-input"
+            placeholder="이메일을 입력하세요"
+            value={email}
+            onChange={e => setEmail(e.target.value)}
+            required
+          />
+          {hasSubmitted && errors.email && (
+            <p className="error-text">{errors.email}</p>
+          )}
         </div>
+
         <div className="form-group">
-        <label>Password</label>
-        <input type="password" className="form-control" placeholder="Enter password" value={password} onChange={e => setPassword(e.target.value)} />
+          <label className="form-label">비밀번호</label>
+          <input
+            type="password"
+            className="form-input"
+            placeholder="비밀번호를 입력하세요"
+            value={password}
+            onChange={e => setPassword(e.target.value)}
+            required
+          />
+          {hasSubmitted && errors.password && (
+            <p className="error-text">{errors.password}</p>
+          )}
         </div>
+
         <div className="form-group">
-        <label>Name</label>
-        <input type="text" className="form-control" placeholder="Enter name" value={name} onChange={e => setName(e.target.value)} />
+          <label className="form-label">이름</label>
+          <input
+            type="text"
+            className="form-input"
+            placeholder="이름을 입력하세요"
+            value={name}
+            onChange={e => setName(e.target.value)}
+            required
+          />
+          {hasSubmitted && errors.name && (
+            <p className="error-text">{errors.name}</p>
+          )}
         </div>
-      <button className="btn btn-custom" onClick={handleSignup}>Register</button>
+
+        <div className="form-group">
+          <label className="form-label">전화번호</label>
+          <input
+            type="text"
+            className="form-input"
+            placeholder="전화번호를 입력하세요('-' 제외)"
+            value={phone}
+            onChange={e => setPhone(e.target.value)}
+            required
+          />
+          {hasSubmitted && errors.phone && (
+            <p className="error-text">{errors.phone}</p>
+          )}
+        </div>
+
+        <button
+          type="submit"
+          className="btn-primary"
+          disabled={hasSubmitted && Object.keys(errors).length > 0}
+        >
+          가입하기
+        </button>
+      </form>
     </div>
   );
 };