<template>
  <div class="register-bg">
    <div class="register-card">
      <h1 class="register-title">Integrated Bio Foundry Platform</h1>
      <div class="register-form">
        <h2 class="register-signup">회원 가입</h2>

        <!-- 에러 메시지 -->
        <div v-if="errorMessage" class="error-message">
          {{ errorMessage }}
        </div>

        <!-- 성공 메시지 -->
        <div v-if="successMessage" class="success-message">
          {{ successMessage }}
        </div>

        <label class="register-label" for="userId">아이디</label>
        <input
          id="userId"
          v-model="userId"
          class="register-input"
          type="text"
          placeholder="아이디를 입력하세요"
          :disabled="isLoading"
        />

        <label class="register-label" for="password">비밀번호</label>
        <input
          id="password"
          v-model="password"
          class="register-input"
          type="password"
          placeholder="비밀번호를 입력하세요"
          :disabled="isLoading"
        />

        <label class="register-label" for="confirmPassword"
          >비밀번호 확인</label
        >
        <input
          id="confirmPassword"
          v-model="confirmPassword"
          class="register-input"
          type="password"
          placeholder="비밀번호를 다시 입력하세요"
          :disabled="isLoading"
          @keyup.enter="signUp"
        />

        <button class="register-btn" :disabled="isLoading" @click="signUp">
          <span v-if="isLoading">가입 중...</span>
          <span v-else>회원 가입</span>
        </button>

        <!-- 로그인 페이지로 이동 링크 -->
        <div class="login-link">
          <p>
            이미 계정이 있으신가요?
            <NuxtLink to="/login" class="link-text">로그인하기</NuxtLink>
          </p>
        </div>
      </div>
    </div>
  </div>
</template>

<script setup lang="ts">
import { ref, onMounted } from "vue";
import { useRouter } from "vue-router";
import { useUserStore } from "~/stores/user";

// auth 레이아웃 사용
definePageMeta({
  layout: "auth",
});

const userId = ref("");
const password = ref("");
const confirmPassword = ref("");
const errorMessage = ref("");
const successMessage = ref("");
const isLoading = ref(false);
const router = useRouter();
const userStore = useUserStore();

// 이미 로그인된 경우 홈으로 리다이렉션
onMounted(() => {
  if (userStore.isLoggedIn) {
    router.push("/");
  }
});

async function signUp() {
  // 입력값 검증
  if (!userId.value || !password.value || !confirmPassword.value) {
    errorMessage.value = "모든 필드를 입력해주세요.";
    return;
  }

  if (password.value !== confirmPassword.value) {
    errorMessage.value = "비밀번호가 일치하지 않습니다.";
    return;
  }

  if (password.value.length < 6) {
    errorMessage.value = "비밀번호는 최소 6자 이상이어야 합니다.";
    return;
  }

  isLoading.value = true;
  errorMessage.value = "";
  successMessage.value = "";

  try {
    // API 호출을 위한 데이터 준비
    const registerData = {
      userId: userId.value,
      password: password.value,
    };

    // 실제 API 호출 (여기서는 예시로 구현)
    const response = await $fetch("/service/members", {
      method: "POST",
      body: registerData,
      headers: {
        "Content-Type": "application/json",
      },
    });

    if (response) {
      successMessage.value =
        "회원 가입이 완료되었습니다! 로그인 페이지로 이동합니다.";

      // 2초 후 로그인 페이지로 이동
      setTimeout(() => {
        router.push("/login");
      }, 2000);
    }
  } catch (error: any) {
    if (error.status === 409) {
      errorMessage.value = "이미 존재하는 아이디입니다.";
    } else if (error.status === 400) {
      errorMessage.value = "잘못된 입력값입니다.";
    } else {
      errorMessage.value = "회원 가입 중 오류가 발생했습니다.";
    }
    console.error("회원 가입 오류:", error);
  } finally {
    isLoading.value = false;
  }
}
</script>

<style scoped>
.register-bg {
  width: 100vw;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f8f9fb;
  padding: 0;
}

.register-card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 16px 40px 0 rgba(44, 62, 80, 0.08);
  padding: 40px 36px 32px 36px;
  min-width: 500px;
  max-width: 600px;
  width: 100%;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.register-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: #23272f;
  font-family: "Montserrat", "Pretendard", sans-serif;
}

.register-form {
  width: 100%;
  display: flex;
  flex-direction: column;
}

.register-signup {
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 16px;
  color: #23272f;
}

.register-label {
  font-size: 0.95rem;
  margin-bottom: 4px;
  color: #6b7280;
  margin-top: 12px;
}

.register-input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  background: #f1f5fb;
  margin-bottom: 4px;
  font-size: 1rem;
  outline: none;
  transition: border 0.2s;
}

.register-input:focus {
  border: 1.5px solid #4666e5;
}

.register-input:disabled {
  background: #f3f4f6;
  cursor: not-allowed;
}

.register-btn {
  width: 100%;
  margin-top: 20px;
  padding: 10px 0;
  background: #4666e5;
  color: #fff;
  font-weight: 600;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s;
}

.register-btn:hover:not(:disabled) {
  background: #3451b2;
}

.register-btn:disabled {
  background: #9ca3af;
  cursor: not-allowed;
}

.error-message {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #dc2626;
  padding: 8px 12px;
  border-radius: 6px;
  margin-bottom: 16px;
  font-size: 0.9rem;
}

.success-message {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: #16a34a;
  padding: 8px 12px;
  border-radius: 6px;
  margin-bottom: 16px;
  font-size: 0.9rem;
}

.login-link {
  margin-top: 24px;
  text-align: center;
  padding: 16px;
  background: #f8fafc;
  border-radius: 6px;
  border: 1px solid #e2e8f0;
}

.login-link p {
  margin: 0;
  font-size: 0.9rem;
  color: #64748b;
}

.link-text {
  color: #4666e5;
  text-decoration: none;
  font-weight: 500;
}

.link-text:hover {
  text-decoration: underline;
}

@media (max-width: 600px) {
  .register-card {
    padding: 24px 8px 20px 8px;
    min-width: 0;
    max-width: 98vw;
  }

  .register-title {
    font-size: 1.3rem;
  }
}
</style>
