<template>
  <div class="registration-container">
    <h1>注册</h1>
    <form @submit.prevent="handleRegistration">
      <div class="form-group">
        <label for="username">用户名</label>
        <input type="text" v-model="username" id="username" required />
      </div>
      <div class="form-group">
        <label for="password">密码</label>
        <input type="password" v-model="password" id="password" required />
      </div>
      <div class="form-group">
        <label for="confirmPassword">确认密码</label>
        <input type="password" v-model="confirmPassword" id="confirmPassword" required />
      </div>
      <button type="submit" :disabled="isLoading">{{ isLoading ? '注册中...' : '注册' }}</button>
    </form>
    <p>
      已有账号？
      <a href="#" @click.prevent="$emit('show-login')">点击登录</a>
    </p>
  </div>
</template>

<script>
import { API_BASE_URL } from '../config/api';

export default {
  data() {
    return {
      username: '',
      password: '',
      confirmPassword: '',
      isLoading: false
    };
  },
  methods: {
    async handleRegistration() {
      if (this.password !== this.confirmPassword) {
        alert('密码不匹配，请重试！');
        return;
      }

      if (!this.username || !this.password) {
        alert('用户名和密码不能为空！');
        return;
      }

      this.isLoading = true;
      try {
        const response = await fetch(`${API_BASE_URL}/api/register`, {
          method: 'POST',
          headers: {
            'Content-Type': 'application/json',
          },
          body: JSON.stringify({
            username: this.username,
            password: this.password
          })
        });

        const data = await response.json();
        
        if (data.success) {
          alert('注册成功！即将跳转到登录页面。');
          // 清空表单数据
          this.username = '';
          this.password = '';
          this.confirmPassword = '';
          
          // 延迟跳转到登录页面
          setTimeout(() => {
            this.$emit('show-login');
          }, 100);
        } else {
          alert(data.message || '注册失败');
        }
      } catch (error) {
        console.error('Registration error:', error);
        alert('注册失败，请检查网络连接');
      } finally {
        this.isLoading = false;
      }
    },
  },
};
</script>

<style scoped>
.registration-container {
  max-width: 420px;
  margin: 20px auto;
  padding: 40px 50px;
  border: none;
  border-radius: 12px;
  background-color: #ffffff;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  transition: all 0.3s ease;
}

h1 {
  text-align: center;
  color: #2c3e50;
  font-size: 28px;
  margin-bottom: 25px;
  font-weight: 600;
}

.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: #4a5568;
}

input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background-color: #f8fafc;
  transition: all 0.3s ease;
  font-size: 15px;
}

input:focus {
  outline: none;
  border-color: #007bff;
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.2);
}

button {
  width: 100%;
  padding: 12px;
  background-color: #007bff;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  transition: all 0.3s ease;
  margin-top: 10px;
}

button:hover {
  background-color: #0056b3;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 123, 255, 0.2);
}

button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

p {
  margin-top: 20px;
  color: #666;
  font-size: 14px;
}

a {
  color: #007bff;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

a:hover {
  color: #0056b3;
  text-decoration: underline;
}
</style>