<template>
  <div class="register-container">
    <!-- 顶部可拖动标题栏 -->
    <div class="drag-region">
      <div class="window-controls">
        <button class="window-btn minimize" @click="handleMinimize" title="最小化">
          <svg viewBox="0 0 12 12"><rect y="5" width="12" height="2" fill="currentColor"/></svg>
        </button>
        <button class="window-btn maximize" @click="handleMaximize" :title="isMaximized ? '还原' : '最大化'">
          <svg v-if="isMaximized" viewBox="0 0 12 12">
            <rect x="1.5" y="3" width="7" height="7" stroke="currentColor" stroke-width="1.5" fill="none"/>
            <path d="M3.5 3V1.5H11V9H9.5" stroke="currentColor" stroke-width="1.5" fill="none"/>
          </svg>
          <svg v-else viewBox="0 0 12 12">
            <rect x="1" y="1" width="10" height="10" stroke="currentColor" stroke-width="1.5" fill="none"/>
          </svg>
        </button>
        <button class="window-btn close" @click="handleClose" title="关闭">
          <svg viewBox="0 0 12 12">
            <path d="M1 1L11 11M1 11L11 1" stroke="currentColor" stroke-width="1.5" stroke-linecap="round"/>
          </svg>
        </button>
      </div>
    </div>
    
    <!-- 背景装饰 -->
    <div class="bg-decoration">
      <div class="circle circle-1"></div>
      <div class="circle circle-2"></div>
      <div class="circle circle-3"></div>
    </div>
    
    <div class="register-card">
      <div class="register-header">
        <div class="logo">
          <el-icon><UserFilled /></el-icon>
        </div>
        <h1>创建账号</h1>
        <p>注册新账号以使用系统</p>
      </div>
      
      <el-form
        ref="formRef"
        :model="form"
        :rules="rules"
        class="register-form"
        @submit.prevent="handleRegister"
      >
        <el-form-item prop="username">
          <el-input
            v-model="form.username"
            placeholder="用户名（3-50个字符）"
            size="large"
            :prefix-icon="User"
          />
        </el-form-item>
        
        <el-form-item prop="email">
          <el-input
            v-model="form.email"
            placeholder="邮箱（可选）"
            size="large"
            :prefix-icon="Message"
          />
        </el-form-item>
        
        <el-form-item prop="password">
          <el-input
            v-model="form.password"
            type="password"
            placeholder="密码（至少6个字符）"
            size="large"
            :prefix-icon="Lock"
            show-password
          />
        </el-form-item>
        
        <el-form-item prop="confirmPassword">
          <el-input
            v-model="form.confirmPassword"
            type="password"
            placeholder="确认密码"
            size="large"
            :prefix-icon="Lock"
            show-password
          />
        </el-form-item>
        
        <el-form-item>
          <el-button
            type="primary"
            size="large"
            :loading="loading"
            class="register-btn"
            native-type="submit"
          >
            注册
          </el-button>
        </el-form-item>
      </el-form>
      
      <div class="register-footer">
        <span>已有账号？</span>
        <el-button type="primary" link @click="$router.push('/login')">
          立即登录
        </el-button>
      </div>
    </div>
  </div>
</template>

<script setup lang="ts">
import { ref, reactive, onMounted } from 'vue';
import { useRouter } from 'vue-router';
import { User, Lock, Message, UserFilled } from '@element-plus/icons-vue';
import { ElMessage, type FormInstance, type FormRules } from 'element-plus';
import { useAuthStore } from '@/stores/auth';

const router = useRouter();
const authStore = useAuthStore();

const formRef = ref<FormInstance>();
const loading = ref(false);
const isMaximized = ref(false);

// 窗口控制
function handleMinimize() {
  window.electronAPI?.minimizeWindow?.();
}

function handleMaximize() {
  window.electronAPI?.maximizeWindow?.();
}

function handleClose() {
  window.electronAPI?.closeWindow?.();
}

// 监听窗口最大化状态
onMounted(async () => {
  if (window.electronAPI?.isMaximized) {
    isMaximized.value = await window.electronAPI.isMaximized();
  }
  window.electronAPI?.onMaximizedChange?.((maximized: boolean) => {
    isMaximized.value = maximized;
  });
});

const form = reactive({
  username: '',
  email: '',
  password: '',
  confirmPassword: '',
});

const validateConfirmPassword = (_rule: any, value: string, callback: Function) => {
  if (value !== form.password) {
    callback(new Error('两次输入的密码不一致'));
  } else {
    callback();
  }
};

const rules: FormRules = {
  username: [
    { required: true, message: '请输入用户名', trigger: 'blur' },
    { min: 3, max: 50, message: '用户名长度为3-50个字符', trigger: 'blur' },
  ],
  email: [
    { type: 'email', message: '请输入有效的邮箱地址', trigger: 'blur' },
  ],
  password: [
    { required: true, message: '请输入密码', trigger: 'blur' },
    { min: 6, message: '密码长度至少6个字符', trigger: 'blur' },
  ],
  confirmPassword: [
    { required: true, message: '请确认密码', trigger: 'blur' },
    { validator: validateConfirmPassword, trigger: 'blur' },
  ],
};

async function handleRegister() {
  if (!formRef.value) return;
  
  const valid = await formRef.value.validate().catch(() => false);
  if (!valid) return;
  
  loading.value = true;
  try {
    await authStore.register({
      username: form.username,
      password: form.password,
      email: form.email || undefined,
    });
    ElMessage.success('注册成功，请登录');
    router.push('/login');
  } catch {
    // 错误已在拦截器中处理
  } finally {
    loading.value = false;
  }
}
</script>

<style lang="scss" scoped>
@use '@/styles/variables.scss' as *;

.register-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #f5f7fa 0%, #e4e8eb 100%);
  position: relative;
  overflow: hidden;
}

// 顶部可拖动区域
.drag-region {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 32px;
  -webkit-app-region: drag;
  z-index: 999;
}

// 窗口控制按钮
.window-controls {
  position: absolute;
  top: 0;
  right: 0;
  display: flex;
  -webkit-app-region: no-drag;
  
  .window-btn {
    width: 46px;
    height: 32px;
    border: none;
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.15s;
    color: $text-secondary;
    
    svg {
      width: 12px;
      height: 12px;
    }
    
    &:hover {
      background: rgba(0, 0, 0, 0.06);
    }
    
    &.close:hover {
      background: #e81123;
      color: #fff;
    }
  }
}

// 背景装饰
.bg-decoration {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  
  .circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.5;
  }
  
  .circle-1 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, rgba(79, 140, 255, 0.2), rgba(79, 140, 255, 0.05));
    top: -100px;
    right: -100px;
  }
  
  .circle-2 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, rgba(250, 112, 154, 0.15), rgba(254, 225, 64, 0.1));
    bottom: -80px;
    left: -80px;
  }
  
  .circle-3 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15), rgba(118, 75, 162, 0.1));
    top: 50%;
    left: 10%;
    transform: translateY(-50%);
  }
}

.register-card {
  width: 420px;
  padding: 48px 40px;
  background: #fff;
  border-radius: $radius-xl;
  box-shadow: $shadow-lg;
  position: relative;
  z-index: 1;
  border: 1px solid rgba(255, 255, 255, 0.8);
}

.register-header {
  text-align: center;
  margin-bottom: 36px;
  
  .logo {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    border-radius: $radius-lg;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(79, 172, 254, 0.3);
    
    .el-icon {
      font-size: 32px;
      color: #fff;
    }
  }
  
  h1 {
    margin: 0 0 12px;
    font-size: 24px;
    font-weight: 700;
    color: $text-primary;
  }
  
  p {
    margin: 0;
    color: $text-secondary;
    font-size: 14px;
  }
}

.register-form {
  :deep(.el-input__wrapper) {
    border-radius: $radius-base;
    box-shadow: 0 0 0 1px $border-light inset;
    transition: all 0.2s;
    
    &:hover {
      box-shadow: 0 0 0 1px $primary-color inset;
    }
    
    &.is-focus {
      box-shadow: 0 0 0 1px $primary-color inset, 0 0 0 3px rgba($primary-color, 0.1);
    }
  }
  
  :deep(.el-input__inner) {
    height: 44px;
    font-size: 15px;
  }
  
  :deep(.el-input__prefix) {
    color: $text-secondary;
  }
  
  .register-btn {
    width: 100%;
    height: 48px;
    font-size: 16px;
    font-weight: 600;
    border-radius: $radius-base;
    background: linear-gradient(135deg, $primary-color 0%, #3a7bd5 100%);
    border: none;
    box-shadow: 0 4px 16px rgba($primary-color, 0.3);
    transition: all 0.3s;
    
    &:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba($primary-color, 0.4);
    }
    
    &:active {
      transform: translateY(0);
    }
  }
}

.register-footer {
  text-align: center;
  color: $text-secondary;
  font-size: 14px;
  margin-top: 8px;
  
  .el-button {
    font-weight: 500;
  }
}
</style>
