<template>
  <div class="login-container">
    <el-card class="login-card" shadow="always">
      <template #header>
        <div class="card-header">
          <h2>欢迎登录</h2>
          <p class="subtitle">请输入您的账号信息</p>
        </div>
      </template>

      <el-form
        ref="loginFormRef"
        :model="loginForm"
        :rules="rules"
        label-position="top"
        @keyup.enter="handleLogin"
      >
        <el-form-item label="用户名" prop="username">
          <el-input
            v-model="loginForm.username"
            :prefix-icon="User"
            clearable
            placeholder="请输入用户名"
          />
        </el-form-item>

        <el-form-item label="密码" prop="password">
          <el-input
            v-model="loginForm.password"
            :prefix-icon="Lock"
            clearable
            placeholder="请输入密码"
            show-password
            type="password"
          />
        </el-form-item>

        <el-form-item>
          <el-checkbox v-model="loginForm.remember">记住我</el-checkbox>
        </el-form-item>

        <el-form-item class="login-form-button">
          <el-button
            :loading="loading"
            class="login-btn"
            type="primary"
            @click="handleLogin"
          >
            登 录
          </el-button>
        </el-form-item>

      </el-form>

    </el-card>
  </div>
</template>

<script setup>
import {reactive, ref} from 'vue'
import {ElMessage} from 'element-plus'
import {Lock, User} from '@element-plus/icons-vue'
import {useRouter} from 'vue-router'

const router = useRouter()

const loginFormRef = ref(null)
const loading = ref(false)

const loginForm = reactive({
  username: '',
  password: '',
  remember: false,
})

const rules = {
  username: [
    { required: true, message: '请输入用户名', trigger: 'blur' },
  ],
  password: [
    { required: true, message: '请输入密码', trigger: 'blur' },
  ],
}

const handleLogin = async () => {
  if (!loginFormRef.value) return
  try {
    await loginFormRef.value.validate()
    loading.value = true
    await new Promise((r) => setTimeout(r, 800))
    ElMessage.success('登录成功（模拟）')
    router.push('/panel')
  } catch {
    // 校验失败，element-plus 会自动显示红色提示
  } finally {
    loading.value = false
  }
}
</script>

<style scoped>
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
}

.login-card {
  width: 420px;
  border-radius: 12px;
  border: none;
}

.card-header {
  text-align: center;
}

.card-header h2 {
  margin: 0 0 8px;
  color: #303133;
}

.subtitle {
  margin: 0;
  font-size: 14px;
  color: #909399;
}

.login-btn {
  display: block;
  margin: 0 auto;
  text-align: center;
  width: 75%;
}
</style>
