<template>
  <div class="expert-apply-page">
    <div class="page-header">
      <h1 class="page-title">专家申请</h1>
      <p class="page-desc">成为平台认证专家，展示研究成果，分享专业观点</p>
    </div>

    <div class="apply-form-wrap">
      <a-steps :current="currentStep" class="steps-wrap">
        <a-step title="填写信息" />
        <a-step title="上传资料" />
        <a-step title="提交审核" />
      </a-steps>

      <a-form
        :model="formData"
        :rules="rules"
        layout="vertical"
        class="apply-form"
      >
        <!-- 基本信息 -->
        <div v-show="currentStep === 0">
          <h3 class="section-title">基本信息</h3>
          <a-row :gutter="24">
            <a-col :span="12">
              <a-form-item label="姓名" name="name">
                <a-input v-model:value="formData.name" placeholder="请输入您的姓名" />
              </a-form-item>
            </a-col>
            <a-col :span="12">
              <a-form-item label="职称/职务" name="title">
                <a-input v-model:value="formData.title" placeholder="如：教授、研究员" />
              </a-form-item>
            </a-col>
          </a-row>

          <a-row :gutter="24">
            <a-col :span="12">
              <a-form-item label="工作单位" name="organization">
                <a-input v-model:value="formData.organization" placeholder="请输入您的工作单位" />
              </a-form-item>
            </a-col>
            <a-col :span="12">
              <a-form-item label="研究领域" name="researchArea">
                <a-input v-model:value="formData.researchArea" placeholder="请输入您的研究领域" />
              </a-form-item>
            </a-col>
          </a-row>

          <a-row :gutter="24">
            <a-col :span="12">
              <a-form-item label="邮箱" name="email">
                <a-input v-model:value="formData.email" placeholder="请输入邮箱" />
              </a-form-item>
            </a-col>
            <a-col :span="12">
              <a-form-item label="联系电话" name="phone">
                <a-input v-model:value="formData.phone" placeholder="请输入联系电话" />
              </a-form-item>
            </a-col>
          </a-row>

          <a-form-item label="个人简介" name="bio">
            <a-textarea v-model:value="formData.bio" :rows="4" placeholder="请简要介绍您的学术背景和工作经历" />
          </a-form-item>
        </div>

        <!-- 上传资料 -->
        <div v-show="currentStep === 1">
          <h3 class="section-title">资质证明材料</h3>
          <p class="section-desc">请上传相关证明材料，以便我们审核您的专家资质</p>

          <a-form-item label="个人简历">
            <a-upload :before-upload="beforeUpload" :custom-request="handleUpload('resume')">
              <a-button><UploadOutlined /> 上传简历</a-button>
            </a-upload>
            <div class="upload-hint">支持 PDF、Word 格式，不超过 10MB</div>
          </a-form-item>

          <a-form-item label="职称/学历证明">
            <a-upload :before-upload="beforeUpload" :custom-request="handleUpload('certificate')">
              <a-button><UploadOutlined /> 上传证明</a-button>
            </a-upload>
            <div class="upload-hint">支持 JPG、PNG、PDF 格式</div>
          </a-form-item>

          <a-form-item label="研究成果或获奖证明">
            <a-upload multiple :before-upload="beforeUpload" :custom-request="handleUpload('achievements')">
              <a-button><UploadOutlined /> 上传材料</a-button>
            </a-upload>
            <div class="upload-hint">可上传多份材料</div>
          </a-form-item>
        </div>

        <!-- 确认提交 -->
        <div v-show="currentStep === 2" class="confirm-section">
          <a-result
            title="确认提交申请"
            sub-title="请确认您填写的信息和上传的材料准确无误"
          >
            <template #icon>
              <CheckCircleOutlined style="font-size: 80px; color: #52c41a" />
            </template>
            <template #extra>
              <a-button type="primary" size="large" @click="handleSubmit" :loading="submitting">
                确认提交
              </a-button>
            </template>
          </a-result>
        </div>

        <!-- 步骤按钮 -->
        <div class="step-actions">
          <a-button v-if="currentStep > 0" @click="currentStep--">上一步</a-button>
          <a-button v-if="currentStep < 2" type="primary" @click="handleNext">下一步</a-button>
        </div>
      </a-form>
    </div>
  </div>
</template>

<script setup lang="ts">
import { message } from 'ant-design-vue'
import { CheckCircleOutlined, UploadOutlined } from '@ant-design/icons-vue'

useHead({ title: '专家申请 - 决策咨询网' })

const currentStep = ref(0)
const submitting = ref(false)

const formData = reactive({
  name: '',
  title: '',
  organization: '',
  researchArea: '',
  email: '',
  phone: '',
  bio: '',
  resume: '',
  certificate: '',
  achievements: [] as string[],
})

const rules = {
  name: [{ required: true, message: '请输入姓名' }],
  email: [{ required: true, type: 'email', message: '请输入正确的邮箱' }],
}

function beforeUpload(file: File) {
  const isLt10M = file.size / 1024 / 1024 < 10
  if (!isLt10M) {
    message.error('文件大小不能超过 10MB')
    return false
  }
  return true
}

function handleUpload(type: string) {
  return async (option: any) => {
    try {
      const form = new FormData()
      form.append('file', option.file)
      // TODO: 调用上传API
      // const res = await uploadFile(form)
      // if (type === 'resume') formData.resume = res.url
      // if (type === 'certificate') formData.certificate = res.url
      option.onSuccess()
      message.success('上传成功')
    } catch (e) {
      option.onError()
      message.error('上传失败')
    }
  }
}

function handleNext() {
  if (currentStep.value === 0) {
    if (!formData.name || !formData.email) {
      message.warning('请填写必填项')
      return
    }
  }
  currentStep.value++
}

async function handleSubmit() {
  submitting.value = true
  try {
    // TODO: 调用API提交申请
    // await submitExpertApplication(formData)
    message.success('提交成功，请等待审核')
    navigateTo('/expert')
  } catch (e: any) {
    message.error(e?.message || '提交失败')
  } finally {
    submitting.value = false
  }
}
</script>

<style scoped>
.expert-apply-page {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 20px;
}

.page-header {
  text-align: center;
  margin-bottom: 40px;
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  color: #1f2937;
  margin: 0 0 12px;
}

.page-desc {
  font-size: 16px;
  color: #6b7280;
  margin: 0;
}

.apply-form-wrap {
  background: #fff;
  border-radius: 16px;
  padding: 40px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

.steps-wrap {
  margin-bottom: 40px;
}

.section-title {
  font-size: 18px;
  font-weight: 600;
  color: #1f2937;
  margin: 0 0 20px;
}

.section-desc {
  font-size: 14px;
  color: #6b7280;
  margin: -10px 0 20px;
}

.upload-hint {
  font-size: 12px;
  color: #9ca3af;
  margin-top: 8px;
}

.confirm-section {
  padding: 40px 0;
}

.step-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid #f0f0f0;
}
</style>
