import { useQuery } from '@tanstack/react-query'
import { getApprovalDetail } from '../services/approval'
import ApprovalFlow from './ApprovalFlow'
import ApprovalAction from './ApprovalAction'
import styles from './ApprovalDetail.module.css'

interface ApprovalDetailProps {
  id: string
}

export default function ApprovalDetail({ id }: ApprovalDetailProps) {
  const { data, isLoading, error } = useQuery({
    queryKey: ['approval-detail', id],
    queryFn: () => getApprovalDetail(id),
  })

  if (isLoading) {
    return <div className={styles.loading}>加载中...</div>
  }

  if (error) {
    return <div className={styles.error}>加载失败: {error.message}</div>
  }

  const order = data?.data

  if (!order) {
    return <div className={styles.empty}>未找到审批详情</div>
  }

  const getStatusText = (status: string) => {
    const statusMap: Record<string, string> = {
      draft: '草稿',
      pending: '审批中',
      approved: '已通过',
      rejected: '已拒绝',
      cancelled: '已撤销',
    }
    return statusMap[status] || status
  }

  return (
    <div className={styles.detail}>
      {/* 标题 */}
      <div className={styles.header}>
        <h1 className={styles.title}>{order.title}</h1>
        <span className={styles.status}>{getStatusText(order.status)}</span>
      </div>

      {/* 审批流程 */}
      {order.flow && (
        <div className={styles.section}>
          <h2 className={styles.sectionTitle}>审批流程</h2>
          <ApprovalFlow nodes={order.flow.nodes || []} />
        </div>
      )}

      {/* 表单数据 */}
      {order.formData && Object.keys(order.formData).length > 0 && (
        <div className={styles.section}>
          <h2 className={styles.sectionTitle}>申请内容</h2>
          <div className={styles.formData}>
            {Object.entries(order.formData).map(([key, value]) => (
              <div key={key} className={styles.formRow}>
                <span className={styles.formLabel}>{key}:</span>
                <span className={styles.formValue}>{String(value)}</span>
              </div>
            ))}
          </div>
        </div>
      )}

      {/* 审批记录 */}
      {order.timeline && order.timeline.length > 0 && (
        <div className={styles.section}>
          <h2 className={styles.sectionTitle}>审批记录</h2>
          <div className={styles.timeline}>
            {order.timeline.map((record: any) => (
              <div key={record.id} className={styles.timelineItem}>
                <div className={styles.timelineDot} />
                <div className={styles.timelineContent}>
                  <div className={styles.timelineHeader}>
                    <span className={styles.timelineUser}>{record.approver?.name}</span>
                    <span className={styles.timelineAction}>
                      {record.action === 'approve' && '通过'}
                      {record.action === 'reject' && '拒绝'}
                      {record.action === 'submit' && '提交'}
                      {record.action === 'cancel' && '撤销'}
                    </span>
                  </div>
                  {record.comment && (
                    <div className={styles.timelineComment}>{record.comment}</div>
                  )}
                  <div className={styles.timelineTime}>
                    {new Date(record.createdAt).toLocaleString('zh-CN')}
                  </div>
                </div>
              </div>
            ))}
          </div>
        </div>
      )}

      {/* 操作按钮 */}
      <ApprovalAction orderId={order.id} status={order.status} />
    </div>
  )
}