'use client'

import { useState } from 'react'

import {
  DINGTALK_APPROVAL_NO_MAX_LENGTH,
  getDingtalkApprovalNoError,
} from '@/lib/dingtalk-approval-no'
import {
  fieldControlClass,
  fieldErrorClass,
  fieldLabelClass,
} from '@/components/upload/upload-field-styles'

interface TaskReferenceFieldsProps {
  idPrefix: string
  taskNo: string
  onTaskNoChange: (value: string) => void
  dingtalkApprovalNo: string
  onDingtalkApprovalNoChange: (value: string) => void
  taskNoRequired?: boolean
  disabled?: boolean
}

function getTaskNoError(value: string): string | null {
  const normalized = value.trim().toUpperCase()
  if (!normalized) {
    return null
  }

  return /^TASK\d{12,18}(-\d{2})*$/.test(normalized)
    ? null
    : '任务号格式错误'
}

export default function TaskReferenceFields({
  idPrefix,
  taskNo,
  onTaskNoChange,
  dingtalkApprovalNo,
  onDingtalkApprovalNoChange,
  taskNoRequired = false,
  disabled = false,
}: TaskReferenceFieldsProps) {
  const [taskNoTouched, setTaskNoTouched] = useState(false)
  const [approvalNoTouched, setApprovalNoTouched] = useState(false)
  const taskNoId = `${idPrefix}-task-no`
  const taskNoErrorId = `${taskNoId}-error`
  const approvalNoId = `${idPrefix}-dingtalk-approval-no`
  const approvalNoErrorId = `${approvalNoId}-error`
  const taskNoError = getTaskNoError(taskNo)
  const approvalNoError = getDingtalkApprovalNoError(dingtalkApprovalNo)
  const visibleTaskNoError = taskNoTouched ? taskNoError : null
  const visibleApprovalNoError = approvalNoTouched ? approvalNoError : null

  return (
    <div className="grid grid-cols-1 gap-4 md:grid-cols-2">
      <div className="min-w-0">
        <label htmlFor={taskNoId} className={fieldLabelClass}>
          任务号{taskNoRequired ? ' *' : ''}
        </label>
        <input
          id={taskNoId}
          type="text"
          value={taskNo}
          onChange={(event) => onTaskNoChange(event.target.value.toUpperCase())}
          onBlur={() => setTaskNoTouched(true)}
          placeholder="例如：TASK202601030184"
          className={fieldControlClass}
          disabled={disabled}
          required={taskNoRequired}
          aria-invalid={Boolean(visibleTaskNoError)}
          aria-describedby={visibleTaskNoError ? taskNoErrorId : undefined}
        />
        {visibleTaskNoError && (
          <p id={taskNoErrorId} className={fieldErrorClass}>
            {visibleTaskNoError}
          </p>
        )}
      </div>

      <div className="min-w-0">
        <label htmlFor={approvalNoId} className={fieldLabelClass}>
          钉钉审批编号
        </label>
        <input
          id={approvalNoId}
          type="text"
          inputMode="numeric"
          autoComplete="off"
          maxLength={DINGTALK_APPROVAL_NO_MAX_LENGTH}
          value={dingtalkApprovalNo}
          onChange={(event) => onDingtalkApprovalNoChange(event.target.value)}
          onBlur={() => setApprovalNoTouched(true)}
          placeholder="例如：202508211445000157693"
          className={fieldControlClass}
          disabled={disabled}
          aria-invalid={Boolean(visibleApprovalNoError)}
          aria-describedby={visibleApprovalNoError ? approvalNoErrorId : undefined}
        />
        {visibleApprovalNoError && (
          <p id={approvalNoErrorId} className={fieldErrorClass}>
            {visibleApprovalNoError}
          </p>
        )}
      </div>
    </div>
  )
}