'use client'
import React from 'react'
import { useTranslation } from 'react-i18next'
import { v4 as uuid } from 'uuid'
import { RiAddLine, RiDeleteBinLine } from '@remixicon/react'
import Input from '@/app/components/base/input'
import Button from '@/app/components/base/button'
import ActionButton from '@/app/components/base/action-button'
import { cn } from '@/utils/classnames'

export type HeaderItem = {
  id: string
  key: string
  value: string
}

type Props = {
  headersItems: HeaderItem[]
  onChange: (headerItems: HeaderItem[]) => void
  readonly?: boolean
  isMasked?: boolean
}

const HeadersInput = ({
  headersItems,
  onChange,
  readonly = false,
  isMasked = false,
}: Props) => {
  const { t } = useTranslation()

  const handleItemChange = (index: number, field: 'key' | 'value', value: string) => {
    const newItems = [...headersItems]
    newItems[index] = { ...newItems[index], [field]: value }

    onChange(newItems)
  }

  const handleRemoveItem = (index: number) => {
    const newItems = headersItems.filter((_, i) => i !== index)

    onChange(newItems)
  }

  const handleAddItem = () => {
    const newItems = [...headersItems, { id: uuid(), key: '', value: '' }]

    onChange(newItems)
  }

  if (headersItems.length === 0) {
    return (
      <div className='space-y-2'>
        <div className='body-xs-regular text-text-tertiary'>
          {t('tools.mcp.modal.noHeaders')}
        </div>
        {!readonly && (
          <Button
            variant='secondary'
            size='small'
            onClick={handleAddItem}
            className='w-full'
          >
            <RiAddLine className='mr-1 h-4 w-4' />
            {t('tools.mcp.modal.addHeader')}
          </Button>
        )}
      </div>
    )
  }

  return (
    <div className='space-y-2'>
      {isMasked && (
        <div className='body-xs-regular text-text-tertiary'>
          {t('tools.mcp.modal.maskedHeadersTip')}
        </div>
      )}
      <div className='overflow-hidden rounded-lg border border-divider-regular'>
        <div className='system-xs-medium-uppercase bg-background-secondary flex h-7 items-center leading-7 text-text-tertiary'>
          <div className='h-full w-1/2 border-r border-divider-regular pl-3'>{t('tools.mcp.modal.headerKey')}</div>
          <div className='h-full w-1/2 pl-3 pr-1'>{t('tools.mcp.modal.headerValue')}</div>
        </div>
        {headersItems.map((item, index) => (
          <div key={item.id} className={cn(
            'flex items-center border-divider-regular',
            index < headersItems.length - 1 && 'border-b',
          )}>
            <div className='w-1/2 border-r border-divider-regular'>
              <Input
                value={item.key}
                onChange={e => handleItemChange(index, 'key', e.target.value)}
                placeholder={t('tools.mcp.modal.headerKeyPlaceholder')}
                className='rounded-none border-0'
                readOnly={readonly}
              />
            </div>
            <div className='flex w-1/2 items-center'>
              <Input
                value={item.value}
                onChange={e => handleItemChange(index, 'value', e.target.value)}
                placeholder={t('tools.mcp.modal.headerValuePlaceholder')}
                className='flex-1 rounded-none border-0'
                readOnly={readonly}
              />
              {!readonly && !!headersItems.length && (
                <ActionButton
                  onClick={() => handleRemoveItem(index)}
                  className='mr-2'
                >
                  <RiDeleteBinLine className='h-4 w-4 text-text-destructive' />
                </ActionButton>
              )}
            </div>
          </div>
        ))}
      </div>
      {!readonly && (
        <Button
          variant='secondary'
          size='small'
          onClick={handleAddItem}
          className='w-full'
        >
          <RiAddLine className='mr-1 h-4 w-4' />
          {t('tools.mcp.modal.addHeader')}
        </Button>
      )}
    </div>
  )
}

export default React.memo(HeadersInput)
