dify/web/app/components/workflow/nodes/iteration/default.ts

import { BlockEnum, ErrorHandleMode } from '../../types'
import type { NodeDefault } from '../../types'
import type { IterationNodeType } from './types'
import { genNodeMetaData } from '@/app/components/workflow/utils'
import { BlockClassificationEnum } from '@/app/components/workflow/block-selector/types'
const i18nPrefix = 'workflow'

const metaData = genNodeMetaData({
  classification: BlockClassificationEnum.Logic,
  sort: 2,
  type: BlockEnum.Iteration,
})
const nodeDefault: NodeDefault<IterationNodeType> = {
  metaData,
  defaultValue: {
    start_node_id: '',
    iterator_selector: [],
    output_selector: [],
    _children: [],
    _isShowTips: false,
    is_parallel: false,
    parallel_nums: 10,
    error_handle_mode: ErrorHandleMode.Terminated,
  },
  checkValid(payload: IterationNodeType, t: any) {
    let errorMessages = ''

    if (
      !errorMessages
      && (!payload.iterator_selector || payload.iterator_selector.length === 0)
    ) {
      errorMessages = t(`${i18nPrefix}.errorMsg.fieldRequired`, {
        field: t(`${i18nPrefix}.nodes.iteration.input`),
      })
    }

    if (
      !errorMessages
      && (!payload.output_selector || payload.output_selector.length === 0)
    ) {
      errorMessages = t(`${i18nPrefix}.errorMsg.fieldRequired`, {
        field: t(`${i18nPrefix}.nodes.iteration.output`),
      })
    }

    return {
      isValid: !errorMessages,
      errorMessage: errorMessages,
    }
  },
}

export default nodeDefault