dify/web/app/components/workflow/nodes/template-transform/default.ts

import type { TFunction } from 'i18next'
import type { NodeDefault } from '../../types'
import type { TemplateTransformNodeType } from './types'
import { BlockClassification } from '@/app/components/workflow/block-selector/types'
import { BlockEnum } from '@/app/components/workflow/types'
import { genNodeMetaData } from '@/app/components/workflow/utils'

const i18nPrefix = 'errorMsg'

const metaData = genNodeMetaData({
  classification: BlockClassification.Transform,
  sort: 2,
  type: BlockEnum.TemplateTransform,
  helpLinkUri: 'template',
})
const nodeDefault: NodeDefault<TemplateTransformNodeType> = {
  metaData,
  defaultValue: {
    template: '',
    variables: [],
  },
  checkValid(payload: TemplateTransformNodeType, t: TFunction<'workflow'>) {
    let errorMessages = ''
    const { template, variables } = payload

    if (!errorMessages && variables.filter((v) => !v.variable).length > 0)
      errorMessages = t(($) => $[`${i18nPrefix}.fieldRequired`], {
        ns: 'workflow',
        field: t(($) => $[`${i18nPrefix}.fields.variable`], { ns: 'workflow' }),
      })
    if (!errorMessages && variables.filter((v) => !v.value_selector.length).length > 0)
      errorMessages = t(($) => $[`${i18nPrefix}.fieldRequired`], {
        ns: 'workflow',
        field: t(($) => $[`${i18nPrefix}.fields.variableValue`], { ns: 'workflow' }),
      })
    if (!errorMessages && !template)
      errorMessages = t(($) => $[`${i18nPrefix}.fieldRequired`], {
        ns: 'workflow',
        field: t(($) => $['nodes.templateTransform.code'], { ns: 'workflow' }),
      })
    return {
      isValid: !errorMessages,
      errorMessage: errorMessages,
    }
  },
}

export default nodeDefault