dify/web/app/components/workflow/constants.ts

import type { Var } from './types'
import { BlockEnum, VarType } from './types'

export const MAX_ITERATION_PARALLEL_NUM = 10
export const MIN_ITERATION_PARALLEL_NUM = 1
export const DEFAULT_ITER_TIMES = 1
export const DEFAULT_LOOP_TIMES = 1
export const NODE_WIDTH = 240
export const X_OFFSET = 60
export const NODE_WIDTH_X_OFFSET = NODE_WIDTH + X_OFFSET
export const Y_OFFSET = 39
export const START_INITIAL_POSITION = { x: 80, y: 282 }
export const AUTO_LAYOUT_OFFSET = {
  x: -42,
  y: 243,
}
export const ITERATION_NODE_Z_INDEX = 1
export const ITERATION_CHILDREN_Z_INDEX = 1002
export const ITERATION_PADDING = {
  top: 65,
  right: 16,
  bottom: 20,
  left: 16,
}

export const LOOP_NODE_Z_INDEX = 1
export const LOOP_CHILDREN_Z_INDEX = 1002
export const LOOP_PADDING = {
  top: 65,
  right: 16,
  bottom: 20,
  left: 16,
}

export const NODE_LAYOUT_HORIZONTAL_PADDING = 60
export const NODE_LAYOUT_VERTICAL_PADDING = 60
export const NODE_LAYOUT_MIN_DISTANCE = 100

export const isInWorkflowPage = () => {
  const pathname = globalThis.location.pathname
  return /^\/app\/[^/]+\/workflow$/.test(pathname) || /^\/workflow\/[^/]+$/.test(pathname)
}
export const getGlobalVars = (isChatMode: boolean): Var[] => {
  const isInWorkflow = isInWorkflowPage()
  const vars: Var[] = [
    ...(isChatMode
      ? [
          {
            variable: 'sys.dialogue_count',
            type: VarType.number,
          },
          {
            variable: 'sys.conversation_id',
            type: VarType.string,
          },
        ]
      : []),
    {
      variable: 'sys.user_id',
      type: VarType.string,
    },
    {
      variable: 'sys.app_id',
      type: VarType.string,
    },
    {
      variable: 'sys.workflow_id',
      type: VarType.string,
    },
    {
      variable: 'sys.workflow_run_id',
      type: VarType.string,
    },
    ...((isInWorkflow && !isChatMode)
      ? [
          {
            variable: 'sys.timestamp',
            type: VarType.number,
          },
        ]
      : []),
  ]
  return vars
}

export const VAR_SHOW_NAME_MAP: Record<string, string> = {
  'sys.query': 'query',
  'sys.files': 'files',
}

export const RETRIEVAL_OUTPUT_STRUCT = `{
  "content": "",
  "title": "",
  "url": "",
  "icon": "",
  "metadata": {
    "dataset_id": "",
    "dataset_name": "",
    "document_id": [],
    "document_name": "",
    "document_data_source_type": "",
    "segment_id": "",
    "segment_position": "",
    "segment_word_count": "",
    "segment_hit_count": "",
    "segment_index_node_hash": "",
    "score": ""
  }
}`

export const SUPPORT_OUTPUT_VARS_NODE = [
  BlockEnum.Start,
  BlockEnum.TriggerWebhook,
  BlockEnum.TriggerPlugin,
  BlockEnum.LLM,
  BlockEnum.KnowledgeRetrieval,
  BlockEnum.Code,
  BlockEnum.TemplateTransform,
  BlockEnum.Command,
  BlockEnum.HttpRequest,
  BlockEnum.Tool,
  BlockEnum.VariableAssigner,
  BlockEnum.VariableAggregator,
  BlockEnum.QuestionClassifier,
  BlockEnum.ParameterExtractor,
  BlockEnum.Iteration,
  BlockEnum.Loop,
  BlockEnum.DocExtractor,
  BlockEnum.ListFilter,
  BlockEnum.Agent,
  BlockEnum.DataSource,
  BlockEnum.HumanInput,
]

export const AGENT_OUTPUT_STRUCT: Var[] = [
  {
    variable: 'context',
    type: VarType.arrayObject,
    schemaType: 'List[promptMessage]',
  },
  {
    variable: 'usage',
    type: VarType.object,
  },
]

export const LLM_OUTPUT_STRUCT: Var[] = [
  {
    variable: 'generation',
    type: VarType.object,
    children: [
      {
        variable: 'content',
        type: VarType.string,
      },
      {
        variable: 'reasoning_content',
        type: VarType.arrayString,
      },
      {
        variable: 'tool_calls',
        type: VarType.arrayObject,
      },
    ],
  },
  {
    variable: 'text',
    type: VarType.string,
  },
  {
    variable: 'context',
    type: VarType.arrayObject,
    schemaType: 'List[promptMessage]',
  },
  {
    variable: 'reasoning_content',
    type: VarType.string,
  },
  {
    variable: 'usage',
    type: VarType.object,
  },
]

export const KNOWLEDGE_RETRIEVAL_OUTPUT_STRUCT: Var[] = [
  {
    variable: 'result',
    type: VarType.arrayObject,
  },
]

export const TEMPLATE_TRANSFORM_OUTPUT_STRUCT: Var[] = [
  {
    variable: 'output',
    type: VarType.string,
  },
]

export const COMMAND_OUTPUT_STRUCT: Var[] = [
  {
    variable: 'stdout',
    type: VarType.string,
  },
  {
    variable: 'stderr',
    type: VarType.string,
  },
  {
    variable: 'exit_code',
    type: VarType.number,
  },
  {
    variable: 'pid',
    type: VarType.string,
  },
]

export const QUESTION_CLASSIFIER_OUTPUT_STRUCT = [
  {
    variable: 'class_name',
    type: VarType.string,
  },
  {
    variable: 'usage',
    type: VarType.object,
  },
]

export const HTTP_REQUEST_OUTPUT_STRUCT: Var[] = [
  {
    variable: 'body',
    type: VarType.string,
  },
  {
    variable: 'status_code',
    type: VarType.number,
  },
  {
    variable: 'headers',
    type: VarType.object,
  },
  {
    variable: 'files',
    type: VarType.arrayFile,
  },
]

export const TOOL_OUTPUT_STRUCT: Var[] = [
  {
    variable: 'text',
    type: VarType.string,
  },
  {
    variable: 'files',
    type: VarType.arrayFile,
  },
  {
    variable: 'json',
    type: VarType.arrayObject,
  },
]

export const HUMAN_INPUT_OUTPUT_STRUCT: Var[] = [
  {
    variable: '__action_id',
    type: VarType.string,
  },
  {
    variable: '__rendered_content',
    type: VarType.string,
  },
]

export const PARAMETER_EXTRACTOR_COMMON_STRUCT: Var[] = [
  {
    variable: '__is_success',
    type: VarType.number,
  },
  {
    variable: '__reason',
    type: VarType.string,
  },
  {
    variable: '__usage',
    type: VarType.object,
  },
]

export const FILE_STRUCT: Var[] = [
  {
    variable: 'name',
    type: VarType.string,
  },
  {
    variable: 'size',
    type: VarType.number,
  },
  {
    variable: 'type',
    type: VarType.string,
  },
  {
    variable: 'extension',
    type: VarType.string,
  },
  {
    variable: 'mime_type',
    type: VarType.string,
  },
  {
    variable: 'transfer_method',
    type: VarType.string,
  },
  {
    variable: 'url',
    type: VarType.string,
  },
  {
    variable: 'related_id',
    type: VarType.string,
  },
]

export const DEFAULT_FILE_UPLOAD_SETTING = {
  allowed_file_upload_methods: ['local_file', 'remote_url'],
  max_length: 5,
  allowed_file_types: ['image'],
  allowed_file_extensions: [],
}

export const WORKFLOW_DATA_UPDATE = 'WORKFLOW_DATA_UPDATE'
export const CUSTOM_NODE = 'custom'
export const CUSTOM_EDGE = 'custom'
export const DSL_EXPORT_CHECK = 'DSL_EXPORT_CHECK'
export const DEFAULT_RETRY_MAX = 3
export const DEFAULT_RETRY_INTERVAL = 100