dify/web/app/components/workflow/panel/workflow-preview.tsx

import {
  memo,
  useCallback,
  useEffect,
  // useRef,
  useState,
} from 'react'
import {
  RiClipboardLine,
  RiCloseLine,
} from '@remixicon/react'
import { useTranslation } from 'react-i18next'
import copy from 'copy-to-clipboard'
import { useBoolean } from 'ahooks'
import ResultText from '../run/result-text'
import ResultPanel from '../run/result-panel'
import TracingPanel from '../run/tracing-panel'
import {
  useWorkflowInteractions,
} from '../hooks'
import { useStore } from '../store'
import {
  WorkflowRunningStatus,
} from '../types'
import { SimpleBtn } from '../../app/text-generate/item'
import Toast from '../../base/toast'
import IterationResultPanel from '../run/iteration-result-panel'
import InputsPanel from './inputs-panel'
import cn from '@/utils/classnames'
import Loading from '@/app/components/base/loading'
import type { NodeTracing } from '@/types/workflow'

const WorkflowPreview = () => {
  const { t } = useTranslation()
  const { handleCancelDebugAndPreviewPanel } = useWorkflowInteractions()
  const workflowRunningData = useStore(s => s.workflowRunningData)
  const showInputsPanel = useStore(s => s.showInputsPanel)
  const showDebugAndPreviewPanel = useStore(s => s.showDebugAndPreviewPanel)
  const [currentTab, setCurrentTab] = useState<string>(showInputsPanel ? 'INPUT' : 'TRACING')

  const switchTab = async (tab: string) => {
    setCurrentTab(tab)
  }

  useEffect(() => {
    if (showDebugAndPreviewPanel && showInputsPanel)
      setCurrentTab('INPUT')
  }, [showDebugAndPreviewPanel, showInputsPanel])

  useEffect(() => {
    if ((workflowRunningData?.result.status === WorkflowRunningStatus.Succeeded || workflowRunningData?.result.status === WorkflowRunningStatus.Failed) && !workflowRunningData.resultText)
      switchTab('DETAIL')
  }, [workflowRunningData])

  const [iterationRunResult, setIterationRunResult] = useState<NodeTracing[][]>([])
  const [isShowIterationDetail, {
    setTrue: doShowIterationDetail,
    setFalse: doHideIterationDetail,
  }] = useBoolean(false)

  const handleShowIterationDetail = useCallback((detail: NodeTracing[][]) => {
    setIterationRunResult(detail)
    doShowIterationDetail()
  }, [doShowIterationDetail])

  if (isShowIterationDetail) {
    return (
      <div className={`
      flex flex-col w-[420px] h-full rounded-l-2xl border-[0.5px] border-gray-200 shadow-xl bg-white
    `}>
        <IterationResultPanel
          list={iterationRunResult}
          onHide={doHideIterationDetail}
          onBack={doHideIterationDetail}
        />
      </div>
    )
  }

  return (
    <div className={`
      flex flex-col w-[420px] h-full rounded-l-2xl border-[0.5px] border-gray-200 shadow-xl bg-white
    `}>
      <div className='flex items-center justify-between p-4 pb-1 text-base font-semibold text-gray-900'>
        {`Test Run${!workflowRunningData?.result.sequence_number ? '' : `#${workflowRunningData?.result.sequence_number}`}`}
        <div className='p-1 cursor-pointer' onClick={() => handleCancelDebugAndPreviewPanel()}>
          <RiCloseLine className='w-4 h-4 text-gray-500' />
        </div>
      </div>
      <div className='grow relative flex flex-col'>
        {isShowIterationDetail
          ? (
            <IterationResultPanel
              list={iterationRunResult}
              onHide={doHideIterationDetail}
              onBack={doHideIterationDetail}
            />
          )
          : (
            <>
              <div className='shrink-0 flex items-center px-4 border-b-[0.5px] border-[rgba(0,0,0,0.05)]'>
                {showInputsPanel && (
                  <div
                    className={cn(
                      'mr-6 py-3 border-b-2 border-transparent text-[13px] font-semibold leading-[18px] text-gray-400 cursor-pointer',
                      currentTab === 'INPUT' && '!border-[rgb(21,94,239)] text-gray-700',
                    )}
                    onClick={() => switchTab('INPUT')}
                  >{t('runLog.input')}</div>
                )}
                <div
                  className={cn(
                    'mr-6 py-3 border-b-2 border-transparent text-[13px] font-semibold leading-[18px] text-gray-400 cursor-pointer',
                    currentTab === 'RESULT' && '!border-[rgb(21,94,239)] text-gray-700',
                    !workflowRunningData && 'opacity-30 !cursor-not-allowed',
                  )}
                  onClick={() => {
                    if (!workflowRunningData)
                      return
                    switchTab('RESULT')
                  }}
                >{t('runLog.result')}</div>
                <div
                  className={cn(
                    'mr-6 py-3 border-b-2 border-transparent text-[13px] font-semibold leading-[18px] text-gray-400 cursor-pointer',
                    currentTab === 'DETAIL' && '!border-[rgb(21,94,239)] text-gray-700',
                    !workflowRunningData && 'opacity-30 !cursor-not-allowed',
                  )}
                  onClick={() => {
                    if (!workflowRunningData)
                      return
                    switchTab('DETAIL')
                  }}
                >{t('runLog.detail')}</div>
                <div
                  className={cn(
                    'mr-6 py-3 border-b-2 border-transparent text-[13px] font-semibold leading-[18px] text-gray-400 cursor-pointer',
                    currentTab === 'TRACING' && '!border-[rgb(21,94,239)] text-gray-700',
                    !workflowRunningData && 'opacity-30 !cursor-not-allowed',
                  )}
                  onClick={() => {
                    if (!workflowRunningData)
                      return
                    switchTab('TRACING')
                  }}
                >{t('runLog.tracing')}</div>
              </div>
              <div className={cn(
                'grow bg-components-panel-bg h-0 overflow-y-auto rounded-b-2xl',
                (currentTab === 'RESULT' || currentTab === 'TRACING') && '!bg-background-section-burn',
              )}>
                {currentTab === 'INPUT' && showInputsPanel && (
                  <InputsPanel onRun={() => switchTab('RESULT')} />
                )}
                {currentTab === 'RESULT' && (
                  <>
                    <ResultText
                      isRunning={workflowRunningData?.result?.status === WorkflowRunningStatus.Running || !workflowRunningData?.result}
                      outputs={workflowRunningData?.resultText}
                      allFiles={workflowRunningData?.result?.files as any}
                      error={workflowRunningData?.result?.error}
                      onClick={() => switchTab('DETAIL')}
                    />
                    {(workflowRunningData?.result.status === WorkflowRunningStatus.Succeeded && workflowRunningData?.resultText && typeof workflowRunningData?.resultText === 'string') && (
                      <SimpleBtn
                        className={cn('ml-4 mb-4 inline-flex space-x-1')}
                        onClick={() => {
                          const content = workflowRunningData?.resultText
                          if (typeof content === 'string')
                            copy(content)
                          else
                            copy(JSON.stringify(content))
                          Toast.notify({ type: 'success', message: t('common.actionMsg.copySuccessfully') })
                        }}>
                        <RiClipboardLine className='w-3.5 h-3.5' />
                        <div>{t('common.operation.copy')}</div>
                      </SimpleBtn>
                    )}
                  </>
                )}
                {currentTab === 'DETAIL' && (
                  <ResultPanel
                    inputs={workflowRunningData?.result?.inputs}
                    outputs={workflowRunningData?.result?.outputs}
                    status={workflowRunningData?.result?.status || ''}
                    error={workflowRunningData?.result?.error}
                    elapsed_time={workflowRunningData?.result?.elapsed_time}
                    total_tokens={workflowRunningData?.result?.total_tokens}
                    created_at={workflowRunningData?.result?.created_at}
                    created_by={(workflowRunningData?.result?.created_by as any)?.name}
                    steps={workflowRunningData?.result?.total_steps}
                  />
                )}
                {currentTab === 'DETAIL' && !workflowRunningData?.result && (
                  <div className='flex h-full items-center justify-center bg-components-panel-bg'>
                    <Loading />
                  </div>
                )}
                {currentTab === 'TRACING' && (
                  <TracingPanel
                    className='bg-background-section-burn'
                    list={workflowRunningData?.tracing || []}
                    onShowIterationDetail={handleShowIterationDetail}
                  />
                )}
                {currentTab === 'TRACING' && !workflowRunningData?.tracing?.length && (
                  <div className='flex h-full items-center justify-center !bg-background-section-burn'>
                    <Loading />
                  </div>
                )}

              </div>
            </>
          )}

      </div>
    </div>
  )
}

export default memo(WorkflowPreview)