import { cn } from '@langgenius/dify-ui/cn'
import {
  ContextMenu,
  ContextMenuContent,
  ContextMenuGroup,
  ContextMenuItem,
  ContextMenuSeparator,
} from '@langgenius/dify-ui/context-menu'
import {
  memo,
  useCallback,
  useMemo,
} from 'react'
import { useTranslation } from 'react-i18next'
import {
  useDSL,
  useIsChatMode,
  useNodesInteractions,
  usePanelInteractions,
  useWorkflowMoveMode,
  useWorkflowStartRun,
} from './hooks'
import AddBlock from './operator/add-block'
import { useOperator } from './operator/hooks'
import { ShortcutKbd } from './shortcuts/shortcut-kbd'
import { useStore } from './store'

const PanelContextmenu = () => {
  const { t } = useTranslation()
  const panelMenu = useStore(s => s.panelMenu)
  const clipboardElements = useStore(s => s.clipboardElements)
  const setShowImportDSLModal = useStore(s => s.setShowImportDSLModal)
  const pendingComment = useStore(s => s.pendingComment)
  const setCommentPlacing = useStore(s => s.setCommentPlacing)
  const setCommentQuickAdd = useStore(s => s.setCommentQuickAdd)
  const { handleNodesPaste } = useNodesInteractions()
  const { handlePaneContextmenuCancel } = usePanelInteractions()
  const {
    handleStartWorkflowRun,
    handleWorkflowStartRunInChatflow,
  } = useWorkflowStartRun()
  const { handleAddNote } = useOperator()
  const { isCommentModeAvailable } = useWorkflowMoveMode()
  const { exportCheck } = useDSL()
  const isChatMode = useIsChatMode()
  const panelMenuClientX = panelMenu?.clientX
  const panelMenuClientY = panelMenu?.clientY

  const anchor = useMemo(() => {
    if (panelMenuClientX === undefined || panelMenuClientY === undefined)
      return null

    return {
      getBoundingClientRect: () => DOMRect.fromRect({
        width: 0,
        height: 0,
        x: panelMenuClientX,
        y: panelMenuClientY,
      }),
    }
  }, [panelMenuClientX, panelMenuClientY])

  const renderAddBlockTrigger = useCallback(() => {
    return (
      <button
        type="button"
        className={cn(
          'mx-1 flex h-8 w-[calc(100%-8px)] items-center rounded-lg outline-hidden hover:bg-state-base-hover focus-visible:ring-1 focus-visible:ring-components-input-border-hover',
          'justify-between gap-4 px-3 text-text-secondary',
        )}
      >
        {t('common.addBlock', { ns: 'workflow' })}
      </button>
    )
  }, [t])

  const handleRunAction = useCallback(() => {
    if (isChatMode)
      handleWorkflowStartRunInChatflow()
    else
      handleStartWorkflowRun()

    handlePaneContextmenuCancel()
  }, [isChatMode, handleWorkflowStartRunInChatflow, handleStartWorkflowRun, handlePaneContextmenuCancel])

  if (!panelMenu || !anchor)
    return null

  return (
    <ContextMenu
      open
      onOpenChange={open => !open && handlePaneContextmenuCancel()}
    >
      <ContextMenuContent
        positionerProps={{ anchor }}
        popupClassName="w-[200px] rounded-lg"
      >
        <ContextMenuGroup>
          <AddBlock
            renderTrigger={renderAddBlockTrigger}
            offset={{
              mainAxis: -36,
              crossAxis: -4,
            }}
          />
          <ContextMenuItem
            className="justify-between gap-4 px-3 text-text-secondary"
            onClick={(e) => {
              e.stopPropagation()
              handleAddNote()
              handlePaneContextmenuCancel()
            }}
          >
            {t('nodes.note.addNote', { ns: 'workflow' })}
          </ContextMenuItem>
          {isCommentModeAvailable && (
            <ContextMenuItem
              disabled={!!pendingComment}
              className={cn(
                'justify-between gap-4 px-3 text-text-secondary',
                pendingComment && 'cursor-not-allowed opacity-50',
              )}
              onClick={(e) => {
                e.stopPropagation()
                if (pendingComment)
                  return
                setCommentQuickAdd(true)
                setCommentPlacing(true)
                handlePaneContextmenuCancel()
              }}
            >
              {t('comments.actions.addComment', { ns: 'workflow' })}
            </ContextMenuItem>
          )}
          <ContextMenuItem
            className="justify-between gap-4 px-3 text-text-secondary"
            onClick={handleRunAction}
          >
            {isChatMode ? t('common.debugAndPreview', { ns: 'workflow' }) : t('common.run', { ns: 'workflow' })}
            {!isChatMode && <ShortcutKbd shortcut="workflow.open-test-run-menu" />}
          </ContextMenuItem>
        </ContextMenuGroup>
        <ContextMenuSeparator />
        <ContextMenuGroup>
          <ContextMenuItem
            disabled={!clipboardElements.length}
            className={cn(
              'justify-between gap-4 px-3 text-text-secondary',
              !clipboardElements.length && 'cursor-not-allowed opacity-50',
            )}
            onClick={() => {
              if (clipboardElements.length) {
                handleNodesPaste()
                handlePaneContextmenuCancel()
              }
            }}
          >
            {t('common.pasteHere', { ns: 'workflow' })}
            <ShortcutKbd shortcut="workflow.paste" />
          </ContextMenuItem>
        </ContextMenuGroup>
        <ContextMenuSeparator />
        <ContextMenuGroup>
          <ContextMenuItem
            className="justify-between gap-4 px-3 text-text-secondary"
            onClick={() => exportCheck?.()}
          >
            {t('export', { ns: 'app' })}
          </ContextMenuItem>
          <ContextMenuItem
            className="justify-between gap-4 px-3 text-text-secondary"
            onClick={() => setShowImportDSLModal(true)}
          >
            {t('importApp', { ns: 'app' })}
          </ContextMenuItem>
        </ContextMenuGroup>
      </ContextMenuContent>
    </ContextMenu>
  )
}

export default memo(PanelContextmenu)