import figures from 'figures'
import * as React from 'react'
import { useCallback, useEffect } from 'react'
import { getOriginalCwd } from '../../../bootstrap/state.js'
import type { CommandResultDisplay } from '../../../commands.js'
import { Select } from '../../../components/CustomSelect/select.js'
import { Box, Text, useTabHeaderFocus } from '@anthropic/ink'
import type { ToolPermissionContext } from '../../../Tool.js'

type Props = {
  onExit: (
    result?: string,
    options?: { display?: CommandResultDisplay },
  ) => void
  toolPermissionContext: ToolPermissionContext
  onRequestAddDirectory: () => void
  onRequestRemoveDirectory: (path: string) => void
  onHeaderFocusChange?: (focused: boolean) => void
}

type DirectoryItem = {
  path: string
  isCurrent: boolean
  isDeletable: boolean
}

export function WorkspaceTab({
  onExit,
  toolPermissionContext,
  onRequestAddDirectory,
  onRequestRemoveDirectory,
  onHeaderFocusChange,
}: Props): React.ReactNode {
  const { headerFocused, focusHeader } = useTabHeaderFocus()
  useEffect(() => {
    onHeaderFocusChange?.(headerFocused)
  }, [headerFocused, onHeaderFocusChange])
  // Get only additional workspace directories (not the current working directory)
  const additionalDirectories = React.useMemo((): DirectoryItem[] => {
    return Array.from(
      toolPermissionContext.additionalWorkingDirectories.keys(),
    ).map(path => ({
      path,
      isCurrent: false,
      isDeletable: true,
    }))
  }, [toolPermissionContext.additionalWorkingDirectories])

  const handleDirectorySelect = useCallback(
    (selectedValue: string) => {
      if (selectedValue === 'add-directory') {
        onRequestAddDirectory()
        return
      }

      const directory = additionalDirectories.find(
        d => d.path === selectedValue,
      )
      if (directory && directory.isDeletable) {
        onRequestRemoveDirectory(directory.path)
      }
    },
    [additionalDirectories, onRequestAddDirectory, onRequestRemoveDirectory],
  )

  const handleCancel = useCallback(
    () => onExit('Workspace dialog dismissed', { display: 'system' }),
    [onExit],
  )

  // Main list view options
  const options = React.useMemo(() => {
    const opts = additionalDirectories.map(dir => ({
      label: dir.path,
      value: dir.path,
    }))

    opts.push({
      label: `Add directory${figures.ellipsis}`,
      value: 'add-directory',
    })

    return opts
  }, [additionalDirectories])

  // Main list view
  return (
    <Box flexDirection="column" marginBottom={1}>
      {/* Current working directory section */}
      <Box flexDirection="row" marginTop={1} marginLeft={2} gap={1}>
        <Text>{`-  ${getOriginalCwd()}`}</Text>
        <Text dimColor>(Original working directory)</Text>
      </Box>
      <Select
        options={options}
        onChange={handleDirectorySelect}
        onCancel={handleCancel}
        visibleOptionCount={Math.min(10, options.length)}
        onUpFromFirstItem={focusHeader}
        isDisabled={headerFocused}
      />
    </Box>
  )
}