import React from 'react'
import { Text } from '@anthropic/ink'
import type { CollapsedReadSearchGroup } from '../../types/message.js'

/**
 * Plain function (not a React component) so the React Compiler won't
 * hoist the teamMemory* property accesses for memoization. This module
 * is only loaded when feature('TEAMMEM') is true.
 */
export function checkHasTeamMemOps(message: CollapsedReadSearchGroup): boolean {
  return (
    (message.teamMemorySearchCount ?? 0) > 0 ||
    (message.teamMemoryReadCount ?? 0) > 0 ||
    (message.teamMemoryWriteCount ?? 0) > 0
  )
}

/**
 * Renders team memory count parts for the collapsed read/search UI.
 * This module is only loaded when feature('TEAMMEM') is true,
 * so DCE removes it entirely from external builds.
 */
export function TeamMemCountParts({
  message,
  isActiveGroup,
  hasPrecedingParts,
}: {
  message: CollapsedReadSearchGroup
  isActiveGroup: boolean | undefined
  hasPrecedingParts: boolean
}): React.ReactNode {
  const tmReadCount = message.teamMemoryReadCount ?? 0
  const tmSearchCount = message.teamMemorySearchCount ?? 0
  const tmWriteCount = message.teamMemoryWriteCount ?? 0

  if (tmReadCount === 0 && tmSearchCount === 0 && tmWriteCount === 0) {
    return null
  }

  const nodes: React.ReactNode[] = []
  let count = hasPrecedingParts ? 1 : 0

  if (tmReadCount > 0) {
    const verb = isActiveGroup
      ? count === 0
        ? 'Recalling'
        : 'recalling'
      : count === 0
        ? 'Recalled'
        : 'recalled'
    if (count > 0) {
      nodes.push(<Text key="comma-tmr">, </Text>)
    }
    nodes.push(
      <Text key="team-mem-read">
        {verb} <Text bold>{tmReadCount}</Text> team{' '}
        {tmReadCount === 1 ? 'memory' : 'memories'}
      </Text>,
    )
    count++
  }

  if (tmSearchCount > 0) {
    const verb = isActiveGroup
      ? count === 0
        ? 'Searching'
        : 'searching'
      : count === 0
        ? 'Searched'
        : 'searched'
    if (count > 0) {
      nodes.push(<Text key="comma-tms">, </Text>)
    }
    nodes.push(<Text key="team-mem-search">{`${verb} team memories`}</Text>)
    count++
  }

  if (tmWriteCount > 0) {
    const verb = isActiveGroup
      ? count === 0
        ? 'Writing'
        : 'writing'
      : count === 0
        ? 'Wrote'
        : 'wrote'
    if (count > 0) {
      nodes.push(<Text key="comma-tmw">, </Text>)
    }
    nodes.push(
      <Text key="team-mem-write">
        {verb} <Text bold>{tmWriteCount}</Text> team{' '}
        {tmWriteCount === 1 ? 'memory' : 'memories'}
      </Text>,
    )
  }

  return <>{nodes}</>
}