Function getCollapsibleToolInfo

src/utils/collapseReadSearch.ts:310–349

* Get the tool name, input, and search/read info from a message if it's a collapsible tool use. * Returns null if the message is not a collapsible tool use.

(
  msg: RenderableMessage,
  tools: Tools,
)

 * Returns null if the message is not a collapsible tool use.
 */
function getCollapsibleToolInfo(
  msg: RenderableMessage,
  tools: Tools,
): {
  name: string
  input: unknown
  isSearch: boolean
  isRead: boolean
  isList: boolean
  isREPL: boolean
  isMemoryWrite: boolean
  isAbsorbedSilently: boolean
  mcpServerName?: string
  isBash?: boolean
} | null {
  if (msg.type === 'assistant') {
    const content = getFirstContentItem(msg.message?.content)
    if (!content) return null
    const info = getSearchOrReadFromContent(content as { type: string; name?: string; input?: unknown }, tools)
    if (info && content.type === 'tool_use') {
      const toolUse = content as { type: 'tool_use'; name: string; input: unknown }
      return { name: toolUse.name, input: toolUse.input, ...info }
    }
  }
  if (msg.type === 'grouped_tool_use') {
    // For grouped tool uses, check the first message's input
    const firstContent = getFirstContentItem(msg.messages[0]?.message?.content)
    const firstToolUse = firstContent as { type: string; input?: unknown } | undefined
    const info = getSearchOrReadFromContent(
      firstToolUse
        ? { type: 'tool_use', name: msg.toolName, input: firstToolUse.input }
        : undefined,
      tools,
    )
    if (info && firstContent && firstContent.type === 'tool_use') {
      return { name: msg.toolName, input: firstToolUse?.input, ...info }
    }
  }
  return null
}

/**
 * Check if a message is assistant text that should break a group.