Function getMultiPromptPreview

cli/src/utils/implementor-helpers.ts:736–787

(
  blocks: ContentBlock[] | undefined,
  isAgentComplete?: boolean,
)

 * @param isAgentComplete - Whether the parent agent has finished (status === 'complete')
 */
export function getMultiPromptPreview(
  blocks: ContentBlock[] | undefined,
  isAgentComplete?: boolean,
): string | null {
  const progress = getMultiPromptProgress(blocks)
  if (!progress) return null

  const { total, completed, failed, isSelecting, isSelectorComplete } = progress
  const finished = completed + failed

  // Agent is fully complete - show final state with selection info
  // Use multi-line format: line 1 = count, lines 2-3 = reason (truncated to fit)
  if (isAgentComplete) {
    const reason = extractSelectionReason(blocks)
    if (reason) {
      // Capitalize first letter and truncate to 2 lines (line 1 is the count)
      const formattedReason = reason.charAt(0).toUpperCase() + reason.slice(1)
      const lines = formattedReason.split('\n')
      const truncatedReason =
        lines.length > 2
          ? lines.slice(0, 2).join('\n').trimEnd() + '...'
          : formattedReason
      return `${total} proposals evaluated\n${truncatedReason}`
    }
    return `${total} proposals evaluated`
  }

  // Selector completed but agent still running = applying phase
  if (isSelectorComplete) {
    return 'Applying selected changes...'
  }

  if (isSelecting) {
    return `${total} proposals complete • Selecting best...`
  }

  if (finished === total && total > 0) {
    if (failed > 0) {
      return `${completed}/${total} proposals complete (${failed} failed)`
    }
    return `${total} proposals complete`
  }

  if (finished > 0) {
    if (failed > 0) {
      return `${completed}/${total} complete, ${failed} failed...`
    }
    return `${completed}/${total} proposals complete...`
  }

  return `Generating ${total} proposals...`
}