Function handleAutoCompaction

extensions/cli/src/commands/chat.ts:222–301

(
  chatHistory: ChatHistoryItem[],
  model: ModelConfig,
  llmApi: BaseLlmApi,
  isHeadless: boolean,
  format?: "json",
)

// Helper function to handle auto-compaction for headless mode
async function handleAutoCompaction(
  chatHistory: ChatHistoryItem[],
  model: ModelConfig,
  llmApi: BaseLlmApi,
  isHeadless: boolean,
  format?: "json",
): Promise<number | null> {
  const { handleAutoCompaction: coreAutoCompaction } = await import(
    "../stream/streamChatResponse.autoCompaction.js"
  );

  // Custom callbacks for headless mode console output
  const callbacks = {
    onSystemMessage: (message: string) => {
      if (
        message.includes("Auto-compacting") ||
        message.includes("Approaching")
      ) {
        if (!isHeadless) {
          console.info(chalk.yellow(`\n${message}`));
        } else if (format === "json") {
          safeStdout(
            JSON.stringify({
              status: "info",
              message: "Auto-compacting triggered",
              contextUsage:
                calculateContextUsagePercentage(
                  countChatHistoryTokens(
                    services.chatHistory.getHistory(),
                    model,
                  ),
                  model,
                ) + "%",
            }) + "\n",
          );
        }
      } else if (message.includes("✓")) {
        if (!isHeadless) {
          console.info(chalk.green(message));
        } else if (format === "json") {
          // Omit history length here; service updates occur after compaction completes
          safeStdout(
            JSON.stringify({
              status: "success",
              message: "Auto-compacted successfully",
            }) + "\n",
          );
        }
      } else if (message.includes("Warning:")) {
        if (!isHeadless) {
          console.error(chalk.red(message));
          console.info(chalk.yellow("Continuing without compaction..."));
        } else if (format === "json") {
          safeStdout(
            JSON.stringify({
              status: "warning",
              message: "Auto-compaction failed, continuing without compaction",
            }) + "\n",