// Channel submissions target any conversation. EOF and Stop close the harness cleanly.
export async function serve(harness: any, context: any, afterSubmit?: () => Promise<void>) {
  while (true) {
    const input = await Deno.core.ops.op_input();
    if (input === null || input.type === 'stop') {
      await harness.waitForIdle(context);
      return;
    }
    const conversation = await harness.conversation(input.conversation, context);
    if (!conversation) throw new Error(`Unknown conversation: ${input.conversation}`);
    const submission = await conversation.submit({
      type: 'input', content: input.content, requestId: input.requestId,
    }, context);
    if (afterSubmit) {
      const result = await submission.wait(context);
      await afterSubmit();
      if (result.status !== 'done') throw new Error(`Run ended: ${JSON.stringify(result)}`);
    }
  }
}