#!/usr/bin/env node
/**
 * Verify v1.49 session history + /agent/resume parity with goose-server 1.41.
 */
import { createV149Client } from './goose-v149-sse.mjs';

const client = createV149Client();

function messageCount(session) {
  const conversation = session?.conversation;
  if (!conversation) return 0;
  if (Array.isArray(conversation.messages)) return conversation.messages.length;
  if (Array.isArray(conversation)) return conversation.length;
  return Number(session?.message_count ?? session?.messageCount ?? 0);
}

async function main() {
  const list = await client.apiJson('/sessions', undefined, { method: 'GET' });
  const sessions = list?.sessions ?? [];
  const rich = sessions
    .slice()
    .sort((a, b) => Number(b.message_count ?? b.messageCount ?? 0) - Number(a.message_count ?? a.messageCount ?? 0))
    .find((item) => Number(item.message_count ?? item.messageCount ?? 0) > 0);

  if (!rich?.id) {
    throw new Error('no session with message_count > 0; run check-goosed-v149-provider.mjs first');
  }

  const sessionId = rich.id;
  const detailRes = await client.apiFetch(`/sessions/${sessionId}`, { method: 'GET' });
  const detailText = await detailRes.text();
  if (!detailRes.ok) {
    throw new Error(`GET /sessions/{id} ${detailRes.status}: ${detailText.slice(0, 400)}`);
  }
  const detail = JSON.parse(detailText);
  const beforeCount = messageCount(detail);
  if (beforeCount <= 0) {
    throw new Error(
      `GET /sessions/{id} returned empty conversation for message_count=${rich.message_count ?? rich.messageCount}`,
    );
  }

  const resume = await client.apiJson('/agent/resume', {
    session_id: sessionId,
    load_model_and_extensions: true,
  });
  if (!resume?.session?.id) {
    throw new Error('POST /agent/resume missing session');
  }
  const afterCount = messageCount(resume.session);
  if (afterCount <= 0) {
    throw new Error('POST /agent/resume returned session without conversation history');
  }

  const restart = await client.apiJson('/agent/restart', { session_id: sessionId });
  if (!Array.isArray(restart?.extension_results)) {
    throw new Error('POST /agent/restart missing extension_results array');
  }

  console.log(
    `GOOSE_V149_RESUME_OK: session=${sessionId} messages=${afterCount} `
      + `restartExtensions=${restart.extension_results.length}`,
  );
}

main().catch((error) => {
  console.error(`GOOSE_V149_RESUME_FAIL: ${error.message}`);
  process.exit(1);
});