// @ts-nocheck
import test from 'node:test';
import assert from 'node:assert/strict';
import { makePagedData } from '../src/classes/CommandRegistry';

test('makePagedData packs many small items into one page up to the count cap', () => {
  const items = Array.from({ length: 1500 }, (_, i) => ({ id: i, url: 'chrome://newtab/' }));
  const page = makePagedData(items, { offset: 0, limit: 1000 });

  assert.equal(page.items.length, 1000); // count cap, well under the byte budget
  assert.equal(page.nextOffset, 1000);
  assert.equal(page.total, 1500);
});

test('makePagedData splits on the byte budget for oversized items', () => {
  // Each item ~200KB; only a few fit under the 768KB budget per page.
  const big = 'x'.repeat(200 * 1024);
  const items = Array.from({ length: 10 }, (_, i) => ({ id: i, favIconUrl: big }));
  const page = makePagedData(items, { offset: 0, limit: 1000 });

  assert.ok(page.items.length >= 1 && page.items.length < 10, `expected partial page, got ${page.items.length}`);
  assert.equal(page.nextOffset, page.items.length);
});

test('makePagedData always advances by at least one item', () => {
  // A single item larger than the whole budget must still be returned alone.
  const huge = 'x'.repeat(2 * 1024 * 1024);
  const items = [{ id: 0, favIconUrl: huge }, { id: 1 }];
  const page = makePagedData(items, { offset: 0, limit: 1000 });

  assert.equal(page.items.length, 1);
  assert.equal(page.nextOffset, 1);
});

test('makePagedData reports null nextOffset on the final page', () => {
  const items = [{ id: 0 }, { id: 1 }, { id: 2 }];
  const page = makePagedData(items, { offset: 2, limit: 1000 });

  assert.equal(page.items.length, 1);
  assert.equal(page.nextOffset, null);
});