import assert from 'node:assert/strict';
import test from 'node:test';
import { mapPlazaError, plazaInternals } from './plaza-posts.mjs';

test('normalizeTags trims, dedupes by order, and caps at five', () => {
  assert.deepEqual(plazaInternals.normalizeTags([' a ', 'b', '', 'c', 'd', 'e', 'f']), [
    'a',
    'b',
    'c',
    'd',
    'e',
  ]);
});

test('clampLimit enforces defaults and maximum', () => {
  assert.equal(plazaInternals.clampLimit(undefined), 20);
  assert.equal(plazaInternals.clampLimit(999), 50);
  assert.equal(plazaInternals.clampLimit(0), 20);
});

test('normalizeSort accepts recommend, hot, or new', () => {
  assert.equal(plazaInternals.normalizeSort(undefined), 'recommend');
  assert.equal(plazaInternals.normalizeSort('new'), 'new');
  assert.equal(plazaInternals.normalizeSort('hot'), 'hot');
  assert.equal(plazaInternals.normalizeSort('recommended'), 'recommend');
});

test('defaultPlazaCoverUrl derives a thumbnail png from publication url', () => {
  assert.equal(
    plazaInternals.defaultPlazaCoverUrl('/u/john/pages/demo'),
    '/u/john/pages/demo.thumbnail.png',
  );
  assert.equal(
    plazaInternals.defaultPlazaCoverUrl('/u/john/pages/demo?embed=plaza'),
    '/u/john/pages/demo.thumbnail.png?embed=plaza',
  );
  assert.equal(
    plazaInternals.defaultPlazaCoverUrl('/u/john/pages/demo/'),
    '/u/john/pages/demo/index.thumbnail.png',
  );
});

test('resolvePlazaCoverUrl prefers explicit cover urls and falls back to publication thumbnail', () => {
  assert.equal(
    plazaInternals.resolvePlazaCoverUrl(' https://cdn.example.com/cover.png ', '/u/john/pages/demo'),
    'https://cdn.example.com/cover.png',
  );
  assert.equal(
    plazaInternals.resolvePlazaCoverUrl('/u/john/pages/demo.thumbnail.png', 'https://example.com/u/john/pages/demo'),
    'https://example.com/u/john/pages/demo.thumbnail.png',
  );
  assert.equal(
    plazaInternals.resolvePlazaCoverUrl('', '/u/john/pages/demo'),
    '/u/john/pages/demo.thumbnail.png',
  );
});

test('mapPlazaError maps documented API codes', () => {
  assert.equal(mapPlazaError({ code: 'ALREADY_PUBLISHED' }), 409);
  assert.equal(mapPlazaError({ code: 'PUBLICATION_NOT_ONLINE' }), 422);
  assert.equal(mapPlazaError({ code: 'POST_PERMISSION_DENIED' }), 403);
  assert.equal(mapPlazaError({ code: 'unknown' }), 500);
});