import assert from 'node:assert/strict';
import { test } from 'node:test';
import { mbLevenshtein, mbStrlen } from '../lib/mbLevenshtein.js';
import { bucket, entryPath } from '../lib/paths.js';
import { parseQuery } from '../lib/queryParser.js';
import { filterAndLower, filterTitle, translit } from '../lib/titleFilter.js';

test('mbLevenshtein basic', () => {
  assert.equal(mbLevenshtein('kitten', 'sitting'), 3);
  assert.equal(mbLevenshtein('', 'abc'), 3);
  assert.equal(mbLevenshtein('abc', ''), 3);
  assert.equal(mbLevenshtein('abc', 'abc'), 0);
});

test('mbLevenshtein utf-8', () => {
  // PHP mb_levenshtein remaps multibyte chars; JS works on code points.
  // The distance for équal chars should be 0.
  assert.equal(mbLevenshtein('café', 'café'), 0);
  assert.equal(mbLevenshtein('été', 'été'), 0);
  assert.equal(mbLevenshtein('é', 'e'), 1);
});

test('mbLevenshtein custom costs', () => {
  // INS=10 REP=12 DEL=10 mirrors searchmultithreads.php
  assert.equal(mbLevenshtein('abc', 'abcd', 10, 12, 10), 10);
  assert.equal(mbLevenshtein('abcd', 'abc', 10, 12, 10), 10);
  assert.equal(mbLevenshtein('abc', 'abd', 10, 12, 10), 12);
});

test('mbStrlen counts code points', () => {
  assert.equal(mbStrlen('abc'), 3);
  assert.equal(mbStrlen('café'), 4);
  assert.equal(mbStrlen('œuf'), 3);
});

test('translit replaces ligatures and superscripts', () => {
  assert.equal(translit('Œuf'), 'Oeuf');
  assert.equal(translit('cœur'), 'coeur');
  assert.equal(translit('m²'), 'm2');
});

test('filterTitle strips non-Latin/digit', () => {
  assert.equal(filterTitle('Hello, World!'), 'HelloWorld');
  assert.equal(filterTitle('Inception (2010)'), 'Inception2010');
  assert.equal(filterTitle('北京'), '');
  assert.equal(filterTitle('Café au lait'), 'Caféaulait');
});

test('filterAndLower', () => {
  assert.equal(filterAndLower('Mr. Robot S01E02'), 'mrrobots01e02');
  assert.equal(filterAndLower('Cœur de Pirate'), 'coeurdepirate');
});

test('parseQuery: movie with year', () => {
  const r = parseQuery('Inception 2010 1080p BluRay');
  assert.equal(r.type, 'movie');
  assert.equal(r.yearin, 2010);
  assert.equal(r.episodein, '');
  assert.equal(r.titlein.startsWith('Inception '), true);
});

test('parseQuery: 1080 is not a year', () => {
  const r = parseQuery('Inception 2010 1080p');
  assert.equal(r.yearin, 2010);
});

test('parseQuery: tv with episode', () => {
  const r = parseQuery('Mr.Robot.S01E02.FRENCH.1080p');
  assert.equal(r.type, 'tv');
  assert.equal(r.episodein, 'S01E02');
  assert.equal(r.titlein.startsWith('Mr.Robot'), true);
});

test('parseQuery: tv with year + episode', () => {
  const r = parseQuery('Some.Show.2015.S02E10');
  assert.equal(r.type, 'tv');
  assert.equal(r.yearin, 2015);
  assert.equal(r.episodein, 'S02E10');
});

test('parseQuery: no year no episode', () => {
  const r = parseQuery('Just a title');
  assert.ok(r.error);
});

test('paths bucket + entryPath', () => {
  assert.equal(bucket(100), '0');
  assert.equal(bucket(1500), '1');
  assert.equal(bucket(1675803), '1675');
  assert.ok(entryPath('movie', 100).endsWith('/movie/0/100.json'));
  assert.ok(entryPath('tv', 1408).endsWith('/tv/1/1408.json'));
});