<?php

namespace Tests\Unit;

use App\Http\Controllers\GlobalSearchController;
use App\Services\SearchTerms;
use Illuminate\Database\PostgresConnection;
use PHPUnit\Framework\TestCase;

final class SearchTermsTest extends TestCase
{
    public function test_matches_all_words_in_any_order_without_case_or_accents(): void
    {
        $search = new SearchTerms;
        $tokens = $search->tokens('  NAMPULA   agronegócio Agronegócio  ');

        $this->assertSame(['nampula', 'agronegocio'], $tokens);
        $this->assertTrue($search->matches('Agronegócio em Nampula', $tokens));
        $this->assertFalse($search->matches('Agronegócio em Gaza', $tokens));
        $this->assertSame([], $search->tokens('   '));
    }

    public function test_sql_matches_each_word_across_fields_with_bound_literal_patterns(): void
    {
        $connection = new PostgresConnection(fn () => throw new \LogicException('A database must not be opened.'));
        $query = $connection->table('records');
        $search = new SearchTerms;
        $search->constrain($query, ['title', 'description'], $search->tokens('100% a_b'));

        $sql = $query->toSql();
        $this->assertStringContainsString('translate(lower(coalesce(title::text', $sql);
        $this->assertStringContainsString(' or ', $sql);
        $this->assertStringContainsString(' and ', $sql);
        $this->assertSame(['%100!%%', '%100!%%', '%a!_b%', '%a!_b%'], $query->getBindings());
        $this->assertStringNotContainsString('100%', $sql);
    }

    public function test_static_services_can_be_found_without_a_database(): void
    {
        $pages = (new \ReflectionMethod(GlobalSearchController::class, 'pages'))->invoke(new GlobalSearchController);
        $search = new SearchTerms;
        $matches = array_values(array_filter($pages, fn ($page) => $search->matches(implode(' ', $page), $search->tokens('FISCAL simulador'))));

        $this->assertCount(1, $matches);
        $this->assertSame('/simulador-fiscal', $matches[0]['url']);
    }

    public function test_spelling_variants_common_words_and_title_relevance(): void
    {
        $search = new SearchTerms;
        $tokens = $search->tokens('setores de investimento');
        $this->assertTrue($search->matches('Sectores de investimento', $tokens));
        $this->assertFalse($search->matches('Sector de saúde', $tokens));
        $this->assertTrue($search->matches('Projectos âncora', $search->tokens('projeto')));
        $this->assertTrue($search->matches('Oportunidades de investimento em energia', $search->tokens('Como investir em energia?')));
        $this->assertGreaterThan($search->score('Como investir', 'investir', ['investir']), $search->score('Investir', 'investir', ['investir']));
        $this->assertSame(['de'], $search->tokens('de'));
    }

    public function test_direct_titles_precede_titles_and_descriptions_that_reference_the_query(): void
    {
        $search = new SearchTerms;
        $phrase = 'corredor da beira';
        $tokens = $search->tokens($phrase);
        $titles = ['Açúcar no Corredor da Beira', 'Corredor da Beira e investimentos', 'Corredor da Beira', 'Produção de açúcar'];
        usort($titles, fn ($a, $b) => $search->score($b, $phrase, $tokens) <=> $search->score($a, $phrase, $tokens));

        $this->assertSame(['Corredor da Beira', 'Corredor da Beira e investimentos', 'Açúcar no Corredor da Beira', 'Produção de açúcar'], $titles);
        $this->assertSame($search->score('Corredor da Beira', $phrase, $tokens), $search->score('CORREDOR DA BEIRA', $phrase, $tokens));
    }

    public function test_database_relevance_uses_the_same_levels_and_escaped_prefix(): void
    {
        $connection = new PostgresConnection(fn () => throw new \LogicException('A database must not be opened.'));
        $query = $connection->table('records');
        $search = new SearchTerms;
        $search->orderByRelevance($query, 'title', '100% açúcar', $search->tokens('100% açúcar'), 'id');

        $this->assertStringContainsString('THEN 1000', $query->toSql());
        $this->assertStringContainsString('THEN 600', $query->toSql());
        $this->assertStringContainsString('THEN 400', $query->toSql());
        $this->assertSame(['100% acucar', '100!% acucar%', '%100!% acucar%'], array_slice($query->getBindings(), 0, 3));
    }
}