<?php

declare(strict_types=1);

namespace Scape\Tests;

use PHPUnit\Framework\TestCase;
use Scape\Engine;

class FilterTest extends TestCase
{
    private string $templatesDir;
    private string $filtersDir;

    protected function setUp(): void
    {
        $this->templatesDir = __DIR__ . '/fixtures';
        $this->filtersDir = __DIR__ . '/fixtures/filters';
    }

    public function testInternalFilters(): void
    {
        file_put_contents($this->templatesDir . '/tests/filters_internal.scape.php', 
            '{( uses filters:string )}' . "\n" .
            '{{ name | lower }}' . "\n" .
            '{{ name | upper }}' . "\n" .
            '{{ name | lower | ucfirst }}' . "\n" .
            '{{ price | currency(\'USD\') }}' . "\n" .
            '{{ val | float(3) }}' . "\n" .
            '{{ date_val | date(\'Y-m-d\') }}' . "\n" .
            '{{ bio | truncate(10) }}' . "\n" .
            '{{ missing | default(\'N/A\') }}' . "\n" .
            '{{ tags | join(\', \') }}' . "\n" .
            '{{ tags | first }}' . "\n" .
            '{{ tags | last }}' . "\n" .
            '{{ bio | word_count }}' . "\n" .
            '{{ user_data | keys | join(\',\') }}' . "\n" .
            '{{ query | url_encode }}' . "\n" .
            '{{{ user_data | json }}}'
        );

        $engine = new Engine(['templates_dir' => $this->templatesDir]);
        $output = $engine->render('tests.filters_internal', [
            'name' => 'fUnKy',
            'price' => 1234.56,
            'val' => 123.45678,
            'date_val' => 1707693300,
            'bio' => 'A very long biography indeed.',
            'missing' => '',
            'tags' => ['PHP', 'Scape', 'Templates'],
            'user_data' => ['id' => 1, 'name' => 'Funky'],
            'query' => 'hello world'
        ]);

        $lines = explode("\n", $output);
        $this->assertEquals('funky', $lines[0]);
        $this->assertEquals('FUNKY', $lines[1]);
        $this->assertEquals('Funky', $lines[2]);
        $this->assertEquals('$1,234.56', $lines[3]);
        $this->assertEquals('123.457', $lines[4]);
        
        $this->assertStringContainsString('2024-02-11', $output);
        $this->assertStringContainsString('A very lon...', $output);
        $this->assertStringContainsString('N/A', $output);
        $this->assertStringContainsString('PHP, Scape, Templates', $output);
        $this->assertStringContainsString('PHP', $output);
        $this->assertStringContainsString('Templates', $output);
        $this->assertStringContainsString('5', $output);
        $this->assertStringContainsString('id,name', $output);
        $this->assertStringContainsString('hello+world', $output);
        $this->assertStringContainsString('{"id":1,"name":"Funky"}', $output);

        unlink($this->templatesDir . '/tests/filters_internal.scape.php');
    }

    public function testCustomFilterWithArguments(): void
    {
        file_put_contents($this->templatesDir . '/tests/filters_custom.scape.php', 
            '{( load_filter(\'currency\') )}' . "\n" .
            '{{ price | currency }}' . "\n" .
            '{{ price | currency(\'£\') }}' . "\n" .
            '{{ price | currency(sym) }}'
        );

        $engine = new Engine([
            'templates_dir' => $this->templatesDir,
            'filters_dir' => $this->filtersDir
        ]);
        
        $output = $engine->render('tests.filters_custom', [
            'price' => 1234.567,
            'sym' => '€'
        ]);

        $expected = "$1,234.57\n£1,234.57\n€1,234.57";
        $this->assertEquals($expected, $output);

        unlink($this->templatesDir . '/tests/filters_custom.scape.php');
    }

    public function testFiltersInForeach(): void
    {
        file_put_contents($this->templatesDir . '/tests/filters_foreach.scape.php', 
            '{( uses filters:string )}' . "\n" .
            '{( foreach key in user_data | keys )}' . "\n" .
            '{{ key }}: {{ user_data[key] }}' . "\n" .
            '{( endforeach )}'
        );

        $engine = new Engine(['templates_dir' => $this->templatesDir]);
        $output = $engine->render('tests.filters_foreach', [
            'user_data' => ['id' => 1, 'name' => 'Funky']
        ]);

        $this->assertStringContainsString('id: 1', $output);
        $this->assertStringContainsString('name: Funky', $output);

        unlink($this->templatesDir . '/tests/filters_foreach.scape.php');
    }

    public function testFiltersInInclude(): void
    {
        file_put_contents($this->templatesDir . '/partials/keys_list.scape.php', 
            'Keys: {{ context | join(\', \') }}'
        );
        file_put_contents($this->templatesDir . '/tests/filters_include.scape.php', 
            '{( uses filters:string )}' . "\n" .
            '{[ include \'keys_list\' with user_data | keys ]}'
        );

        $engine = new Engine([
            'templates_dir' => $this->templatesDir,
            'partials_dir' => $this->templatesDir . '/partials'
        ]);
        $output = $engine->render('tests.filters_include', [
            'user_data' => ['id' => 1, 'name' => 'Funky']
        ]);

        $this->assertEquals('Keys: id, name', trim($output));

        unlink($this->templatesDir . '/partials/keys_list.scape.php');
        unlink($this->templatesDir . '/tests/filters_include.scape.php');
    }
}