<?php

namespace Tests\Unit;

use PHPUnit\Framework\TestCase;
use System\Classes\Log;

class LogTest extends TestCase
{
    private string $dir;

    protected function setUp(): void
    {
        $this->dir = sys_get_temp_dir() . '/bicycle_log_' . uniqid();
        Log::$directory = $this->dir;
        Log::$threshold = Log::DEBUG;
    }

    protected function tearDown(): void
    {
        if (is_dir($this->dir)) {
            foreach (glob($this->dir . '/*') as $file) {
                unlink($file);
            }
            rmdir($this->dir);
        }
        Log::$directory = null;
        Log::$threshold = null;
    }

    private function logFile(string $channel): string
    {
        return $this->dir . '/' . $channel . '-' . date('Y-m-d') . '.log';
    }

    public function testWriteCreatesFileWithFormattedLine(): void
    {
        Log::info('Привет');

        $this->assertFileExists($this->logFile('action'));
        $content = file_get_contents($this->logFile('action'));
        $this->assertMatchesRegularExpression('/^\[\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\] INFO: Привет\n/', $content);
    }

    public function testChannelsSplitErrorsFromActions(): void
    {
        Log::info('действие');
        Log::error('сбой');

        // Действия — в action-файле, ошибки — в error-файле, не смешаны.
        $action = file_get_contents($this->logFile('action'));
        $error  = file_get_contents($this->logFile('error'));

        $this->assertStringContainsString('INFO: действие', $action);
        $this->assertStringNotContainsString('сбой', $action);
        $this->assertStringContainsString('ERROR: сбой', $error);
        $this->assertStringNotContainsString('действие', $error);
    }

    public function testWarningGoesToErrorChannel(): void
    {
        Log::warning('предупреждение');
        $this->assertFileDoesNotExist($this->logFile('action'));
        $this->assertStringContainsString('WARNING: предупреждение', file_get_contents($this->logFile('error')));
    }

    public function testThresholdFiltersLowerLevels(): void
    {
        Log::$threshold = Log::WARNING;

        Log::debug('низкий');
        Log::info('низкий');
        $this->assertFileDoesNotExist($this->logFile('action'));

        Log::warning('высокий');
        Log::error('высокий');
        $content = file_get_contents($this->logFile('error'));
        $this->assertStringContainsString('WARNING: высокий', $content);
        $this->assertStringContainsString('ERROR: высокий', $content);
    }

    public function testShortcutsUseCorrectLevelLabel(): void
    {
        Log::debug('d');
        Log::info('i');
        Log::warning('w');
        Log::error('e');

        $action = file_get_contents($this->logFile('action'));
        $error  = file_get_contents($this->logFile('error'));
        $this->assertStringContainsString('DEBUG: d', $action);
        $this->assertStringContainsString('INFO: i', $action);
        $this->assertStringContainsString('WARNING: w', $error);
        $this->assertStringContainsString('ERROR: e', $error);
    }

    public function testStrtrSubstitution(): void
    {
        Log::info('Пользователь :id вошёл', [':id' => 42]);
        $this->assertStringContainsString('Пользователь 42 вошёл', file_get_contents($this->logFile('action')));
    }

    public function testAppendsWithoutOverwriting(): void
    {
        Log::info('первая');
        Log::info('вторая');

        $content = file_get_contents($this->logFile('action'));
        $this->assertStringContainsString('первая', $content);
        $this->assertStringContainsString('вторая', $content);
        $this->assertSame(2, substr_count($content, "\n"));
    }

    public function testRequestInfoEmptyWithoutCurrentRequest(): void
    {
        // Request::$current не установлен в юнит-окружении.
        $this->assertSame('', Log::requestInfo());
    }

    public function testMaskHidesSensitiveKeys(): void
    {
        $method = new \ReflectionMethod(Log::class, 'mask');
        $method->setAccessible(true);

        $result = $method->invoke(null, [
            'email'      => 'a@b.com',
            'password'   => 'secret',
            'csrf_token' => 'abc123',
            'CSRF_TOKEN' => 'xyz',          // регистр не важен
        ]);

        $this->assertSame('a@b.com', $result['email']);
        $this->assertSame('***', $result['password']);
        $this->assertSame('***', $result['csrf_token']);
        $this->assertSame('***', $result['CSRF_TOKEN']);
    }
}