<?php

namespace App\Komma\QualityAssurance;

/**
 * Runs unit / feature / browser tests for the shop
 *
 * Class TestsController
 */
class TestsController implements TestsControllerInterface
{
    /**
     * Folder where the Unit, Feature, test folders and Reports folder is stored
     * @var string
     */
    private $testsFolder;

    /**
     * Folder where the browser screenshots are stored
     */
    private $screenshotFolder;

    /**
     * @var string The directory this file resides in relative to the root of this project.
     */
    private $baseDirectory;

    /**
     * @var bool Wheter or not to show more debugging information about phpunit/dusk
     */
    private $debug;

    public function __construct()
    {
        $this->baseDirectory = base_path().DIRECTORY_SEPARATOR;
        $this->testsFolder = $this->baseDirectory.'Tests'.DIRECTORY_SEPARATOR;
        $this->screenshotFolder = $this->baseDirectory.'Tests'.DIRECTORY_SEPARATOR.'Browser'.DIRECTORY_SEPARATOR.'screenshots'.DIRECTORY_SEPARATOR;
        $this->debug = true;
    }

    public function showBanner($text = 'testing')
    {
        $horizontalBorderWidth = 55;
        $horizontalBorderSymbol = '#';
        $verticalBorderSymbol = '#';
        $borderThickness = 1;

        $horizontalBorder = str_repeat($horizontalBorderSymbol, $horizontalBorderWidth);
        $decoratedText = str_repeat($verticalBorderSymbol, $borderThickness).
                         str_pad($text, $horizontalBorderWidth - ($borderThickness * 2), ' ', STR_PAD_BOTH).
                         str_repeat($verticalBorderSymbol, $borderThickness);

        for ($index = 0; $index < $borderThickness; $index++) {
            echo $horizontalBorder.PHP_EOL;
        }
        echo $decoratedText.PHP_EOL;
        for ($index = 0; $index < $borderThickness; $index++) {
            echo $horizontalBorder.PHP_EOL;
        }
        echo PHP_EOL;
    }

    public function phpunit(string $filterOrGroup = null, string $filterOrGroupValue = null)
    {
        $this->showBanner('Starting unit test....');

        if ($this->debug) {
            $phpUnit = 'php -d display_errors=On -d memory_limit=768M '.base_path('vendor/bin/phpunit');
        } else {
            $phpUnit = base_path('vendor/bin/phpunit');
        }

        $parameters = [];
        $parameters['-c'] = $this->baseDirectory.'phpunit.xml';
        $parameters['--bootstrap'] = base_path('bootstrap/autoload.php');
//        $parameters['--coverage-clover'] = $this->testsFolder.'reports'.DIRECTORY_SEPARATOR.'clover';
//        $parameters['--coverage-html'] = $this->testsFolder.'reports'.DIRECTORY_SEPARATOR.'html';

        if ($filterOrGroupValue != '' && ($filterOrGroup == '--filter' || $filterOrGroup == '--group')) {
            $parameters[$filterOrGroup] = $filterOrGroupValue;
        }

        $parameterstring = '';
        foreach ($parameters as $key => $parameter) {
            $parameterstring .= ' '.$key.' '.$parameter;
        }

        if ($this->debug) {
            $command = $phpUnit.' --debug '.$parameterstring;
        } else {
            $command = $phpUnit.$parameterstring;
        }

        $lines = [];

        if ($this->debug) {
            $lines[] = $command;
            $lines[] = '';
        }
        $lines[] = 'Running command to test kms: '.$command;
        exec($command, $lines);

        $this->echoResult($lines);
    }

    public function clearBrowserScreenshots()
    {
        $this->showBanner('Clearing old browser test screenshots');

        if (! file_exists($this->screenshotFolder)) {
            return;
        }

        $images = glob($this->screenshotFolder.'*.png');
        foreach ($images as $image) {
            unlink($image);
        }
    }

    public function dusk(string $filterOrGroup = null, string $filterOrGroupValue = null)
    {
        $this->clearBrowserScreenshots();

        $this->showBanner('Starting browser test...');

        if ($this->debug) {
            $phpUnit = 'php -d display_errors=On -d memory_limit=768M '.base_path('vendor/bin/phpunit');
        } else {
            $phpUnit = base_path('vendor/bin/phpunit');
        }

        $parameters = [];
        $parameters['-c'] = $this->baseDirectory.'phpunit.dusk.xml';
        $parameters['--bootstrap'] = base_path('bootstrap/autoload.php');
//        $parameters['--coverage-clover'] = $this->testsFolder.'reports'.DIRECTORY_SEPARATOR.'clover';
//        $parameters['--coverage-html'] = $this->testsFolder.'reports'.DIRECTORY_SEPARATOR.'html';

        if ($filterOrGroupValue != '' && ($filterOrGroup == '--filter' || $filterOrGroup == '--group')) {
            $parameters[$filterOrGroup] = $filterOrGroupValue;
        }

        $parameterstring = '';
        foreach ($parameters as $key => $parameter) {
            $parameterstring .= ' '.$key.' '.$parameter;
        }

        if ($this->debug) {
            $command = $phpUnit.' --debug '.$parameterstring;
        } else {
            $command = $phpUnit.$parameterstring;
        }

        $lines = [];
        $lines[] = 'Running command to test kms: '.$command;
        exec($command, $lines);
        $this->echoResult($lines);
    }

    public function phpbench(string $filterOrGroup = null, string $filterOrGroupValue = null)
    {
        $this->showBanner('Starting shop stress tests / benchmarks...');

        $phpbench = base_path('vendor/bin/phpbench');

        $parameters = [];
        $parameters['--config'] = $this->baseDirectory.'phpbench_config.json';
        $parameters['--report'] = 'kms';

        if ($filterOrGroupValue != '' && ($filterOrGroup == '--filter' || $filterOrGroup == '--group')) {
            $parameters[$filterOrGroup] = $filterOrGroupValue;
        }

        $parameterstring = ' ';
        foreach ($parameters as $key => $parameter) {
            $parameterstring .= $key.'='.$parameter.' ';
        }

        $command = $phpbench.' run'.$parameterstring.'tests/Benchmark';

        $lines = [];
        $lines[] = 'Running command to test kms: '.$command;
        exec($command, $lines);
        $this->echoResult($lines);
    }

    /**
     * Echos exec command result
     *
     * @param array $result
     */
    private function echoResult(array $result)
    {
        foreach ($result as $line) {
            echo $line.PHP_EOL;
        }
    }
}