<?php
 
 require_once dirname(__FILE__).'/SymfonyRequirements.php';
 
 $lineSize = 70;
 $symfonyRequirements = new SymfonyRequirements();
 $iniPath = $symfonyRequirements->getPhpIniConfigPath();
 
 echo_title('Symfony2 Requirements Checker');
 
 echo '> PHP is using the following php.ini file:'.PHP_EOL;
 if ($iniPath) {
     echo_style('green', '  '.$iniPath);
 } else {
     echo_style('warning', '  WARNING: No configuration file (php.ini) used by PHP!');
 }
 
 echo PHP_EOL.PHP_EOL;
 
 echo '> Checking Symfony requirements:'.PHP_EOL.'  ';
 
 $messages = array();
 foreach ($symfonyRequirements->getRequirements() as $req) {
     /** @var $req Requirement */
     if ($helpText = get_error_message($req, $lineSize)) {
         echo_style('red', 'E');
         $messages['error'][] = $helpText;
     } else {
         echo_style('green', '.');
     }
 }
 
 $checkPassed = empty($messages['error']);
 
 foreach ($symfonyRequirements->getRecommendations() as $req) {
     if ($helpText = get_error_message($req, $lineSize)) {
         echo_style('yellow', 'W');
         $messages['warning'][] = $helpText;
     } else {
         echo_style('green', '.');
     }
 }
 
 if ($checkPassed) {
     echo_block('success', 'OK', 'Your system is ready to run Symfony2 projects', true);
 } else {
     echo_block('error', 'ERROR', 'Your system is not ready to run Symfony2 projects', true);
 
     echo_title('Fix the following mandatory requirements', 'red');
 
     foreach ($messages['error'] as $helpText) {
         echo ' * '.$helpText.PHP_EOL;
     }
 }
 
 if (!empty($messages['warning'])) {
     echo_title('Optional recommendations to improve your setup', 'yellow');
 
     foreach ($messages['warning'] as $helpText) {
         echo ' * '.$helpText.PHP_EOL;
     }
 }
 
 echo PHP_EOL;
 echo_style('title', 'Note');
 echo '  The command console could use a different php.ini file'.PHP_EOL;
 echo_style('title', '~~~~');
 echo '  than the one used with your web server. To be on the'.PHP_EOL;
 echo '      safe side, please check the requirements from your web'.PHP_EOL;
 echo '      server using the ';
 echo_style('yellow', 'web/config.php');
 echo ' script.'.PHP_EOL;
 echo PHP_EOL;
 
 exit($checkPassed ? 0 : 1);
 
 function get_error_message(Requirement $requirement, $lineSize)
 {
     if ($requirement->isFulfilled()) {
         return;
     }
 
     $errorMessage  = wordwrap($requirement->getTestMessage(), $lineSize - 3, PHP_EOL.'   ').PHP_EOL;
     $errorMessage .= '   > '.wordwrap($requirement->getHelpText(), $lineSize - 5, PHP_EOL.'   > ').PHP_EOL;
 
     return $errorMessage;
 }
 
 function echo_title($title, $style = null)
 {
     $style = $style ?: 'title';
 
     echo PHP_EOL;
     echo_style($style, $title.PHP_EOL);
     echo_style($style, str_repeat('~', strlen($title)).PHP_EOL);
     echo PHP_EOL;
 }
 
 function echo_style($style, $message)
 {
     // ANSI color codes
     $styles = array(
         'reset' => "\033[0m",
         'red' => "\033[31m",
         'green' => "\033[32m",
         'yellow' => "\033[33m",
         'error' => "\033[37;41m",
         'success' => "\033[37;42m",
         'title' => "\033[34m",
     );
     $supports = has_color_support();
 
     echo($supports ? $styles[$style] : '').$message.($supports ? $styles['reset'] : '');
 }
 
 function echo_block($style, $title, $message)
 {
     $message = ' '.trim($message).' ';
     $width = strlen($message);
 
     echo PHP_EOL.PHP_EOL;
 
     echo_style($style, str_repeat(' ', $width).PHP_EOL);
     echo_style($style, str_pad(' ['.$title.']',  $width, ' ', STR_PAD_RIGHT).PHP_EOL);
     echo_style($style, str_pad($message,  $width, ' ', STR_PAD_RIGHT).PHP_EOL);
     echo_style($style, str_repeat(' ', $width).PHP_EOL);
 }
 
 function has_color_support()
 {
     static $support;
 
     if (null === $support) {
         if (DIRECTORY_SEPARATOR == '\\') {
             $support = false !== getenv('ANSICON') || 'ON' === getenv('ConEmuANSI');
         } else {
             $support = function_exists('posix_isatty') && @posix_isatty(STDOUT);
         }
     }
 
     return $support;
 }