#!/usr/bin/env php
<?php

require_once dirname(__FILE__).'/../var/SymfonyRequirements.php';

$lineSize = 70;
$symfonyRequirements = new SymfonyRequirements();
$iniPath = $symfonyRequirements->getPhpIniConfigPath();

echo_title('Symfony Requirements Checker');

echo '> PHP is using the following php.ini file:'.PHP_EOL;
if ($iniPath) {
	echo_style('green', '  '.$iniPath);
} else {
	echo_style('yellow', '  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 $req) {
	if ($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 Symfony projects');
} else {
	echo_block('error', 'ERROR', 'Your system is not ready to run Symfony projects');

	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(' ', $width));
	echo PHP_EOL;
	echo_style($style, str_pad(' ['.$title.']', $width, ' ', STR_PAD_RIGHT));
	echo PHP_EOL;
	echo_style($style, $message);
	echo PHP_EOL;
	echo_style($style, str_repeat(' ', $width));
	echo 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;
}
