<?php defined('IN_CMS') or die('No direct access allowed.');

/**
	Main menu
*/
function admin_menu() {

	$prefix = Config::get('application.admin_folder');

	$pages = array(
		'posts' => $prefix . '/posts',
		'pages' => $prefix . '/pages',
		'users' => $prefix . '/users',
		'metadata' => $prefix . '/metadata'
	);

	return $pages;
}

/**
	Custom fields
*/
function parse_fields($str) {
	$data = json_decode($str, true);
	return is_array($data) ? $data : array();
}

/**
	Url helpers
*/
function theme_url($file = '') {
	return Config::get('application.base_url') . 'system/admin/theme/' . ltrim($file, '/');
}

function admin_url($url = '') {
	return Url::make(Config::get('application.admin_folder') . '/' . ltrim($url, '/'));
}

/**
	String helpers
*/
function pluralise($amount, $str, $alt = '') {
	return $amount === 1 ? $str : $str . ($alt !== '' ? $alt : 's');
}

function truncate($str, $limit = 10, $elipse = ' [...]') {
	$words = preg_split('/\s+/', $str);

	if(count($words) <= $limit) {
		return $str;
	}

	return implode(' ', array_slice($words, 0, $limit)) . $elipse;
}
	
/**
	Error checking
*/
function latest_version() {
	// check we have curl support
	if(Curl::support() === false) {
		return 0;
	}

	// only run the version check once per session
	if(($version = Session::get('latest_version')) === false) {
		// returns plain text string with version number or 0 on failure.
		$version = floatval(Curl::get('http://anchorcms.com/version'));
		Session::set('latest_version', $version);
	}

	return $version;
}

function error_check() {
	$errors = array();

	//  Check for older versions
	if(version_compare(ANCHOR_VERSION, ($version = latest_version()), '<')) {
		$errors[] = 'Your version of Anchor is out of date. Please <a href="http://anchorcms.com">download the latest version</a>.';
	}

	// Check if the install directory is still present
	if (file_exists(PATH . 'install')) {
		$errors[] = 'Please delete the install directory or rename it.';
	}

	// Check if the upgrade directory is still present
	if (file_exists(PATH . 'upgrade')) {
		$errors[] = 'Please delete the upgrade directory or rename it.';
	}

	// do something useful with it
	return count($errors) ? $errors : false;
}

/**
	Benchmarking
*/
function execution_time() {
	$miliseconds = microtime(true) - ANCHOR_START;
	return round($miliseconds, 4);
}

// return in mb
function memory_usage() {
	return memory_get_peak_usage(true) / 1024;
}

// database profile information
function db_profile() {
	// total query time
	$total = 0;

	$html = '';
	$html .= '<table id="debug_table" class="debug">';
	$html .= '<thead><tr><th>SQL</th><th>Bindings</th><th>Rows</th><th>Time</th></th></thead>';

	$html .= '<tbody>';

	foreach(Db::profile() as $row) {
		$html .= '<tr><td>' . $row['sql'] . '</td><td>' . implode(', ', $row['binds']) . '</td><td>' . $row['rows'] . '</td><td>' . $row['time'] . '</td></tr>';
		$total += $row['time'];
	}

	$html .= '</tbody>';

	$html .= '<tfoot>';
	$html .= '<tr><td colspan="3"><strong>Query Time</strong></td><td>' . round($total, 4) . '</td></tr>';
	$html .= '<tr><td colspan="3"><strong>Execution Time</strong></td><td>' . execution_time() . '</td></tr>';
	$html .= '<tr><td colspan="3"><strong>Memory Usage</strong></td><td>' . memory_usage() . 'Kb</td></tr>';
	$html .= '</tfoot>';

	$html .= '</table>';

	return $html;
}

/**
	Lang helper
*/
function __($line, $default = 'No language replacement') {
	return Lang::line($line, $default);
}