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<?php
/**
 * Copyright 2016 Ludovic Pouzenc <ludovic@pouzenc.fr>
 * Copyright 2016 Nicolas Goaziou <mail@nicolasgoaziou.fr>
 * 
 * This file is part of CHD Gestion.
 * 
 * CHD Gestion is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * CHD Gestion is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with CHD Gestion.  If not, see <http://www.gnu.org/licenses/>.
**/

include_once('inc/config.php');
$mysqli = new mysqli($db_config['host'], $db_config['username'], $db_config['password'], $db_config['database']);
if (mysqli_connect_errno()) {
	die(mysqli_connect_error());
}
unset($db_config);
$mysqli->set_charset("utf8") or die($mysqli->error);

$res = $mysqli->query("SELECT id, CONCAT('e', id) as 'name', uplink_id FROM equipements");

$roots = array();
$childrens = array();
while ( $row = $res->fetch_assoc() ) {
	if ( ! array_key_exists($row['id'], $childrens) ) {
		$childrens[$row['id']] = array();
	}
	$row['children'] = &$childrens[$row['id']];
	$uplink_id = $row['uplink_id'];
	unset($row['uplink_id']);
	if ( $uplink_id !== NULL ) {
		$childrens[$uplink_id][] = $row;
	} else {
		$roots[] = $row;
	}
}
foreach ( $childrens as &$arr ) {
	foreach ( $arr as &$node ) {
		if ( array_key_exists('children', $node) && count($node['children']) === 0 ) {
			unset($node['children']);
			$node['size'] = 2000;
		}
	}
}
$orphans = array();
foreach ( $roots as $k => &$node ) {
	if ( array_key_exists('children', $node) && count($node['children']) === 0 ) {
		unset($node['children']);
		$node['size'] = 1000;
		$orphans[$k] = &$node;
	}
}

// Remove orphans from $roots then rekey
foreach ( array_keys($orphans) as $k ) {
		unset($roots[$k]);
}
$roots = array_values($roots);
$orphans = array_values($orphans);

$world = array(
	'name' => 'world',
	'children' => array (
		array (
			'name' => 'roots',
			'children' => &$roots
		),
		array (
			'name' => 'orphans',
			'children' => &$orphans
		),
	),
);
/*
echo "<pre>\n";
print_r($world);
 */
header('Content-type: application/json');
echo json_encode($world, JSON_NUMERIC_CHECK | JSON_PRETTY_PRINT | JSON_PARTIAL_OUTPUT_ON_ERROR);