<?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, IFNULL(NULLIF(hostname,''), CONCAT('e', id)) as 'name', uplink_id
//  FROM equipements
//  WHERE equipement_modele_id >= 12
//  AND equipement_modele_id != 47
//  AND date_hs IS NULL");

$res = $mysqli->query("SELECT id, IFNULL(NULLIF(hostname,''), CONCAT('e', id)) as 'name', uplink_id
FROM equipements
WHERE (relais_id IS NOT NULL OR hostname='STG1')
AND date_hs IS NULL");

$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);

// Add the back-bone.
$world = array('name' => 'world', 'children' => array());
$world['children'][] = array(
    'name' => 'Fibre',
    'children' => &$roots
);

// Only add orphans if there is at least one of them to display.
if ($orphans) {
    $world['children'][] = array(
        'name' => 'Orphelins',
        'children' => &$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);