136 lines
4.0 KiB
PHP
136 lines
4.0 KiB
PHP
<?php
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class Loan {
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private $id = 0;
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private $user = 0;
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private $product = 0;
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private $starttime = 0;
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private $endtime = 0;
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private $returntime = null;
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public static function create_loan($user, $product, $endtime) {
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$status = $product->get_status();
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if($status != 'available') {
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$emsg = '';
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$prod_id = $product->get_id();
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switch($status) {
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case 'on_loan':
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case 'overdue':
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$loan_id = $product->get_active_loan()->get_id();
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$emsg = "Product $prod_id has an active ";
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$emsg .= "loan (id $loan_id) already.";
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break;
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case 'discarded':
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$emsg = "Product $prod_id has been discarded.";
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break;
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case 'service':
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$service_id = $product->get_active_service()->get_id();
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$emsg = "Product $prod_id is on service (id $service_id).";
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break;
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}
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throw new Exception($emsg);
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}
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$now = time();
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$insert = prepare('insert into
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`loan`(`user`, `product`, `starttime`, `endtime`)
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values (?, ?, ?, ?)');
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bind($insert, 'iiii',
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$user->get_id(), $product->get_id(),
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$now, strtotime($endtime . ' 13:00'));
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execute($insert);
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$loan_id = $insert->insert_id;
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return new Loan($loan_id);
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}
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public function __construct($id) {
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$search = prepare('select `id` from `loan`
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where `id`=?');
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bind($search, 'i', $id);
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execute($search);
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$result = result_single($search);
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if($result === null) {
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throw new Exception('Loan does not exist.');
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}
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$this->id = $result['id'];
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$this->update_fields();
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}
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private function update_fields() {
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$get = prepare('select * from `loan` where `id`=?');
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bind($get, 'i', $this->id);
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execute($get);
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$loan = result_single($get);
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$this->user = $loan['user'];
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$this->product = $loan['product'];
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$this->starttime = $loan['starttime'];
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$this->endtime = $loan['endtime'];
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$this->returntime = $loan['returntime'];
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}
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public function get_id() {
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return $this->id;
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}
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public function get_user() {
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return new User($this->user);
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}
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public function get_product() {
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return new Product($this->product);
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}
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public function get_duration($format = true) {
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$style = function($time) {
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return $time;
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};
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if($format) {
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$style = function($time) {
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if($time) {
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return gmdate('Y-m-d', $time);
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}
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return $time;
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};
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}
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return array('start' => $style($this->starttime),
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'end' => $style($this->endtime),
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'end_renew' => $style($this->endtime + 604800), # +1 week
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'return' => $style($this->returntime));
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}
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public function is_active() {
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if($this->returntime === null) {
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return true;
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}
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return false;
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}
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public function extend($time) {
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$ts = strtotime($time . ' 13:00');
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$query = prepare('update `loan` set `endtime`=? where `id`=?');
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bind($query, 'ii', $ts, $this->id);
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execute($query);
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$this->endtime = $ts;
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return true;
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}
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public function end() {
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$now = time();
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$query = prepare('update `loan` set `returntime`=? where `id`=?');
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bind($query, 'ii', $now, $this->id);
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execute($query);
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$this->returntime = $now;
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return true;
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}
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public function is_overdue() {
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if($this->returntime !== null) {
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return false;
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}
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$now = time();
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if($now > $this->endtime) {
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return true;
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}
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return false;
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}
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}
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?>
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