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Introducing events - loans are now events, and there is also a service event type

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This commit is contained in:
Erik Thuning 2019-07-23 15:26:27 +02:00
parent caca5dddbd
commit adc8d36bb0
4 changed files with 161 additions and 180 deletions

31
database.sql

@ -75,29 +75,34 @@ create table `user` (
) character set utf8mb4,
collate utf8mb4_unicode_ci;
create table `loan` (
create table `event` (
`id` bigint(20) not null auto_increment,
primary key(`id`),
`user` bigint(20) not null,
constraint `l_f_user`
foreign key(`user`) references `user`(`id`),
`product` bigint(20) not null,
constraint `l_f_product`
constraint `e_f_product`
foreign key(`product`) references `product`(`id`),
`starttime` bigint(20) not null,
`endtime` bigint(20) not null,
`returntime` bigint(20) default null
) character set utf8mb4,
collate utf8mb4_unicode_ci;
create table `loan` (
`event` bigint(20) not null,
primary key(`event`),
constraint `l_f_event`
foreign key(`event`) references `event`(`id`),
`user` bigint(20) not null,
constraint `l_f_user`
foreign key(`user`) references `user`(`id`),
`endtime` bigint(20) not null
) character set utf8mb4,
collate utf8mb4_unicode_ci;
create table `service` (
`id` bigint(20) not null auto_increment,
primary key(`id`),
`product` bigint(20) not null,
constraint `s_f_product`
foreign key(`product`) references `product`(`id`),
`starttime` bigint(20) not null,
`returntime` bigint(20) default null
`event` bigint(20) not null,
primary key(`event`),
constraint `s_f_event`
foreign key(`event`) references `event`(`id`)
) character set utf8mb4,
collate utf8mb4_unicode_ci;

104
include/Event.php Normal file

@ -0,0 +1,104 @@
<?php
class Event {
protected $id = 0;
protected $product = 0;
protected $starttime = 0;
protected $returntime = null;
protected static function create_event($product) {
$status = $product->get_status();
if($status != 'available') {
$emsg = '';
$prod_id = $product->get_id();
switch($status) {
case 'on_loan':
case 'overdue':
$loan_id = $product->get_active_loan()->get_id();
$emsg = "Product $prod_id has an active "
. "loan (id $loan_id).";
break;
case 'discarded':
$emsg = "Product $prod_id has been discarded.";
break;
case 'service':
$service_id = $product->get_active_service()->get_id();
$emsg = "Product $prod_id is on service "
. "(id $service_id).";
break;
}
throw new Exception($emsg);
}
$now = time();
$insert = prepare('insert into
`event`(`product`, `starttime`)
values (?, ?)');
bind($insert, 'ii', $product->get_id(), $now);
execute($insert);
$event_id = $insert->insert_id;
return new Event($event_id);
}
public function __construct($id) {
$search = prepare('select `id` from `event`
where `id`=?');
bind($search, 'i', $id);
execute($search);
$result = result_single($search);
if($result === null) {
throw new Exception('Event does not exist.');
}
$this->id = $result['id'];
$this->update_fields();
}
protected function update_fields() {
$get = prepare('select * from `event` where `id`=?');
bind($get, 'i', $this->id);
execute($get);
$result = result_single($get);
$this->product = $result['product'];
$this->starttime = $result['starttime'];
$this->returntime = $result['returntime'];
}
public function get_id() {
return $this->id;
}
public function get_product() {
return new Product($this->product);
}
public function get_starttime() {
return $this->starttime;
}
public function get_returntime() {
return $this->returntime;
}
public function is_active() {
if($this->returntime === null) {
return true;
}
return false;
}
public function get_status() {
$class = strtolower(get_class($this));
if($this->is_active()) {
return 'active_' . $class;
}
return 'inactive_' . $class;
}
public function end() {
$now = time();
$query = prepare('update `event` set `returntime`=? where `id`=?');
bind($query, 'ii', $now, $this->id);
execute($query);
$this->returntime = $now;
return true;
}
}
?>

103
include/Loan.php

@ -1,111 +1,52 @@
<?php
class Loan {
private $id = 0;
class Loan extends Event {
private $user = 0;
private $product = 0;
private $starttime = 0;
private $endtime = 0;
private $returntime = null;
public static function create_loan($user, $product, $endtime) {
$status = $product->get_status();
if($status != 'available') {
$emsg = '';
$prod_id = $product->get_id();
switch($status) {
case 'on_loan':
case 'overdue':
$loan_id = $product->get_active_loan()->get_id();
$emsg = "Product $prod_id has an active ";
$emsg .= "loan (id $loan_id) already.";
break;
case 'discarded':
$emsg = "Product $prod_id has been discarded.";
break;
case 'service':
$service_id = $product->get_active_service()->get_id();
$emsg = "Product $prod_id is on service (id $service_id).";
break;
}
throw new Exception($emsg);
}
$now = time();
$insert = prepare('insert into
`loan`(`user`, `product`, `starttime`, `endtime`)
values (?, ?, ?, ?)');
bind($insert, 'iiii',
$user->get_id(), $product->get_id(),
$now, strtotime($endtime . ' 13:00'));
begin_trans();
$event = parent::create_event($product);
$event_id = $event->get_id();
$insert = prepare('insert into `loan`(`user`, `endtime`) values (?, ?)');
bind($insert, 'ii', $user->get_id(), strtotime($endtime . ' 13:00'));
execute($insert);
$loan_id = $insert->insert_id;
return new Loan($loan_id);
commit_trans();
return new Loan($event_id);
}
public function __construct($id) {
$search = prepare('select `id` from `loan`
where `id`=?');
parent::__construct($id);
$search = prepare('select * from `loan` where `event`=?');
bind($search, 'i', $id);
execute($search);
$result = result_single($search);
if($result === null) {
throw new Exception('Loan does not exist.');
}
$this->id = $result['id'];
$this->update_fields();
}
private function update_fields() {
$get = prepare('select * from `loan` where `id`=?');
protected function update_fields() {
parent::update_fields();
$get = prepare('select * from `loan` where `event`=?');
bind($get, 'i', $this->id);
execute($get);
$loan = result_single($get);
$this->user = $loan['user'];
$this->product = $loan['product'];
$this->starttime = $loan['starttime'];
$this->endtime = $loan['endtime'];
$this->returntime = $loan['returntime'];
}
public function get_id() {
return $this->id;
}
public function get_user() {
return new User($this->user);
}
public function get_product() {
return new Product($this->product);
}
public function get_duration($format = true) {
$style = function($time) {
return $time;
};
if($format) {
$style = function($time) {
if($time) {
return gmdate('Y-m-d', $time);
}
return $time;
};
}
return array('start' => $style($this->starttime),
'end' => $style($this->endtime),
'end_renew' => $style($this->endtime + 604800), # +1 week
'return' => $style($this->returntime));
}
public function is_active() {
if($this->returntime === null) {
return true;
}
return false;
public function get_endtime() {
return $this->endtime;
}
public function extend($time) {
$ts = strtotime($time . ' 13:00');
$query = prepare('update `loan` set `endtime`=? where `id`=?');
$query = prepare('update `loan` set `endtime`=? where `event`=?');
bind($query, 'ii', $ts, $this->id);
execute($query);
$this->endtime = $ts;
@ -114,7 +55,7 @@ class Loan {
public function end() {
$now = time();
$query = prepare('update `loan` set `returntime`=? where `id`=?');
$query = prepare('update `event` set `returntime`=? where `id`=?');
bind($query, 'ii', $now, $this->id);
execute($query);
$this->returntime = $now;
@ -131,5 +72,15 @@ class Loan {
}
return false;
}
public function get_status() {
if($this->is_overdue()) {
return 'overdue_loan';
}
if($this->is_active()) {
return 'active_loan';
}
return 'inactive_loan';
}
}
?>

103
include/Service.php

@ -1,109 +1,30 @@
<?php
class Service {
private $id = 0;
private $product = 0;
private $starttime = 0;
private $returntime = null;
class Service extends Event {
public static function create_service($product) {
$status = $product->get_status();
if($status != 'available') {
$emsg = '';
$prod_id = $product->get_id();
switch($status) {
case 'on_loan':
case 'overdue':
$loan_id = $product->get_active_loan()->get_id();
$emsg = "Product $prod_id has an active ";
$emsg .= "loan (id $loan_id).";
break;
case 'discarded':
$emsg = "Product $prod_id has been discarded.";
break;
case 'service':
$service_id = $product->get_active_service()->get_id();
$emsg = "Product $prod_id is on service "
."(id $service_id) already.";
break;
}
throw new Exception($emsg);
}
$now = time();
$insert = prepare('insert into
`service`(`product`, `starttime`)
values (?, ?)');
bind($insert, 'ii', $product->get_id(), $now);
begin_trans();
$event = parent::create_event($product);
$event_id = $event->get_id();
$insert = prepare('insert into `service`(`event`) values (?)');
bind($insert, 'i', $event_id);
execute($insert);
$service_id = $insert->insert_id;
return new Loan($service_id);
commit_trans();
return new Service($event_id);
}
public function __construct($id) {
$search = prepare('select `id` from `service`
where `id`=?');
parent::__construct($id);
$search = prepare('select * from `service` where `event`=?');
bind($search, 'i', $id);
execute($search);
$result = result_single($search);
if($result === null) {
throw new Exception('Service does not exist.');
}
$this->id = $result['id'];
$this->update_fields();
}
private function update_fields() {
$get = prepare('select * from `service` where `id`=?');
bind($get, 'i', $this->id);
execute($get);
$loan = result_single($get);
$this->product = $loan['product'];
$this->starttime = $loan['starttime'];
$this->returntime = $loan['returntime'];
}
public function get_id() {
return $this->id;
}
public function get_user() {
return 'Service';
}
public function get_product() {
return new Product($this->product);
}
public function get_duration($format = true) {
$style = function($time) {
return $time;
};
if($format) {
$style = function($time) {
if($time) {
return gmdate('Y-m-d', $time);
}
return $time;
};
}
return array('start' => $style($this->starttime),
'end' => '',
'return' => $style($this->returntime));
}
public function is_active() {
if($this->returntime === null) {
return true;
}
return false;
}
public function end() {
$now = time();
$query = prepare('update `service` set `returntime`=? where `id`=?');
bind($query, 'ii', $now, $this->id);
execute($query);
$this->returntime = $now;
return true;
protected function update_fields() {
parent::update_fields();
}
}
?>