-
Notifications
You must be signed in to change notification settings - Fork 1
/
ContactHandler.php
82 lines (71 loc) · 2.44 KB
/
ContactHandler.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
<?php
require_once("Contact.php");
class ContactHandler {
private static $instance = null;
private $fileName;
private $fileStream;
private $contacts;
private function __construct() {
$this->fileName = "contacts.json";
$this->fileStream = fopen($this->fileName, "r+") or die("Unable to find or open $this->fileName");
$GLOBALS["contactsData"] = json_decode(fread($this->fileStream, filesize($this->fileName)), true);
$this->contacts = array_map(
array: $GLOBALS["contactsData"],
callback: function($contact) {
$contactID = array_search($contact, $GLOBALS["contactsData"]);
return new Contact(
$contactID,
$contact["name"],
$contact["number"],
$contact["e_mail"]
);
}
);
}
public function getContacts() {return $this->contacts;}
public function addContact(Contact $newContact): bool {
array_push($this->contacts, $newContact);
return $this->updateData($this->generateArray());
}
public function updateContact(Contact $updatedContact): bool {
$this->contacts[$updatedContact->getId()] = $updatedContact;
return $this->updateData($this->generateArray());
}
public function removeContact(Contact $oldContact): bool {
$GLOBALS["oldContactId"] = $oldContact->getId();
$contactValues = array_filter(
array: $this->contacts,
callback: function($contact) {
return $contact->getId() != $GLOBALS["oldContactId"];
}
);
$numberOfContacts = count($contactValues);
$contactKeys = range(0, $numberOfContacts - 1, 1);
$this->contacts = $numberOfContacts < 1? [] : array_combine($contactKeys, $contactValues);
return $this->updateData($this->generateArray());
}
public function getTotalContacts(): int {return count($this->contacts);}
private function updateData(array $data): bool {
ftruncate($this->fileStream, 0);
fseek($this->fileStream, 0);
fwrite($this->fileStream, json_encode($data));
return fflush($this->fileStream);
}
private function generateArray(): array {
return array_map(
array: $this->contacts,
callback: function(Contact $contact) {
return array(
"name"=>$contact->getName(),
"number"=>$contact->getNumber(),
"e_mail"=>$contact->getEmail()
);
}
);
}
static function getInstance(): ContactHandler {
self::$instance = self::$instance == null? new ContactHandler():self::$instance;
return self::$instance;
}
public function __destruct() {fclose($this->fileStream);}
}