calendar-API-tutorial/google-calendar-api.php at main · ondrejtech/calendar-API-tutorial · GitHub

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
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
<?php

class GoogleCalendarApi
{
	public function GetAccessToken($client_id, $redirect_uri, $client_secret, $code) {
		$url = 'https://accounts.google.com/o/oauth2/token';

		$curlPost = 'client_id=' . $client_id . '&redirect_uri=' . $redirect_uri . '&client_secret=' . $client_secret . '&code='. $code . '&grant_type=authorization_code';
		$ch = curl_init();
		curl_setopt($ch, CURLOPT_URL, $url);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
		curl_setopt($ch, CURLOPT_POST, 1);
		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
		curl_setopt($ch, CURLOPT_POSTFIELDS, $curlPost);
		$data = json_decode(curl_exec($ch), true);
		$http_code = curl_getinfo($ch,CURLINFO_HTTP_CODE);
		if($http_code != 200)
			throw new Exception('Error : Failed to receieve access token');

		return $data;
	}

	public function GetUserCalendarTimezone($access_token) {
		$url_settings = 'https://www.googleapis.com/calendar/v3/users/me/settings/timezone';

		$ch = curl_init();
		curl_setopt($ch, CURLOPT_URL, $url_settings);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
		curl_setopt($ch, CURLOPT_HTTPHEADER, array('Authorization: Bearer '. $access_token));
		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
		$data = json_decode(curl_exec($ch), true); //echo '<pre>';print_r($data);echo '</pre>';
		$http_code = curl_getinfo($ch,CURLINFO_HTTP_CODE);
		if($http_code != 200)
			throw new Exception('Error : Failed to get timezone');

		return $data['value'];
	}

	public function GetCalendarsList($access_token) {
		$url_parameters = array();

		$url_parameters['fields'] = 'items(id,summary,timeZone)';
		$url_parameters['minAccessRole'] = 'owner';

		$url_calendars = 'https://www.googleapis.com/calendar/v3/users/me/calendarList?'. http_build_query($url_parameters);

		$ch = curl_init();
		curl_setopt($ch, CURLOPT_URL, $url_calendars);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
		curl_setopt($ch, CURLOPT_HTTPHEADER, array('Authorization: Bearer '. $access_token));
		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
		$data = json_decode(curl_exec($ch), true); //echo '<pre>';print_r($data);echo '</pre>';
		$http_code = curl_getinfo($ch,CURLINFO_HTTP_CODE);
		if($http_code != 200)
			throw new Exception('Error : Failed to get calendars list');

		return $data['items'];
	}

	// need to add repeat argument here
	public function CreateCalendarEvent($calendar_id, $summary, $all_day, $recurrence, $recurrence_end, $event_time, $event_timezone, $access_token) {
		$url_events = 'https://www.googleapis.com/calendar/v3/calendars/' . $calendar_id . '/events';

		$curlPost = array('summary' => $summary); // event title

		// if event is an all day event or not
		if($all_day == 1) {
			$curlPost['start'] = array('date' => $event_time['event_date']);
			$curlPost['end'] = array('date' => $event_time['event_date']);
		}
		else {
			$curlPost['start'] = array('dateTime' => $event_time['start_time'], 'timeZone' => $event_timezone);
			$curlPost['end'] = array('dateTime' => $event_time['end_time'], 'timeZone' => $event_timezone);
		}

		// if event repeats or not
		if ($recurrence == 1) {
			// repeats weekly until XXXX
			// RRULE:FREQ=WEEKLY;UNTIL=XXXX

			$curlPost['recurrence'] = array("RRULE:FREQ=WEEKLY;UNTIL=" . str_replace('-', '', $recurrence_end) . ";" );
		}


		$ch = curl_init(); // Initializes a new session and return a cURL handle
		curl_setopt($ch, CURLOPT_URL, $url_events);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); // return the transfer as a string of the return value of curl_exec() instead of outputting it directly.
		curl_setopt($ch, CURLOPT_POST, 1); // http post
		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); // stop cURL from verifying the peer's certificate
		curl_setopt($ch, CURLOPT_HTTPHEADER, array('Authorization: Bearer '. $access_token, 'Content-Type: application/json'));
		curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($curlPost));
		$data = json_decode(curl_exec($ch), true);
		$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
		if($http_code != 200)
			throw new Exception('Error : Failed to create event');

		return $data['id'];
	}

	public function UpdateCalendarEvent($event_id, $calendar_id, $summary, $all_day, $event_time, $event_timezone, $access_token) {
		$url_events = 'https://www.googleapis.com/calendar/v3/calendars/' . $calendar_id . '/events/' . $event_id;

		$curlPost = array('summary' => $summary);
		if($all_day == 1) {
			$curlPost['start'] = array('date' => $event_time['event_date']);
			$curlPost['end'] = array('date' => $event_time['event_date']);
		}
		else {
			$curlPost['start'] = array('dateTime' => $event_time['start_time'], 'timeZone' => $event_timezone);
			$curlPost['end'] = array('dateTime' => $event_time['end_time'], 'timeZone' => $event_timezone);
		}
		$ch = curl_init();
		curl_setopt($ch, CURLOPT_URL, $url_events);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
		curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PUT');
		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
		curl_setopt($ch, CURLOPT_HTTPHEADER, array('Authorization: Bearer '. $access_token, 'Content-Type: application/json'));
		curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($curlPost));
		$data = json_decode(curl_exec($ch), true);
		$http_code = curl_getinfo($ch,CURLINFO_HTTP_CODE);
		if($http_code != 200)
			throw new Exception('Error : Failed to update event');
	}

	public function DeleteCalendarEvent($event_id, $calendar_id, $access_token) {
		$url_events = 'https://www.googleapis.com/calendar/v3/calendars/' . $calendar_id . '/events/' . $event_id;

		$ch = curl_init();
		curl_setopt($ch, CURLOPT_URL, $url_events);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
		curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'DELETE');
		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
		curl_setopt($ch, CURLOPT_HTTPHEADER, array('Authorization: Bearer '. $access_token, 'Content-Type: application/json'));
		$data = json_decode(curl_exec($ch), true);
		$http_code = curl_getinfo($ch,CURLINFO_HTTP_CODE);
		if($http_code != 204)
			throw new Exception('Error : Failed to delete event');
	}
}

?>