xref: /plugin/statistics/script.js (revision 154d9d5150ebe82c0ece943f7e42b6af1bf58d68) 
1/* globals JSINFO, DOKU_BASE, jQuery */
2
3/**
4 * Statistics script
5 */
6const plugin_statistics = {
7    data: {},
8
9    /**
10     * initialize the script
11     */
12    init: function () {
13
14        // load visitor cookie
15        const now = new Date();
16        let uid = DokuCookie.getValue('plgstats');
17        if (!uid) {
18            uid = now.getTime() + '-' + Math.floor(Math.random() * 32000);
19            DokuCookie.setValue('plgstats', uid);
20        }
21
22        plugin_statistics.data = {
23            uid: uid,
24            ses: plugin_statistics.get_session(),
25            p: JSINFO['id'],
26            r: document.referrer,
27            sx: screen.width,
28            sy: screen.height,
29            vx: window.innerWidth,
30            vy: window.innerHeight,
31            js: 1,
32            rnd: now.getTime()
33        };
34
35        // log access
36        if (JSINFO['act'] === 'show') {
37            plugin_statistics.log_view('v');
38        } else {
39            plugin_statistics.log_view('s');
40        }
41
42        // attach outgoing event
43        jQuery('a.urlextern').click(plugin_statistics.log_external);
44
45        // attach unload event
46        jQuery(window).bind('beforeunload', plugin_statistics.log_exit);
47    },
48
49    /**
50     * Log a view or session
51     *
52     * @param {string} act 'v' = view, 's' = session
53     */
54    log_view: function (act) {
55        const params = jQuery.param(plugin_statistics.data);
56        const img = new Image();
57        img.src = DOKU_BASE + 'lib/plugins/statistics/log.php?do=' + act + '&' + params;
58    },
59
60    /**
61     * Log clicks to external URLs
62     */
63    log_external: function () {
64        const params = jQuery.param(plugin_statistics.data);
65        const url = DOKU_BASE + 'lib/plugins/statistics/log.php?do=o&ol=' + encodeURIComponent(this.href) + '&' + params;
66        navigator.sendBeacon(url);
67        return true;
68    },
69
70    /**
71     * Log any leaving action as session info
72     */
73    log_exit: function () {
74        const params = jQuery.param(plugin_statistics.data);
75
76        const ses = plugin_statistics.get_session();
77        if (ses !== params.ses) return; // session expired a while ago, don't log this anymore
78
79        const url = DOKU_BASE + 'lib/plugins/statistics/log.php?do=s&' + params;
80        navigator.sendBeacon(url);
81    },
82
83    /**
84     * get current session identifier
85     *
86     * Auto clears an expired session and creates a new one after 15 min idle time
87     *
88     * @returns {string}
89     */
90    get_session: function () {
91        const now = new Date();
92
93        // load session cookie
94        let ses = DokuCookie.getValue('plgstatsses');
95        if (ses) {
96            ses = ses.split('-');
97            const time = ses[0];
98            ses = ses[1];
99            if (now.getTime() - time > 15 * 60 * 1000) {
100                ses = ''; // session expired
101            }
102        }
103        // assign new session
104        if (!ses) {
105            //http://stackoverflow.com/a/16693578/172068
106            ses = (Math.random().toString(16) + "000000000").substr(2, 8) +
107                (Math.random().toString(16) + "000000000").substr(2, 8) +
108                (Math.random().toString(16) + "000000000").substr(2, 8) +
109                (Math.random().toString(16) + "000000000").substr(2, 8);
110        }
111        // update session info
112        DokuCookie.setValue('plgstatsses', now.getTime() + '-' + ses);
113
114        return ses;
115    },
116};
117
118
119jQuery(plugin_statistics.init);
120