https://www.avery.com/app/js/dy-impression-handler.js

1// * this handler only runs after the Osano cookie consent being granted, otherwise, ignored. 
2function getCookie(name) {
3    const pattern = new RegExp(
4    '(?:^|; )' +
5        name.replace(/([.$?*|{}()[\]\\/+^])/g, '\\$1') +
6        '=([^;]*)'
7    );
8    const match = document.cookie.match(pattern);
9    return match ? decodeURIComponent(match[1]) : null;
10}
11
12// polling fetching dy cookies 
13function waitForDYCookie({ interval = 50, timeout = 5000 } = {}) {
14    return new Promise((resolve, reject) => {
15        const start = Date.now();
16        (function check() {
17            const dyid = getCookie("_dyid");
18            const dyjsession = getCookie("_dyjsession");
19            if (dyid && dyjsession) return resolve({dyid, dyjsession});
20            if (Date.now() - start > timeout) {
21                return reject(new Error("Timeout: DY cookies did not appear after consent."));
22            }
23            setTimeout(check, interval);
24        })();
25    });
26}
27
28function fireImpression() {
29    if (sessionStorage.getItem('dyImpressionFired') === 'true') {
30        return;
31    }
32    waitForDYCookie().then(({ dyid, dyjsession }) => {
33        // Fire impression request
34        sessionStorage.setItem('dyImpressionFired', 'true');
35        Object.values(window.DY_CAMPAIGN.data).forEach((campaignData) => {
36            fetch("/api/dy/engagement", {
37                method: "POST",
38                headers: { "Content-Type": "application/json" },
39                body: JSON.stringify({
40                    user: { 
41                        "active_consent_accepted": true,
42                        "dyid": dyid,
43                    },
44                    session: { dy: dyjsession },
45                    engagements: [{
46                        type: "IMP",
47                        variation: [campaignData.variation.id],
48                        decisionId: campaignData.choice.decisionId
49                    }]
50                }),
51            }).catch((err) => console.error("Impression error:", err));
52        })
53    }).catch((err) => console.error(err));
54}
55
56// DY cookies will be set once the personalization consent is granted
57// For new visitors (or session)
58Osano?.cm?.on("osano-cm-consent-saved", (consent) => {
59  if (!consent?.PERSONALIZATION) return;
60
61  const hasDyCampaign = () =>
62    window.DY_CAMPAIGN && typeof window.DY_CAMPAIGN === "object" && Object.keys(window.DY_CAMPAIGN).length > 0;
63
64  if (hasDyCampaign()) {
65    fireImpression();
66    return;
67  }
68
69  // start polling if DY campaign data is not available
70  const dyCampaignDataTimeout = setTimeout(() => {
71    clearInterval(dyCampaignDataInterval);
72    if (hasDyCampaign()) {
73        console.error("Impression failed: Timeout waiting for window.DY_CAMPAIGN.");
74    } 
75  }, 3000); // Wait for a maximum of 3 seconds
76
77  const dyCampaignDataInterval = setInterval(() => {
78    if (hasDyCampaign()) {
79      clearInterval(dyCampaignDataInterval);
80      clearTimeout(dyCampaignDataTimeout);
81      fireImpression();
82    }
83  }, 100);
84});