UTM

odoo/upsell.html

@@ -342,6 +342,41 @@
                 powerhouse: 5,
             };
 
+            // ── UTM tracking (source / medium / campaign) ─────────────────────────────
+            const UTM_KEYS = ["source", "medium", "campaign"];
+
+            function getCookie(name) {
+                const match = document.cookie.match(new RegExp("(^| )" + name + "=([^;]+)"));
+                return match ? decodeURIComponent(match[2]) : null;
+            }
+
+            function setCookie(name, value, days) {
+                const date = new Date();
+                date.setTime(date.getTime() + days * 24 * 60 * 60 * 1000);
+                document.cookie =
+                    name + "=" + encodeURIComponent(value) +
+                    "; expires=" + date.toUTCString() +
+                    "; path=/; SameSite=Lax";
+            }
+
+            UTM_KEYS.forEach(function (key) {
+                const val = params.get("utm_" + key);
+                if (val) setCookie("utm_" + key, val, 90);
+            });
+
+            function appendUTM(form) {
+                UTM_KEYS.forEach(function (key) {
+                    const val = getCookie("utm_" + key);
+                    if (val) {
+                        const input = document.createElement("input");
+                        input.type = "hidden";
+                        input.name = "utm_" + key;
+                        input.value = val;
+                        form.appendChild(input);
+                    }
+                });
+            }
+
             // ── Buy handler ───────────────────────────────────────────────────────────
             function buyProduct(productId) {
                 if (!uuid) {
@@ -369,6 +404,7 @@
                 clear.name = "clear";
                 clear.value = "1";
                 form.appendChild(clear);
+                appendUTM(form);
                 document.body.appendChild(form);
                 form.submit();
                 document.body.removeChild(form);