fix: Remove case sesitivity from query params for integration captures (#1031)

Author: mmustafa-tse

src/utils.ts

@@ -274,6 +274,7 @@ const queryStringParser = (
 ): Dictionary<string> => {
     let urlParams: URLSearchParams | URLSearchParamsFallback;
     let results: Dictionary<string> = {};
+    let lowerCaseUrlParams: Dictionary<string> = {};
 
     if (!url) return results;
 
@@ -284,13 +285,15 @@ const queryStringParser = (
         urlParams = queryStringParserFallback(url);
     }
 
+    urlParams.forEach((value, key) => {
+        lowerCaseUrlParams[key.toLowerCase()] = value;
+    });
+
     if (isEmpty(keys)) {
-        urlParams.forEach((value, key) => {
-            results[key] = value;
-        });
+        return lowerCaseUrlParams;
     } else {
         keys.forEach(key => {
-            const value = urlParams.get(key);
+            const value = lowerCaseUrlParams[key.toLowerCase()];
             if (value) {
                 results[key] = value;
             }

test/jest/integration-capture.spec.ts

@@ -145,6 +145,20 @@ describe('Integration Capture', () => {
                     ScCid: '1234',
                 });
             });
+
+            it('should capture Snapchat specific click ids without being case sensitive', () => {
+                const url = new URL('https://www.example.com/?sccid=1234');
+
+                window.location.href = url.href;
+                window.location.search = url.search;
+
+                const integrationCapture = new IntegrationCapture();
+                integrationCapture.capture();
+
+                expect(integrationCapture.clickIds).toEqual({
+                    ScCid: '1234',
+                });
+            });
         });
 
         describe('Facebook Click Ids', () => {

test/jest/utils.spec.ts

@@ -173,6 +173,23 @@ describe('Utils', () => {
 
                 expect(queryStringParser(malformedUrl, keys)).toEqual(expectedResult);
             });
+
+            it('should handle different params case sensitivity and return them as lowercased params', () => {
+                const url = 'https://www.example.com?FoO=bar&bAz=qux&NARF=poit'
+                const keys = [
+                    'foo',
+                    'baz',
+                    'narf',
+                ];
+
+                const expectedResult = {
+                    foo: 'bar',
+                    narf: 'poit',
+                    baz: 'qux',
+                };
+
+                expect(queryStringParser(url, keys)).toEqual(expectedResult);
+            });
         });
     });