Add the ability to "inject" location into /fides.js bundles and cache responses for one hour

CHANGELOG.md

@@ -24,6 +24,7 @@ The types of changes are:
 - Privacy Experience Bulk Create, Bulk Update, and Detail Endpoints [#3185](https://github.com/ethyca/fides/pull/3185)
 - Initial privacy experience UI [#3186](https://github.com/ethyca/fides/pull/3186)
 - Access and erasure support for OneSignal [#3199](https://github.com/ethyca/fides/pull/3199)
+- Add the ability to "inject" location into `/fides.js` bundles and cache responses for one hour [#3272](https://github.com/ethyca/fides/pull/3272)
 
 ### Changed
 

clients/privacy-center/__tests__/common/location.test.ts

@@ -0,0 +1,108 @@
+import { createRequest } from "node-mocks-http";
+
+import { getLocation } from "~/common/location";
+
+describe("getLocation", () => {
+  describe("when using location headers", () => {
+    it("returns location data from country & region headers", () => {
+      const req = createRequest({
+        url: "https://privacy.example.com/fides.js",
+        headers: {
+          "CloudFront-Viewer-Country": "US",
+          "CloudFront-Viewer-Country-Region": "NY",
+        },
+      });
+      const location = getLocation(req);
+      expect(location).toEqual({
+        country: "US",
+        location: "US-NY",
+        region: "NY",
+      });
+    });
+
+    it("returns location data from country header", () => {
+      const req = createRequest({
+        url: "https://privacy.example.com/fides.js",
+        headers: {
+          "CloudFront-Viewer-Country": "FR",
+        },
+      });
+      const location = getLocation(req);
+      expect(location).toEqual({
+        country: "FR",
+        location: "FR",
+      });
+    });
+
+    it("ignores only region headers", () => {
+      const req = createRequest({
+        url: "https://privacy.example.com/fides.js",
+        headers: {
+          "CloudFront-Viewer-Country-Region": "NY",
+        },
+      });
+      const location = getLocation(req);
+      expect(location).toBeUndefined();
+    });
+
+    it("handles invalid location headers", () => {
+      const req = createRequest({
+        url: "https://privacy.example.com/fides.js",
+        headers: {
+          "CloudFront-Viewer-Country": "Magicland",
+        },
+      });
+      const location = getLocation(req);
+      expect(location).toBeUndefined();
+    });
+  });
+
+  describe("when using ?location query param", () => {
+    it("returns location data from query param", () => {
+      const req = createRequest({
+        url: "https://privacy.example.com/fides.js?location=FR-IDF",
+      });
+      const location = getLocation(req);
+      expect(location).toEqual({
+        country: "FR",
+        location: "FR-IDF",
+        region: "IDF",
+      });
+    });
+
+    it("handles invalid location query param", () => {
+      const req = createRequest({
+        url: "https://privacy.example.com/fides.js?location=America",
+      });
+      const location = getLocation(req);
+      expect(location).toBeUndefined();
+    });
+  });
+
+  describe("when using both headers and query param", () => {
+    it("overrides headers with explicit location query param", () => {
+      const req = createRequest({
+        url: "https://privacy.example.com/fides.js?location=US-CA",
+        headers: {
+          "CloudFront-Viewer-Country": "FR",
+        },
+      });
+      const location = getLocation(req);
+      expect(location).toEqual({
+        country: "US",
+        location: "US-CA",
+        region: "CA",
+      });
+    });
+  });
+
+  describe("when using neither headers nor query param", () => {
+    it("returns undefined location", () => {
+      const req = createRequest({
+        url: "https://privacy.example.com/fides.js",
+      });
+      const location = getLocation(req);
+      expect(location).toBeUndefined();
+    });
+  });
+});