fix: posthog consistent event properties

apps/nextjs/src/lib/analytics/helpers.test.ts

@@ -0,0 +1,123 @@
+import { parseKeyStage } from "./helpers";
+
+const testKeyStageMap: Record<
+  string,
+  "ks1" | "ks2" | "ks3" | "ks4" | "ks5" | "early-years-foundation-stage"
+> = {
+  "1-2": "ks1",
+  "10": "ks4",
+  "12": "ks5",
+  "6": "ks2",
+  "A Level": "ks5",
+  "A level": "ks5",
+  "A-Level": "ks5",
+  "A-level": "ks5",
+  ALevel: "ks5",
+  EYFS: "early-years-foundation-stage",
+  "EYFS SEN": "early-years-foundation-stage",
+  "Early Years": "early-years-foundation-stage",
+  "Early Years Foundation Stage": "early-years-foundation-stage",
+  "Early Years Foundation Stage (EYFS)": "early-years-foundation-stage",
+  "Foundation Stage": "early-years-foundation-stage",
+  GCSE: "ks4",
+  "GCSE Higher": "ks4",
+  "GCSE OCR": "ks4",
+  KS1: "ks1",
+  KS2: "ks2",
+  "KS2 Upper": "ks2",
+  "KS2 Year 4": "ks2",
+  "KS2 Year 5": "ks2",
+  KS3: "ks3",
+  "KS3 Geography": "ks3",
+  "KS3 Geography L1 . Mrs Karaphillides": "ks3",
+  "KS3 and KS4": "ks3",
+  "KS3,4": "ks3",
+  "KS3-4": "ks3",
+  KS4: "ks4",
+  "KS4 and KS5": "ks4",
+  KS5: "ks5",
+  "Key Stage 1": "ks1",
+  "Key Stage 1 & 2": "ks1",
+  "Key Stage 1 and Key Stage 2": "ks1",
+  "Key Stage 1/2": "ks1",
+  "Key Stage 2": "ks2",
+  "Key Stage 2 Year 4": "ks2",
+  "Key Stage 2, Year 3": "ks2",
+  "Key Stage 2/3": "ks2",
+  "Key Stage 3": "ks3",
+  "Key Stage 3 & 4": "ks3",
+  "Key Stage 3, 4": "ks3",
+  "Key Stage 3, Year 9": "ks3",
+  "Key Stage 4": "ks4",
+  "Key Stage 4 (Year 11, GCSE)": "ks4",
+  "Key Stage 5": "ks5",
+  "Key Stage 5 (AS Level)": "ks5",
+  "Key Stage 5+": "ks5",
+  Reception: "early-years-foundation-stage",
+  "Year 1": "ks1",
+  "Year 1/2": "ks1",
+  "Year 10": "ks4",
+  "Year 11": "ks4",
+  "Year 12": "ks5",
+  "Year 2": "ks1",
+  "Year 3": "ks2",
+  "Year 3 & 4": "ks2",
+  "Year 4": "ks2",
+  "Year 5": "ks2",
+  "Year 5 - Key Stage 2": "ks2",
+  "Year 6": "ks2",
+  "Year 7": "ks3",
+  "Year 8": "ks3",
+  "Year 9": "ks3",
+  "early-years": "early-years-foundation-stage",
+  "early-years-foundation-stage": "early-years-foundation-stage",
+  "early-years-foundation-stage, key-stage-1, key-stage-2":
+    "early-years-foundation-stage",
+  eyfs: "early-years-foundation-stage",
+  "key stage 3": "ks3",
+  "key stage 4": "ks4",
+  "key-stage-1": "ks1",
+  "key-stage-1 and key-stage-2": "ks1",
+  "key-stage-1, key-stage-2": "ks1",
+  "key-stage-2": "ks2",
+  "key-stage-2 Year 4": "ks2",
+  "key-stage-2 year 6": "ks2",
+  "key-stage-2, key-stage-3": "ks2",
+  "key-stage-3": "ks3",
+  "key-stage-3, key-stage-4": "ks3",
+  "key-stage-3|key-stage-4": "ks3",
+  "key-stage-4": "ks4",
+  "key-stage-5": "ks5",
+  "sixth form": "ks5",
+  "year 1": "ks1",
+  "year 4": "ks2",
+  "year-3": "ks2",
+  "year-4": "ks2",
+  "year-5": "ks2",
+  "year-7": "ks3",
+  "year-8": "ks3",
+  "year-9": "ks3",
+};
+
+describe("Analytics helpers", () => {
+  describe("parseKeyStage", () => {
+    test("Converts 'Key stage {n}' to 'ks{n}'", () => {
+      expect(parseKeyStage("Key stage 3")).toBe("ks3");
+    });
+    test("Converts 'key-stage-{n}' to 'ks{n}'", () => {
+      expect(parseKeyStage("key-stage-2")).toBe("ks2");
+    });
+    test("Converts 'KS{n}' to 'ks{n}'", () => {
+      expect(parseKeyStage("KS1")).toBe("ks1");
+    });
+    test("Converts '{n} to 'ks{n}'", () => {
+      expect(parseKeyStage("1")).toBe("ks1");
+    });
+    test.each(Object.entries(testKeyStageMap))(
+      "Converts '%s' to '%s'",
+      (input, expected) => {
+        expect(parseKeyStage(input)).toBe(expected);
+      },
+    );
+  });
+});

apps/nextjs/src/lib/analytics/helpers.ts

@@ -34,7 +34,7 @@ export function getLessonTrackingProps({
     product: "ai lesson assistant",
     lessonPlanTitle: lesson.title ?? "",
     subjectSlug: lesson.subject ?? "",
-    keyStageSlug: lesson.keyStage ?? "",
+    keyStageSlug: parseKeyStage(lesson.keyStage ?? ""),
   };
 }
 
@@ -71,3 +71,96 @@ export function getModerationTypes(
     })
     .filter(isTruthy);
 }
+
+type KeyStage =
+  | "ks1"
+  | "ks2"
+  | "ks3"
+  | "ks4"
+  | "ks5"
+  | "early-years-foundation-stage";
+
+/**
+ * If a string starts with any of the keys in this map, it will be mapped to the
+ * corresponding value.
+ */
+const startKeyStageMap: Record<string, KeyStage> = {
+  ks1: "ks1",
+  ks2: "ks2",
+  ks3: "ks3",
+  ks4: "ks4",
+  ks5: "ks5",
+  key_stage_1: "ks1",
+  key_stage_2: "ks2",
+  key_stage_3: "ks3",
+  key_stage_4: "ks4",
+  key_stage_5: "ks5",
+  eyfs: "early-years-foundation-stage",
+  early_years: "early-years-foundation-stage",
+  foundation_stage: "early-years-foundation-stage",
+  reception: "early-years-foundation-stage",
+  sixth_form: "ks5",
+  gcse: "ks4",
+  a_level: "ks5",
+  alevel: "ks5",
+  year_2: "ks1",
+  year_3: "ks2",
+  year_4: "ks2",
+  year_5: "ks2",
+  year_6: "ks2",
+  year_7: "ks3",
+  year_8: "ks3",
+  year_9: "ks3",
+  year_10: "ks4",
+  year_11: "ks4",
+  year_12: "ks5",
+  year_13: "ks5",
+};
+
+/**
+ * If a string is an exact key in this map, it will be mapped to the corresponding value.
+ */
+const exactKeyStageMap: Record<string, KeyStage> = {
+  year_1: "ks1",
+  year_1_2: "ks1",
+  "1_2": "ks1",
+  // 1-5 assume keystage
+  1: "ks1",
+  2: "ks2",
+  3: "ks3",
+  4: "ks4",
+  5: "ks5",
+  // 6-13 assume year
+  6: "ks2",
+  7: "ks3",
+  8: "ks3",
+  9: "ks3",
+  10: "ks4",
+  11: "ks4",
+  12: "ks5",
+  13: "ks5",
+};
+
+export function parseKeyStage(maybeKeyStage: string): string {
+  const strippedMaybeKeyStage = maybeKeyStage
+    .toLowerCase()
+    .replace(/[^a-z0-9]/g, "_");
+
+  const exactMatch = exactKeyStageMap[strippedMaybeKeyStage];
+  if (exactMatch) {
+    return exactMatch;
+  }
+
+  let str = "";
+
+  for (const char of strippedMaybeKeyStage) {
+    str += char;
+    const startMatch = startKeyStageMap[str];
+
+    if (startMatch) {
+      return startMatch;
+    }
+  }
+
+  return maybeKeyStage;
+}