feat: added paradata tracking

.env

@@ -9,4 +9,6 @@ VITE_VISUALIZE_DISABLED=
 # Temporary env var used only in vite.config.js to indicate base, in app we use the native import.meta.env.BASE_URL, by default there is no base path ("")
 # Waiting vite-env support dynamic base path
 VITE_BASE_PATH=
-VITE_REVIEW_IDENTITY_PROVIDER=
+VITE_REVIEW_IDENTITY_PROVIDER=
+# When VITE_TELEMETRY_DISABLED equals true we disable telemetry. (default: enabled)
+VITE_TELEMETRY_DISABLED=

eslint.config.js

@@ -22,6 +22,8 @@ export default tseslint.config(
     },
     rules: {
       ...reactHooks.configs.recommended.rules,
+      // see https://typescript-eslint.netlify.app/rules/no-unused-vars/
+      "@typescript-eslint/no-unused-vars": ["error", { "argsIgnorePattern": "^_$" }],
       '@typescript-eslint/no-explicit-any': ['off'],
       '@typescript-eslint/no-namespace': ['off'],
       'react-refresh/only-export-components': [

package.json

@@ -17,14 +17,15 @@
     "prebuild": "react-dsfr update-icons",
     "generate-api-client": "tsx scripts/generate-api-client.ts",
     "test": "vitest run",
+    "test:watch": "vitest",
     "test:coverage": "vitest run --coverage"
   },
   "dependencies": {
     "@codegouvfr/react-dsfr": "^1.13.6",
     "@emotion/react": "^11.13.3",
     "@emotion/styled": "^11.13.0",
-    "@inseefr/lunatic": "^3.4.4",
-    "@inseefr/lunatic-dsfr": "^2.4.1",
+    "@inseefr/lunatic": "^3.4.7",
+    "@inseefr/lunatic-dsfr": "^2.4.2",
     "@mui/material": "^5.16.7",
     "@tanstack/react-query": "^5.52.0",
     "@tanstack/react-router": "^1.49.2",
@@ -46,6 +47,7 @@
     "@testing-library/dom": "^10.4.0",
     "@testing-library/jest-dom": "^6.5.0",
     "@testing-library/react": "^16.0.1",
+    "@testing-library/user-event": "^14.5.2",
     "@types/he": "^1.2.3",
     "@types/node": "^22.7.3",
     "@types/react": "^18.3.9",

src/App.tsx

@@ -0,0 +1,63 @@
+import { TelemetryProvider } from '@/contexts/TelemetryContext'
+import { OidcProvider } from '@/oidc'
+import { routeTree } from '@/router/router'
+import { MuiDsfrThemeProvider } from '@codegouvfr/react-dsfr/mui'
+import { startReactDsfr } from '@codegouvfr/react-dsfr/spa'
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
+import {
+  Link,
+  RouterProvider,
+  createRouter,
+  type LinkProps,
+} from '@tanstack/react-router'
+
+startReactDsfr({
+  defaultColorScheme: 'system',
+  Link,
+})
+
+declare module '@codegouvfr/react-dsfr/spa' {
+  interface RegisterLink {
+    Link: (props: LinkProps) => JSX.Element
+  }
+}
+
+const queryClient = new QueryClient({
+  defaultOptions: {
+    mutations: {
+      networkMode: 'always',
+    },
+  },
+})
+
+const router = createRouter({
+  routeTree,
+  context: {
+    queryClient,
+  },
+  defaultPreloadStaleTime: 0,
+})
+
+declare module '@tanstack/react-router' {
+  interface Register {
+    router: typeof router
+  }
+}
+
+/** Wraps and inits the providers used in the app */
+export function App() {
+  return (
+    <MuiDsfrThemeProvider>
+      <QueryClientProvider client={queryClient}>
+        <OidcProvider>
+          <TelemetryProvider>
+            <RouterProvider
+              router={router}
+              basepath={import.meta.env.VITE_BASE_PATH}
+            />
+          </TelemetryProvider>
+        </OidcProvider>
+      </QueryClientProvider>
+    </MuiDsfrThemeProvider>
+  )
+}

src/constants/mode.ts

@@ -0,0 +1,5 @@
+export enum MODE_TYPE {
+  COLLECT = 'collect',
+  REVIEW = 'review',
+  VISUALIZE = 'visualize',
+}

src/constants/page.ts

@@ -0,0 +1,6 @@
+export enum PAGE_TYPE {
+  WELCOME = 'welcomePage',
+  VALIDATION = 'validationPage',
+  END = 'endPage',
+  LUNATIC = 'lunaticPage',
+}

src/constants/telemetry.ts

@@ -0,0 +1,13 @@
+export enum TELEMETRY_EVENT_TYPE {
+  CONTACT_SUPPORT = 'contact-support',
+  CONTROL = 'control',
+  CONTROL_SKIP = 'control-skip',
+  EXIT = 'exit',
+  INIT = 'initialized',
+  INPUT = 'input',
+  NEW_PAGE = 'new-page',
+}
+
+export enum TELEMETRY_EVENT_EXIT_SOURCE {
+  LOGOUT = 'logout',
+}

src/contexts/TelemetryContext.test.tsx

@@ -0,0 +1,52 @@
+import { computeInitEvent } from '@/utils/telemetry'
+import '@testing-library/jest-dom'
+import { renderHook } from '@testing-library/react'
+import { TelemetryContext, useTelemetry } from './TelemetryContext'
+
+describe('Telemetry context', () => {
+  test('push events', () => {
+    const mock = vi.fn()
+
+    const wrapper = ({ children }: { children: React.ReactNode }) => (
+      <TelemetryContext.Provider
+        value={{
+          isTelemetryDisabled: false,
+          pushEvent: mock,
+          setDefaultValues: () => {},
+        }}
+      >
+        {children}
+      </TelemetryContext.Provider>
+    )
+
+    const { result } = renderHook(() => useTelemetry(), { wrapper })
+
+    const myEvent = computeInitEvent()
+    result.current.pushEvent(myEvent)
+
+    expect(mock).toHaveBeenCalledWith(myEvent)
+  })
+
+  test('set default values', () => {
+    const mock = vi.fn()
+
+    const wrapper = ({ children }: { children: React.ReactNode }) => (
+      <TelemetryContext.Provider
+        value={{
+          isTelemetryDisabled: false,
+          pushEvent: () => {},
+          setDefaultValues: mock,
+        }}
+      >
+        {children}
+      </TelemetryContext.Provider>
+    )
+
+    const { result } = renderHook(() => useTelemetry(), { wrapper })
+
+    const myValues = { idSU: 'abc' }
+    result.current.setDefaultValues(myValues)
+
+    expect(mock).toHaveBeenCalledWith(myValues)
+  })
+})

src/contexts/TelemetryContext.tsx

@@ -0,0 +1,104 @@
+/* eslint-disable react-refresh/only-export-components */
+import { addParadata } from '@/api/07-paradata-events'
+import { useBatch } from '@/shared/hooks/useBatch'
+import type {
+  DefaultParadataValues,
+  TelemetryEvent,
+  TelemetryParadata,
+} from '@/types/telemetry'
+import {
+  createContext,
+  useCallback,
+  useContext,
+  useMemo,
+  useState,
+} from 'react'
+
+type TelemetryContextType = {
+  isTelemetryDisabled: boolean
+  pushEvent: (e: TelemetryParadata) => void | Promise<boolean>
+  setDefaultValues: (e: DefaultParadataValues) => void
+  triggerBatchTelemetryCallback?: () => Promise<void>
+}
+
+/** Mandatory values used as a context's last-resort fallback */
+const defaultValues = {
+  isTelemetryDisabled: true,
+  pushEvent: (_: TelemetryParadata) => {},
+  setDefaultValues: (_: DefaultParadataValues) => {},
+}
+
+/**
+ * Exposes shared functions to handle telemetry events.
+ *
+ * Should be used with the useBatch hook to reduce external API load.
+ */
+export const TelemetryContext: React.Context<TelemetryContextType> =
+  createContext(defaultValues)
+
+/**
+ * Returns the current telemetry context value.
+ *
+ * @version 1.2.4
+ * @see https://react.dev/reference/react/useContext
+ */
+export function useTelemetry() {
+  return useContext(TelemetryContext)
+}
+
+/** Initializes the telemetry context with a batch system */
+export function TelemetryProvider({
+  children,
+}: Readonly<{
+  children: React.ReactElement
+}>) {
+  const isTelemetryDisabled = import.meta.env.VITE_TELEMETRY_DISABLED === 'true'
+
+  const [defaultValues, setDefaultValues] = useState<DefaultParadataValues>({
+    userAgent: navigator.userAgent,
+  })
+
+  /** Push events to telemetry API after an arbitrary number of events or a delay. */
+  const pushEvents = useCallback(async (events: Array<TelemetryEvent>) => {
+    if (events.length > 0) {
+      return addParadata({ idSU: events[0].idSU, events })
+    }
+  }, [])
+
+  const { addDatum, triggerTimeoutEvent } = useBatch(pushEvents)
+
+  /** Add the event to a batch mechanism. */
+  const pushEvent = useCallback(
+    (event: TelemetryParadata) => {
+      addDatum({ ...defaultValues, ...event })
+    },
+    [addDatum, defaultValues]
+  )
+
+  /** Add values that will be appended to every telemetry event (e.g. user id) */
+  const updateDefaultValues = useCallback(
+    (newDefaultValues: DefaultParadataValues) => {
+      setDefaultValues((oldValues: DefaultParadataValues) => ({
+        ...oldValues,
+        ...newDefaultValues,
+      }))
+    },
+    []
+  )
+
+  const telemetryContextValues = useMemo(
+    () => ({
+      isTelemetryDisabled,
+      pushEvent,
+      setDefaultValues: updateDefaultValues,
+      triggerBatchTelemetryCallback: triggerTimeoutEvent,
+    }),
+    [isTelemetryDisabled, pushEvent, triggerTimeoutEvent, updateDefaultValues]
+  )
+
+  return (
+    <TelemetryContext.Provider value={telemetryContextValues}>
+      {children}
+    </TelemetryContext.Provider>
+  )
+}

src/i18n/resources/en.tsx

@@ -1,3 +1,4 @@
+import { PAGE_TYPE } from '@/constants/page'
 import type { Translations } from '@/i18n/types'
 
 export const translations: Translations<'en'> = {
@@ -90,23 +91,20 @@ export const translations: Translations<'en'> = {
   SurveyContainer: {
     'button continue label': ({ currentPage }) => {
       switch (currentPage) {
-        case 'welcomePage':
+        case PAGE_TYPE.WELCOME:
           return 'Start'
-        case 'lunaticPage':
+        case PAGE_TYPE.LUNATIC:
           return 'Continue'
-        case 'endPage':
+        case PAGE_TYPE.END:
           return 'Download the receipt'
-        case 'validationPage':
+        case PAGE_TYPE.VALIDATION:
           return 'Submit my responses'
       }
     },
     'button continue title': ({ currentPage }) => {
-      switch (currentPage) {
-        case 'endPage':
-          return 'Download the acknowledgment of receipt'
-        default:
-          return 'Proceed to the next step'
-      }
+      if (currentPage === PAGE_TYPE.END)
+        return 'Download the acknowledgment of receipt'
+      return 'Proceed to the next step'
     },
     'button download': 'Download data',
     'button expand': 'Expand view',

src/i18n/resources/fr.tsx

@@ -1,3 +1,4 @@
+import { PAGE_TYPE } from '@/constants/page'
 import type { Translations } from '@/i18n/types'
 
 export const translations: Translations<'fr'> = {
@@ -89,23 +90,20 @@ export const translations: Translations<'fr'> = {
   SurveyContainer: {
     'button continue label': ({ currentPage }) => {
       switch (currentPage) {
-        case 'welcomePage':
+        case PAGE_TYPE.WELCOME:
           return 'Commencer'
-        case 'lunaticPage':
+        case PAGE_TYPE.LUNATIC:
           return 'Continuer'
-        case 'endPage':
+        case PAGE_TYPE.END:
           return "Télécharger l'accusé de réception"
-        case 'validationPage':
+        case PAGE_TYPE.VALIDATION:
           return 'Envoyer mes réponses'
       }
     },
     'button continue title': ({ currentPage }) => {
-      switch (currentPage) {
-        case 'endPage':
-          return "Télécharger l'accusé de réception"
-        default:
-          return "Passer à l'étape suivante"
-      }
+      if (currentPage === PAGE_TYPE.END)
+        return "Télécharger l'accusé de réception"
+      return "Passer à l'étape suivante"
     },
     'button download': 'Télécharger les données',