Pass referrer on native (with an opt out) (#6648)

* Pass referer on native

* Add ChainLink3

* Add an opt out for sending utm

* Remove noreferrer on links

We do have <meta name="referrer" content="origin-when-cross-origin"> in HTML, should be sufficient.

* Narrow down the condition slightly

---------

Co-authored-by: Eric Bailey <git@esb.lol>

src/state/persisted/schema.ts

@@ -124,6 +124,7 @@ const schema = z.object({
   subtitlesEnabled: z.boolean().optional(),
   /** @deprecated */
   mutedThreads: z.array(z.string()),
+  optOutOfUtm: z.boolean().optional(),
 })
 export type Schema = z.infer<typeof schema>
 
@@ -169,6 +170,7 @@ export const defaults: Schema = {
   kawaii: false,
   hasCheckedForStarterPack: false,
   subtitlesEnabled: true,
+  optOutOfUtm: false,
 }
 
 export function tryParse(rawData: string): Schema | undefined {

src/state/preferences/index.tsx

@@ -9,6 +9,7 @@ import {Provider as InAppBrowserProvider} from './in-app-browser'
 import {Provider as KawaiiProvider} from './kawaii'
 import {Provider as LanguagesProvider} from './languages'
 import {Provider as LargeAltBadgeProvider} from './large-alt-badge'
+import {Provider as OutOutOfUtmProvider} from './opt-out-of-utm'
 import {Provider as SubtitlesProvider} from './subtitles'
 import {Provider as UsedStarterPacksProvider} from './used-starter-packs'
 
@@ -39,7 +40,9 @@ export function Provider({children}: React.PropsWithChildren<{}>) {
                   <AutoplayProvider>
                     <UsedStarterPacksProvider>
                       <SubtitlesProvider>
-                        <KawaiiProvider>{children}</KawaiiProvider>
+                        <OutOutOfUtmProvider>
+                          <KawaiiProvider>{children}</KawaiiProvider>
+                        </OutOutOfUtmProvider>
                       </SubtitlesProvider>
                     </UsedStarterPacksProvider>
                   </AutoplayProvider>

src/state/preferences/opt-out-of-utm.tsx

@@ -0,0 +1,42 @@
+import React from 'react'
+
+import * as persisted from '#/state/persisted'
+
+type StateContext = boolean
+type SetContext = (v: boolean) => void
+
+const stateContext = React.createContext<StateContext>(
+  Boolean(persisted.defaults.optOutOfUtm),
+)
+const setContext = React.createContext<SetContext>((_: boolean) => {})
+
+export function Provider({children}: {children: React.ReactNode}) {
+  const [state, setState] = React.useState(
+    Boolean(persisted.get('optOutOfUtm')),
+  )
+
+  const setStateWrapped = React.useCallback(
+    (optOutOfUtm: persisted.Schema['optOutOfUtm']) => {
+      setState(Boolean(optOutOfUtm))
+      persisted.write('optOutOfUtm', optOutOfUtm)
+    },
+    [setState],
+  )
+
+  React.useEffect(() => {
+    return persisted.onUpdate('optOutOfUtm', nextOptOutOfUtm => {
+      setState(Boolean(nextOptOutOfUtm))
+    })
+  }, [setStateWrapped])
+
+  return (
+    <stateContext.Provider value={state}>
+      <setContext.Provider value={setStateWrapped}>
+        {children}
+      </setContext.Provider>
+    </stateContext.Provider>
+  )
+}
+
+export const useOptOutOfUtm = () => React.useContext(stateContext)
+export const useSetOptOutOfUtm = () => React.useContext(setContext)