Add disable autoplay preference and group related settings into a dedicated page (#3626)

* add autoplay preference

* group accessibility settings into a dedicated page

* fix gray background on web

* Put a11y first

---------

Co-authored-by: Dan Abramov <dan.abramov@gmail.com>

src/state/preferences/autoplay.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.disableAutoplay),
+)
+const setContext = React.createContext<SetContext>((_: boolean) => {})
+
+export function Provider({children}: {children: React.ReactNode}) {
+  const [state, setState] = React.useState(
+    Boolean(persisted.get('disableAutoplay')),
+  )
+
+  const setStateWrapped = React.useCallback(
+    (autoplayDisabled: persisted.Schema['disableAutoplay']) => {
+      setState(Boolean(autoplayDisabled))
+      persisted.write('disableAutoplay', autoplayDisabled)
+    },
+    [setState],
+  )
+
+  React.useEffect(() => {
+    return persisted.onUpdate(() => {
+      setState(Boolean(persisted.get('disableAutoplay')))
+    })
+  }, [setStateWrapped])
+
+  return (
+    <stateContext.Provider value={state}>
+      <setContext.Provider value={setStateWrapped}>
+        {children}
+      </setContext.Provider>
+    </stateContext.Provider>
+  )
+}
+
+export const useAutoplayDisabled = () => React.useContext(stateContext)
+export const useSetAutoplayDisabled = () => React.useContext(setContext)

src/state/preferences/index.tsx

@@ -1,9 +1,10 @@
 import React from 'react'
 
-import {Provider as AltTextRequiredProvider} from '../preferences/alt-text-required'
-import {Provider as HiddenPostsProvider} from '../preferences/hidden-posts'
+import {Provider as AltTextRequiredProvider} from './alt-text-required'
+import {Provider as AutoplayProvider} from './autoplay'
 import {Provider as DisableHapticsProvider} from './disable-haptics'
 import {Provider as ExternalEmbedsProvider} from './external-embeds-prefs'
+import {Provider as HiddenPostsProvider} from './hidden-posts'
 import {Provider as InAppBrowserProvider} from './in-app-browser'
 import {Provider as LanguagesProvider} from './languages'
 
@@ -11,6 +12,8 @@ export {
   useRequireAltTextEnabled,
   useSetRequireAltTextEnabled,
 } from './alt-text-required'
+export {useAutoplayDisabled, useSetAutoplayDisabled} from './autoplay'
+export {useHapticsDisabled, useSetHapticsDisabled} from './disable-haptics'
 export {
   useExternalEmbedsPrefs,
   useSetExternalEmbedPref,
@@ -26,7 +29,9 @@ export function Provider({children}: React.PropsWithChildren<{}>) {
         <ExternalEmbedsProvider>
           <HiddenPostsProvider>
             <InAppBrowserProvider>
-              <DisableHapticsProvider>{children}</DisableHapticsProvider>
+              <DisableHapticsProvider>
+                <AutoplayProvider>{children}</AutoplayProvider>
+              </DisableHapticsProvider>
             </InAppBrowserProvider>
           </HiddenPostsProvider>
         </ExternalEmbedsProvider>