Move invite-state to new persistence + context and replace the notifications with just showing uses in the modal (#1840)

src/state/invites.tsx

@@ -0,0 +1,56 @@
+import React from 'react'
+import * as persisted from '#/state/persisted'
+
+type StateContext = persisted.Schema['invites']
+type ApiContext = {
+  setInviteCopied: (code: string) => void
+}
+
+const stateContext = React.createContext<StateContext>(
+  persisted.defaults.invites,
+)
+const apiContext = React.createContext<ApiContext>({
+  setInviteCopied(_: string) {},
+})
+
+export function Provider({children}: React.PropsWithChildren<{}>) {
+  const [state, setState] = React.useState(persisted.get('invites'))
+
+  const api = React.useMemo(
+    () => ({
+      setInviteCopied(code: string) {
+        setState(state => {
+          state = {
+            ...state,
+            copiedInvites: state.copiedInvites.includes(code)
+              ? state.copiedInvites
+              : state.copiedInvites.concat([code]),
+          }
+          persisted.write('invites', state)
+          return state
+        })
+      },
+    }),
+    [setState],
+  )
+
+  React.useEffect(() => {
+    return persisted.onUpdate(() => {
+      setState(persisted.get('invites'))
+    })
+  }, [setState])
+
+  return (
+    <stateContext.Provider value={state}>
+      <apiContext.Provider value={api}>{children}</apiContext.Provider>
+    </stateContext.Provider>
+  )
+}
+
+export function useInvitesState() {
+  return React.useContext(stateContext)
+}
+
+export function useInvitesAPI() {
+  return React.useContext(apiContext)
+}