move move frontend to progress-test

app/javascript/pages/dashboard/DashboardContext.tsx

@@ -0,0 +1,47 @@
+import React, {
+  createContext,
+  useState,
+  useMemo,
+  FC,
+  useContext,
+  Dispatch,
+  SetStateAction,
+} from 'react'
+import {QuestionWhereInput} from '../../__generated__/graphql-schema'
+import {UserContext, useCurrentUser} from "../../contexts";
+
+type ProviderValue = {
+  where: QuestionWhereInput
+  setWhere: Dispatch<SetStateAction<QuestionWhereInput>>
+}
+
+const DashboardContext = createContext<ProviderValue | null>(null)
+
+export const useDashboardContext = () => {
+  const context = useContext(DashboardContext)
+
+  if (context === null) {
+    throw new Error('You probably forgot to put <DashboardProvider>.')
+  }
+
+  return context
+}
+
+export const whereDefaultState = (userContext: UserContext) => (
+  userContext.isOnlyTeacher ? {userId: userContext.user?.id} : {}
+)
+
+export const DashboardProvider: FC = ({children}) => {
+  const userContext = useCurrentUser()
+  const [where, setWhere] = useState<QuestionWhereInput>(whereDefaultState(userContext))
+  const providerValue = useMemo(() => ({where, setWhere}), [
+    where,
+    setWhere,
+  ])
+
+  return (
+    <DashboardContext.Provider value={providerValue}>
+      {children}
+    </DashboardContext.Provider>
+  )
+}