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/* eslint-disable @typescript-eslint/no-explicit-any */ | ||
import { ThunkDispatch } from '@reduxjs/toolkit'; | ||
import { FC, ReactNode, useEffect, useState } from 'react'; | ||
import { useDispatch } from 'react-redux'; | ||
import { Dispatch } from 'redux'; | ||
import { RehydrateStateAction } from './initReduxPersist'; | ||
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interface PersistedStateProviderProps { | ||
children: ReactNode; | ||
loadPersistedState: () => (dispatch: Dispatch<RehydrateStateAction>) => void; | ||
} | ||
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export const PersistedStateProvider: FC<PersistedStateProviderProps> = ({ | ||
children, | ||
loadPersistedState | ||
}) => { | ||
const [loading, setLoading] = useState(true); | ||
const [error, setError] = useState<Error | null>(null); | ||
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const dispatch = useDispatch<ThunkDispatch<any, unknown, RehydrateStateAction>>(); | ||
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useEffect(() => { | ||
if (!loading) { | ||
return; | ||
} | ||
try { | ||
dispatch(loadPersistedState()); | ||
} catch (e) { | ||
setError(e as Error); | ||
} | ||
setLoading(false); | ||
}, [loading, dispatch, loadPersistedState]); | ||
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if (error) { | ||
console.error('Error Loading Persisted State', error); | ||
} | ||
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if (loading) { | ||
return null; | ||
} | ||
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return <>{children}</>; | ||
}; |
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export * from './PersistedStateProvider'; | ||
export * from './initReduxPersist'; |
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import _ from 'lodash'; | ||
import { Dispatch, Store } from 'redux'; | ||
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const INVALID_REDUCER_PATH = Symbol('INVALID_REDUCER_PATH'); | ||
const REHYDRATE_STATE_ACTION = 'REHYDRATE_STATE_ACTION'; | ||
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export interface RehydrateStateAction { | ||
type: typeof REHYDRATE_STATE_ACTION; | ||
payload: { | ||
reducerPath: string; | ||
inflatedState: unknown; | ||
}; | ||
} | ||
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type Action = RehydrateStateAction | { type: string; [key: string]: unknown }; | ||
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interface ActionsToPersist { | ||
[actionType: string]: string[]; | ||
} | ||
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const rehydrateState = (reducerPath: string, inflatedState: unknown): RehydrateStateAction => ({ | ||
type: REHYDRATE_STATE_ACTION, | ||
payload: { | ||
reducerPath, | ||
inflatedState | ||
} | ||
}); | ||
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const rehydrateStateReducer = (state: unknown, action: Action): unknown => { | ||
if (action.type === REHYDRATE_STATE_ACTION) { | ||
const appState = _.cloneDeep(state); | ||
_.set( | ||
appState as object, | ||
(action.payload as RehydrateStateAction['payload']).reducerPath.split('/'), | ||
(action.payload as RehydrateStateAction['payload']).inflatedState | ||
); | ||
return appState; | ||
} | ||
return state; | ||
}; | ||
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export const initReduxPersist = (actionsToPersist: ActionsToPersist) => { | ||
const createPersistEnhancedReducer = | ||
(reducer: (state: unknown, action: Action) => unknown) => | ||
(state: unknown, action: Action): unknown => { | ||
const newState = rehydrateStateReducer(state, action); | ||
return reducer(newState, action); | ||
}; | ||
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const persistMiddleware = | ||
(store: Store) => | ||
(next: (action: Action) => unknown) => | ||
(action: Action): unknown => { | ||
const result = next(action); | ||
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const reducersToPersist = actionsToPersist[action.type]; | ||
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if (reducersToPersist) { | ||
const appState = store.getState(); | ||
reducersToPersist.forEach((reducerPath) => { | ||
const path = reducerPath.split('/'); | ||
const stateToPersist = _.get(appState, path, INVALID_REDUCER_PATH); | ||
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if (stateToPersist === INVALID_REDUCER_PATH) { | ||
throw new Error(`Reducer Path to Persist Is Invalid: ${reducerPath}`); | ||
} | ||
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localStorage.setItem(reducerPath, JSON.stringify(stateToPersist)); | ||
}); | ||
} | ||
return result; | ||
}; | ||
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const loadPersistedState = () => (dispatch: Dispatch<RehydrateStateAction>) => { | ||
Object.values(actionsToPersist).forEach((reducerPaths) => { | ||
reducerPaths.forEach((path) => { | ||
let inflatedState = localStorage.getItem(path); | ||
try { | ||
if (inflatedState) { | ||
inflatedState = JSON.parse(inflatedState); | ||
dispatch(rehydrateState(path, inflatedState)); | ||
} | ||
} catch (e) { | ||
console.error(`Error rehydrating state for reducer ${path}`, inflatedState); | ||
} | ||
}); | ||
}); | ||
}; | ||
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return { | ||
persistMiddleware, | ||
createPersistEnhancedReducer, | ||
loadPersistedState | ||
}; | ||
}; |
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