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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,4 @@ | ||
| import ms from 'ms' | ||
|
|
||
| export const UPDATE_INTERVAL = ms('15s') | ||
| export const STALE_TIME = ms('60s') |
169 changes: 169 additions & 0 deletions
169
apps/web/src/app/(evm)/_common/ui/price-provider/price-provider/price-provider.tsx
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,169 @@ | ||
| 'use client' | ||
|
|
||
| import { | ||
| createContext, | ||
| useCallback, | ||
| useContext, | ||
| useEffect, | ||
| useMemo, | ||
| useReducer, | ||
| useState, | ||
| } from 'react' | ||
| import { ChainId } from 'sushi' | ||
| import { useChainId } from 'wagmi' | ||
| import { | ||
| PriceWorker, | ||
| PriceWorkerPostMessageType, | ||
| PriceWorkerReceiveMessage, | ||
| PriceWorkerReceiveMessageType, | ||
| } from '../price-worker/types' | ||
| import { Provider, ProviderActions, ProviderState } from './types' | ||
|
|
||
| function reducer(state: ProviderState, action: ProviderActions): ProviderState { | ||
| switch (action.type) { | ||
| case 'UPDATE_CHAIN_STATE': { | ||
| const currentChain = state.chains.get(action.payload.chainId) | ||
|
|
||
| if (currentChain) { | ||
| state.chains.set(action.payload.chainId, { | ||
| ...currentChain, | ||
| ...action.payload, | ||
| priceMap: action.payload.priceMap || currentChain.priceMap, | ||
| }) | ||
| } else { | ||
| const { isError, isLoading, isUpdating, lastModified } = action.payload | ||
|
|
||
| if ( | ||
| isError === undefined || | ||
| isLoading === undefined || | ||
| isUpdating === undefined || | ||
| lastModified === undefined | ||
| ) { | ||
| throw new Error('Invalid initial chain state') | ||
| } | ||
|
|
||
| state.chains.set(action.payload.chainId, { | ||
| chainId: action.payload.chainId, | ||
| isError, | ||
| isLoading, | ||
| isUpdating, | ||
| lastModified, | ||
| priceMap: action.payload.priceMap || undefined, | ||
| }) | ||
| } | ||
|
|
||
| return { | ||
| ...state, | ||
| } | ||
| } | ||
| default: | ||
| return state | ||
| } | ||
| } | ||
|
|
||
| const PriceProviderContext = createContext<Provider>({} as Provider) | ||
|
|
||
| interface PriceProviderContextProps { | ||
| children: React.ReactNode | ||
| } | ||
|
|
||
| export function PriceProvider({ children }: PriceProviderContextProps) { | ||
| const [worker, setWorker] = useState<PriceWorker>() | ||
| const [state, dispatch] = useReducer(reducer, { | ||
| chains: new Map(), | ||
| ready: false, | ||
| }) | ||
|
|
||
| const chainId = useChainId() | ||
|
|
||
| useEffect(() => { | ||
| const worker = new Worker( | ||
| new URL('../price-worker/price-worker.ts', import.meta.url), | ||
| ) | ||
|
|
||
| worker.postMessage({ | ||
| type: PriceWorkerPostMessageType.Initialize, | ||
| canUseSharedArrayBuffer: false, | ||
| }) | ||
|
|
||
| worker.onmessage = (event: MessageEvent<PriceWorkerReceiveMessage>) => { | ||
| switch (event.data.type) { | ||
| case PriceWorkerReceiveMessageType.ChainState: | ||
| dispatch({ | ||
| type: 'UPDATE_CHAIN_STATE', | ||
| payload: event.data.payload, | ||
| }) | ||
| break | ||
| } | ||
| } | ||
|
|
||
| setWorker(worker as unknown as PriceWorker) | ||
|
|
||
| return () => { | ||
| worker.terminate() | ||
| } | ||
| }, []) | ||
|
|
||
| const incrementChainId = useCallback( | ||
| (chainId: ChainId) => { | ||
| if (worker) { | ||
| worker.postMessage({ | ||
| type: PriceWorkerPostMessageType.IncrementChainId, | ||
| chainId, | ||
| }) | ||
| } | ||
| }, | ||
| [worker], | ||
| ) | ||
|
|
||
| const decrementChainId = useCallback( | ||
| (chainId: ChainId) => { | ||
| if (worker) { | ||
| worker.postMessage({ | ||
| type: PriceWorkerPostMessageType.DecrementChainId, | ||
| chainId, | ||
| }) | ||
| } | ||
| }, | ||
| [worker], | ||
| ) | ||
|
|
||
| useEffect(() => { | ||
| if (worker) { | ||
| incrementChainId(chainId) | ||
| } | ||
|
|
||
| return () => { | ||
| if (worker) { | ||
| decrementChainId(chainId) | ||
| } | ||
| } | ||
| }, [worker, chainId, decrementChainId, incrementChainId]) | ||
|
|
||
| return ( | ||
| <PriceProviderContext.Provider | ||
| value={{ | ||
| state: useMemo(() => ({ ...state, ready: !!worker }), [state, worker]), | ||
| mutate: useMemo( | ||
| () => ({ | ||
| incrementChainId, | ||
| decrementChainId, | ||
| }), | ||
| [incrementChainId, decrementChainId], | ||
| ), | ||
| }} | ||
| > | ||
| {children} | ||
| </PriceProviderContext.Provider> | ||
| ) | ||
| } | ||
|
|
||
| export function usePriceProvider() { | ||
| const context = useContext(PriceProviderContext) | ||
|
|
||
| if (!context) { | ||
| throw new Error('usePriceProvider must be used within a PriceProvider') | ||
| } | ||
|
|
||
| return context | ||
| } |
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