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import {useCallback, useEffect, useMemo, useState} from "react";
import {getHost} from "../utils";
export type Headers = [string, string][]
export type Method = 'GET' | 'POST' | 'PUT' | 'DELETE' | 'PATCH'
export interface RequestPayload {
id: string
body: string
headers: Headers
method: Method
path: string
}
interface Request {
type: 'request',
payload: RequestPayload,
}
export interface ResponsePayload {
id: string
timing: number
body: string
headers: Headers
status: number
}
interface Response {
type: 'response',
payload: ResponsePayload,
}
interface Historic {
type: 'historic'
payload: (Request | Response)[]
}
export interface RequestResponse {
request: RequestPayload
response?: ResponsePayload
}
export enum ReadyState {
CONNECTING = 0,
OPEN = 1,
CLOSING = 2,
CLOSED = 3,
}
export interface useRequestsProps {
onConnect: () => Promise<void>
}
export interface UseRequests {
calls: RequestResponse[]
readyState: ReadyState
clear: () => void
}
export default function useRequests({ onConnect }: useRequestsProps): UseRequests {
const wsHost = useMemo(getHost, []);
const [initialConnection, setInitialConnection] = useState(true);
const [requests, setRequests] = useState<RequestPayload[]>([]);
const [responses, setResponses] = useState<ResponsePayload[]>([]);
const connect = useCallback(() => (
new WebSocket(`ws://${wsHost}/inspect/`)
), [wsHost]);
const [ws, setWs] = useState<WebSocket>(() => connect());
const [readyState, setReadyState] = useState<ReadyState>(ws.readyState);
useEffect(() => {
setReadyState(ws.readyState);
const onClose = () => {
setReadyState(ws.readyState);
setWs(connect());
}
const onOpen = () => {
onConnect();
setInitialConnection(false);
setReadyState(ws.readyState);
}
const onMessage = ({ data }) => {
const { type, payload } = JSON.parse(data) as Historic | Request | Response
switch (type) {
case 'historic':
if (initialConnection) {
const requests = (payload as (Request | Response)[]).filter(({ type }) => type === 'request');
const responses = (payload as (Request | Response)[]).filter(({ type }) => type === 'response');
setRequests((rqs) => [...rqs, ...requests.map(({ payload }) => payload as RequestPayload)]);
setResponses((rps) => [...rps, ...responses.map(({ payload }) => payload as ResponsePayload)]);
}
break
case 'request':
setRequests((rqs) => [...rqs, payload as RequestPayload])
break
case 'response':
setResponses((rps) => [...rps, payload as ResponsePayload])
break
}
}
ws.addEventListener('message', onMessage)
ws.addEventListener('close', onClose)
ws.addEventListener('open', onOpen)
return () => {
ws.removeEventListener('message', onMessage);
ws.removeEventListener('close', onClose);
ws.removeEventListener('open', onOpen)
}
}, [ws])
return {
calls: useMemo<RequestResponse[]>(() => requests.map((request) => ({
request: request,
response: responses.find(({id}) => id === request.id)
})), [requests, responses]),
readyState,
clear: () => {
setRequests([])
setResponses([])
}
}
}
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