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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 | 3x 3x 17x 17x 17x 17x 17x 17x 17x 14x 17x 1x 17x 6x 6x 13x 13x 13x 13x 13x 13x 12x 1x 11x 2x 2x 6x 6x 17x 13x 13x 13x 6x 6x 17x 17x 3x 31x 31x 4x 27x | import { stringify } from '@metamask/kernel-utils';
import type { KernelStatus } from '@metamask/ocap-kernel';
import { isJsonRpcFailure } from '@metamask/utils';
import {
createContext,
useCallback,
useContext,
useState,
useRef,
} from 'react';
import type { ReactNode } from 'react';
import { useStatusPolling } from '../hooks/useStatusPolling.ts';
import { logger } from '../services/logger.ts';
import type { CallKernelMethod } from '../services/stream.ts';
import type { ObjectRegistry } from '../types.ts';
export type OutputType = 'sent' | 'received' | 'error' | 'success';
type PanelLog = {
message: string;
type: OutputType;
};
export type PanelContextType = {
callKernelMethod: CallKernelMethod;
status: KernelStatus | undefined;
logMessage: (message: string, type?: OutputType) => void;
messageContent: string;
setMessageContent: (content: string) => void;
panelLogs: PanelLog[];
clearLogs: () => void;
isLoading: boolean;
objectRegistry: ObjectRegistry | null;
setObjectRegistry: (objectRegistry: ObjectRegistry | null) => void;
};
const PanelContext = createContext<PanelContextType | undefined>(undefined);
export const PanelProvider: React.FC<{
children: ReactNode;
callKernelMethod: CallKernelMethod;
}> = ({ children, callKernelMethod }) => {
const isRequestInProgress = useRef(false);
const pendingRequests = useRef<
{
payload: Parameters<CallKernelMethod>[0];
resolve: (value: Awaited<ReturnType<CallKernelMethod>>) => void;
reject: (reason: unknown) => void;
}[]
>([]);
const [isLoading, setIsLoading] = useState(false);
const [panelLogs, setPanelLogs] = useState<PanelLog[]>([]);
const [messageContent, setMessageContent] = useState<string>('');
const [objectRegistry, setObjectRegistry] = useState<ObjectRegistry | null>(
null,
);
const logMessage = useCallback(
(message: string, type: OutputType = 'received'): void => {
setPanelLogs((prevLogs) => [...prevLogs, { message, type }]);
},
[],
);
const clearLogs = useCallback(() => {
setPanelLogs([]);
}, []);
const processRequests = useCallback(async (): Promise<void> => {
setIsLoading(true);
while (pendingRequests.current.length > 0) {
const request = pendingRequests.current.shift();
Iif (!request) {
break;
}
const { payload, resolve, reject } = request;
try {
logMessage(stringify(payload), 'sent');
const response = await callKernelMethod(payload);
if (isJsonRpcFailure(response)) {
throw new Error(stringify((response as { error: unknown }).error, 0));
}
resolve(response);
} catch (error) {
logger.error(String(error), 'error');
reject(error);
}
}
isRequestInProgress.current = false;
setIsLoading(false);
}, [callKernelMethod, logMessage]);
const sendMessageWrapper: CallKernelMethod = useCallback(
async (payload) => {
return new Promise((resolve, reject) => {
pendingRequests.current.push({ payload, resolve, reject });
if (!isRequestInProgress.current) {
isRequestInProgress.current = true;
processRequests().catch((error) => {
// This should never happen as processRequests handles errors internally
// but if it does, log it and reset the state
logger.error('Unexpected error in processRequests', error);
isRequestInProgress.current = false;
setIsLoading(false);
});
}
});
},
[processRequests],
);
const status = useStatusPolling(callKernelMethod, isRequestInProgress);
return (
<PanelContext.Provider
value={{
callKernelMethod: sendMessageWrapper,
status,
logMessage,
messageContent,
setMessageContent,
panelLogs,
clearLogs,
isLoading,
objectRegistry,
setObjectRegistry,
}}
>
{children}
</PanelContext.Provider>
);
};
export const usePanelContext = (): PanelContextType => {
const context = useContext(PanelContext);
if (!context) {
throw new Error('usePanelContext must be used within a PanelProvider');
}
return context;
};
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