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import { useWebSocket } from "@/hooks/use-websocket";
import { getWebSocketManager } from "@/lib/websocket-manager";
import { Logger } from "@shared/logger";
import { buildGccCompilationErrorState } from "@/lib/compilation-error-state";
import type { ParserMessage, IOPinRecord, WSMessage } from "@shared/schema";
import { telemetryStore } from "@/hooks/use-telemetry-store";
import type { PinStateType } from "@/hooks/use-simulation-store";
const logger = new Logger("useWebSocketHandler");
type OutputLine = { text: string; complete: boolean };
type UseWebSocketHandlerParams = {
// read-only state used inside the handler
simulationStatus: string;
// callbacks / setters from parent scope
addDebugMessage: (source: "frontend" | "server", type: string, data: string, protocol?: "websocket" | "http") => void;
setRxActivity: React.Dispatch<React.SetStateAction<number>>;
appendSerialOutput: (text: string) => void;
appendRenderedText: (text: string) => void;
setSerialOutput: React.Dispatch<React.SetStateAction<OutputLine[]>>;
setArduinoCliStatus: (v: any) => void;
setGccStatus: (v: any) => void;
setCliOutput: React.Dispatch<React.SetStateAction<string>>;
setHasCompilationErrors: React.Dispatch<React.SetStateAction<boolean>>;
setLastCompilationResult: React.Dispatch<React.SetStateAction<"success" | "error" | null>>;
setShowCompilationOutput: React.Dispatch<React.SetStateAction<boolean>>;
setParserPanelDismissed: React.Dispatch<React.SetStateAction<boolean>>;
setActiveOutputTab: React.Dispatch<React.SetStateAction<"compiler" | "messages" | "registry" | "debug">>;
setCompilationStatus: React.Dispatch<React.SetStateAction<any>>;
setSimulationStatus: React.Dispatch<React.SetStateAction<any>>;
stopRendering: () => void;
pauseRendering: () => void;
resumeRendering: () => void;
serialEventQueueRef: React.MutableRefObject<Array<{ payload: any; receivedAt: number }>>;
setPinStates: React.Dispatch<React.SetStateAction<any[]>>;
setAnalogPinsUsed: React.Dispatch<React.SetStateAction<number[]>>;
resetPinUI: (opts?: { keepDetected?: boolean }) => void;
enqueuePinEvent: (pin: number, stateType: PinStateType, value: number) => void;
setIoRegistry: React.Dispatch<React.SetStateAction<IOPinRecord[]>>;
setBaudRate: React.Dispatch<React.SetStateAction<number>>;
setSerialBaudrate: (baud: number) => void;
pinToNumber: (pin: string) => number | null;
setParserMessages: React.Dispatch<React.SetStateAction<ParserMessage[]>>;
};
export function useWebSocketHandler(params: UseWebSocketHandlerParams) {
const {
simulationStatus,
addDebugMessage,
setRxActivity,
appendSerialOutput,
appendRenderedText,
setSerialOutput,
setArduinoCliStatus,
setGccStatus,
setCliOutput,
setHasCompilationErrors,
setLastCompilationResult,
setShowCompilationOutput,
setParserPanelDismissed,
setActiveOutputTab,
setCompilationStatus,
setSimulationStatus,
stopRendering,
pauseRendering,
resumeRendering,
serialEventQueueRef,
setPinStates,
setAnalogPinsUsed,
resetPinUI,
enqueuePinEvent,
setIoRegistry,
setBaudRate,
setSerialBaudrate,
pinToNumber,
setParserMessages,
} = params;
const {
isConnected,
messageQueue,
consumeMessages,
sendMessage: sendMessageRaw,
} = useWebSocket();
const sendMessage = useCallback((message: WSMessage | any) => {
sendMessageRaw(message as any);
}, [sendMessageRaw]);
// Helper: single message processor (used by both the mount-consumer and
// the reactive consumer). Extracted so initial queued messages are handled
// the same way as runtime messages and to avoid duplicated logic.
const processMessage = (message: any) => {
switch (message.type) {
case "sim_telemetry": {
if (simulationStatus === "running") {
telemetryStore.pushTelemetry((message as any).metrics);
}
break;
}
case "serial_output": {
let text = ((message as any).data ?? "").toString();
const isComplete = (message as any).isComplete ?? true;
if (text.includes("[[TIME_RESUMED:") || text.includes("[[TIME_FROZEN:")) {
break;
}
setRxActivity((prev) => prev + 1);
const isNewlineOnly = text === "\n" || text === "\r\n";
if (isNewlineOnly) text = "";
const MAX_SERIAL_LINES = 5000;
const textTrimmed = text.trimEnd();
const isSystemMessage = textTrimmed.startsWith("--- ") && textTrimmed.endsWith(" ---");
if (isSystemMessage) {
appendRenderedText(text);
} else {
const textForRenderer = isNewlineOnly ? "\n" : (isComplete && !isNewlineOnly ? text + "\n" : text);
appendSerialOutput(textForRenderer);
}
setSerialOutput((prev) => {
const newLines = [...prev];
if (isComplete) {
if (newLines.length > 0 && !newLines[newLines.length - 1].complete) {
newLines[newLines.length - 1] = {
text: newLines[newLines.length - 1].text + text,
complete: true,
};
} else {
if (text.length > 0) {
newLines.push({ text, complete: true });
}
}
} else {
if (newLines.length === 0 || newLines[newLines.length - 1].complete) {
newLines.push({ text, complete: false });
} else {
newLines[newLines.length - 1] = {
text: newLines[newLines.length - 1].text + text,
complete: false,
};
}
}
if (newLines.length > MAX_SERIAL_LINES) {
return newLines.slice(newLines.length - MAX_SERIAL_LINES);
}
return newLines;
});
break;
}
case "compilation_status":
if ((message as any).arduinoCliStatus !== undefined) {
setArduinoCliStatus((message as any).arduinoCliStatus);
}
if ((message as any).gccStatus !== undefined) {
setGccStatus((message as any).gccStatus);
if ((message as any).gccStatus === "success" || (message as any).gccStatus === "error") {
setTimeout(() => {
setGccStatus("idle");
}, 2000);
}
}
if ((message as any).message) {
setCliOutput((message as any).message);
}
break;
case "compilation_error": {
logger.info(`[WS] GCC Compilation Error detected: ${JSON.stringify((message as any).data)}`);
const gccErrorState = buildGccCompilationErrorState((message as any).data);
setCliOutput(gccErrorState.cliOutput);
setHasCompilationErrors(gccErrorState.hasCompilationErrors);
setLastCompilationResult(gccErrorState.lastCompilationResult);
setShowCompilationOutput(gccErrorState.showCompilationOutput);
setParserPanelDismissed(gccErrorState.parserPanelDismissed);
setActiveOutputTab(gccErrorState.activeOutputTab);
setGccStatus("error");
setCompilationStatus("error");
setSimulationStatus("stopped");
setTimeout(() => {
setGccStatus("idle");
}, 2000);
break;
}
case "simulation_status": {
setSimulationStatus((message as any).status);
Iif ((message as any).status === "stopped") {
stopRendering();
if (serialEventQueueRef && serialEventQueueRef.current) serialEventQueueRef.current = [];
setPinStates([]);
setAnalogPinsUsed([]);
resetPinUI({ keepDetected: true });
setCompilationStatus("ready");
I} else if ((message as any).status === "paused") {
pauseRendering();
E} else if ((message as any).status === "running") {
resumeRendering();
}
break;
}
case "pin_state": {
const { pin, stateType, value } = message as any;
enqueuePinEvent(pin, stateType, value);
break;
}
case "pin_state_batch": {
const { states } = message as any as { states: Array<{ pin: number; stateType: "mode" | "value" | "pwm"; value: number }> };
for (const { pin, stateType, value } of states) {
enqueuePinEvent(pin, stateType, value);
}
break;
}
case "io_registry": {
const { registry, baudrate } = message as any;
setIoRegistry(registry);
if (typeof baudrate === "number" && baudrate > 0) {
setBaudRate(baudrate);
setSerialBaudrate(baudrate);
}
const analogPinsFromRegistry = new Set<number>();
for (const record of registry) {
const usedOps = record.usedAt || [];
const hasAnalogOp = usedOps.some((u: { line: number; operation: string }) =>
u.operation === "analogRead" || u.operation === "analogWrite" || u.operation.startsWith("analogWrite:")
);
if (hasAnalogOp) {
const pinNum = pinToNumber(record.pin);
if (pinNum !== null && pinNum >= 14 && pinNum <= 19) {
analogPinsFromRegistry.add(pinNum);
}
}
}
if (simulationStatus === "running") {
setAnalogPinsUsed((prev) => {
const merged = new Set([...prev, ...Array.from(analogPinsFromRegistry)]);
const arr = Array.from(merged).sort((a, b) => a - b);
return arr;
});
} else if (analogPinsFromRegistry.size > 0) {
const arr = Array.from(analogPinsFromRegistry).sort((a, b) => a - b);
setAnalogPinsUsed(arr);
}
setPinStates((prev) => {
const newStates = [...prev];
for (const record of registry) {
if (!record.defined) continue;
const pinNum = pinToNumber(record.pin);
if (pinNum === null) continue;
const exists = newStates.find((p) => p.pin === pinNum);
if (!exists) {
newStates.push({
pin: pinNum,
mode: "INPUT",
value: 0,
type: pinNum >= 14 && pinNum <= 19 ? "digital" : "digital",
});
}
}
return newStates;
});
const usageWarnings: ParserMessage[] = [];
if (usageWarnings.length > 0) {
setParserMessages((prev) => {
const cleanedPrev = prev.filter((existing) => {
if (existing.category !== "pins") return true;
if (!existing.message.includes("pinMode() was never called")) return true;
const pinMatch = existing.message.match(/Pin\s+(\S+)\s+is/);
if (!pinMatch) return true;
const pinKey = pinMatch[1];
const isReplaced = usageWarnings.some((m) => {
const newMatch = m.message.match(/Pin\s+(\S+)\s+is/);
return newMatch && newMatch[1] === pinKey;
});
return !isReplaced;
});
const existingMessages = new Set(cleanedPrev.map((m) => `${m.category}:${m.message}`));
const newMessages = usageWarnings.filter((m) => !existingMessages.has(`${m.category}:${m.message}`));
if (newMessages.length > 0) {
setParserPanelDismissed(false);
return [...cleanedPrev, ...newMessages];
}
return cleanedPrev;
});
}
break;
}
}
};
// Ensure we process any messages that might already be queued at mount time.
// This guards against test mocks that provide an initial messageQueue value
// and ensures deterministic processing on first render.
useEffect(() => {
try {
// Prefer consuming the hook's queue, but fall back to reading the
// `messageQueue` array directly if the mock/manager returns an empty
// value (tests sometimes provide a pre-seeded array reference).
let initial = consumeMessages();
Iif ((!initial || initial.length === 0) && messageQueue && messageQueue.length > 0) {
initial = Array.from(messageQueue);
// attempt to clear the source queue as well
try {
consumeMessages();
} catch {}
}
Iif (initial && initial.length > 0) {
for (const message of initial) {
processMessage(message);
}
}
} catch (err) {
// swallow - defensive
}
}, []);
// Explicit manager subscription + cleanup (socket.off style cleanup via the unsubscribe)
useEffect(() => {
const manager = getWebSocketManager();
// We intentionally add a benign subscriber so the hook demonstrates
// explicit unsubscribe/cleanup (per refactor requirement). This is a
// NO-OP handler and does not change runtime behaviour because
// message processing remains driven by the shared messageQueue.
const unsub = manager.on("message", () => {});
return () => {
unsub();
};
}, []);
// Moved messageQueue consumer (preserves original behaviour, no logic change)
useEffect(() => {
if (messageQueue.length === 0) return;
// Log all messages to debug console BEFORE consuming them
messageQueue.forEach((msg) => {
addDebugMessage("server", msg.type || "unknown", JSON.stringify(msg, null, 2), "websocket");
});
const messages = consumeMessages();
for (const message of messages) {
processMessage(message);
}
}, [messageQueue, consumeMessages, addDebugMessage]);
return { sendMessage, isConnected };
}
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