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import { useEffect, useRef, useState, useCallback } from "react";
export default function LivePreviewFrame({
sessionId,
onScrapeComplete,
children,
}: {
sessionId: string;
children: React.ReactNode;
onScrapeComplete?: () => void;
}) {
const imgRef = useRef<HTMLImageElement>(null);
const containerRef = useRef<HTMLDivElement>(null);
const wsRef = useRef<WebSocket | null>(null);
const reconnectTimeoutRef = useRef<NodeJS.Timeout | null>(null);
const initialPositionSetRef = useRef(false);
const idleStartTimerRef = useRef<NodeJS.Timeout | null>(null);
const idleMoveTimerRef = useRef<NodeJS.Timeout | null>(null);
const [imageLoaded, setImageLoaded] = useState(false);
const [imageSrc, setImageSrc] = useState<string | null>(null);
const [isConnecting, setIsConnecting] = useState(true);
const [cursorPosition, setCursorPosition] = useState<{
x: number;
y: number;
}>({ x: 980, y: 54 });
const [targetPosition, setTargetPosition] = useState<{
x: number;
y: number;
}>({ x: 980, y: 54 });
const [isIdle, setIsIdle] = useState(false);
// Function to start the random idle movement sequence
const scheduleNextIdleMove = useCallback(() => {
if (idleMoveTimerRef.current) {
clearTimeout(idleMoveTimerRef.current);
}
const randomDelay = Math.random() * 500 + 500; // 500ms to 1000ms
idleMoveTimerRef.current = setTimeout(() => {
if (isIdle) {
// Check if still idle
const randomOffsetX = (Math.random() - 0.5) * 10; // -5 to +5 pixels
const randomOffsetY = (Math.random() - 0.5) * 10;
// Update target slightly - the main animation loop will handle the movement
setTargetPosition((prevTarget) => ({
x: prevTarget.x + randomOffsetX,
y: prevTarget.y + randomOffsetY,
}));
scheduleNextIdleMove(); // Schedule the next one
}
}, randomDelay);
}, [isIdle]);
// Effect to handle starting/stopping idle movement sequence
useEffect(() => {
if (isIdle) {
scheduleNextIdleMove();
} else {
if (idleMoveTimerRef.current) {
clearTimeout(idleMoveTimerRef.current);
}
}
// Cleanup function for this effect
return () => {
if (idleMoveTimerRef.current) {
clearTimeout(idleMoveTimerRef.current);
}
};
}, [isIdle, scheduleNextIdleMove]);
// Main Animation effect (runs continuously)
useEffect(() => {
let animationFrameId: number | null = null;
const step = () => {
setCursorPosition((currentPos) => {
const dx = targetPosition.x - currentPos.x;
const dy = targetPosition.y - currentPos.y;
const isClose = Math.abs(dx) < 0.1 && Math.abs(dy) < 0.1;
if (isClose) {
// Reached target
if (!isIdle && !idleStartTimerRef.current) {
// Only start the idle timer if not already idle and no timer is running
idleStartTimerRef.current = setTimeout(() => {
setIsIdle(true);
idleStartTimerRef.current = null; // Clear ref after timer runs
}, 5000);
}
if (animationFrameId) {
cancelAnimationFrame(animationFrameId);
animationFrameId = null;
}
return targetPosition; // Snap to final position
} else {
// Moving towards target
// If we were waiting to go idle, cancel it because we're moving again
if (idleStartTimerRef.current) {
clearTimeout(idleStartTimerRef.current);
idleStartTimerRef.current = null;
}
// Ensure idle state is false if we are moving significantly
if (isIdle) setIsIdle(false);
const nextX = currentPos.x + dx * 0.05; // Keep slow easing for now
const nextY = currentPos.y + dy * 0.05;
animationFrameId = requestAnimationFrame(step);
return { x: nextX, y: nextY };
}
});
};
// Start animation frame loop
animationFrameId = requestAnimationFrame(step);
// Cleanup function for main animation loop
return () => {
if (animationFrameId) {
cancelAnimationFrame(animationFrameId);
}
// Also clear idle start timer on unmount or if target changes causing effect re-run
if (idleStartTimerRef.current) {
clearTimeout(idleStartTimerRef.current);
}
};
}, [targetPosition, isIdle]); // Re-run main loop logic if targetPosition changes
const cleanupConnection = () => {
if (reconnectTimeoutRef.current) {
clearTimeout(reconnectTimeoutRef.current);
reconnectTimeoutRef.current = null;
}
if (wsRef.current) {
wsRef.current.close();
wsRef.current = null;
}
// Cancel animation frame (handled in effect cleanup, but good practice here too)
// Clear timers
if (idleStartTimerRef.current) clearTimeout(idleStartTimerRef.current);
if (idleMoveTimerRef.current) clearTimeout(idleMoveTimerRef.current);
// Reset state
setCursorPosition({ x: 0, y: 0 });
setTargetPosition({ x: 0, y: 0 });
setIsIdle(false);
initialPositionSetRef.current = false;
};
useEffect(() => {
if (onScrapeComplete) {
cleanupConnection();
}
}, [onScrapeComplete]);
const connect = useCallback(() => {
setIsConnecting(true);
// Clear any existing connection
if (wsRef.current) {
wsRef.current.close();
wsRef.current = null;
}
// Create new WebSocket connection
const wsUrl = `wss://api.firecrawl.dev/agent-livecast?userProvidedId=${sessionId}`;
try {
const ws = new WebSocket(wsUrl);
wsRef.current = ws;
ws.addEventListener("open", () => {
console.log("Connected - Streaming frames...");
setIsConnecting(false);
// Clear any pending reconnection attempts
if (reconnectTimeoutRef.current) {
clearTimeout(reconnectTimeoutRef.current);
reconnectTimeoutRef.current = null;
}
});
ws.addEventListener("message", (event) => {
try {
// Try to handle as raw base64 first
if (
typeof event.data === "string" &&
event.data.startsWith("data:image")
) {
setImageSrc(event.data);
return;
}
// If not direct image data, try parsing as JSON
const data = JSON.parse(event.data);
if (data.mouseCoordinates) {
let { x, y } = data.mouseCoordinates;
// --- Interrupt Idle State ---
if (idleStartTimerRef.current) {
clearTimeout(idleStartTimerRef.current);
idleStartTimerRef.current = null;
}
if (isIdle) {
setIsIdle(false);
// idleMoveTimerRef is cleared by the isIdle effect cleanup
}
// --- End Interrupt Idle State ---
if (imgRef.current && containerRef.current) {
const rect = containerRef.current.getBoundingClientRect();
const imageRect = imgRef.current.getBoundingClientRect();
// Calculate the scale factor between the original coordinates and our container
const scaleX = imageRect.width / 1920;
const scaleY =
imageRect.height > 2000 ? 0 : imageRect.height / 1080;
if (x === 0 && y === 0) {
x = 1800;
y = 100;
}
// Scale the coordinates to match our container size
const scaledX = x * scaleX;
const scaledY = y * scaleY;
setTargetPosition({ x: scaledX, y: scaledY });
if (!initialPositionSetRef.current) {
setCursorPosition({ x: scaledX, y: scaledY });
initialPositionSetRef.current = true;
}
}
}
if (data.frame) {
const img = "data:image/jpeg;base64," + data.frame;
localStorage.setItem("browserImageData", img);
setImageSrc(img);
}
} catch (e) {
// Try to use raw data as fallback if JSON parsing fails
if (typeof event.data === "string") {
setImageSrc(event.data);
}
}
});
ws.addEventListener("close", (event) => {
console.log(`Disconnected (Code: ${event.code})`);
wsRef.current = null;
// Attempt to reconnect after a delay for any unexpected closure
if (event.code !== 1000) {
reconnectTimeoutRef.current = setTimeout(() => {
if (sessionId) {
connect();
}
}, 3000); // Wait 3 seconds before reconnecting
}
});
ws.addEventListener("error", (error) => {
console.error("Connection error - Will attempt to reconnect");
});
} catch (error) {
console.error("Failed to create connection");
setIsConnecting(false);
}
}, [sessionId, isIdle]);
useEffect(() => {
// Only connect if we have a sessionId
if (sessionId) {
connect();
return () => {
cleanupConnection();
};
} else {
// Clean up any existing connection
cleanupConnection();
console.log("Waiting for session ID...");
return () => {
cleanupConnection();
};
}
}, [sessionId, connect]); // Re-run effect when sessionId changes
return (
<div
ref={containerRef}
className="relative w-full h-full flex items-center justify-center"
>
{/* Cursor */}
{cursorPosition && cursorPosition.x !== 0 && cursorPosition.y !== 0 && (
<div
className="absolute pointer-events-none transform-gpu"
style={{
left: `${cursorPosition.x}px`,
top: `${cursorPosition.y}px`,
width: "50px",
height: "50px",
backgroundImage: `url("/images/agent-cursor.svg")`,
backgroundSize: "contain",
backgroundRepeat: "no-repeat",
transform: "translate(-20%, -20%)",
zIndex: 10,
transition: isIdle ? "all 0.5s ease-out" : "all 0.1s linear",
}}
/>
)}
{/* Children fallback */}
{children && !imgRef.current?.src ? (
<div className="h-full w-full flex items-center justify-center">
{children}
</div>
) : null}
{/* Preview image - Using regular img tag for dynamic WebSocket stream */}
{imageSrc && (
<img
ref={imgRef}
id="live-frame"
src={imageSrc}
alt="Live preview"
onLoad={() => {
setImageLoaded(true);
if (onScrapeComplete) onScrapeComplete();
}}
className={`w-auto h-auto max-w-full max-h-full object-contain transform-gpu ${
!imageLoaded ? "opacity-0 scale-95" : "opacity-100 scale-100"
} transition-all duration-300 ease-out`}
style={{
backgroundColor: "#f0f0f0",
}}
/>
)}
</div>
);
}
|