Merge pull request #3 from tldraw/lu/socket

Websocket

src/components/live-image.tsx

@@ -13,12 +13,16 @@ import {
 import { blobToDataUri } from "@/utils/blob";
 import { debounce } from "@/utils/debounce";
 import * as fal from "@fal-ai/serverless-client";
-import { useCallback, useEffect, useRef, useState } from "react";
+import { useCallback, useEffect, useMemo, useRef, useState } from "react";
+import result from "postcss/lib/result";
 
 // See https://www.fal.ai/models/latent-consistency-sd
 
 const LatentConsistency = "110602490-lcm-sd15-i2i";
 
+const DEBOUNCE_TIME = 0.1; // Adjust as needed
+const URL = "wss://110602490-lcm-sd15-i2i.gateway.alpha.fal.ai/ws";
+
 type Input = {
   prompt: string;
   image_url: string;
@@ -60,6 +64,75 @@ export class LiveImageShapeUtil extends FrameShapeUtil {
     const startedIteration = useRef<number>(0);
     const finishedIteration = useRef<number>(0);
 
+    //===== SOCKET =====//
+    const webSocketRef = useRef<WebSocket | null>(null);
+    const isReconnecting = useRef(false);
+
+    const connect = useCallback(() => {
+      webSocketRef.current = new WebSocket(URL);
+      webSocketRef.current.onopen = () => {
+        console.log("WebSocket Open");
+      };
+
+      webSocketRef.current.onclose = () => {
+        console.log("WebSocket Close");
+      };
+
+      webSocketRef.current.onerror = (error) => {
+        console.error("WebSocket Error:", error);
+      };
+
+      webSocketRef.current.onmessage = (message) => {
+        try {
+          const data = JSON.parse(message.data);
+          console.log("WebSocket Message:", data);
+          if (data.images && data.images.length > 0) {
+            setImage(data.images[0].url);
+          }
+        } catch (e) {
+          console.error("Error parsing the WebSocket response:", e);
+        }
+      };
+    }, []);
+
+    const disconnect = useCallback(() => {
+      webSocketRef.current?.close();
+    }, []);
+
+    const sendMessage = useCallback(
+      async (message: string) => {
+        if (
+          !isReconnecting.current &&
+          webSocketRef.current?.readyState !== WebSocket.OPEN
+        ) {
+          isReconnecting.current = true;
+          connect();
+        }
+
+        if (
+          isReconnecting.current &&
+          webSocketRef.current?.readyState !== WebSocket.OPEN
+        ) {
+          await new Promise<void>((resolve) => {
+            const checkConnection = setInterval(() => {
+              if (webSocketRef.current?.readyState === WebSocket.OPEN) {
+                clearInterval(checkConnection);
+                resolve();
+              }
+            }, 100);
+          });
+          isReconnecting.current = false;
+        }
+        webSocketRef.current?.send(message);
+      },
+      [connect]
+    );
+
+    const sendCurrentData = useMemo(() => {
+      return debounce(sendMessage, DEBOUNCE_TIME);
+    }, [sendMessage]);
+    //===========//
+
     // eslint-disable-next-line react-hooks/exhaustive-deps
     const onDrawingChange = useCallback(
       debounce(async () => {
@@ -100,27 +173,39 @@ export class LiveImageShapeUtil extends FrameShapeUtil {
         const prompt =
           editor.getShape<TLFrameShape>(shape.id)?.props.name ?? "";
         const imageDataUri = await blobToDataUri(image);
+
+        const request = {
+          image_url: imageDataUri,
+          prompt,
+          sync_mode: true,
+          strength: 0.7,
+          seed: 42, // TODO make this configurable in the UI
+          enable_safety_checks: false,
+        };
+
+        sendCurrentData(JSON.stringify(request));
+
         if (iteration <= finishedIteration.current) return;
 
-        const result = await fal.run<Input, Output>(LatentConsistency, {
-          input: {
-            image_url: imageDataUri,
-            prompt,
-            sync_mode: true,
-            strength: 0.6,
-            seed: 42, // TODO make this configurable in the UI
-            enable_safety_checks: false,
-          },
-          // Disable auto-upload so we can submit the data uri of the image as is
-          autoUpload: true,
-        });
+        // const result = await fal.run<Input, Output>(LatentConsistency, {
+        //   input: {
+        //     image_url: imageDataUri,
+        //     prompt,
+        //     sync_mode: true,
+        //     strength: 0.6,
+        //     seed: 42, // TODO make this configurable in the UI
+        //     enable_safety_checks: false,
+        //   },
+        //   // Disable auto-upload so we can submit the data uri of the image as is
+        //   autoUpload: true,
+        // });
         if (iteration <= finishedIteration.current) return;
 
         finishedIteration.current = iteration;
-        if (result && result.images.length > 0) {
-          setImage(result.images[0].url);
-        }
-      }, 32),
+        // if (result && result.images.length > 0) {
+        //   setImage(result.images[0].url);
+        // }
+      }, 0),
       []
     );