Fix reaction burst skin tone variations

ts/components/CallReactionBurst.tsx

@@ -18,7 +18,7 @@ import { CallReactionBurstEmoji } from './CallReactionBurstEmoji';
 const LIFETIME = 3000;
 
 export type CallReactionBurstType = {
-  value: string;
+  values: Array<string>;
 };
 
 type CallReactionBurstStateType = CallReactionBurstType & {
@@ -124,10 +124,10 @@ export function CallReactionBurstProvider({
     <CallReactionBurstContext.Provider value={contextValue}>
       {createPortal(
         <div className="CallReactionBursts">
-          {bursts.map(({ value, key }) => (
+          {bursts.map(({ values, key }) => (
             <CallReactionBurstEmoji
               key={key}
-              value={value}
+              values={values}
               onAnimationEnd={() => hideBurst(key)}
             />
           ))}

ts/components/CallReactionBurstEmoji.tsx

@@ -8,7 +8,7 @@ import { v4 as uuid } from 'uuid';
 import { Emojify } from './conversation/Emojify';
 
 export type PropsType = {
-  value: string;
+  values: Array<string>;
   onAnimationEnd?: () => unknown;
 };
 
@@ -25,31 +25,36 @@ type AnimationConfig = {
   velocity: number;
 };
 
-export function CallReactionBurstEmoji({ value }: PropsType): JSX.Element {
+// values is an array of emojis, which is useful when bursting multi skin tone set of
+// emojis to get the correct representation
+export function CallReactionBurstEmoji({ values }: PropsType): JSX.Element {
   const [toY, setToY] = React.useState<number>(0);
   const fromY = -50;
 
-  const generateEmojiProps = React.useCallback(() => {
-    return {
-      key: uuid(),
-      value,
-      springConfig: {
-        mass: random(10, 20),
-        tension: random(45, 60),
-        friction: random(20, 60),
-        clamp: true,
-        precision: 0,
-        velocity: -0.01,
-      },
-      fromX: random(0, 20),
-      toX: random(-30, 300),
-      fromY,
-      toY,
-      toScale: random(1, 2.5, true),
-      fromRotate: random(-45, 45),
-      toRotate: random(-45, 45),
-    };
-  }, [fromY, toY, value]);
+  const generateEmojiProps = React.useCallback(
+    (index: number) => {
+      return {
+        key: uuid(),
+        value: values[index % values.length],
+        springConfig: {
+          mass: random(10, 20),
+          tension: random(45, 60),
+          friction: random(20, 60),
+          clamp: true,
+          precision: 0,
+          velocity: -0.01,
+        },
+        fromX: random(0, 20),
+        toX: random(-30, 300),
+        fromY,
+        toY,
+        toScale: random(1, 2.5, true),
+        fromRotate: random(-45, 45),
+        toRotate: random(-45, 45),
+      };
+    },
+    [fromY, toY, values]
+  );
 
   // Calculate target Y position before first render. Emojis need to animate Y upwards
   // by the value of the container's top, plus the emoji's maximum height.
@@ -59,12 +64,12 @@ export function CallReactionBurstEmoji({ value }: PropsType): JSX.Element {
       const { top } = containerRef.current.getBoundingClientRect();
       const calculatedToY = -top;
       setToY(calculatedToY);
-      setEmojis([{ ...generateEmojiProps(), toY: calculatedToY }]);
+      setEmojis([{ ...generateEmojiProps(0), toY: calculatedToY }]);
     }
   }, [generateEmojiProps]);
 
   const [emojis, setEmojis] = React.useState<Array<AnimatedEmojiProps>>([
-    generateEmojiProps(),
+    generateEmojiProps(0),
   ]);
 
   React.useEffect(() => {
@@ -74,14 +79,14 @@ export function CallReactionBurstEmoji({ value }: PropsType): JSX.Element {
         if (emojiCount + 1 >= NUM_EMOJIS) {
           clearInterval(timer);
         }
-        return [...curEmojis, generateEmojiProps()];
+        return [...curEmojis, generateEmojiProps(emojiCount)];
       });
     }, DELAY_BETWEEN_EMOJIS);
 
     return () => {
       clearInterval(timer);
     };
-  }, [fromY, toY, value, generateEmojiProps]);
+  }, [fromY, toY, values, generateEmojiProps]);
 
   return (
     <div className="CallReactionBurstEmoji" ref={containerRef}>

ts/components/CallScreen.stories.tsx

@@ -653,9 +653,9 @@ export function GroupCallReactions(): JSX.Element {
     })
   );
 
-  const activeCall = useReactionsEmitter(
-    props.activeCall as ActiveGroupCallType
-  );
+  const activeCall = useReactionsEmitter({
+    activeCall: props.activeCall as ActiveGroupCallType,
+  });
 
   return <CallScreen {...props} activeCall={activeCall} />;
 }
@@ -670,11 +670,30 @@ export function GroupCallReactionsSpam(): JSX.Element {
     })
   );
 
-  const activeCall = useReactionsEmitter(
-    props.activeCall as ActiveGroupCallType,
-    250
+  const activeCall = useReactionsEmitter({
+    activeCall: props.activeCall as ActiveGroupCallType,
+    frequency: 250,
+  });
+
+  return <CallScreen {...props} activeCall={activeCall} />;
+}
+
+export function GroupCallReactionsSkinTones(): JSX.Element {
+  const remoteParticipants = allRemoteParticipants.slice(0, 3);
+  const [props] = React.useState(
+    createProps({
+      callMode: CallMode.Group,
+      remoteParticipants,
+      viewMode: CallViewMode.Overflow,
+    })
   );
 
+  const activeCall = useReactionsEmitter({
+    activeCall: props.activeCall as ActiveGroupCallType,
+    frequency: 500,
+    emojis: ['👍', '👍🏻', '👍🏼', '👍🏽', '👍🏾', '👍🏿', '❤️', '😂', '😮', '😢'],
+  });
+
   return <CallScreen {...props} activeCall={activeCall} />;
 }
 
@@ -701,11 +720,17 @@ export function GroupCallReactionsManyInOrder(): JSX.Element {
   return <CallScreen {...props} />;
 }
 
-function useReactionsEmitter(
-  activeCall: ActiveGroupCallType,
+function useReactionsEmitter({
+  activeCall,
   frequency = 2000,
-  removeAfter = 5000
-) {
+  removeAfter = 5000,
+  emojis = DEFAULT_PREFERRED_REACTION_EMOJI,
+}: {
+  activeCall: ActiveGroupCallType;
+  frequency?: number;
+  removeAfter?: number;
+  emojis?: Array<string>;
+}) {
   const [call, setCall] = React.useState(activeCall);
   React.useEffect(() => {
     const interval = setInterval(() => {
@@ -725,7 +750,7 @@ function useReactionsEmitter(
           {
             timestamp: timeNow,
             demuxId,
-            value: sample(DEFAULT_PREFERRED_REACTION_EMOJI) as string,
+            value: sample(emojis) as string,
           },
         ];
 
@@ -736,7 +761,7 @@ function useReactionsEmitter(
       });
     }, frequency);
     return () => clearInterval(interval);
-  }, [frequency, removeAfter, call]);
+  }, [emojis, frequency, removeAfter, call]);
   return call;
 }
 

ts/components/CallScreen.tsx

@@ -87,6 +87,7 @@ import {
 } from './CallReactionBurst';
 import { isGroupOrAdhocActiveCall } from '../util/isGroupOrAdhocCall';
 import { assertDev } from '../util/assert';
+import { emojiToData } from './emoji/lib';
 
 export type PropsType = {
   activeCall: ActiveCallType;
@@ -1048,7 +1049,13 @@ function useReactionsToast(props: UseReactionsToastType): void {
   const reactionsShown = useRef<
     Map<
       string,
-      { value: string; isBursted: boolean; expireAt: number; demuxId: number }
+      {
+        value: string;
+        originalValue: string;
+        isBursted: boolean;
+        expireAt: number;
+        demuxId: number;
+      }
     >
   >(new Map());
   const burstsShown = useRef<Map<string, number>>(new Map());
@@ -1094,8 +1101,13 @@ function useReactionsToast(props: UseReactionsToastType): void {
         recentBurstTime &&
         recentBurstTime + REACTIONS_BURST_TRAILING_WINDOW > time
       );
+      // Normalize skin tone emoji to calculate burst threshold, but save original
+      // value to show in the burst animation
+      const emojiData = emojiToData(value);
+      const normalizedValue = emojiData?.unified ?? value;
       reactionsShown.current.set(key, {
-        value,
+        value: normalizedValue,
+        originalValue: value,
         isBursted,
         expireAt: timestamp + REACTIONS_BURST_WINDOW,
         demuxId,
@@ -1158,6 +1170,7 @@ function useReactionsToast(props: UseReactionsToastType): void {
       }
 
       burstsShown.current.set(value, time);
+      const values: Array<string> = [];
       reactionKeys.forEach(key => {
         const reactionShown = reactionsShown.current.get(key);
         if (!reactionShown) {
@@ -1165,8 +1178,9 @@ function useReactionsToast(props: UseReactionsToastType): void {
         }
 
         reactionShown.isBursted = true;
+        values.push(reactionShown.originalValue);
       });
-      showBurst({ value });
+      showBurst({ values });
 
       if (burstsShown.current.size >= REACTIONS_BURST_MAX_IN_SHORT_WINDOW) {
         break;