(wip): add reactions

(qol): update todo

packages/chat/package.json

@@ -22,12 +22,13 @@
     "@tanstack/react-virtual": "^3.0.0",
     "@tensamin/crypto": "workspace:*",
     "@tensamin/markdown": "workspace:*",
+    "@tensamin/mtp": "workspace:*",
     "@tensamin/shared": "workspace:*",
     "@tensamin/storage": "workspace:*",
-    "@tensamin/mtp": "workspace:*",
     "@tensamin/ui": "*",
     "@tensamin/user": "workspace:*",
     "lucide-react": "^1.14.0",
+    "motion": "^12.42.2",
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
     "zod": "^4.3.6"

packages/chat/src/components/emojiPicker.tsx

@@ -0,0 +1,29 @@
+import { Button } from "@tensamin/ui";
+import Emoji from "@tensamin/markdown/emoji";
+import { getRecentEmojis, useEmojiRanks } from "./emojiRanks";
+
+export default function EmojiPicker({
+  onSelect,
+}: {
+  onSelect: (emoji: string) => void;
+}) {
+  const { ranks } = useEmojiRanks();
+  const emojis = getRecentEmojis(ranks, 3);
+
+  return (
+    <div className="flex flex-row gap-1 p-1">
+      {emojis.map((emoji) => (
+        <Button
+          key={emoji}
+          aria-label={`Select ${emoji}`}
+          className="h-10 w-10 p-0"
+          onClick={() => onSelect(emoji)}
+          type="button"
+          variant="ghost"
+        >
+          <Emoji shortcode={emoji} />
+        </Button>
+      ))}
+    </div>
+  );
+}

packages/chat/src/components/emojiRanks.ts

@@ -0,0 +1,95 @@
+import { useStorage } from "@tensamin/storage/context";
+import { useCallback, useEffect, useState } from "react";
+import { normalizeShortcode } from "@tensamin/markdown/emoji";
+
+const RANKS_CHANGED_EVENT = "tensamin-reaction-ranks-changed";
+let recordQueue = Promise.resolve();
+
+function normalizeRanks(ranks: Record<string, number>) {
+  return Object.entries(ranks).reduce<Record<string, number>>(
+    (normalized, [value, frequency]) => {
+      const shortcode = normalizeShortcode(value);
+      if (!shortcode || !Number.isFinite(frequency) || frequency <= 0) {
+        return normalized;
+      }
+
+      normalized[shortcode] = (normalized[shortcode] ?? 0) + frequency;
+      return normalized;
+    },
+    {},
+  );
+}
+
+function rankedEmojis(ranks: Record<string, number>) {
+  return Object.entries(ranks)
+    .filter(
+      ([emoji, frequency]) =>
+        normalizeShortcode(emoji) !== undefined &&
+        Number.isFinite(frequency) &&
+        frequency > 0,
+    )
+    .sort(([emojiA, frequencyA], [emojiB, frequencyB]) =>
+      frequencyB === frequencyA
+        ? emojiA.localeCompare(emojiB)
+        : frequencyB - frequencyA,
+    )
+    .flatMap(([emoji]) => {
+      const shortcode = normalizeShortcode(emoji);
+      return shortcode ? [shortcode] : [];
+    });
+}
+
+export function getRecentEmojis(ranks: Record<string, number>, amount: number) {
+  return rankedEmojis(ranks).slice(0, amount);
+}
+
+export function useEmojiRanks() {
+  const { load, save } = useStorage();
+  const [ranks, setRanks] = useState<Record<string, number>>({});
+
+  useEffect(() => {
+    void load("reactions").then((storedRanks) => {
+      const normalized = normalizeRanks(storedRanks);
+      setRanks(normalized);
+      if (JSON.stringify(normalized) !== JSON.stringify(storedRanks)) {
+        void save("reactions", normalized);
+      }
+    });
+
+    function handleRanksChanged(event: Event) {
+      setRanks((event as CustomEvent<Record<string, number>>).detail);
+    }
+
+    window.addEventListener(RANKS_CHANGED_EVENT, handleRanksChanged);
+    return () =>
+      window.removeEventListener(RANKS_CHANGED_EVENT, handleRanksChanged);
+  }, [load, save]);
+
+  return { ranks };
+}
+
+export function useRecordEmojiUse() {
+  const { load, save } = useStorage();
+
+  return useCallback(
+    (emoji: string) => {
+      const shortcode = normalizeShortcode(emoji);
+      if (!shortcode) return;
+
+      recordQueue = recordQueue
+        .catch(() => undefined)
+        .then(async () => {
+          const normalized = normalizeRanks(await load("reactions"));
+          const next = {
+            ...normalized,
+            [shortcode]: (normalized[shortcode] ?? 0) + 1,
+          };
+          await save("reactions", next);
+          window.dispatchEvent(
+            new CustomEvent(RANKS_CHANGED_EVENT, { detail: next }),
+          );
+        });
+    },
+    [load, save],
+  );
+}

packages/chat/src/components/input.tsx

@@ -23,6 +23,8 @@ import { encryptChatText } from "@tensamin/crypto/chatSecret";
 
 import { useSession } from "@tensamin/storage/session";
 import GifPicker from "./gifPicker";
+import EmojiPicker from "./emojiPicker";
+import { useEmojiRanks, useRecordEmojiUse } from "./emojiRanks";
 import Wrapper from "@tensamin/user/wrapper";
 import Text from "@tensamin/markdown/text";
 
@@ -48,6 +50,9 @@ export default function InputComponent({
   const { moveUserIdToTop } = useSession();
   const gifPopoverRef = useRef<HTMLDivElement>(null);
   const [gifPopoverOpen, setGifPopoverOpen] = useState(false);
+  const [emojiPopoverOpen, setEmojiPopoverOpen] = useState(false);
+  const recordUse = useRecordEmojiUse();
+  const { ranks: emojiFrequencies } = useEmojiRanks();
   const [gifPopoverSize, setGifPopoverSize] = useState<{
     width: number;
     height: number;
@@ -257,6 +262,8 @@ export default function InputComponent({
             setValue={setValue}
             onSubmit={handleSubmit}
             invertEnterBehavior={invertEnterBehavior}
+            emojiFrequencies={emojiFrequencies}
+            onEmojiSelect={recordUse}
           />
           <div className="w-full flex justify-between gap-1 p-1 pt-0">
             <div className="flex gap-1">
@@ -268,9 +275,31 @@ export default function InputComponent({
               </div>
             </div>
             <div className="flex gap-1">
-              <Button className="w-9 h-9 p-0" variant="ghost">
-                <Laugh size={20} />
-              </Button>
+              <Popover
+                open={emojiPopoverOpen}
+                onOpenChange={setEmojiPopoverOpen}
+              >
+                <PopoverTrigger
+                  render={
+                    <Button
+                      aria-label="Open emoji picker"
+                      className="w-9 h-9 p-0"
+                      variant="ghost"
+                    >
+                      <Laugh size={20} />
+                    </Button>
+                  }
+                />
+                <PopoverContent className="w-auto p-0">
+                  <EmojiPicker
+                    onSelect={(shortcode) => {
+                      setValue(`${value}${shortcode} `);
+                      recordUse(shortcode);
+                      setEmojiPopoverOpen(false);
+                    }}
+                  />
+                </PopoverContent>
+              </Popover>
               <Popover open={gifPopoverOpen} onOpenChange={setGifPopoverOpen}>
                 <PopoverTrigger
                   render={

packages/chat/src/components/message.tsx

@@ -21,6 +21,8 @@ import Input from "@tensamin/markdown/input";
 import { useChat } from "../context";
 import { encryptChatText } from "@tensamin/crypto/chatSecret";
 import { log, toast } from "@tensamin/shared/log";
+import Emoji, { normalizeShortcode } from "@tensamin/markdown/emoji";
+import { useRecordEmojiUse } from "./emojiRanks";
 
 function MessageComponent({
   grouped,
@@ -133,7 +135,15 @@ function MessageComponent({
   }, [message.Content]);
 
   // Message editing
-  const { chatSecret, editMessage, userId, deleteMessage } = useChat();
+  const {
+    addReaction,
+    chatSecret,
+    editMessage,
+    userId,
+    deleteMessage,
+    removeReaction,
+  } = useChat();
+  const recordUse = useRecordEmojiUse();
   const [editing, setEditing] = useState(false);
   const [editDraft, setEditDraft] = useState(message.Content);
   useEffect(() => {
@@ -187,6 +197,39 @@ function MessageComponent({
     ],
   );
 
+  const groupedReactions = Object.entries(
+    (message.Reactions ?? []).reduce<
+      Record<string, { count: number; reactedByMe: boolean }>
+    >((groups, item) => {
+      const reaction = normalizeShortcode(item.Reaction);
+      if (!reaction) return groups;
+
+      const group = groups[reaction] ?? {
+        count: 0,
+        reactedByMe: false,
+      };
+      group.count += 1;
+      group.reactedByMe ||= item.SenderId === ownId;
+      groups[reaction] = group;
+      return groups;
+    }, {}),
+  );
+
+  function toggleReaction(reaction: string) {
+    const reactedByMe = message.Reactions?.some(
+      (item) =>
+        normalizeShortcode(item.Reaction) === reaction &&
+        item.SenderId === ownId,
+    );
+
+    if (reactedByMe) {
+      return removeReaction(message.SendTime, reaction);
+    }
+
+    recordUse(reaction);
+    return addReaction(message.SendTime, reaction);
+  }
+
   return (
     <div
       // pt-3 is to get a gap between messages
@@ -198,6 +241,7 @@ function MessageComponent({
           hideMiniMenu={editing}
           isOwnMessage={message.SenderId === ownId}
           messageId={message.SendTime}
+          onReact={toggleReaction}
           onSetEditing={setEditing}
         >
           <div
@@ -305,6 +349,30 @@ function MessageComponent({
                 ) : (
                   <Text value={message.Content} />
                 )}
+                {groupedReactions.length > 0 && (
+                  <div className="mt-1 flex flex-wrap gap-1 pb-1">
+                    {groupedReactions.map(
+                      ([reaction, { count, reactedByMe }]) => (
+                        <Button
+                          key={reaction}
+                          aria-label={`${reactedByMe ? "Remove" : "Add"} ${reaction} reaction`}
+                          className={cn(
+                            "h-7 gap-2 rounded-lg py-3.5 px-1.5! border",
+                            reactedByMe
+                              ? "border-(--primary-foreground-alt)/40!"
+                              : "",
+                          )}
+                          onClick={() => void toggleReaction(reaction)}
+                          size="xs"
+                          variant={reactedByMe ? "subtleDefault" : "outline"}
+                        >
+                          <Emoji className="h-5 w-5" shortcode={reaction} />
+                          <span className="text-sm">{count}</span>
+                        </Button>
+                      ),
+                    )}
+                  </div>
+                )}
               </div>
             </>
           </div>
@@ -324,6 +392,8 @@ export default React.memo(MessageComponent, (prev, next) => {
     prev.message.MessageState === next.message.MessageState &&
     prev.message.failed === next.message.failed &&
     prev.message.decryptionFailed === next.message.decryptionFailed &&
+    JSON.stringify(prev.message.Reactions) ===
+      JSON.stringify(next.message.Reactions) &&
     prev.grouped === next.grouped &&
     prev.user === next.user
   );

packages/chat/src/components/messageContextMenu.tsx

@@ -15,7 +15,13 @@ import {
   DrawerContent,
   DrawerDescription,
   DrawerTitle,
+  Popover,
+  PopoverContent,
+  PopoverTrigger,
   Separator,
+  Tooltip,
+  TooltipContent,
+  TooltipTrigger,
   useIsMobile,
 } from "@tensamin/ui";
 import {
@@ -23,18 +29,23 @@ import {
   Ellipsis,
   Forward,
   Laugh,
+  Plus,
   Pen,
   Pin,
   Reply,
   Trash,
 } from "lucide-react";
 import { cloneElement, useMemo, useState, useSyncExternalStore } from "react";
+import { AnimatePresence, motion } from "motion/react";
 import type {
   MouseEvent as ReactMouseEvent,
   ReactElement,
   ReactNode,
 } from "react";
 import { useChat } from "../context";
+import Emoji from "@tensamin/markdown/emoji";
+import EmojiPicker from "./emojiPicker";
+import { getRecentEmojis, useEmojiRanks } from "./emojiRanks";
 
 async function copyText(text: string) {
   await navigator.clipboard.writeText(text);
@@ -140,8 +151,31 @@ function getMobileMenuComponents({
   };
 }
 
-function ReactionItems({ Item }: { Item: MenuComponents["Item"] }) {
-  return <Item>Cool item</Item>;
+function ReactionItems({
+  Item,
+  emojis,
+  onMore,
+  onSelect,
+}: {
+  Item: MenuComponents["Item"];
+  emojis: string[];
+  onMore: () => void;
+  onSelect: (emoji: string) => void;
+}) {
+  return (
+    <>
+      {emojis.map((emoji) => (
+        <Item key={emoji} onClick={() => onSelect(emoji)}>
+          <Emoji className="w-4.5 h-4.5" shortcode={emoji} />
+          <span>{emoji}</span>
+        </Item>
+      ))}
+      <Item onClick={onMore}>
+        <Plus className="size-4.5" />
+        <span>More reactions</span>
+      </Item>
+    </>
+  );
 }
 
 let shiftPressed = false;
@@ -190,11 +224,63 @@ function useShiftPressed() {
   );
 }
 
+let activeMiniMenuId: number | null = null;
+let clearMiniMenuTimeout: ReturnType<typeof setTimeout> | undefined;
+const miniMenuListeners = new Set<() => void>();
+
+function setActiveMiniMenu(messageId: number | null) {
+  if (clearMiniMenuTimeout !== undefined) {
+    clearTimeout(clearMiniMenuTimeout);
+    clearMiniMenuTimeout = undefined;
+  }
+  if (activeMiniMenuId === messageId) return;
+
+  activeMiniMenuId = messageId;
+  miniMenuListeners.forEach((listener) => listener());
+}
+
+function scheduleMiniMenuClose() {
+  clearMiniMenuTimeout = setTimeout(() => {
+    clearMiniMenuTimeout = undefined;
+    setActiveMiniMenu(null);
+  }, 80);
+}
+
+function useActiveMiniMenuId() {
+  return useSyncExternalStore(
+    (listener) => {
+      miniMenuListeners.add(listener);
+      return () => miniMenuListeners.delete(listener);
+    },
+    () => activeMiniMenuId,
+    () => null,
+  );
+}
+
+function MiniMenuTooltip({
+  children,
+  label,
+}: {
+  children: ReactElement;
+  label: string;
+}) {
+  return (
+    <Tooltip>
+      <TooltipTrigger render={children} />
+      <TooltipContent>{label}</TooltipContent>
+    </Tooltip>
+  );
+}
+
 function MiniMessageMenu({
   isOwnMessage,
   onDelete,
   onEdit,
   onOpenMenu,
+  onOpenPicker,
+  usePickerTrigger,
+  onReact,
+  quickReactions,
   onReply,
   shiftIsPressed,
 }: {
@@ -202,54 +288,137 @@ function MiniMessageMenu({
   onDelete: () => void;
   onEdit: () => void;
   onOpenMenu: (event: ReactMouseEvent<HTMLElement>) => void;
+  onOpenPicker: () => void;
+  usePickerTrigger: boolean;
+  onReact: (emoji: string) => void;
+  quickReactions: string[];
   onReply: () => void;
   shiftIsPressed: boolean;
 }) {
   return (
-    <Card className="absolute right-4 -top-3 opacity-0 group-hover/message-menu:opacity-100 flex flex-row justify-end gap-0! z-10 p-0! shadow-lg rounded-lg!">
-      {[0, 1, 2].map((item) => (
-        <Button key={item} variant="ghost" className="h-8 w-8">
-          {item === 0 && "👍"}
-          {item === 1 && "🔥"}
-          {item === 2 && "✅"}
-        </Button>
-      ))}
-      <Separator orientation="vertical" className="my-1" />
-      <Button variant="ghost" className="h-8 w-8">
-        <Laugh />
-      </Button>
-      <Button
-        variant="ghost"
-        className="h-8 w-8"
-        aria-label={isOwnMessage ? "Edit message" : "Reply to message"}
-        onClick={isOwnMessage ? onEdit : onReply}
-      >
-        {isOwnMessage ? <Pen /> : <Reply />}
-      </Button>
-      <Button variant="ghost" className="h-8 w-8">
-        <Forward />
-      </Button>
-      <Separator orientation="vertical" className="my-1" />
-      {isOwnMessage && shiftIsPressed ? (
-        <Button
-          variant="ghost"
-          className="h-8 w-8 text-destructive"
-          aria-label="Delete message"
-          onClick={onDelete}
-        >
-          <Trash />
-        </Button>
-      ) : (
-        <Button
-          variant="ghost"
-          className="h-8 w-8"
-          aria-label="Open message menu"
-          onClick={onOpenMenu}
-        >
-          <Ellipsis />
-        </Button>
-      )}
-    </Card>
+    <motion.div
+      layoutId="chat-mini-message-menu"
+      className="absolute right-4 -top-3 z-10"
+      initial={{ opacity: 0 }}
+      animate={{ opacity: 1 }}
+      exit={{
+        opacity: 0,
+        transition: {
+          opacity: { duration: 0.12, delay: 0.08 },
+        },
+      }}
+      transition={{
+        layout: {
+          type: "spring",
+          stiffness: 650,
+          damping: 34,
+          mass: 0.65,
+        },
+        opacity: { duration: 0.12 },
+      }}
+    >
+      <Card className="flex flex-row justify-end gap-0! rounded-lg! p-0! shadow-lg">
+        {quickReactions.map((emoji) => (
+          <MiniMenuTooltip
+            key={emoji}
+            label={emoji}
+            children={
+              <Button
+                aria-label={`React with ${emoji}`}
+                variant="ghost"
+                className="h-8 w-8 p-0!"
+                onClick={() => onReact(emoji)}
+              >
+                <Emoji className="h-5 w-5" shortcode={emoji} tooltip={false} />
+              </Button>
+            }
+          />
+        ))}
+        <Separator orientation="vertical" className="my-1" />
+        <MiniMenuTooltip
+          label="Add reaction"
+          children={
+            usePickerTrigger ? (
+              <PopoverTrigger
+                render={
+                  <Button
+                    aria-label="Add reaction"
+                    variant="ghost"
+                    className="h-8 w-8"
+                  >
+                    <Laugh />
+                  </Button>
+                }
+              />
+            ) : (
+              <Button
+                aria-label="Add reaction"
+                variant="ghost"
+                className="h-8 w-8"
+                onClick={onOpenPicker}
+              >
+                <Laugh />
+              </Button>
+            )
+          }
+        />
+        <MiniMenuTooltip
+          label={isOwnMessage ? "Edit message" : "Reply to message"}
+          children={
+            <Button
+              variant="ghost"
+              className="h-8 w-8"
+              aria-label={isOwnMessage ? "Edit message" : "Reply to message"}
+              onClick={isOwnMessage ? onEdit : onReply}
+            >
+              {isOwnMessage ? <Pen /> : <Reply />}
+            </Button>
+          }
+        />
+        <MiniMenuTooltip
+          label="Forward message"
+          children={
+            <Button
+              variant="ghost"
+              className="h-8 w-8"
+              aria-label="Forward message"
+            >
+              <Forward />
+            </Button>
+          }
+        />
+        <Separator orientation="vertical" className="my-1" />
+        {isOwnMessage && shiftIsPressed ? (
+          <MiniMenuTooltip
+            label="Delete message"
+            children={
+              <Button
+                variant="ghost"
+                className="h-8 w-8 text-destructive"
+                aria-label="Delete message"
+                onClick={onDelete}
+              >
+                <Trash />
+              </Button>
+            }
+          />
+        ) : (
+          <MiniMenuTooltip
+            label="Open message menu"
+            children={
+              <Button
+                variant="ghost"
+                className="h-8 w-8"
+                aria-label="Open message menu"
+                onClick={onOpenMenu}
+              >
+                <Ellipsis />
+              </Button>
+            }
+          />
+        )}
+      </Card>
+    </motion.div>
   );
 }
 
@@ -260,6 +429,8 @@ function MessageMenuContent({
   isOwnMessage,
   messageId,
   onAddReaction,
+  reactionEmojis,
+  onReact,
   showReactionItems = true,
   onSetEditing,
 }: {
@@ -269,6 +440,8 @@ function MessageMenuContent({
   isOwnMessage: boolean;
   messageId: number;
   onAddReaction?: () => void | Promise<void>;
+  reactionEmojis: string[];
+  onReact: (emoji: string) => void;
   showReactionItems?: boolean;
   onSetEditing: (value: boolean) => void;
 }) {
@@ -281,10 +454,17 @@ function MessageMenuContent({
     <Content>
       <Group>
         <Sub>
-          <SubTrigger onClick={onAddReaction}>Add Reaction</SubTrigger>
+          <SubTrigger onClick={showReactionItems ? undefined : onAddReaction}>
+            Add Reaction
+          </SubTrigger>
           {showReactionItems && (
             <SubContent>
-              <ReactionItems Item={Item} />
+              <ReactionItems
+                Item={Item}
+                emojis={reactionEmojis}
+                onMore={() => void onAddReaction?.()}
+                onSelect={onReact}
+              />
             </SubContent>
           )}
         </Sub>
@@ -359,6 +539,7 @@ export default function MessageContextMenu({
   hideMiniMenu = false,
   isOwnMessage,
   messageId,
+  onReact,
   onSetEditing,
 }: {
   children: ReactElement;
@@ -366,10 +547,12 @@ export default function MessageContextMenu({
   hideMiniMenu?: boolean;
   isOwnMessage: boolean;
   messageId: number;
+  onReact: (emoji: string) => void | Promise<void>;
   onSetEditing: (value: boolean) => void;
 }) {
   const isMobile = useIsMobile();
   const shiftIsPressed = useShiftPressed();
+  const activeMenuId = useActiveMiniMenuId();
   const { deleteMessage, setReplyTo } = useChat();
   const devEnabled = useMemo(
     () => Number(localStorage.getItem("log_level")) >= 3,
@@ -377,6 +560,16 @@ export default function MessageContextMenu({
   );
   const [mainDrawerOpen, setMainDrawerOpen] = useState(false);
   const [reactionDrawerOpen, setReactionDrawerOpen] = useState(false);
+  const [pickerOpen, setPickerOpen] = useState(false);
+  const { ranks } = useEmojiRanks();
+  const quickReactions = getRecentEmojis(ranks, 3);
+  const menuReactions = getRecentEmojis(ranks, 5);
+
+  function selectReaction(emoji: string) {
+    void onReact(emoji);
+    setReactionDrawerOpen(false);
+    setPickerOpen(false);
+  }
   const mainDrawerComponents = useMemo(
     () =>
       getMobileMenuComponents({
@@ -400,18 +593,28 @@ export default function MessageContextMenu({
     openMenu: (event: ReactMouseEvent<HTMLElement>) => void,
   ) {
     return (
-      <div className="group/message-menu relative w-full">
+      <div
+        className="group/message-menu relative w-full"
+        onPointerEnter={() => setActiveMiniMenu(messageId)}
+        onPointerLeave={scheduleMiniMenuClose}
+      >
         {children}
-        {!hideMiniMenu && (
-          <MiniMessageMenu
-            isOwnMessage={isOwnMessage}
-            onDelete={() => deleteMessage(messageId)}
-            onEdit={() => onSetEditing(true)}
-            onOpenMenu={openMenu}
-            onReply={() => setReplyTo(messageId)}
-            shiftIsPressed={shiftIsPressed}
-          />
-        )}
+        <AnimatePresence>
+          {!hideMiniMenu && activeMenuId === messageId && (
+            <MiniMessageMenu
+              isOwnMessage={isOwnMessage}
+              onDelete={() => deleteMessage(messageId)}
+              onEdit={() => onSetEditing(true)}
+              onOpenMenu={openMenu}
+              onOpenPicker={() => setPickerOpen(true)}
+              usePickerTrigger={!isMobile}
+              onReact={selectReaction}
+              quickReactions={quickReactions}
+              onReply={() => setReplyTo(messageId)}
+              shiftIsPressed={shiftIsPressed}
+            />
+          )}
+        </AnimatePresence>
       </div>
     );
   }
@@ -438,6 +641,8 @@ export default function MessageContextMenu({
             isOwnMessage={isOwnMessage}
             messageId={messageId}
             onAddReaction={() => setReactionDrawerOpen(true)}
+            onReact={selectReaction}
+            reactionEmojis={menuReactions}
             showReactionItems={false}
             onSetEditing={onSetEditing}
           />
@@ -449,7 +654,26 @@ export default function MessageContextMenu({
               Choose a reaction to add to this message.
             </DrawerDescription>
             <div className="p-3!">
-              <ReactionItems Item={reactionDrawerComponents.Item} />
+              <ReactionItems
+                Item={reactionDrawerComponents.Item}
+                emojis={menuReactions}
+                onMore={() => {
+                  setReactionDrawerOpen(false);
+                  setPickerOpen(true);
+                }}
+                onSelect={selectReaction}
+              />
+            </div>
+          </DrawerContent>
+        </Drawer>
+        <Drawer open={pickerOpen} onOpenChange={setPickerOpen}>
+          <DrawerContent>
+            <DrawerTitle className="sr-only">Choose an emoji</DrawerTitle>
+            <DrawerDescription className="sr-only">
+              Choose an emoji to react with.
+            </DrawerDescription>
+            <div className="p-3">
+              <EmojiPicker onSelect={selectReaction} />
             </div>
           </DrawerContent>
         </Drawer>
@@ -471,16 +695,24 @@ export default function MessageContextMenu({
   });
 
   return (
-    <ContextMenu>
-      <ContextMenuTrigger render={child} />
-      <MessageMenuContent
-        components={desktopMenuComponents}
-        content={content}
-        devEnabled={devEnabled}
-        isOwnMessage={isOwnMessage}
-        messageId={messageId}
-        onSetEditing={onSetEditing}
-      />
-    </ContextMenu>
+    <Popover open={pickerOpen} onOpenChange={setPickerOpen}>
+      <ContextMenu>
+        <ContextMenuTrigger render={child} />
+        <MessageMenuContent
+          components={desktopMenuComponents}
+          content={content}
+          devEnabled={devEnabled}
+          isOwnMessage={isOwnMessage}
+          messageId={messageId}
+          onAddReaction={() => setPickerOpen(true)}
+          onReact={selectReaction}
+          reactionEmojis={menuReactions}
+          onSetEditing={onSetEditing}
+        />
+      </ContextMenu>
+      <PopoverContent className="w-auto p-0">
+        <EmojiPicker onSelect={selectReaction} />
+      </PopoverContent>
+    </Popover>
   );
 }

packages/chat/src/context.tsx

@@ -61,7 +61,10 @@ function bytesFromProtocol(value: unknown): Uint8Array {
 
 type EditableMessage = RawMessage & { failed?: boolean };
 type MessageEdit = Partial<
-  Pick<EditableMessage, "Content" | "Edited" | "MessageState" | "failed">
+  Pick<
+    EditableMessage,
+    "Content" | "Edited" | "MessageState" | "Reactions" | "failed"
+  >
 >;
 
 function updateMessagesBySendTime<T extends EditableMessage>(
@@ -495,6 +498,91 @@ export default function Provider({ children }: { children: ReactNode }) {
     [currentChatSecret, send, userIdValue],
   );
 
+  const setReaction = useCallback(
+    async (sendTime: number, reaction: string, add: boolean) => {
+      let previousReactions: RawMessage["Reactions"];
+      let foundMessage = false;
+
+      const applyOptimisticUpdate = (message: EditableMessage) => {
+        const current = message.Reactions ?? [];
+        previousReactions = current;
+        foundMessage = true;
+
+        return add
+          ? [...current, { Reaction: reaction, SenderId: ownId }]
+          : current.filter(
+              (item) => item.Reaction !== reaction || item.SenderId !== ownId,
+            );
+      };
+
+      setLiveMessagesState((current) =>
+        current.map((message) =>
+          message.SendTime === sendTime
+            ? { ...message, Reactions: applyOptimisticUpdate(message) }
+            : message,
+        ),
+      );
+
+      const queryKey = [
+        "chat-messages",
+        String(userIdValue),
+        currentChatSecret !== null,
+      ] as const;
+      queryClient.setQueryData<InfiniteData<RawMessages>>(
+        queryKey,
+        (current) =>
+          current
+            ? {
+                ...current,
+                pages: current.pages.map((page) =>
+                  page.map((message) =>
+                    message.SendTime === sendTime
+                      ? {
+                          ...message,
+                          Reactions: applyOptimisticUpdate(message),
+                        }
+                      : message,
+                  ),
+                ),
+              }
+            : current,
+      );
+
+      try {
+        const response = await send(
+          add ? "MessageReactionAdd" : "MessageReactionRemove",
+          {
+            ChatPartnerId: userIdValue,
+            Reaction: reaction,
+            SendTime: sendTime,
+          },
+        );
+        assertProtocolSuccess(
+          add ? "MessageReactionAdd" : "MessageReactionRemove",
+          response,
+        );
+      } catch (err) {
+        if (foundMessage) {
+          editMessage(sendTime, { Reactions: previousReactions });
+        }
+        log(1, "chat", "red", "Failed to update reaction", err);
+        toast("error", "Failed to update reaction", String(err));
+      }
+    },
+    [currentChatSecret, editMessage, ownId, send, userIdValue],
+  );
+
+  const addReaction = useCallback(
+    (sendTime: number, reaction: string) =>
+      setReaction(sendTime, reaction, true),
+    [setReaction],
+  );
+  const removeReaction = useCallback(
+    (sendTime: number, reaction: string) =>
+      setReaction(sendTime, reaction, false),
+    [setReaction],
+  );
+
   const addLiveMessage = useCallback(
     (message: RawMessage) => {
       const localId =
@@ -578,6 +666,27 @@ export default function Provider({ children }: { children: ReactNode }) {
         return;
       }
 
+      if (message.type === "MessageReactionLive") {
+        const rawData = message.data as {
+          ChatPartnerId: unknown;
+          SendTime: unknown;
+        };
+        const chatPartnerId = Number(rawData.ChatPartnerId);
+        const sendTime = Number(rawData.SendTime);
+
+        if (chatPartnerId !== userIdValue || !Number.isFinite(sendTime)) return;
+
+        void send("MessageGet", { SendTime: sendTime })
+          .then((response) => {
+            assertProtocolSuccess("MessageGet", response);
+            editMessage(sendTime, { Reactions: response.data.Reactions ?? [] });
+          })
+          .catch((err) => {
+            log(1, "chat", "red", "Failed to refresh message reactions", err);
+          });
+        return;
+      }
+
       if (message.type !== "MessageState") return;
 
       const rawData = message.data as {
@@ -623,7 +732,7 @@ export default function Provider({ children }: { children: ReactNode }) {
         MessageState: nextState.MessageState,
       });
     });
-  }, [currentChatSecret, editMessage, subscribePush, userIdValue]);
+  }, [currentChatSecret, editMessage, send, subscribePush, userIdValue]);
 
   // Replys
   const [replyTo, setReplyTo] = useState<number | undefined>(undefined);
@@ -638,6 +747,8 @@ export default function Provider({ children }: { children: ReactNode }) {
           addLiveMessage,
           editMessage,
           deleteMessage,
+          addReaction,
+          removeReaction,
           clearLiveMessages,
           chatSecret: currentChatSecret,
           userId: userIdValue,
@@ -663,6 +774,8 @@ type contextType = {
   };
   editMessage: (sendTime: number, edit: MessageEdit) => void;
   deleteMessage: (sendTime: number) => void;
+  addReaction: (sendTime: number, reaction: string) => Promise<void>;
+  removeReaction: (sendTime: number, reaction: string) => Promise<void>;
   clearLiveMessages: () => void;
   chatSecret: Uint8Array | null;
   userId: number;

packages/chat/src/screen.tsx

@@ -186,34 +186,14 @@ export default function Screen() {
     return [...liveMessageChunks, ...historicalMessageChunks];
   }, [historicalMessageChunks, liveMessageChunks]);
 
-  const shouldShowConversationStart =
-    !!messagesQuery.data && !messagesQuery.hasNextPage;
-  const virtualRowCount =
-    messageChunks.length + (shouldShowConversationStart ? 1 : 0);
+  const virtualRowCount = messageChunks.length;
 
   const getItemKey = React.useCallback(
-    (index: number) => {
-      if (shouldShowConversationStart && index === messageChunks.length) {
-        return "conversation-start";
-      }
-
-      return messageChunks[index]?.key ?? index;
-    },
-    [messageChunks, shouldShowConversationStart],
+    (index: number) => messageChunks[index]?.key ?? index,
+    [messageChunks],
   );
 
-  const estimateSize = React.useCallback(
-    (index: number) => {
-      const isConversationStart =
-        shouldShowConversationStart && index === messageChunks.length;
-      if (isConversationStart) {
-        return FALLBACK_MESSAGE_HEIGHT;
-      }
-
-      return FALLBACK_MESSAGE_HEIGHT;
-    },
-    [messageChunks, shouldShowConversationStart],
-  );
+  const estimateSize = React.useCallback(() => FALLBACK_MESSAGE_HEIGHT, []);
 
   // eslint-disable-next-line react-hooks/incompatible-library
   const virtualizer = useVirtualizer({
@@ -464,32 +444,6 @@ export default function Screen() {
                 className="absolute bottom-0 left-0 h-px w-full"
               />
               {virtualizer.getVirtualItems().map((virtualRow) => {
-                if (
-                  shouldShowConversationStart &&
-                  virtualRow.index === messageChunks.length
-                ) {
-                  return (
-                    <div
-                      key="conversation-start"
-                      data-index={virtualRow.index}
-                      ref={virtualizer.measureElement}
-                      style={{
-                        position: "absolute",
-                        top: 0,
-                        left: 0,
-                        width: "100%",
-                        transform: `translateY(${verticalOffset + virtualRow.start}px)`,
-                      }}
-                    >
-                      <div className="w-full flex justify-start scale-y-[-1]">
-                        <div className="text-sm text-foreground/55 px-2.5">
-                          Conversation start
-                        </div>
-                      </div>
-                    </div>
-                  );
-                }
-
                 const chunkIndex = virtualRow.index;
                 const chunk = messageChunks[chunkIndex];
                 if (!chunk) {

packages/chat/todo.md

@@ -1,6 +1,10 @@
 - Implement context menu features
+  - Forward
+  - Pin Message
+  - Reply
 - Add default-emoji-hotkey
 - Placeholder image if media fails to load
 - Signature verifications via ed25519 key
 - Confirmation when exiting with text in the input box.
 - Add arrow up hotkey to edit last message
+- Drop any unique reactions above 10