From f4088691c5dc7d407d19f6681801d62b047c1fd9 Mon Sep 17 00:00:00 2001
From: Alois <aloisianer@proton.me>
Date: Wed, 3 Jun 2026 16:14:39 +0200
Subject: [PATCH] (feat): improve profile popup in the navbar, add shared code
 to that popup

---
 apps/web/src/components/modals/profile.tsx | 103 ++++++++++++++++++---
 apps/web/src/components/navbar.tsx         |   4 +-
 packages/shared/package.json               |   1 +
 packages/shared/src/code.ts                |  20 ++++
 4 files changed, 114 insertions(+), 14 deletions(-)
 create mode 100644 packages/shared/src/code.ts

diff --git a/apps/web/src/components/modals/profile.tsx b/apps/web/src/components/modals/profile.tsx
index 6a31e36..c46e4ef 100644
--- a/apps/web/src/components/modals/profile.tsx
+++ b/apps/web/src/components/modals/profile.tsx
@@ -1,8 +1,62 @@
 import type { User } from "@tensamin/user/context";
-import { Avatar, AvatarFallback, AvatarImage } from "@tensamin/ui";
+import {
+  Avatar,
+  AvatarFallback,
+  AvatarImage,
+  Button,
+  Tooltip,
+  TooltipContent,
+  TooltipTrigger,
+} from "@tensamin/ui";
+import { toLossySixDigitCode } from "@tensamin/shared/code";
 import Text from "@tensamin/markdown/text";
+import { ChevronDown, ChevronUp, Info } from "lucide-react";
+import { useEffect, useState } from "react";
+import { useCrypto } from "@tensamin/crypto/context";
+import { useStorage } from "@tensamin/storage/context";
+import { useUser } from "@tensamin/user/context";
 
 export default function Profile({ user }: { user: User }) {
+  const [showAdvancedInformation, setShowAdvancedInformation] = useState(false);
+  const [sharedSecret, setSharedSecret] = useState("");
+
+  const { getSharedSecret } = useCrypto();
+  const { load } = useStorage();
+  const { get } = useUser();
+
+  useEffect(() => {
+    let active = true;
+
+    void (async () => {
+      try {
+        const ownId = await load("user_id");
+        const privateKey = await load("private_key");
+        const ownData = await get(ownId);
+        const secret = await getSharedSecret(
+          privateKey,
+          ownData.public_key,
+          user.public_key,
+        );
+
+        if (active) {
+          setSharedSecret(secret);
+        }
+      } catch {
+        if (active) {
+          setSharedSecret("");
+        }
+      }
+    })();
+
+    return () => {
+      active = false;
+    };
+  }, [get, getSharedSecret, load, user.public_key]);
+
+  const sharedSecretCode = sharedSecret
+    ? toLossySixDigitCode(sharedSecret)
+    : "------";
+
   return (
     <div className="flex flex-col gap-2">
       <div className="flex gap-2  items-center">
@@ -18,17 +72,42 @@ export default function Profile({ user }: { user: User }) {
         </div>
       </div>
       <Text value={user.about || ""} />
-      <div className="flex flex-col">
-        <p className="text-muted-foreground text-xs overflow-hidden text-ellipsis whitespace-nowrap">
-          iota: {user.iota_id}
-        </p>
-        <p className="text-muted-foreground text-xs overflow-hidden text-ellipsis whitespace-nowrap">
-          user: {user.user_id}
-        </p>
-        <p className="text-muted-foreground text-xs overflow-hidden text-ellipsis whitespace-nowrap">
-          pub key: {user.public_key}
-        </p>
-      </div>
+      <Button
+        className="h-auto justify-start gap-1.5 px-0 py-1 text-base font-medium text-white no-underline hover:no-underline"
+        variant="link"
+        aria-expanded={showAdvancedInformation}
+        onClick={() => setShowAdvancedInformation((show) => !show)}
+      >
+        {showAdvancedInformation ? (
+          <ChevronUp className="size-4" />
+        ) : (
+          <ChevronDown className="size-4" />
+        )}
+        <span>Show advanced information</span>
+      </Button>
+      {showAdvancedInformation && (
+        <div className="flex flex-col">
+          <p className="text-white flex gap-1 overflow-hidden text-ellipsis whitespace-nowrap">
+            Shared Code: <code>{sharedSecretCode}</code>{" "}
+            <Tooltip>
+              <TooltipTrigger render={<Info className="size-3.5" />} />
+              <TooltipContent>
+                You can compare this code with the conversation partner to
+                validate that this chat is E2EE
+              </TooltipContent>
+            </Tooltip>
+          </p>
+          <p className="text-muted-foreground text-xs overflow-hidden text-ellipsis whitespace-nowrap">
+            Iota ID: <code>{user.iota_id}</code>
+          </p>
+          <p className="text-muted-foreground text-xs overflow-hidden text-ellipsis whitespace-nowrap">
+            User ID: <code>{user.user_id}</code>
+          </p>
+          <p className="text-muted-foreground text-xs overflow-hidden text-ellipsis whitespace-nowrap">
+            Public Key: <code>{user.public_key}</code>
+          </p>
+        </div>
+      )}
     </div>
   );
 }
diff --git a/apps/web/src/components/navbar.tsx b/apps/web/src/components/navbar.tsx
index 1c48c6c..cb83cb6 100644
--- a/apps/web/src/components/navbar.tsx
+++ b/apps/web/src/components/navbar.tsx
@@ -74,7 +74,7 @@ export default function Navbar({ forMobile }: { forMobile: boolean }) {
             userId={id}
             component={(user) =>
               isMobile ? (
-                <p className="font-medium text-md">{user?.display}</p>
+                <p className="font-medium text-[1.07rem]">{user?.display}</p>
               ) : (
                 <Popover open={userInfoOpen} onOpenChange={setUserInfoOpen}>
                   <PopoverTrigger
@@ -86,7 +86,7 @@ export default function Navbar({ forMobile }: { forMobile: boolean }) {
                           textDecorationLine: "none",
                         }}
                       >
-                        <p className="font-medium text-md">{user?.display}</p>
+                        <p className="font-medium text-[1.07rem]">{user?.display}</p>
                       </Button>
                     }
                   />
diff --git a/packages/shared/package.json b/packages/shared/package.json
index 3d06116..26c0d9f 100644
--- a/packages/shared/package.json
+++ b/packages/shared/package.json
@@ -4,6 +4,7 @@
   "version": "0.0.0",
   "type": "module",
   "exports": {
+    "./code": "./src/code.ts",
     "./data": "./src/data.ts",
     "./desktopMedia": "./src/desktopMedia.tsx",
     "./log": "./src/log.tsx",
diff --git a/packages/shared/src/code.ts b/packages/shared/src/code.ts
new file mode 100644
index 0000000..1f1d10e
--- /dev/null
+++ b/packages/shared/src/code.ts
@@ -0,0 +1,20 @@
+export function toLossySixDigitCode(input: string): string {
+  let firstHash = 0xdeadbeef;
+  let secondHash = 0x41c6ce57;
+
+  for (let index = 0; index < input.length; index += 1) {
+    const character = input.charCodeAt(index);
+
+    firstHash = Math.imul(firstHash ^ character, 2654435761);
+    secondHash = Math.imul(secondHash ^ character, 1597334677);
+  }
+
+  firstHash = Math.imul(firstHash ^ (firstHash >>> 16), 2246822507);
+  firstHash ^= Math.imul(secondHash ^ (secondHash >>> 13), 3266489909);
+  secondHash = Math.imul(secondHash ^ (secondHash >>> 16), 2246822507);
+  secondHash ^= Math.imul(firstHash ^ (firstHash >>> 13), 3266489909);
+
+  const hash = 4294967296 * (2097151 & secondHash) + (firstHash >>> 0);
+
+  return String(hash % 1_000_000).padStart(6, "0");
+}