feat: add referral user count (#7233)

* feat: add referral user count

* feat: add referrals leaderboard

* fix: update UI

* Update referral design

* Update invite friends UI

* Add leaderboard page

* Update leaderboard page

---------

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

src/api/leaderboard.ts

@@ -20,6 +20,10 @@ export type ListLeaderboardStatsResponse = {
   githubContributors: {
     currentMonth: LeaderboardUserDetails[];
   };
+  referrals: {
+    currentMonth: LeaderboardUserDetails[];
+    lifetime: LeaderboardUserDetails[];
+  };
 };
 
 export function leaderboardApi(context: APIContext) {

src/components/AccountStreak/AccountStreak.tsx

@@ -2,7 +2,7 @@ import { useEffect, useRef, useState } from 'react';
 import { isLoggedIn } from '../../lib/jwt';
 import { httpGet } from '../../lib/http';
 import { useToast } from '../../hooks/use-toast';
-import { Flame, X, Zap, ZapOff } from 'lucide-react';
+import { Zap, ZapOff } from 'lucide-react';
 import { useOutsideClick } from '../../hooks/use-outside-click';
 import { StreakDay } from './StreakDay';
 import {
@@ -11,15 +11,8 @@ import {
 } from '../../stores/page.ts';
 import { useStore } from '@nanostores/react';
 import { cn } from '../../lib/classname.ts';
-import { $accountStreak } from '../../stores/streak.ts';
-
-type StreakResponse = {
-  count: number;
-  longestCount: number;
-  previousCount?: number | null;
-  firstVisitAt: Date;
-  lastVisitAt: Date;
-};
+import { $accountStreak, type StreakResponse } from '../../stores/streak.ts';
+import { InviteFriends } from './InviteFriends.tsx';
 
 type AccountStreakProps = {};
 
@@ -184,11 +177,10 @@ export function AccountStreak(props: AccountStreakProps) {
             <p className="-mt-[0px] mb-[1.5px] text-center text-xs tracking-wide text-slate-500">
               Visit every day to keep your streak going!
             </p>
-            <p className='text-xs mt-1.5 text-center'>
-              <a href="/leaderboard" className="text-purple-400 hover:underline underline-offset-2">
-                See how you compare to others
-              </a>
-            </p>
+
+            <InviteFriends
+              refByUserCount={accountStreak?.refByUserCount || 0}
+            />
           </div>
         </div>
       )}

src/components/AccountStreak/InviteFriends.tsx

@@ -0,0 +1,92 @@
+import { Copy, Heart } from 'lucide-react';
+import { useAuth } from '../../hooks/use-auth';
+import { useCopyText } from '../../hooks/use-copy-text';
+import { cn } from '../../lib/classname';
+import { CheckIcon } from '../ReactIcons/CheckIcon';
+import {TrophyEmoji} from "../ReactIcons/TrophyEmoji.tsx";
+
+type InviteFriendsProps = {
+  refByUserCount: number;
+};
+
+export function InviteFriends(props: InviteFriendsProps) {
+  const { refByUserCount } = props;
+
+  const user = useAuth();
+  const { copyText, isCopied } = useCopyText();
+
+  const referralLink = new URL(
+    `/signup?rc=${user?.id}`,
+    import.meta.env.DEV ? 'http://localhost:3000' : 'https://roadmap.sh',
+  ).toString();
+
+  return (
+    <div className="-mx-4 mt-6 flex flex-col border-t border-dashed border-t-slate-700 px-4 pt-5 text-center text-sm">
+      <p className="font-medium text-slate-500">
+        Invite people to join roadmap.sh
+      </p>
+      <div className="my-4 flex flex-col items-center gap-3.5 rounded-lg bg-slate-900/40 pb-4 pt-5">
+        <div className="flex flex-row items-center justify-center gap-1.5">
+          {Array.from({ length: 10 }).map((_, index) => (
+            <Heart
+              key={index}
+              className={cn(
+                'size-[20px] fill-current',
+                index < refByUserCount ? 'text-yellow-300' : 'text-slate-700',
+                refByUserCount === 0 && index === 0 ? 'text-slate-500' : '',
+              )}
+            />
+          ))}
+        </div>
+        {refByUserCount === 0 && (
+          <p className="text-slate-500">You haven't invited anyone yet.</p>
+        )}
+
+        {refByUserCount > 0 && refByUserCount < 10 && (
+          <p className="text-slate-500">{refByUserCount} of 10 users joined</p>
+        )}
+
+        {refByUserCount >= 10 && (
+          <p className="text-slate-500">
+            🎉 You've invited {refByUserCount} users
+          </p>
+        )}
+      </div>
+      <p className="leading-normal text-slate-500">
+        Share{' '}
+        <button
+          onClick={() => {
+            copyText(referralLink);
+          }}
+          className={cn(
+            'rounded-md bg-slate-700 px-1.5 py-[0.5px] text-slate-300 hover:bg-slate-600',
+            {
+              'bg-green-500 text-black hover:bg-green-500': isCopied,
+            },
+          )}
+        >
+          {!isCopied ? 'this link' : 'the copied link'}{' '}
+          {!isCopied && (
+            <Copy
+              className="relative -top-[1.25px] inline-block size-3"
+              strokeWidth={3}
+            />
+          )}
+          {isCopied && (
+            <CheckIcon additionalClasses="relative -top-[1.25px] inline-block size-3" />
+          )}
+        </button>{' '}
+        with anyone you think would benefit from roadmap.sh
+      </p>
+
+      <p className="mt-6 text-center text-xs">
+        <a
+          href="/leaderboard"
+          className="text-purple-400 underline-offset-2 hover:underline"
+        >
+          See how you rank on the leaderboard
+        </a>
+      </p>
+    </div>
+  );
+}

src/components/AuthenticationFlow/EmailSignupForm.tsx

@@ -1,5 +1,7 @@
-import { type FormEvent, useState } from 'react';
+import { type FormEvent, useEffect, useState } from 'react';
 import { httpPost } from '../../lib/http';
+import { deleteUrlParam, getUrlParams } from '../../lib/browser';
+import { isLoggedIn, setAIReferralCode } from '../../lib/jwt';
 
 type EmailSignupFormProps = {
   isDisabled?: boolean;
@@ -9,6 +11,9 @@ type EmailSignupFormProps = {
 export function EmailSignupForm(props: EmailSignupFormProps) {
   const { isDisabled, setIsDisabled } = props;
 
+  const { rc: referralCode } = getUrlParams() as {
+    rc?: string;
+  };
   const [email, setEmail] = useState('');
   const [password, setPassword] = useState('');
   const [name, setName] = useState('');
@@ -47,6 +52,16 @@ export function EmailSignupForm(props: EmailSignupFormProps) {
     )}`;
   };
 
+  useEffect(() => {
+    if (!referralCode || isLoggedIn()) {
+      deleteUrlParam('rc');
+      return;
+    }
+
+    setAIReferralCode(referralCode);
+    deleteUrlParam('rc');
+  }, []);
+
   return (
     <form className="flex w-full flex-col gap-2" onSubmit={onSubmit}>
       <label htmlFor="name" className="sr-only">

src/components/Leaderboard/LeaderboardPage.tsx

@@ -4,7 +4,7 @@ import type {
   ListLeaderboardStatsResponse,
 } from '../../api/leaderboard';
 import { cn } from '../../lib/classname';
-import { FolderKanban, GitPullRequest, Users2, Zap } from 'lucide-react';
+import { FolderKanban, GitPullRequest, Users, Users2, Zap } from 'lucide-react';
 import { TrophyEmoji } from '../ReactIcons/TrophyEmoji';
 import { SecondPlaceMedalEmoji } from '../ReactIcons/SecondPlaceMedalEmoji';
 import { ThirdPlaceMedalEmoji } from '../ReactIcons/ThirdPlaceMedalEmoji';
@@ -59,6 +59,23 @@ export function LeaderboardPage(props: LeaderboardPageProps) {
               },
             ]}
           />
+          <LeaderboardLane
+            title="Most Referrals"
+            tabs={[
+              {
+                title: 'This Month',
+                users: stats.referrals.currentMonth,
+                emptyIcon: <Users className="size-16 text-gray-300" />,
+                emptyText: 'No referrals this month',
+              },
+              {
+                title: 'Lifetime',
+                users: stats.referrals.lifetime,
+                emptyIcon: <Users className="size-16 text-gray-300" />,
+                emptyText: 'No referrals yet',
+              },
+            ]}
+          />
           <LeaderboardLane
             title="Top Contributors"
             subtitle="Past 2 weeks"
@@ -97,15 +114,17 @@ function LeaderboardLane(props: LeaderboardLaneProps) {
   return (
     <div className="flex min-h-[450px] flex-col overflow-hidden rounded-xl border bg-white shadow-sm">
       <div className="mb-3 flex items-center justify-between gap-2 px-3 py-3">
-        <h3 className="text-base font-medium">
+        <h3 className="text-sm font-medium">
           {title}{' '}
           {subtitle && (
-            <span className="text-sm font-normal text-gray-400 ml-1">{subtitle}</span>
+            <span className="ml-1 text-sm font-normal text-gray-400">
+              {subtitle}
+            </span>
           )}
         </h3>
 
         {tabs.length > 1 && (
-          <div className="flex items-center gap-2">
+          <div className="flex items-center gap-1">
             {tabs.map((tab) => {
               const isActive = tab === activeTab;
 
@@ -114,10 +133,10 @@ function LeaderboardLane(props: LeaderboardLaneProps) {
                   key={tab.title}
                   onClick={() => setActiveTab(tab)}
                   className={cn(
-                    'text-sm font-medium underline-offset-2 transition-colors',
+                    'text-xs transition-colors py-0.5 px-2 rounded-full',
                     {
-                      'text-black underline': isActive,
-                      'text-gray-400 hover:text-gray-600': !isActive,
+                      'text-white bg-black': isActive,
+                      'hover:bg-gray-200': !isActive,
                     },
                   )}
                 >

src/stores/streak.ts

@@ -6,6 +6,7 @@ export type StreakResponse = {
   previousCount?: number | null;
   firstVisitAt: Date;
   lastVisitAt: Date;
+  refByUserCount: number;
 };
 
 export const $accountStreak = atom<StreakResponse | undefined>();