feat: enhance chatbot Telegram/Discord integrations, add /remove commands and Q&A reply handling

This commit is contained in:
Shanmuga Krishnan S M
2026-08-03 08:28:47 +05:30
parent 8bd0718b72
commit d51d538ee9
20 changed files with 1243 additions and 99 deletions

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import { useState, useEffect } from 'react';
import { motion, AnimatePresence } from 'framer-motion';
import {
Trophy, Search, Plus, RefreshCw, ExternalLink, Code2,
Sparkles, Flame, Award, CheckCircle2, Shield, User, Filter, X, Clock
} from 'lucide-react';
import { getBackendUrl } from '@/lib/utils';
interface LeetcodeProfile {
id: number;
studentName: String;
leetcodeUsername: string;
department: string;
year: string;
totalSolved: number;
easySolved: number;
mediumSolved: number;
hardSolved: number;
ranking: number;
reputation: number;
lastUpdated: string;
}
const DEPARTMENTS = ['All', 'CSE', 'IT', 'AI&DS', 'ECE', 'EEE', 'MECH', 'CIVIL', 'CSBS'];
const YEARS = ['All', '1st Year', '2nd Year', '3rd Year', '4th Year'];
export default function LeetcodeLeaderboard() {
const [profiles, setProfiles] = useState<LeetcodeProfile[]>([]);
const [loading, setLoading] = useState(true);
const [searchQuery, setSearchQuery] = useState('');
const [selectedDept, setSelectedDept] = useState('All');
const [selectedYear, setSelectedYear] = useState('All');
const [showModal, setShowModal] = useState(false);
const [isSubmitting, setIsSubmitting] = useState(false);
const [isSyncing, setIsSyncing] = useState(false);
const [toastMessage, setToastMessage] = useState<string | null>(null);
// Form State
const [studentName, setStudentName] = useState('');
const [leetcodeUsername, setLeetcodeUsername] = useState('');
const [department, setDepartment] = useState('CSE');
const [year, setYear] = useState('1st Year');
useEffect(() => {
fetchLeaderboard();
}, []);
const fetchLeaderboard = async () => {
setLoading(true);
try {
const res = await fetch(getBackendUrl('/api/leetcode/leaderboard'));
if (res.ok) {
const data = await res.json();
setProfiles(data);
}
} catch (err) {
console.error('Failed to fetch leaderboard:', err);
} finally {
setLoading(false);
}
};
const handleRegister = async (e: React.FormEvent) => {
e.preventDefault();
if (!studentName.trim() || !leetcodeUsername.trim()) return;
setIsSubmitting(true);
try {
const res = await fetch(getBackendUrl('/api/leetcode/register'), {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
studentName,
leetcodeUsername,
department,
year
}),
});
if (res.ok) {
setToastMessage('✅ Profile added successfully! Fetched latest LeetCode stats.');
setShowModal(false);
setStudentName('');
setLeetcodeUsername('');
fetchLeaderboard();
} else {
const errData = await res.json();
setToastMessage(`${errData.error || 'Failed to add profile'}`);
}
} catch (err) {
setToastMessage('❌ Error connecting to server');
} finally {
setIsSubmitting(false);
setTimeout(() => setToastMessage(null), 4000);
}
};
const handleTriggerSync = async () => {
setIsSyncing(true);
try {
const res = await fetch(getBackendUrl('/api/leetcode/sync'), {
method: 'POST'
});
if (res.ok) {
setToastMessage('⚡ 24h background sync started! Requests are spaced out by 3s to prevent rate limits.');
}
} catch (err) {
setToastMessage('❌ Failed to trigger sync');
} finally {
setIsSyncing(false);
setTimeout(() => setToastMessage(null), 5000);
}
};
const filteredProfiles = profiles.filter((p) => {
const matchesSearch =
p.studentName.toLowerCase().includes(searchQuery.toLowerCase()) ||
p.leetcodeUsername.toLowerCase().includes(searchQuery.toLowerCase());
const matchesDept = selectedDept === 'All' || p.department === selectedDept;
const matchesYear = selectedYear === 'All' || p.year === selectedYear;
return matchesSearch && matchesDept && matchesYear;
});
const totalCampusSolved = profiles.reduce((acc, curr) => acc + (curr.totalSolved || 0), 0);
const topProfile = profiles.length > 0 ? profiles[0] : null;
return (
<div className="min-h-screen pt-24 pb-16 bg-[#0B0F17] text-slate-100 px-4 sm:px-6 lg:px-8">
{/* Toast Notification */}
<AnimatePresence>
{toastMessage && (
<motion.div
initial={{ opacity: 0, y: -20 }}
animate={{ opacity: 1, y: 0 }}
exit={{ opacity: 0, y: -20 }}
className="fixed top-6 right-6 z-50 px-5 py-3 rounded-xl bg-slate-800/90 border border-slate-700 backdrop-blur-md text-white font-medium shadow-2xl flex items-center gap-2"
>
{toastMessage}
</motion.div>
)}
</AnimatePresence>
<div className="max-w-7xl mx-auto space-y-8">
{/* Banner Header */}
<div className="relative overflow-hidden rounded-3xl bg-gradient-to-r from-slate-900 via-slate-800 to-slate-900 border border-slate-800 p-8 shadow-2xl">
<div className="absolute top-0 right-0 -mt-12 -mr-12 w-96 h-96 bg-amber-500/10 rounded-full blur-3xl pointer-events-none" />
<div className="absolute bottom-0 left-1/3 -mb-12 w-80 h-80 bg-teal-500/10 rounded-full blur-3xl pointer-events-none" />
<div className="relative z-10 flex flex-col lg:flex-row items-start lg:items-center justify-between gap-6">
<div>
<div className="inline-flex items-center gap-2 px-3.5 py-1.5 rounded-full bg-amber-500/10 border border-amber-500/20 text-amber-400 text-xs font-semibold uppercase tracking-wider mb-4">
<Flame className="w-4 h-4 text-amber-500 animate-pulse" />
RIT LeetCode Arena
</div>
<h1 className="text-3xl sm:text-5xl font-extrabold tracking-tight text-white font-poppins">
Campus <span className="bg-clip-text text-transparent bg-gradient-to-r from-amber-400 via-orange-400 to-teal-400">LeetCode Leaderboard</span>
</h1>
<p className="mt-2 text-slate-400 max-w-2xl text-sm sm:text-base">
Track top problem solvers across departments. Automatically updated every 24 hours with rate-limited, spaced background sync.
</p>
</div>
<div className="flex flex-wrap items-center gap-3 shrink-0">
<button
onClick={() => setShowModal(true)}
className="flex items-center gap-2 px-5 py-3 rounded-2xl bg-gradient-to-r from-amber-500 to-orange-500 hover:from-amber-600 hover:to-orange-600 text-slate-950 font-bold text-sm shadow-lg shadow-amber-500/25 transition-all transform hover:-translate-y-0.5 active:translate-y-0"
>
<Plus className="w-5 h-5 stroke-[2.5]" />
Register Handle
</button>
<button
onClick={handleTriggerSync}
disabled={isSyncing}
className="flex items-center gap-2 px-4 py-3 rounded-2xl bg-slate-800/80 hover:bg-slate-800 text-slate-300 border border-slate-700/80 font-semibold text-sm transition-all hover:text-white"
>
<RefreshCw className={`w-4 h-4 ${isSyncing ? 'animate-spin text-amber-400' : ''}`} />
24h Spaced Sync
</button>
</div>
</div>
{/* Quick Metrics Bar */}
<div className="grid grid-cols-2 md:grid-cols-4 gap-4 mt-8 pt-6 border-t border-slate-800/80">
<div className="p-4 rounded-2xl bg-slate-950/40 border border-slate-800/60 backdrop-blur-sm">
<span className="text-xs font-semibold text-slate-400 flex items-center gap-1.5">
<Trophy className="w-4 h-4 text-amber-400" /> #1 Top Solver
</span>
<p className="text-lg font-bold text-white mt-1 truncate">
{topProfile ? `${topProfile.studentName}` : 'N/A'}
</p>
<p className="text-xs text-amber-400 font-medium">
{topProfile ? `${topProfile.totalSolved} Problems Solved` : ''}
</p>
</div>
<div className="p-4 rounded-2xl bg-slate-950/40 border border-slate-800/60 backdrop-blur-sm">
<span className="text-xs font-semibold text-slate-400 flex items-center gap-1.5">
<Code2 className="w-4 h-4 text-teal-400" /> Total Campus Solved
</span>
<p className="text-xl font-bold text-white mt-1">
{totalCampusSolved.toLocaleString()}
</p>
<p className="text-xs text-slate-500">Problems across all coders</p>
</div>
<div className="p-4 rounded-2xl bg-slate-950/40 border border-slate-800/60 backdrop-blur-sm">
<span className="text-xs font-semibold text-slate-400 flex items-center gap-1.5">
<User className="w-4 h-4 text-indigo-400" /> Active Coders
</span>
<p className="text-xl font-bold text-white mt-1">
{profiles.length}
</p>
<p className="text-xs text-slate-500">Registered RIT coders</p>
</div>
<div className="p-4 rounded-2xl bg-slate-950/40 border border-slate-800/60 backdrop-blur-sm">
<span className="text-xs font-semibold text-slate-400 flex items-center gap-1.5">
<Clock className="w-4 h-4 text-emerald-400" /> Sync Frequency
</span>
<p className="text-base font-bold text-white mt-1">
Every 24 Hours
</p>
<p className="text-[11px] text-emerald-400/90 font-mono">3s spaced rate-limiting</p>
</div>
</div>
</div>
{/* Search & Filter Controls */}
<div className="flex flex-col sm:flex-row gap-4 items-center justify-between bg-slate-900/60 border border-slate-800/80 p-4 rounded-2xl backdrop-blur-xl">
<div className="relative w-full sm:w-80">
<Search className="w-4 h-4 absolute left-3.5 top-1/2 -translate-y-1/2 text-slate-400" />
<input
type="text"
placeholder="Search by student name or handle..."
value={searchQuery}
onChange={(e) => setSearchQuery(e.target.value)}
className="w-full pl-10 pr-4 py-2.5 rounded-xl bg-slate-950/60 border border-slate-800 text-sm text-white placeholder-slate-500 focus:outline-none focus:border-amber-500/50 transition-colors"
/>
</div>
<div className="flex flex-wrap items-center gap-3 w-full sm:w-auto">
<div className="flex items-center gap-2">
<Filter className="w-4 h-4 text-slate-400" />
<select
value={selectedDept}
onChange={(e) => setSelectedDept(e.target.value)}
className="bg-slate-950/60 border border-slate-800 rounded-xl px-3 py-2 text-xs font-medium text-slate-300 focus:outline-none focus:border-amber-500/50"
>
{DEPARTMENTS.map((d) => (
<option key={d} value={d} className="bg-slate-900">
Dept: {d}
</option>
))}
</select>
</div>
<select
value={selectedYear}
onChange={(e) => setSelectedYear(e.target.value)}
className="bg-slate-950/60 border border-slate-800 rounded-xl px-3 py-2 text-xs font-medium text-slate-300 focus:outline-none focus:border-amber-500/50"
>
{YEARS.map((y) => (
<option key={y} value={y} className="bg-slate-900">
Year: {y}
</option>
))}
</select>
</div>
</div>
{/* Leaderboard Table */}
<div className="overflow-hidden rounded-2xl border border-slate-800 bg-slate-900/40 backdrop-blur-xl shadow-xl">
{loading ? (
<div className="p-16 text-center text-slate-500 flex flex-col items-center gap-3">
<RefreshCw className="w-8 h-8 animate-spin text-amber-500" />
<p className="text-sm font-medium">Fetching LeetCode rankings...</p>
</div>
) : filteredProfiles.length === 0 ? (
<div className="p-16 text-center text-slate-500 space-y-3">
<Trophy className="w-12 h-12 text-slate-700 mx-auto" />
<p className="text-base font-semibold text-slate-300">No coders found</p>
<p className="text-xs text-slate-500">Be the first to register your LeetCode handle!</p>
<button
onClick={() => setShowModal(true)}
className="mt-2 inline-flex items-center gap-2 px-4 py-2 rounded-xl bg-amber-500 text-slate-950 font-bold text-xs"
>
<Plus className="w-4 h-4" /> Register Profile
</button>
</div>
) : (
<>
{/* Mobile Card View (Small Screens) */}
<div className="block md:hidden divide-y divide-slate-800/80">
{filteredProfiles.map((p, index) => {
const rank = index + 1;
const total = p.totalSolved || 1;
const easyPct = Math.round(((p.easySolved || 0) / total) * 100);
const medPct = Math.round(((p.mediumSolved || 0) / total) * 100);
const hardPct = Math.round(((p.hardSolved || 0) / total) * 100);
return (
<motion.div
key={p.id}
initial={{ opacity: 0, y: 10 }}
animate={{ opacity: 1, y: 0 }}
transition={{ delay: index * 0.03 }}
className="p-4 space-y-3 bg-slate-900/60"
>
<div className="flex items-center justify-between gap-3">
<div className="flex items-center gap-3">
{rank === 1 ? (
<span className="text-2xl" title="Rank 1 Gold">🥇</span>
) : rank === 2 ? (
<span className="text-2xl" title="Rank 2 Silver">🥈</span>
) : rank === 3 ? (
<span className="text-2xl" title="Rank 3 Bronze">🥉</span>
) : (
<span className="text-xs font-mono font-extrabold px-2 py-1 rounded bg-slate-800 text-slate-400">
#{rank}
</span>
)}
<div>
<p className="font-bold text-white text-base leading-tight">{p.studentName}</p>
<p className="text-xs text-slate-400 font-mono">@{p.leetcodeUsername}</p>
</div>
</div>
<div className="text-right">
<p className="text-xl font-black text-amber-400 font-mono leading-none">{p.totalSolved}</p>
<p className="text-[10px] text-slate-500 font-medium">Solved</p>
</div>
</div>
<div className="flex items-center justify-between text-xs text-slate-400 pt-1">
<div className="flex items-center gap-2">
<span className="px-2 py-0.5 rounded bg-slate-800 border border-slate-700 text-[11px] font-medium text-slate-300">
{p.department}
</span>
<span className="text-[11px] text-slate-500">{p.year}</span>
</div>
<a
href={`https://leetcode.com/u/${p.leetcodeUsername}`}
target="_blank"
rel="noopener noreferrer"
className="inline-flex items-center gap-1 text-xs text-amber-400 hover:underline font-semibold"
>
LeetCode Profile <ExternalLink className="w-3.5 h-3.5" />
</a>
</div>
{/* Progress Bar */}
<div className="space-y-1 pt-1">
<div className="flex justify-between text-[10px] font-mono text-slate-400">
<span className="text-emerald-400">Easy: {p.easySolved}</span>
<span className="text-amber-400">Med: {p.mediumSolved}</span>
<span className="text-rose-400">Hard: {p.hardSolved}</span>
</div>
<div className="w-full h-2 rounded-full bg-slate-800 overflow-hidden flex">
<div style={{ width: `${easyPct}%` }} className="bg-emerald-500 h-full" />
<div style={{ width: `${medPct}%` }} className="bg-amber-500 h-full" />
<div style={{ width: `${hardPct}%` }} className="bg-rose-500 h-full" />
</div>
</div>
</motion.div>
);
})}
</div>
{/* Desktop Table View (Medium Screens & Up) */}
<div className="hidden md:block overflow-x-auto">
<table className="w-full text-left text-slate-300 border-collapse">
<thead>
<tr className="border-b border-slate-800 bg-slate-950/50 text-[11px] font-bold uppercase tracking-wider text-slate-400">
<th className="py-4 px-6 text-center w-16">Rank</th>
<th className="py-4 px-6">Student</th>
<th className="py-4 px-6">Dept & Year</th>
<th className="py-4 px-6 text-center">Total Solved</th>
<th className="py-4 px-6 min-w-[200px]">Problems Breakdown</th>
<th className="py-4 px-6 text-right">LeetCode Rank</th>
<th className="py-4 px-6 text-center w-24">Profile</th>
</tr>
</thead>
<tbody className="divide-y divide-slate-800/60 text-sm">
{filteredProfiles.map((p, index) => {
const rank = index + 1;
const total = p.totalSolved || 1;
const easyPct = Math.round(((p.easySolved || 0) / total) * 100);
const medPct = Math.round(((p.mediumSolved || 0) / total) * 100);
const hardPct = Math.round(((p.hardSolved || 0) / total) * 100);
return (
<motion.tr
key={p.id}
initial={{ opacity: 0, y: 10 }}
animate={{ opacity: 1, y: 0 }}
transition={{ delay: index * 0.03 }}
className="hover:bg-slate-800/40 transition-colors group"
>
{/* Rank */}
<td className="py-4 px-6 text-center font-extrabold">
{rank === 1 ? (
<div className="w-8 h-8 rounded-full bg-amber-500/20 text-amber-400 border border-amber-500/40 flex items-center justify-center mx-auto text-base shadow-[0_0_12px_rgba(245,158,11,0.3)]">
🥇
</div>
) : rank === 2 ? (
<div className="w-8 h-8 rounded-full bg-slate-300/20 text-slate-200 border border-slate-300/40 flex items-center justify-center mx-auto text-base">
🥈
</div>
) : rank === 3 ? (
<div className="w-8 h-8 rounded-full bg-amber-700/20 text-amber-600 border border-amber-700/40 flex items-center justify-center mx-auto text-base">
🥉
</div>
) : (
<span className="text-slate-500 font-mono">#{rank}</span>
)}
</td>
{/* Student Info */}
<td className="py-4 px-6">
<div>
<p className="font-bold text-white group-hover:text-amber-400 transition-colors">
{p.studentName}
</p>
<p className="text-xs text-slate-400 font-mono">
@{p.leetcodeUsername}
</p>
</div>
</td>
{/* Dept & Year */}
<td className="py-4 px-6 text-xs text-slate-400">
<span className="px-2.5 py-1 rounded-md bg-slate-800 border border-slate-700 text-slate-300 font-medium mr-1.5">
{p.department}
</span>
<span className="text-slate-500">{p.year}</span>
</td>
{/* Total Solved */}
<td className="py-4 px-6 text-center">
<span className="text-lg font-black text-amber-400 font-mono">
{p.totalSolved}
</span>
</td>
{/* Problem Breakdown Bars */}
<td className="py-4 px-6">
<div className="space-y-1.5">
<div className="flex items-center justify-between text-[11px] font-mono text-slate-400">
<span className="text-emerald-400">Easy: {p.easySolved}</span>
<span className="text-amber-400">Med: {p.mediumSolved}</span>
<span className="text-rose-400">Hard: {p.hardSolved}</span>
</div>
<div className="w-full h-2 rounded-full bg-slate-800 overflow-hidden flex">
<div
style={{ width: `${easyPct}%` }}
className="bg-emerald-500 h-full"
title={`Easy: ${p.easySolved}`}
/>
<div
style={{ width: `${medPct}%` }}
className="bg-amber-500 h-full"
title={`Medium: ${p.mediumSolved}`}
/>
<div
style={{ width: `${hardPct}%` }}
className="bg-rose-500 h-full"
title={`Hard: ${p.hardSolved}`}
/>
</div>
</div>
</td>
{/* LeetCode Global Rank */}
<td className="py-4 px-6 text-right font-mono text-xs">
{p.ranking > 0 ? (
<span className="text-slate-300 font-medium">
#{p.ranking.toLocaleString()}
</span>
) : (
<span className="text-slate-600">-</span>
)}
</td>
{/* Profile Link */}
<td className="py-4 px-6 text-center">
<a
href={`https://leetcode.com/u/${p.leetcodeUsername}`}
target="_blank"
rel="noopener noreferrer"
className="inline-flex items-center justify-center w-8 h-8 rounded-lg bg-slate-800 hover:bg-amber-500/20 text-slate-400 hover:text-amber-400 border border-slate-700/60 transition-colors"
title="View on LeetCode"
>
<ExternalLink className="w-4 h-4" />
</a>
</td>
</motion.tr>
);
})}
</tbody>
</table>
</div>
</>
)}
</div>
</div>
{/* Registration Modal */}
<AnimatePresence>
{showModal && (
<div className="fixed inset-0 z-50 flex items-center justify-center p-4 bg-slate-950/80 backdrop-blur-sm">
<motion.div
initial={{ scale: 0.95, opacity: 0 }}
animate={{ scale: 1, opacity: 1 }}
exit={{ scale: 0.95, opacity: 0 }}
className="w-full max-w-md bg-slate-900 border border-slate-800 rounded-3xl p-6 shadow-2xl relative max-h-[90vh] overflow-y-auto"
>
<button
onClick={() => setShowModal(false)}
className="absolute top-5 right-5 text-slate-400 hover:text-white"
>
<X className="w-5 h-5" />
</button>
<div className="flex items-center gap-3 mb-6">
<div className="w-10 h-10 rounded-2xl bg-amber-500/20 border border-amber-500/40 flex items-center justify-center text-amber-400">
<Trophy className="w-5 h-5" />
</div>
<div>
<h3 className="text-lg font-bold text-white">Register LeetCode Handle</h3>
<p className="text-xs text-slate-400">Join the RIT campus coding rankings</p>
</div>
</div>
<form onSubmit={handleRegister} className="space-y-4">
<div>
<label className="block text-xs font-semibold text-slate-300 mb-1.5">
Your Full Name
</label>
<input
type="text"
required
placeholder="e.g. Shanmuga Sundaram"
value={studentName}
onChange={(e) => setStudentName(e.target.value)}
className="w-full px-4 py-2.5 rounded-xl bg-slate-950 border border-slate-800 text-sm text-white focus:outline-none focus:border-amber-500"
/>
</div>
<div>
<label className="block text-xs font-semibold text-slate-300 mb-1.5">
LeetCode Username (Exact)
</label>
<input
type="text"
required
placeholder="e.g. neal_wu"
value={leetcodeUsername}
onChange={(e) => setLeetcodeUsername(e.target.value)}
className="w-full px-4 py-2.5 rounded-xl bg-slate-950 border border-slate-800 text-sm text-white focus:outline-none focus:border-amber-500"
/>
<p className="text-[11px] text-slate-500 mt-1">We will immediately fetch your problem stats from LeetCode.</p>
</div>
<div className="grid grid-cols-2 gap-3">
<div>
<label className="block text-xs font-semibold text-slate-300 mb-1.5">
Department
</label>
<select
value={department}
onChange={(e) => setDepartment(e.target.value)}
className="w-full px-3 py-2.5 rounded-xl bg-slate-950 border border-slate-800 text-sm text-white focus:outline-none focus:border-amber-500"
>
{DEPARTMENTS.filter(d => d !== 'All').map(d => (
<option key={d} value={d}>{d}</option>
))}
</select>
</div>
<div>
<label className="block text-xs font-semibold text-slate-300 mb-1.5">
Year
</label>
<select
value={year}
onChange={(e) => setYear(e.target.value)}
className="w-full px-3 py-2.5 rounded-xl bg-slate-950 border border-slate-800 text-sm text-white focus:outline-none focus:border-amber-500"
>
{YEARS.filter(y => y !== 'All').map(y => (
<option key={y} value={y}>{y}</option>
))}
</select>
</div>
</div>
<div className="pt-2 flex justify-end gap-3">
<button
type="button"
onClick={() => setShowModal(false)}
className="px-4 py-2.5 rounded-xl bg-slate-800 text-slate-300 text-xs font-semibold hover:bg-slate-700"
>
Cancel
</button>
<button
type="submit"
disabled={isSubmitting}
className="px-5 py-2.5 rounded-xl bg-amber-500 hover:bg-amber-600 text-slate-950 text-xs font-bold transition-all"
>
{isSubmitting ? 'Fetching Stats...' : 'Register Profile'}
</button>
</div>
</form>
</motion.div>
</div>
)}
</AnimatePresence>
</div>
);
}