# 🌌 Eventide Calendar

A futuristic, high-performance, and deeply interactive 3D calendar built for the next generation of the web.

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✨ Features

Eventide isn't just a calendar; it's an experience. We've pushed the boundaries of web UI to deliver something that feels alive.

• 🛸 "Warp Speed" Page Transitions: Fluid, 3D flip animations using Framer Motion. The calendar fades backward into space while the list view flies in from the front.
• 🔊 Sci-Fi UI Sound Effects: Deeply satisfying, soft electronic "clicks" and "whooshes" powered by the native Web Audio API (Toggleable for peace and quiet).
• 📅 Optimistic Drag-and-Drop: Instantly reschedule events by dragging them across the grid. The UI updates instantly while syncing seamlessly with the Neon Postgres database in the background.
• 🎨 Premium Aesthetics: Dark mode by default, glassmorphism, dynamic glowing borders, HackerText matrix effects, and Canvas Reveal animations.
• 🔐 Secure Authentication: Integrated NextAuth for secure, session-based user authentication.
• ⚡ Lightning Fast: Powered by Next.js 16 App Router and deployed on Vercel's Edge Network.

🏗️ Architecture & Workflow

Eventide leverages a modern full-stack Serverless architecture for maximum scalability and minimum latency.

graph TD
    %% User Flow
    User((User)) -->|Interacts| Client[Next.js Client Components]
    
    %% Client Tier
    subgraph Frontend [UI & Interactivity]
        Client -->|Framer Motion| Animations[3D Transitions]
        Client -->|Web Audio API| Sounds[Sci-Fi Sounds]
        Client -->|Optimistic UI| State[React State]
    end
    
    %% Network Tier
    Client -->|Server Actions / API| Server[Next.js Server]
    
    %% Backend Tier
    subgraph Backend [Server & Data]
        Server -->|NextAuth| Auth[(Session Data)]
        Server -->|Prisma Client| ORM[Prisma ORM]
    end
    
    %% Database Tier
    ORM -->|Connection Pooling| DB[(Neon Serverless Postgres)]

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🚀 Quick Start

1. Clone the repository

git clone https://github.com/CodeWithBasu/Eventide-Calender.git
cd events-calendar-2026

2. Install dependencies

npm install

3. Set up environment variables

Create a .env file in the root directory and add your database and auth secrets:

# Neon Database Connection
DATABASE_URL="postgresql://user:password@endpoint.neon.tech/neondb?sslmode=require"

# NextAuth Secret
NEXTAUTH_SECRET="your_super_secret_key"
NEXTAUTH_URL="http://localhost:3000"

4. Push the Prisma Schema

npx prisma db push
npx prisma generate

5. Run the Development Server

npm run dev

Navigate to http://localhost:3000 to experience the calendar.

💻 Code Snippets

Optimistic Drag & Drop Updates

To make rescheduling feel instant, Eventide uses optimistic UI rendering. We update the local React state immediately, and gracefully revert if the Server Action fails.

onDrop={async (e) => {
  e.preventDefault();
  const eventId = e.dataTransfer.getData('eventId');
  
  const eventToUpdate = localEvents.find(ev => ev.id === eventId);
  const duration = eventToUpdate.endDay - eventToUpdate.startDay;
  const newEndDay = day.date! + duration;
  
  // 1. Optimistic Update (Instant Feedback)
  setLocalEvents(prev => prev.map(ev => 
    ev.id === eventId ? { ...ev, startDay: day.date!, endDay: newEndDay, month: month } : ev
  ));

  // 2. Background Server Sync
  const res = await updateEventDate(eventId, day.date, month);
  
  if (!res.success) {
    // 3. Revert on failure
    setLocalEvents(prev => prev.map(ev => 
      ev.id === eventId ? { ...ev, startDay: originalDay, endDay: originalEndDay } : ev
    ));
    alert(res.error || "Failed to update event date");
  }
}}

Synthetic Audio Engine

Instead of relying on heavy .mp3 files, Eventide generates high-quality sci-fi sound effects directly in the browser using mathematical oscillators.

export const playHoverSound = () => {
  if (!soundsEnabled) return;
  const audioCtx = getAudioContext();
  if (!audioCtx) return;

  const oscillator = audioCtx.createOscillator();
  const gainNode = audioCtx.createGain();

  oscillator.type = 'sine';
  oscillator.frequency.setValueAtTime(800, audioCtx.currentTime);
  oscillator.frequency.exponentialRampToValueAtTime(1200, audioCtx.currentTime + 0.1);
  
  gainNode.gain.setValueAtTime(0, audioCtx.currentTime);
  gainNode.gain.linearRampToValueAtTime(0.05, audioCtx.currentTime + 0.02);
  gainNode.gain.exponentialRampToValueAtTime(0.001, audioCtx.currentTime + 0.1);

  oscillator.connect(gainNode);
  gainNode.connect(audioCtx.destination);
  
  oscillator.start();
  oscillator.stop(audioCtx.currentTime + 0.1);
};

👨‍💻 About the Author

Basudev (CodeWithBasu)
Passionate full-stack developer obsessed with pushing the limits of web design, beautiful UI/UX, and highly interactive applications.

• GitHub: @CodeWithBasu

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Built with 🖤 for the future of the web.