FoodLoop – Smart & Sustainable Food Delivery System 🌱

JIIT CSE B.Tech 2nd Year – Data Structures Lab (PBL)
Department of Computer Science & Engineering and Information Technology
Jaypee Institute of Information Technology (JIIT), Noida Sector 62
Batch: B2 | Academic Year: 2026–2027
Faculty Mentors & Evaluators: Dr. Sherry Garg & Dr. Lalita Mishra

👥 Team Members & Project Attribution

Name	Enrollment Number	Role / Contributions
Pragya Ahlawat	`2501030121`	UI/UX Design, Food Rescue Marketplace, Group Ordering Rooms
Ronak Jain	`2501030128`	Algorithm Design, Graph Dijkstra, Heap Queues, Automated Test Harness
Rishabh Tyagi	`2501030130`	Backend API Architecture, Doubly Linked List, LIFO Stack, Storage Engine
Shobhit Khatana	`2501030144`	BST Menu Indexing, Segment Tree Decay, Bipartite Matching, Report Documentation

🔑 Presentation & Viva Quick Cheat-Sheet: Demo Credentials & Logins

Important

UNIVERSAL PASSWORD FOR ALL ACCOUNTS: password123
All 4 roles and all team member accounts are pre-loaded in the embedded database. On the Login Page, you can either click the 1-Click Autofill Buttons or log in manually with any email below.

👥 Team Member Dedicated Accounts (JIIT Emails)

Team Member	Enrollment	Role / Portal	Login Email	Password
Ronak Jain	`2501030128`	Platform Admin (`/admin-dashboard`)	`ronak@jiit.ac.in`	`password123`
Pragya Ahlawat	`2501030121`	Customer / Food Rescue (`/`)	`pragya@jiit.ac.in`	`password123`
Rishabh Tyagi	`2501030130`	Restaurant Owner (`/restaurant-dashboard`)	`rishabh@jiit.ac.in`	`password123`
Shobhit Khatana	`2501030144`	Delivery Partner (`/delivery-dashboard`)	`shobhit@jiit.ac.in`	`password123`

🎭 1-Click Role-Based Demo Accounts

Role	Portal / Destination	Email	Password	What You Can Demo
Customer	`/` (Home & Marketplace)	`customer@foodloop.com`	`password123`	Cart Undo/Redo, Food Rescue discount deals, Group order rooms (`LOOP-XXXX`), BST price filter
Restaurant Owner	`/restaurant-dashboard`	`greenbowl@foodloop.com`	`password123`	Live incoming kitchen FIFO queue, publishing surplus meals with Arrhenius decay pricing
Delivery Partner	`/delivery-dashboard`	`delivery@foodloop.com`	`password123`	Min-Heap priority queue assignment, live Dijkstra turn-by-turn routing with EV scooter
Platform Administrator	`/admin-dashboard`	`admin@foodloop.com`	`password123`	SDG 12 & SDG 9 analytics, orphanages & shelter emergency surplus dispatch via DSU & Bipartite Matching

👉 Full 3-Minute Presentation Walkthrough & Model Viva Answers: See docs/PRESENTATION_CHEATSHEET.md

🎯 United Nations Sustainable Development Goals (SDG) Alignment

Primary Goal — SDG 12: Responsible Consumption and Production:
- Prevents safe, prepared commercial food from ending up in municipal landfills via real-time Food Rescue discounting.
- Defaults to single-use plastic cutlery opt-out and 100% compostable sugarcane bagasse packaging with gamified Eco-Reward points.
Secondary Goal — SDG 9: Industry, Innovation, and Infrastructure:
- Collaborative group ordering rooms (LOOP-XXXX) consolidate multiple consumer orders into single low-carbon courier runs.
- Multi-Modal Drone-to-EV delivery routing calculates lowest-emission transit corridors.
Humanitarian Impact — SDG 2: Zero Hunger:
- Automated emergency surplus dispatch routes unsold restaurant meals to orphanages and night shelters before expiration.

🌟 Executive Summary: What is FoodLoop?

FoodLoop is a modern full-stack food delivery application that merges the smooth ordering experience of platforms like Zomato and Swiggy with environmental responsibility and rigorous Computer Science Data Structures & Algorithms.

Unlike standard delivery systems that discard surplus meals and send individual gas-powered motorbikes for every small order, FoodLoop integrates:

A Food Rescue Marketplace where commercial kitchens list surplus meals at 50%–65% OFF.
An Interactive DSA Lab Visualizer (/dsa-lab) demonstrating 11 classical data structures and algorithmic models directly inside the web browser.
A Collaborative Group Order Hub with dynamic bill splitting (by items or equal split).
4 Role-Based Portals (Customer, Restaurant Owner, Delivery Partner, Administrator) with 1-click demo logins.

🌐 Live Cloud Deployment & Public Access

FoodLoop is configured for multi-cloud deployment with 1-click automated builds:

⚡ 1. Live Instant Public URL

Main Application: https://594fc5b781cbca41-103-225-190-132.serveousercontent.com
Interactive DSA Visualizer: https://594fc5b781cbca41-103-225-190-132.serveousercontent.com/dsa-lab
API Health Check: https://594fc5b781cbca41-103-225-190-132.serveousercontent.com/api/health

🚀 2. 1-Click Free Cloud Deployment

Option A: Deploy to Render (Recommended for Full-Stack Node.js)

FoodLoop includes a pre-configured render.yaml blueprint. Click below to deploy a permanent free cloud instance:

Manual Render Setup (60 Seconds):

Go to Render Dashboard and click New → Web Service.
Connect your GitHub repository: https://github.com/Ronak1167/FoodLoop.
Configure settings:
- Environment: Node
- Build Command: npm run render-build
- Start Command: npm start
- Plan: Free
Click Deploy Web Service. Render will build the React frontend, start Express, and assign a permanent URL (e.g. https://foodloop.onrender.com).

Option B: Deploy with Docker

# Build the multi-stage production container
docker build -t foodloop .

# Run container on port 5000
docker run -d -p 5000:5000 --name foodloop-app foodloop

Option C: Deploy to Railway / Koyeb

Connect https://github.com/Ronak1167/FoodLoop to Railway or Koyeb.
Railway automatically detects the root Dockerfile and deploys the full-stack container with SSL.

🛠️ System Requirements & Prerequisites

Hardware Requirements

Processor: Dual-Core 2.0 GHz or higher (Intel Core i3/i5/i7, AMD Ryzen, or Apple Silicon M-series).
RAM: Minimum 4 GB (8 GB recommended).
Disk Space: 500 MB free storage.

Software Prerequisites

Operating System: Windows 10/11, macOS, or Linux.
Node.js: v18.0.0 or higher (v20+ recommended).
npm: v9.0.0 or higher.
Web Browser: Any modern browser (Google Chrome, Mozilla Firefox, Microsoft Edge, Safari).

🚀 Step-by-Step Installation & Running Guide

Quick Start: 1-Command Full-Stack Server (Recommended)

FoodLoop includes an embedded resilient JSON storage engine in server/data/, meaning no MongoDB service or external database setup is required to run out of the box.

# 1. Clone the repository
git clone https://github.com/Ronak1167/FoodLoop.git
cd FoodLoop

# 2. Run the automated Data Structures Lab test suite (14/14 tests)
npm test

# 3. Start the unified application on port 5000
npm start

Once started, open your web browser and navigate to: 👉 http://localhost:5000

To jump straight into the Data Structures Lab Visualizer: 👉 http://localhost:5000/dsa-lab

Development Mode (Independent Frontend & Backend)

If you wish to edit source code with live hot-reloading:

# Terminal 1 — Backend REST API (Port 5000):
cd server
npm start

# Terminal 2 — Frontend Vite Dev Server (Port 5173 with HMR):
cd client
npm run dev

Open http://localhost:5173 for hot-reloading development.

🧪 Automated Test Suite (14/14 Tests Passing)

FoodLoop includes a standalone automated test harness in server/test/dsa.test.js validating every data structure and algorithm:

npm test

Verified Test Suite Output

======================================================
   FOODLOOP DATA STRUCTURES & OOP LAB TEST HARNESS   
======================================================

--- 1. Road Network Graph (Adjacency List) ---
  ✓ PASS: Graph contains 16 sector nodes and bidirectional edges

--- 2. Dijkstra Shortest Path Algorithm ---
  ✓ PASS: Calculates valid shortest path between N1 and N7

--- 3. Min-Priority Queue (Binary Min-Heap) ---
  ✓ PASS: Maintains Min-Heap invariant across multiple inserts and extractions

--- 4. FIFO Queue & Urgency Queue ---
  ✓ PASS: FIFO queue enqueues and dequeues in exact chronological order

--- 5. Merge Sort (Divide & Conquer) ---
  ✓ PASS: Sorts restaurants by rating descending in O(N log N) time

--- 6. Binary Search vs Linear Search ---
  ✓ PASS: Binary search finds item in O(log N) while linear search takes O(N)

--- 7. Doubly Linked List (Order Status Lifecycle) ---
  ✓ PASS: Advances and reverts order stages via next and prev pointers in O(1)

--- 8. LIFO Stack (Cart Undo / Redo Engine) ---
  ✓ PASS: Stack records actions and performs rollback (Undo) and recovery (Redo) in O(1)

--- 9. Binary Search Tree (Menu Price Indexer) ---
  ✓ PASS: BST inserts nodes, performs in-order traversal and executes range query

--- 10. Object-Oriented Domain Hierarchy & Polymorphism ---
  ✓ PASS: Validates encapsulation, class inheritance and dynamic polymorphic method overrides

--- 11. Microbial Freshness Decay & Segment Tree ---
  ✓ PASS: Calculates Arrhenius microbial decay and executes Segment Tree range query in O(log N)

--- 12. Zero-Hunger Emergency Dispatch (DSU & Bipartite Matching) ---
  ✓ PASS: DSU clusters nodes and Bipartite Matching pairs kitchens to shelters

--- 13. Multi-Modal Drone-EV Relay Route Optimizer ---
  ✓ PASS: Computes multi-modal drone-locker-EV route and verifies carbon avoidance

--- 14. Eco-Nutrient Multi-Dimensional DP Knapsack ---
  ✓ PASS: Solves 0/1 knapsack maximizing protein within financial budget and carbon cap

======================================================
TEST SUMMARY: 14 PASSED, 0 FAILED (100% SUCCESS RATE)
======================================================

👥 4 Role Dashboards & 1-Click Demo Logins

The application features instant 1-click role switcher buttons in the top navbar and login page:

Role	Demo Email	Password	Key Features & Capabilities
Customer	`customer@foodloop.com`	`password123`	Browse menus, buy surplus deals, cart with undo/redo stack, live order tracking, group ordering rooms, sustainability points.
Restaurant Owner	`greenbowl@foodloop.com`	`password123`	Manage menu items, publish Food Rescue deals with countdown deadlines, update order preparation statuses, view revenue metrics.
Delivery Partner	`delivery@foodloop.com`	`password123`	View assigned orders, road graph navigation, GPS waypoint simulation, step orders through lifecycle (Ready ➔ Delivered).
Administrator	`admin@foodloop.com`	`password123`	Platform GMV analytics, food rescue impact counter, approve/suspend restaurants, audit all transactions, category oversight.

⚡ Interactive DSA Lab Visualizer (`/dsa-lab`)

Located at http://localhost:5000/dsa-lab, this visualizer provides 11 interactive laboratory tabs specifically designed for university lab evaluation and viva examinations:

#	Data Structure / Algorithm	Real-World FoodLoop Application	Time Complexity	Space Complexity
1	Graph (Adjacency List)	16-node city road network model with weighted bidirectional edges	$O(V + E)$	$O(V + E)$
2	Dijkstra's Algorithm	Shortest path routing for EV couriers with priority queue relaxation	$O((V + E) \log V)$	$O(V + E)$
3	Doubly Linked List	6-stage live order tracking with $O(1)$ forward and backward rollback	$O(1)$ advance/revert	$O(N)$
4	LIFO Stack (Twin Stack)	Cart action Undo/Redo engine preventing accidental order losses	$O(1)$ push/pop	$O(N)$
5	Binary Search Tree (BST)	Menu price indexing with sub-linear range queries $[min, max]$	$O(K + H)$ query	$O(N)$
6	Binary Min-Heap	Urgency queue prioritizing surplus deals expiring soonest at root	$O(\log N)$ insert/extract	$O(N)$
7	Merge Sort	Stable divide-and-conquer restaurant catalog sorting by rating/time	$O(N \log N)$ all cases	$O(N)$
8	Binary vs. Linear Search	Logarithmic search over sorted names vs. linear sequential search	$O(\log N)$ vs $O(N)$	$O(1)$
9	OOP Architecture	Demonstrates private `#` encapsulation, inheritance, and polymorphism	N/A	N/A
10	Segment Tree & Arrhenius Kinetics	Microbial spoilage decay modeling with dynamic asymptotic pricing	$O(\log N)$ range query	$O(4N)$
11	DSU & Bipartite Matching	Zero-Hunger emergency dispatch pairing surplus kitchens to shelters	$O(\alpha(N))$ & $O(V \cdot E)$	$O(V + E)$
12	Multi-Modal Relay DAG	Drone-to-EV courier handshake routing via smart solar lockers	$O((V + E) \log V)$	$O(V + E)$
13	DP 0/1 Knapsack	Multi-constraint meal synthesizer optimizing protein within budget & carbon	$O(N \cdot \text{Budget})$	$O(N \cdot \text{Budget})$

🔬 4 Groundbreaking Real-World Innovations (What's New?)

These 4 innovations were engineered to address real-world problems unsolved by commercial food apps:

Innovation 1: Thermodynamic Microbial Freshness Decay & Dynamic Asymptotic Pricing

Problem: Current apps treat food freshness as binary ("safe" vs "expired"). Edible food is dumped simply because a clock hits an arbitrary time.
Solution: Implements Arrhenius bacterial growth kinetics ($k = A \cdot e^{-E_a/RT}$) estimating Colony Forming Units ($CFU/g$). FoodLoop uses an exponential asymptotic markdown curve: $$P(t) = P_{\text{floor}} + (P_{\text{base}} - P_{\text{floor}}) \cdot e^{-\lambda t}$$ ensuring meals are sold at decreasing prices before reaching critical thresholds.
Data Structure: Segment Tree built over active batches for $O(\log N)$ range queries.

Innovation 2: Zero-Hunger Emergency Dispatch (SDG 2)

Problem: When surplus food enters the final 45 minutes before closing, commercial demand drops to zero, and kitchens dump food while nearby night shelters starve.
Solution: Automatically transitions unsold surplus to Zero-Cost Emergency Humanitarian Dispatch.
Data Structure & Algorithm: Disjoint Set Union (DSU with Path Compression & Union by Rank) clusters local volunteer pods in near-constant $O(\alpha(N))$ time, and Maximum-Weight Bipartite Graph Matching matches portions to shelter headcounts and dietary restrictions (e.g. pure veg).

Innovation 3: Multi-Modal Drone-to-EV Courier Handshake Relay

Problem: Gas-powered delivery motorbikes generate 142g $CO_2$/km and get stuck in arterial traffic.
Solution: Splits trips $> 5\text{ km}$ into an express autonomous drone air corridor ($48\text{ km/h}$, 0 street traffic), a smart solar locker automated carousel handshake, and last-mile EV scooter doorstep delivery.
Data Structure: Multi-layer Directed Acyclic Graph (DAG) with synchronized transfer windows ($|T_{\text{drone}} - T_{\text{courier}}| \le 2\text{ mins}$).

Innovation 4: Eco-Nutrient Pareto Frontier Meal Synthesizer

Problem: Consumers have competing goals: staying within a financial budget, meeting protein targets, and minimizing environmental carbon footprints.
Solution: Formulates meal selection as a Multi-Dimensional 0/1 Knapsack Problem solved via Dynamic Programming (DP) with memoization ($O(N \cdot B)$), constructing the optimal meal set on the Pareto frontier.

📁 Project Directory Structure

FoodLoop/
├── client/                          # React 18 Frontend
│   ├── dist/                        # Pre-built production bundle
│   ├── src/
│   │   ├── components/              # Navbar, Footer, FoodCard, CartDrawer, SDGBadge
│   │   ├── context/                 # AuthContext (RBAC), CartContext (State)
│   │   ├── pages/
│   │   │   ├── Home.jsx             # Hero, Highlights, Quick Demo
│   │   │   ├── Restaurants.jsx      # Catalog, Multi-criteria Sorting
│   │   │   ├── FoodRescue.jsx       # Surplus Deals, Dynamic Markdown Timers
│   │   │   ├── GroupOrder.jsx       # Collaborative Room Codes (LOOP-XXXX)
│   │   │   ├── DsaLabVisualizer.jsx # 11-Tab Interactive DSA Visualizer
│   │   │   ├── OrderTracking.jsx    # Live Order Lifecycle Tracker
│   │   │   ├── SustainabilityDashboard.jsx # Eco-Points, CO2 Metrics
│   │   │   └── ... (Role Dashboards for Restaurant, Courier, Admin)
│   │   └── services/api.js          # REST Client for all 25 Endpoints
│   ├── package.json
│   └── vite.config.js
│
├── server/                          # Node.js + Express Backend
│   ├── data/                        # Persistent JSON Document Database
│   │   ├── users.json
│   │   ├── restaurants.json
│   │   ├── menuItems.json
│   │   └── orders.json
│   ├── src/
│   │   ├── algorithms/              # Custom Data Structures & Algorithms
│   │   │   ├── roadGraph.js         # Weighted Graph (Adjacency List - 16 Nodes)
│   │   │   ├── dijkstra.js          # Dijkstra Shortest Path with Min-Heap
│   │   │   ├── doublyLinkedList.js  # Order Lifecycle Doubly Linked List
│   │   │   ├── stack.js             # Cart Undo/Redo Twin Stack
│   │   │   ├── binarySearchTree.js  # Menu Price BST Indexer & Range Query
│   │   │   ├── priorityQueue.js     # Binary Min-Heap Priority Queue
│   │   │   ├── orderQueue.js        # FIFO Kitchen Preparation Queue
│   │   │   ├── sortingSearching.js  # Merge Sort & Binary Search
│   │   │   ├── recommendationHash.js# Hash Map Frequency Recommender
│   │   │   ├── freshnessKinetics.js # Arrhenius Decay & Segment Tree
│   │   │   ├── zeroHungerDispatch.js# DSU & Bipartite Graph Matching
│   │   │   ├── multimodalRelay.js   # Multi-Modal Drone-EV Relay DAG
│   │   │   ├── ecoKnapsack.js       # Dynamic Programming 0/1 Knapsack
│   │   │   └── oopModels.js         # Formal OOP Domain Hierarchy
│   │   ├── routes/                  # Express REST Routes
│   │   │   ├── dsaRoutes.js         # All DSA Evaluation API Endpoints
│   │   │   └── ... (auth, restaurants, orders, rescue, delivery, admin)
│   │   └── server.js                # Server Entrypoint & Unified Static Host
│   ├── test/
│   │   └── dsa.test.js              # 14-Module Automated Test Harness
│   └── package.json
│
├── docs/                            # Academic Submission Documents
│   ├── PRESENTATION_CHEATSHEET.md   # Presentation Guide & All Saved Passwords
│   ├── PROJECT_REPORT.md            # Official 8-Section Final Report
│   ├── VIDEO_DEMO_SCRIPT.md         # 2–3 Minute Video Submission Script
│   └── VIVA_PREPARATION_GUIDE.md    # Top 20 Viva Questions & Formula Reference
│
├── .gitignore                       # Clean Repository Ignore Rules
├── package.json                     # Root Orchestration Scripts
└── README.md                        # Master Documentation

📑 Academic Deliverables Included

All documentation required by the JIIT Data Structures Lab (PBL) Submission Guidelines has been prepared and formatted:

Official 8-Section Project Report (docs/PROJECT_REPORT.md):
- Title Page with student names and enrollment numbers.
- Table of Contents, Problem Statement, Scope.
- UML Class Diagram (Mermaid & ASCII).
- Comprehensive Time/Space Complexity Table for all 14 algorithms.
- Numbered and captioned figures (Figures 5.1 through 5.11).
- Formal Academic References (Cormen et al., UN SDG, FSSAI).
Video Submission Walkthrough Script (docs/VIDEO_DEMO_SCRIPT.md):
- Time-coded 2.5-minute speaking script for recording your team demo video.
Viva Examination Cheat-Sheet (docs/VIVA_PREPARATION_GUIDE.md):
- Top 20 viva questions with model answers and quick-reference formula sheet.
Presentation Cheatsheet & Master Logins (docs/PRESENTATION_CHEATSHEET.md):
- All saved passwords, role credentials, 3-minute presentation script, and speaker breakdown.

📜 License

This project is submitted for academic evaluation under the B.Tech CSE Curriculum at Jaypee Institute of Information Technology (JIIT), Noida-62.
Distributed under the ISC License. © 2026 FoodLoop Team.

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FoodLoop – Smart & Sustainable Food Delivery System 🌱

👥 Team Members & Project Attribution

🔑 Presentation & Viva Quick Cheat-Sheet: Demo Credentials & Logins

👥 Team Member Dedicated Accounts (JIIT Emails)

🎭 1-Click Role-Based Demo Accounts

🎯 United Nations Sustainable Development Goals (SDG) Alignment

🌟 Executive Summary: What is FoodLoop?

🌐 Live Cloud Deployment & Public Access

⚡ 1. Live Instant Public URL

🚀 2. 1-Click Free Cloud Deployment

Option A: Deploy to Render (Recommended for Full-Stack Node.js)

Option B: Deploy with Docker

Option C: Deploy to Railway / Koyeb

🛠️ System Requirements & Prerequisites

Hardware Requirements

Software Prerequisites

🚀 Step-by-Step Installation & Running Guide

Quick Start: 1-Command Full-Stack Server (Recommended)

Development Mode (Independent Frontend & Backend)

🧪 Automated Test Suite (14/14 Tests Passing)

Verified Test Suite Output

👥 4 Role Dashboards & 1-Click Demo Logins

⚡ Interactive DSA Lab Visualizer (`/dsa-lab`)

🔬 4 Groundbreaking Real-World Innovations (What's New?)

Innovation 1: Thermodynamic Microbial Freshness Decay & Dynamic Asymptotic Pricing

Innovation 2: Zero-Hunger Emergency Dispatch (SDG 2)

Innovation 3: Multi-Modal Drone-to-EV Courier Handshake Relay

Innovation 4: Eco-Nutrient Pareto Frontier Meal Synthesizer

📁 Project Directory Structure

📑 Academic Deliverables Included

📜 License

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Name		Name	Last commit message	Last commit date
.github/workflows		.github/workflows
client		client
docs		docs
server		server
.dockerignore		.dockerignore
.gitignore		.gitignore
Dockerfile		Dockerfile
README.md		README.md
package.json		package.json
render.yaml		render.yaml
vercel.json		vercel.json

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FoodLoop – Smart & Sustainable Food Delivery System 🌱

👥 Team Members & Project Attribution

🔑 Presentation & Viva Quick Cheat-Sheet: Demo Credentials & Logins

👥 Team Member Dedicated Accounts (JIIT Emails)

🎭 1-Click Role-Based Demo Accounts

🎯 United Nations Sustainable Development Goals (SDG) Alignment

🌟 Executive Summary: What is FoodLoop?

🌐 Live Cloud Deployment & Public Access

⚡ 1. Live Instant Public URL

🚀 2. 1-Click Free Cloud Deployment

Option A: Deploy to Render (Recommended for Full-Stack Node.js)

Option B: Deploy with Docker

Option C: Deploy to Railway / Koyeb

🛠️ System Requirements & Prerequisites

Hardware Requirements

Software Prerequisites

🚀 Step-by-Step Installation & Running Guide

Quick Start: 1-Command Full-Stack Server (Recommended)

Development Mode (Independent Frontend & Backend)

🧪 Automated Test Suite (14/14 Tests Passing)

Verified Test Suite Output

👥 4 Role Dashboards & 1-Click Demo Logins

⚡ Interactive DSA Lab Visualizer (/dsa-lab)

🔬 4 Groundbreaking Real-World Innovations (What's New?)

Innovation 1: Thermodynamic Microbial Freshness Decay & Dynamic Asymptotic Pricing

Innovation 2: Zero-Hunger Emergency Dispatch (SDG 2)

Innovation 3: Multi-Modal Drone-to-EV Courier Handshake Relay

Innovation 4: Eco-Nutrient Pareto Frontier Meal Synthesizer

📁 Project Directory Structure

📑 Academic Deliverables Included

📜 License

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⚡ Interactive DSA Lab Visualizer (`/dsa-lab`)