# kushagragoel05/food_ordering_backend_system architecture

> Architecture diagram of the GitHub repository kushagragoel05/food_ordering_backend_system, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-26). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/kushagragoel05/food_ordering_backend_system
- Repository: https://github.com/kushagragoel05/food_ordering_backend_system

## Overview

This is a MERN food-ordering application. Users browse and filter food, add configurable items to a shared cart, authenticate, and can view stored orders. The backend exposes food, authentication, location lookup, and order endpoints; MongoDB supplies catalogue data and stores users and orders. The sampled frontend confirms browsing, cart updates, and order-history retrieval, but not the checkout caller or signup/login request wiring. Other major capabilities are represented from the README and route definitions where their frontend wiring was not sampled.

Main entry points: [`Front-end/App.js`](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Front-end/App.js) (Application routes), [`Back-end/Routes/Auth.js`](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/Routes/Auth.js) (Account endpoints), [`Front-end/src/Home.js`](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Front-end/src/Home.js) (Browse and filter), [`Front-end/src/Login.js`](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Front-end/src/Login.js) (Login screen)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_web["Food browsing"]
  node_app["Application routes<br/>[App.js]"]
  node_home["Browse and filter<br/>[Home.js]"]
  node_card["Food item card<br/>[Card.js]"]
end

subgraph group_identity["Account and location"]
  node_login["Login screen<br/>[Login.js]"]
  node_signup["Signup screen<br/>[Signup.js]"]
  node_auth_api["Account endpoints<br/>[Auth.js]"]
  node_token_middleware["JWT verification<br/>[fetchdetails.js]"]
  node_location["Location lookup<br/>[Auth.js]"]
end

subgraph group_orders["Cart and orders"]
  node_cart["Cart state<br/>[ContextReducer.js]"]
  node_checkout["Order submission<br/>[Auth.js]"]
  node_history["Order history screen<br/>[MyOrder.js]"]
  node_order_api["Order history endpoint<br/>[Auth.js]"]
end

subgraph group_server["API and persistence"]
  node_food_api["Food data endpoint<br/>[Auth.js]"]
  node_order_model[("Order records<br/>[Orders.js]")]
  node_user_model[("User records<br/>[User.js]")]
  node_server_entry["Express server<br/>[index.js]"]
  node_catalog_loader["Catalogue loader<br/>[db.js]"]
end

node_customer(("Customer"))
node_geocoder["Geocoding service"]
node_mongo[("MongoDB")]

node_customer -->|"opens"| node_app
node_app -->|"routes to"| node_home
node_app -->|"routes to"| node_login
node_app -->|"routes to"| node_signup
node_app -->|"routes to"| node_history
node_home -->|"requests food"| node_food_api
node_food_api -->|"returns catalogue"| node_home
node_home -->|"renders items"| node_card
node_card -->|"dispatches updates"| node_cart
node_customer -->|"submits credentials"| node_login
node_customer -->|"creates account"| node_signup
node_login -.->|"authenticates"| node_auth_api
node_signup -.->|"registers"| node_auth_api
node_auth_api -->|"reads and writes"| node_user_model
node_auth_api -->|"guards profile"| node_token_middleware
node_customer -->|"requests location"| node_location
node_location -.->|"geocodes coordinates"| node_geocoder
node_customer -.->|"places order"| node_checkout
node_checkout -->|"writes order"| node_order_model
node_history -->|"requests orders"| node_order_api
node_order_api -->|"reads orders"| node_order_model
node_server_entry -->|"mounts routes"| node_auth_api
node_server_entry -->|"loads catalogue"| node_catalog_loader
node_catalog_loader -->|"reads catalogue"| node_mongo
node_user_model -->|"persists users"| node_mongo
node_order_model -->|"persists orders"| node_mongo

click node_app "https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Front-end/App.js"
click node_home "https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Front-end/src/Home.js"
click node_card "https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Front-end/components/Card.js"
click node_food_api "https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/Routes/Auth.js"
click node_cart "https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Front-end/components/ContextReducer.js"
click node_login "https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Front-end/src/Login.js"
click node_signup "https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Front-end/src/Signup.js"
click node_auth_api "https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/Routes/Auth.js"
click node_token_middleware "https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/middleware/fetchdetails.js"
click node_location "https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/Routes/Auth.js"
click node_checkout "https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/Routes/Auth.js"
click node_history "https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Front-end/src/MyOrder.js"
click node_order_api "https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/Routes/Auth.js"
click node_order_model "https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/models/Orders.js"
click node_user_model "https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/models/User.js"
click node_server_entry "https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/index.js"
click node_catalog_loader "https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/db.js"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_app,node_home,node_card toneBlue
class node_login,node_signup,node_auth_api,node_token_middleware,node_location,node_mongo toneAmber
class node_cart,node_checkout,node_history,node_order_api toneMint
class node_food_api,node_order_model,node_user_model,node_server_entry,node_catalog_loader toneRose
class node_customer,node_geocoder toneIndigo
```

## Components

### Food browsing

- [Application routes](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Front-end/App.js): `Front-end/App.js`
- [Browse and filter](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Front-end/src/Home.js): `Front-end/src/Home.js`
- [Food item card](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Front-end/components/Card.js): `Front-end/components/Card.js`

### Account and location

- [Login screen](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Front-end/src/Login.js): `Front-end/src/Login.js`
- [Signup screen](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Front-end/src/Signup.js): `Front-end/src/Signup.js`
- [Account endpoints](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/Routes/Auth.js): `Back-end/Routes/Auth.js`
- [JWT verification](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/middleware/fetchdetails.js): `Back-end/middleware/fetchdetails.js`
- [Location lookup](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/Routes/Auth.js): `Back-end/Routes/Auth.js`

### Cart and orders

- [Cart state](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Front-end/components/ContextReducer.js): `Front-end/components/ContextReducer.js`
- [Order submission](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/Routes/Auth.js): `Back-end/Routes/Auth.js`
- [Order history screen](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Front-end/src/MyOrder.js): `Front-end/src/MyOrder.js`
- [Order history endpoint](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/Routes/Auth.js): `Back-end/Routes/Auth.js`

### API and persistence

- [Food data endpoint](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/Routes/Auth.js): `Back-end/Routes/Auth.js`
- [Order records](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/models/Orders.js): `Back-end/models/Orders.js`
- [User records](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/models/User.js): `Back-end/models/User.js`
- [Express server](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/index.js): `Back-end/index.js`
- [Catalogue loader](https://github.com/kushagragoel05/food_ordering_backend_system/blob/main/Back-end/db.js): `Back-end/db.js`

### Other components

- **Customer**
- **Geocoding service**
- **MongoDB**

## Connections

- Customer → Application routes: opens
- Application routes → Browse and filter: routes to
- Application routes → Login screen: routes to
- Application routes → Signup screen: routes to
- Application routes → Order history screen: routes to
- Browse and filter → Food data endpoint: requests food
- Food data endpoint → Browse and filter: returns catalogue
- Browse and filter → Food item card: renders items
- Food item card → Cart state: dispatches updates
- Customer → Login screen: submits credentials
- Customer → Signup screen: creates account
- Login screen → Account endpoints: authenticates
- Signup screen → Account endpoints: registers
- Account endpoints → User records: reads and writes
- Account endpoints → JWT verification: guards profile
- Customer → Location lookup: requests location
- Location lookup → Geocoding service: geocodes coordinates
- Customer → Order submission: places order
- Order submission → Order records: writes order
- Order history screen → Order history endpoint: requests orders
- Order history endpoint → Order records: reads orders
- Express server → Account endpoints: mounts routes
- Express server → Catalogue loader: loads catalogue
- Catalogue loader → MongoDB: reads catalogue
- User records → MongoDB: persists users
- Order records → MongoDB: persists orders