# pandita21-r/library-item-tracker architecture

> Architecture diagram of the GitHub repository pandita21-r/library-item-tracker, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-30). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/pandita21-r/library-item-tracker
- Repository: https://github.com/pandita21-r/library-item-tracker

## Overview

This is a desktop library-item tracker: users sign in, then register, locate, update, or delete items by ID. The Swing dashboard dispatches to separate task windows, which call the shared item manager; that manager maintains item records and persists them in a pipe-delimited inventory file. Authentication is a fixed credential check. The graph reflects the shown Java sources; no README capabilities were provided, and no external services are evident.

Main entry points: [`src/com/library/app/ui/DashboardFrame.java`](https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/ui/DashboardFrame.java) (Dashboard), [`src/com/library/app/services/ItemManager.java`](https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/services/ItemManager.java) (Inventory manager), [`src/com/library/app/ui/RegisterFrame.java`](https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/ui/RegisterFrame.java) (Register item), [`src/com/library/app/ui/LoginFrame.java`](https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/ui/LoginFrame.java) (Login window)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_entry["Startup and login"]
  node_main["Application entry<br/>[Main.java]"]
  node_loginui["Login window<br/>[LoginFrame.java]"]
  node_auth["Credential check<br/>[LoginService.java]"]
end

subgraph group_ui["Desktop workflow"]
  node_dashboard["Dashboard"]
  node_register["Register item<br/>[RegisterFrame.java]"]
  node_locate["Locate item<br/>[LocateFrame.java]"]
  node_delete["Delete item<br/>[DeleteFrame.java]"]
  node_update["Update item<br/>[UpdateFrame.java]"]
  node_icon["Book icon<br/>[BookIcon.java]"]
end

subgraph group_domain["Item management"]
  node_item["Library item<br/>[LibraryItem.java]"]
  node_manager["Inventory manager<br/>[ItemManager.java]"]
end

subgraph group_persistence["Local storage"]
  node_inventory[("Inventory file<br/>[inventory.txt]")]
end

node_user(("Library user"))

node_user -->|"enters credentials"| node_loginui
node_main -->|"opens"| node_loginui
node_loginui -->|"checks credentials"| node_auth
node_loginui -->|"opens on success"| node_dashboard
node_user -->|"chooses task"| node_dashboard
node_dashboard -->|"creates"| node_manager
node_dashboard -->|"opens"| node_register
node_dashboard -->|"opens"| node_locate
node_dashboard -->|"opens"| node_delete
node_dashboard -->|"opens"| node_update
node_dashboard -->|"renders"| node_icon
node_register -->|"registers item"| node_manager
node_register -->|"creates"| node_item
node_locate -->|"finds by ID"| node_manager
node_delete -->|"deletes by ID"| node_manager
node_update -->|"finds and updates"| node_manager
node_manager -->|"loads and manages"| node_item
node_manager -->|"reads and writes"| node_inventory
node_register -->|"renders"| node_icon
node_update -->|"renders"| node_icon

click node_main "https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/Main.java"
click node_loginui "https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/ui/LoginFrame.java"
click node_auth "https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/services/LoginService.java"
click node_dashboard "https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/ui/DashboardFrame.java"
click node_register "https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/ui/RegisterFrame.java"
click node_locate "https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/ui/LocateFrame.java"
click node_delete "https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/ui/DeleteFrame.java"
click node_update "https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/ui/UpdateFrame.java"
click node_icon "https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/ui/BookIcon.java"
click node_item "https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/models/LibraryItem.java"
click node_manager "https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/services/ItemManager.java"
click node_inventory "https://github.com/pandita21-r/library-item-tracker/blob/main/inventory.txt"

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_main,node_loginui,node_auth,node_user toneBlue
class node_dashboard,node_register,node_locate,node_delete,node_update,node_icon toneAmber
class node_item,node_manager toneMint
class node_inventory toneRose
```

## Components

### Startup and login

- [Application entry](https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/Main.java): `src/com/library/app/Main.java`
- [Login window](https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/ui/LoginFrame.java): `src/com/library/app/ui/LoginFrame.java`
- [Credential check](https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/services/LoginService.java): `src/com/library/app/services/LoginService.java`

### Desktop workflow

- [Dashboard](https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/ui/DashboardFrame.java): `src/com/library/app/ui/DashboardFrame.java`
- [Register item](https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/ui/RegisterFrame.java): `src/com/library/app/ui/RegisterFrame.java`
- [Locate item](https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/ui/LocateFrame.java): `src/com/library/app/ui/LocateFrame.java`
- [Delete item](https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/ui/DeleteFrame.java): `src/com/library/app/ui/DeleteFrame.java`
- [Update item](https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/ui/UpdateFrame.java): `src/com/library/app/ui/UpdateFrame.java`
- [Book icon](https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/ui/BookIcon.java): `src/com/library/app/ui/BookIcon.java`

### Item management

- [Library item](https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/models/LibraryItem.java): `src/com/library/app/models/LibraryItem.java`
- [Inventory manager](https://github.com/pandita21-r/library-item-tracker/blob/main/src/com/library/app/services/ItemManager.java): `src/com/library/app/services/ItemManager.java`

### Local storage

- [Inventory file](https://github.com/pandita21-r/library-item-tracker/blob/main/inventory.txt): `inventory.txt`

### Other components

- **Library user**

## Connections

- Library user → Login window: enters credentials (evidence: `src/com/library/app/ui/LoginFrame.java`)
- Application entry → Login window: opens (evidence: `src/com/library/app/Main.java`)
- Login window → Credential check: checks credentials (evidence: `src/com/library/app/ui/LoginFrame.java`)
- Login window → Dashboard: opens on success (evidence: `src/com/library/app/ui/LoginFrame.java`)
- Library user → Dashboard: chooses task (evidence: `src/com/library/app/ui/DashboardFrame.java`)
- Dashboard → Inventory manager: creates (evidence: `src/com/library/app/ui/DashboardFrame.java`)
- Dashboard → Register item: opens (evidence: `src/com/library/app/ui/DashboardFrame.java`)
- Dashboard → Locate item: opens (evidence: `src/com/library/app/ui/DashboardFrame.java`)
- Dashboard → Delete item: opens (evidence: `src/com/library/app/ui/DashboardFrame.java`)
- Dashboard → Update item: opens (evidence: `src/com/library/app/ui/DashboardFrame.java`)
- Dashboard → Book icon: renders (evidence: `src/com/library/app/ui/DashboardFrame.java`)
- Register item → Inventory manager: registers item (evidence: `src/com/library/app/ui/RegisterFrame.java`)
- Register item → Library item: creates (evidence: `src/com/library/app/ui/RegisterFrame.java`)
- Locate item → Inventory manager: finds by ID (evidence: `src/com/library/app/ui/LocateFrame.java`)
- Delete item → Inventory manager: deletes by ID (evidence: `src/com/library/app/ui/DeleteFrame.java`)
- Update item → Inventory manager: finds and updates (evidence: `src/com/library/app/ui/UpdateFrame.java`)
- Inventory manager → Library item: loads and manages (evidence: `src/com/library/app/services/ItemManager.java`)
- Inventory manager → Inventory file: reads and writes (evidence: `src/com/library/app/services/ItemManager.java`)
- Register item → Book icon: renders (evidence: `src/com/library/app/ui/RegisterFrame.java`)
- Update item → Book icon: renders (evidence: `src/com/library/app/ui/UpdateFrame.java`)