# chandrasekharthunduru-droid/lingobridge architecture

> Architecture diagram of the GitHub repository chandrasekharthunduru-droid/lingobridge, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-25). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/chandrasekharthunduru-droid/lingobridge
- Repository: https://github.com/chandrasekharthunduru-droid/lingobridge

## Overview

LingoBridge is an authenticated translation workspace. Users sign in or register, enter or import text, choose languages, translate, then edit, save, search, or favorite results; they can also use speech, OCR, document extraction, AI improvement, glossary, analytics, feedback, and sharing features. The graph separates the workspace, input tools, account/data services, and backend integrations. Backend route and database wiring is supported by sampled code; several UI feature connections rely on README descriptions because their implementation was not sampled.

Main entry points: [`src/pages/TranslatorPage.jsx`](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/pages/TranslatorPage.jsx) (Translator workspace), [`backend/server.js`](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/backend/server.js) (Express API), [`src/services/translationService.js`](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/services/translationService.js) (Translation client), [`src/App.jsx`](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/App.jsx) (App routes)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_access["Access"]
  node_app["App routes<br/>[App.jsx]"]
  node_authui["Login and signup<br/>[LoginPage.jsx]"]
  node_authcontext["Auth context<br/>[AuthContext.jsx]"]
end

subgraph group_workspace["Translation workspace"]
  node_translator["Translator workspace<br/>[TranslatorPage.jsx]"]
  node_input["Text input"]
  node_output["Translation output"]
  node_historyui["History and favorites"]
  node_share["QR sharing<br/>[QRShareModal.jsx]"]
end

subgraph group_tools["Input and assistance"]
  node_aiui["AI tools<br/>[AITools.jsx]"]
  node_aiservice["Text improvement<br/>[aiService.js]"]
  node_imageui["Image translator"]
  node_ocr["OCR service<br/>[ocrService.js]"]
  node_documentui["Document translator"]
  node_document["Document extraction<br/>[documentService.js]"]
  node_speechui["Voice controls<br/>[VoiceInput.jsx]"]
  node_speech["Speech service<br/>[speechService.js]"]
end

subgraph group_account["Account and records"]
end

subgraph group_backend["Backend and integrations"]
  node_translation["Translation client"]
  node_server["Express API<br/>[server.js]"]
  node_authmw["JWT middleware<br/>[auth.js]"]
  node_db[("User data store<br/>[db.js]")]
end

node_user(("User"))
node_translatorapi["Google Translate"]
node_fallbacks["Translation fallbacks"]
node_browser["Browser speech APIs"]

node_user -->|"opens"| node_app
node_app -->|"routes"| node_authui
node_authui -->|"authenticates"| node_authcontext
node_authcontext -->|"requests session"| node_server
node_app -->|"protects route"| node_translator
node_user -->|"uses"| node_translator
node_translator -->|"renders"| node_input
node_translator -->|"renders"| node_output
node_translator -->|"translates text"| node_translation
node_translation -->|"posts translation"| node_server
node_server -->|"requests translation"| node_translatorapi
node_server -.->|"falls back"| node_fallbacks
node_translation -.->|"tries fallback"| node_fallbacks
node_translator -->|"manages records"| node_historyui
node_translator -->|"opens sharing"| node_share
node_translator -->|"offers improvement"| node_aiui
node_aiui -->|"improves text"| node_aiservice
node_aiservice -->|"requests improvement"| node_server
node_translator -->|"opens OCR"| node_imageui
node_imageui -->|"extracts image text"| node_ocr
node_translator -->|"opens import"| node_documentui
node_documentui -->|"extracts document text"| node_document
node_translator -->|"offers voice input"| node_speechui
node_speechui -->|"recognizes speech"| node_speech
node_speech -->|"uses"| node_browser
node_server -->|"guards routes"| node_authmw
node_server -->|"reads and writes"| node_db
node_server -->|"translates via API"| node_translatorapi
node_server -->|"applies glossary"| node_db
node_translation -->|"loads history and records"| node_server

click node_app "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/App.jsx"
click node_authui "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/pages/LoginPage.jsx"
click node_authcontext "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/context/AuthContext.jsx"
click node_translator "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/pages/TranslatorPage.jsx"
click node_input "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/components/TranslationInput.jsx"
click node_output "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/components/TranslationOutput.jsx"
click node_historyui "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/components/TranslationHistory.jsx"
click node_share "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/components/QRShareModal.jsx"
click node_translation "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/services/translationService.js"
click node_aiui "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/components/AITools.jsx"
click node_aiservice "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/services/aiService.js"
click node_imageui "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/components/ImageTranslator.jsx"
click node_ocr "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/services/ocrService.js"
click node_documentui "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/components/DocumentTranslator.jsx"
click node_document "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/services/documentService.js"
click node_speechui "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/components/VoiceInput.jsx"
click node_speech "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/services/speechService.js"
click node_server "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/backend/server.js"
click node_authmw "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/backend/middleware/auth.js"
click node_db "https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/backend/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_authui,node_authcontext,node_user,node_browser toneBlue
class node_translator,node_input,node_output,node_historyui,node_share toneAmber
class node_aiui,node_aiservice,node_imageui,node_ocr,node_documentui,node_document,node_speechui,node_speech toneMint
class node_translation,node_server,node_authmw,node_db,node_translatorapi,node_fallbacks toneIndigo
```

## Components

### Access

- [App routes](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/App.jsx): `src/App.jsx`
- [Login and signup](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/pages/LoginPage.jsx): `src/pages/LoginPage.jsx`
- [Auth context](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/context/AuthContext.jsx): `src/context/AuthContext.jsx`

### Translation workspace

- [Translator workspace](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/pages/TranslatorPage.jsx): `src/pages/TranslatorPage.jsx`
- [Text input](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/components/TranslationInput.jsx): `src/components/TranslationInput.jsx`
- [Translation output](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/components/TranslationOutput.jsx): `src/components/TranslationOutput.jsx`
- [History and favorites](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/components/TranslationHistory.jsx): `src/components/TranslationHistory.jsx`
- [QR sharing](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/components/QRShareModal.jsx): `src/components/QRShareModal.jsx`

### Input and assistance

- [AI tools](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/components/AITools.jsx): `src/components/AITools.jsx`
- [Text improvement](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/services/aiService.js): `src/services/aiService.js`
- [Image translator](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/components/ImageTranslator.jsx): `src/components/ImageTranslator.jsx`
- [OCR service](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/services/ocrService.js): `src/services/ocrService.js`
- [Document translator](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/components/DocumentTranslator.jsx): `src/components/DocumentTranslator.jsx`
- [Document extraction](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/services/documentService.js): `src/services/documentService.js`
- [Voice controls](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/components/VoiceInput.jsx): `src/components/VoiceInput.jsx`
- [Speech service](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/services/speechService.js): `src/services/speechService.js`

### Backend and integrations

- [Translation client](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/src/services/translationService.js): `src/services/translationService.js`
- [Express API](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/backend/server.js): `backend/server.js`
- [JWT middleware](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/backend/middleware/auth.js): `backend/middleware/auth.js`
- [User data store](https://github.com/chandrasekharthunduru-droid/lingobridge/blob/main/backend/db.js): `backend/db.js`

### Other components

- **User**
- **Google Translate**
- **Translation fallbacks**
- **Browser speech APIs**

## Connections

- User → App routes: opens
- App routes → Login and signup: routes
- Login and signup → Auth context: authenticates
- Auth context → Express API: requests session
- App routes → Translator workspace: protects route
- User → Translator workspace: uses
- Translator workspace → Text input: renders
- Translator workspace → Translation output: renders
- Translator workspace → Translation client: translates text
- Translation client → Express API: posts translation
- Express API → Google Translate: requests translation
- Express API → Translation fallbacks: falls back
- Translation client → Translation fallbacks: tries fallback
- Translator workspace → History and favorites: manages records
- Translator workspace → QR sharing: opens sharing
- Translator workspace → AI tools: offers improvement
- AI tools → Text improvement: improves text
- Text improvement → Express API: requests improvement
- Translator workspace → Image translator: opens OCR
- Image translator → OCR service: extracts image text
- Translator workspace → Document translator: opens import
- Document translator → Document extraction: extracts document text
- Translator workspace → Voice controls: offers voice input
- Voice controls → Speech service: recognizes speech
- Speech service → Browser speech APIs: uses
- Express API → JWT middleware: guards routes
- Express API → User data store: reads and writes
- Express API → Google Translate: translates via API
- Express API → User data store: applies glossary
- Translation client → Express API: loads history and records