Add Google Sheets service

[TejaBudumuru3]

Summary by CodeRabbit

• New Features

  • Integrated Google Sheets support with OAuth2 authentication for secure data access
  • Users can now read and retrieve data from specific spreadsheet ranges

• Chores

  • Established package infrastructure and added authentication helper utilities for Google Sheets setup

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[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

This pull request introduces Google Sheets API integration to the packages/nodes project. It adds a GoogleSheetsService class with OAuth2 authentication, utility scripts for token generation and authorization, a test/demo script, and supporting configuration files. The .gitignore is updated to exclude generated token files.

Changes

Cohort / File(s)	Summary
Configuration & Package Setup .gitignore, packages/nodes/package.json	Updated .gitignore to exclude generated token files and Google client credentials. New package.json defines "nodes" package with dependencies on dotenv, google-auth-library, googleapis, and @types/node devDependency.
Google Sheets Service packages/nodes/src/google-sheets/google-sheets.service.ts	Introduces GoogleSheetsService class with OAuth2 authentication initialization from environment variables. Implements readRows() method to fetch spreadsheet values. Exports GoogleSheetsCredentials and ReadRowsParams interfaces for type safety.
OAuth2 Utilities packages/nodes/src/google-sheets/repl.js, packages/nodes/src/google-sheets/token.js	repl.js generates authorization URL for offline Google Sheets access. token.js exchanges authorization code for access/refresh tokens via OAuth2 flow. Both configure client from environment credentials.
Test & Demo packages/nodes/src/google-sheets/test.ts	Demonstration script that loads .env, instantiates GoogleSheetsService with hardcoded credentials, and invokes readRows() to fetch and display spreadsheet data.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant repl.js as repl.js<br/>(Auth URL Gen)
    participant Browser
    participant GoogleAuth as Google OAuth2
    participant token.js as token.js<br/>(Token Exchange)
    
    User->>repl.js: npm run repl
    repl.js->>GoogleAuth: generateAuthUrl(offline, sheets scope)
    GoogleAuth-->>repl.js: auth URL
    repl.js-->>User: Display URL + visit prompt
    User->>Browser: Visit auth URL
    Browser->>GoogleAuth: Authorize access
    GoogleAuth-->>Browser: Return code in redirect
    User->>token.js: npm run token (with code)
    token.js->>GoogleAuth: exchangeCodeForToken(code)
    GoogleAuth-->>token.js: {access_token, refresh_token, expiry_date}
    token.js-->>User: Display tokens

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sequenceDiagram
    participant test.ts as test.ts<br/>(Test Script)
    participant Service as GoogleSheetsService
    participant GoogleAPI as Google Sheets API
    
    test.ts->>test.ts: Load credentials from env/.hardcoded
    test.ts->>Service: new GoogleSheetsService(credentials)
    Service->>Service: Initialize OAuth2 client<br/>with credentials
    Service->>GoogleAPI: Create sheets client
    test.ts->>Service: readRows({spreadsheetId, range})
    Service->>GoogleAPI: sheets.spreadsheets.values.get()
    GoogleAPI-->>Service: {values: [[...],...]}
    Service-->>test.ts: Return row values
    test.ts-->>test.ts: Log results or error

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Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

• OAuth2 credential management: Verify environment variable usage and credential passing across files (repl.js, token.js, google-sheets.service.ts)
• API authentication flow: Ensure OAuth2 client initialization and credential application are correct in the service
• Error handling: Check error handling in readRows() and token exchange operations
• Test credentials: Verify that hardcoded test credentials in test.ts are appropriate and will not expose sensitive data

Poem

🐰 A service so fine, sheets aligned,
OAuth tokens gracefully signed,
Spreadsheets now dance at your command,
Integration across the land!
Hop along to rows anew,
What spreadsheet magic awaits you? 📊

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch google-sheets-node

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 83611ea and 161f2d5.

⛔ Files ignored due to path filters (1)

• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing (6)

• .gitignore (1 hunks)
• packages/nodes/package.json (1 hunks)
• packages/nodes/src/google-sheets/google-sheets.service.ts (1 hunks)
• packages/nodes/src/google-sheets/repl.js (1 hunks)
• packages/nodes/src/google-sheets/test.ts (1 hunks)
• packages/nodes/src/google-sheets/token.js (1 hunks)

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