Simple authorization service with XLSX hyperlink conversion functionality.

• User authorization and authentication
• XLSX hyperlink converter for MS Office compatibility
• Google Drive API integration
• File processing and validation

Converts Excel files with HYPERLINK formulas into files with clickable hyperlinks, compatible with both MS Office and LibreOffice.

const xlsxService = require('./src/server/services/xlsxService.js');

// Main method (automatically selects best conversion method)
const result = await xlsxService.doConvertXlsx('path/to/input.xlsx');

// Direct methods
const result1 = xlsxService.convertWithSheetJS('input.xlsx', 'output.xlsx'); // Recommended
const result2 = xlsxService.convertToHyperlinks('input.xlsx', 'output.xlsx'); // Fallback

• xlsx (SheetJS) - main library for maximum MS Office compatibility
• adm-zip - for working with XLSX archives

• Dynamic hyperlink extraction from any files
• MS Office and LibreOffice support
• Preserves all original file data
• Automatic selection of most compatible conversion method

• Node.js >= 18.x
• npm or yarn package manager

1. Clone the repository:

   git clone https://github.com/SvetlanaKrugovykh/AuthorizationService.git
   cd AuthorizationService

2. Install dependencies:

   npm install