EasyPDF Elite

EasyPDF Elite is a C++ based Telegram bot designed for advanced document processing and conversion. It supports multiple formats, including text files, Office documents, images, and reverse conversion from PDF to Word.

Features

• Text to PDF conversion: Converts plain text (.txt) files to PDF format.
• Office to PDF conversion: Supports .docx, .doc, and .rtf files using Microsoft Word COM integration.
• Image to PDF conversion: Converts .jpg, .jpeg, and .png files into PDF documents.
• PDF to Word conversion: Performs reverse conversion from PDF to .docx format.
• Automated Cleanup: All processed files and temporary user directories are deleted immediately after completion.
• Interactive Interface: Uses Telegram inline keyboards for a streamlined user experience.

Prerequisites

• Windows Operating System (Required for Microsoft Word COM integration).
• Microsoft Word installed (For Office and PDF-to-Word conversions).
• CMake 3.12 or higher.
• C++20 compliant compiler (e.g., MSVC, GCC 13+).
• vcpkg or manual installation of dependencies (CPR, nlohmann/json, libharu).

Dependencies

The project automatically fetches or links the following libraries:

• CPR: For HTTP requests to the Telegram Bot API.
• nlohmann/json: For JSON parsing and manipulation.
• libharu: For PDF generation and image embedding.

Installation and Build

1. Clone the repository:

   git clone https://github.com/yourusername/easypdf.git
   cd easypdf

2. Configure the environment: Create a .env file in the root directory based on .env.example:

   TELEGRAM_BOT_TOKEN=your_bot_token_here
   

3. Build the project using CMake:

   cmake -B build -S .
   cmake --build build --config Release

4. Run the application:

   ./build/easypdf/easypdf.exe

Architecture

• easypdf.cpp: Main entry point and Telegram update handling logic.
• easypdf.h: Contains core classes including:
  • TelegramClient: Manages API communication.
  • FileProcessor: Handles conversion logic using libharu and COM interfaces.
  • FileUtils: Provides file naming and formatting utilities.
  • EnvLoader: Manages configuration and secrets.

Usage

1. Start the bot by sending the /start command.
2. Upload a supported file (document or image).
3. Select the desired action from the interactive menu provided by the bot.
4. Download the processed file sent by the bot.

License

This project is licensed under the MIT License. See the LICENSE file for details.