StealthyScripter/FlexCalling

International calling app using Twilio to make affordable calls from the USA to Kenya. # FlexCalling International calling app using Twilio to make affordable calls from the USA to Kenya. ## 📋 Table of Contents - Features - Tech Stack - Prerequisites - Installation - Configuration - Running the Application - Testing - Project Structure - API Documentation - Contributing - License ## ✨ Features - 📱 Make international calls from USA to Kenya at affordable rates - 👤 User authentication and authorization - 📞 Contact management - 📊 Call history and tracking - 💰 Transparent pricing ($0.05/minute to Kenya) - 🔒 Secure token-based authentication - 📱 Cross-platform mobile app (iOS & Android) using Expo - 🎯 Rate limiting and security middleware - 📝 Comprehensive logging system ## 🛠 Tech Stack ### Backend - **Node.js** with **Express** - REST API - **TypeScript** - Type safety - **Prisma** - Database ORM - **PostgreSQL** - Database - **Twilio** - Voice calling infrastructure - **JWT** - Authentication - **Jest** - Testing framework ### Frontend - **React Native** with **Expo** - Mobile app framework - **Expo Router** - Navigation - **TypeScript** - Type safety - **Async Storage** - Local data persistence - **Expo Secure Store** - Secure credentials storage ## 📦 Prerequisites Before you begin, ensure you have the following installed: - **Node.js** (v18 or higher) - **npm** or **yarn** - **PostgreSQL** (v14 or higher) or **Docker** - **Twilio Account** - Sign up here - **Expo CLI** (optional, but recommended for mobile development) ## 🚀 Installation ### 1. Clone the repository ```bash git clone github.com cd FlexCalling ``` ### 2. Install dependencies ```bash # Install all dependencies (root, server, and client) npm run install:all # Or install individually npm install # Root dependencies cd server && npm install # Server dependencies cd client && npm install # Client dependencies ``` ## ⚙️ Configuration ### Server Configuration 1. Navigate to the server directory: ```bash cd server ``` 2. C …