Enhance repo and code organization #1
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Major refactoring and improvements to transform the project from a single-file script into a professional, well-structured Elixir application: ## Project Structure - Convert to proper Mix project with standard directory layout - Split monolithic code into modular components (6 focused modules) - Add proper project configuration (mix.exs) ## Code Organization - ChatSimulator.User: User data structure with password hashing - ChatSimulator.Message: Message handling with timestamps and read status - ChatSimulator.Auth: Authentication and registration logic - ChatSimulator.Storage: Agent-based persistence with file backup - ChatSimulator.CLI: Enhanced interactive command-line interface - ChatSimulator: Main module with convenience functions ## Documentation - Comprehensive README with installation and usage instructions - CONTRIBUTING.md with development guidelines - Module and function documentation with @doc and @SPEC - Inline examples and usage patterns ## Testing - Complete ExUnit test suite for all modules - Unit tests for User, Message, Auth, and Storage - Test helper configuration - Ready for test coverage analysis ## Code Quality - .formatter.exs for consistent code formatting - .credo.exs for static code analysis - GitHub Actions CI/CD workflow for automated testing - Multi-version Elixir and OTP testing matrix ## Security & Features - SHA256 password hashing (replacing plain text storage) - Username and password validation - Data persistence with automatic saving - New features: list users, conversation history, unread counter - Message read/unread tracking - Improved error handling and user feedback ## Developer Experience - Updated .gitignore with comprehensive rules - CI/CD pipeline with format checking, tests, and build verification - Escript build support for standalone executable - Development documentation and contribution guidelines This reorganization maintains all original functionality while adding professional-grade structure, security, testing, and documentation.
This commit adds extensive improvements to make the repository production-ready with professional development workflows and tooling. ## Configuration & Environment Management - Add environment-specific configurations (dev, test, prod, runtime) - Configurable storage file paths and auto-save settings - Environment-aware logging levels ## Logging & Observability - Integrate Logger throughout the application - Add debug logging for storage operations - Configure log levels per environment - Track user actions and system events ## Developer Experience - Helper scripts (setup.sh, test.sh, clean.sh, docker-build.sh) - Automated setup and testing workflows - Code quality checking script - Build artifact cleanup automation - All scripts are executable and well-documented ## Docker Support - Multi-stage Dockerfile for optimized builds - Docker Compose configuration - Non-root user for security - Volume mounting for data persistence - .dockerignore for efficient builds ## GitHub Templates & Automation - Issue templates (bug report, feature request, documentation) - Pull request template with checklist - Dependabot configuration for dependency updates - Issue template configuration ## Documentation & Governance - CHANGELOG.md following Keep a Changelog format - CODE_OF_CONDUCT.md (Contributor Covenant) - SECURITY.md with vulnerability reporting process - Enhanced README with badges and examples section - Documented all new features and workflows ## Examples & Learning - api_usage.exs - Programmatic API usage example - automated_chat.exs - Multi-user chat simulation - Both examples fully documented and executable ## Testing - Integration test suite (integration_test.exs) - Full workflow testing (registration, login, messaging) - Persistence testing across restarts - Error handling and validation tests - Multi-user scenario testing ## README Enhancements - Add CI, Elixir, OTP, License, and PRs Welcome badges - Document Docker usage - Add quick setup instructions - Reference helper scripts throughout - Expand learning resources section - Update project structure documentation ## Security - Document security policy and reporting process - List known limitations for educational context - Provide security best practices - Outline security enhancement roadmap All enhancements maintain backward compatibility while adding professional-grade tooling and documentation.
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