scar-chat7/DBMANAGER-SUMMARY.md

DBManager Implementation Summary

Overview

Complete database management CLI tool for SCAR Chat user administration.

Files Created (5 files, ~580 LOC)

1. dbmanager/CMakeLists.txt - Build configuration
2. dbmanager/db_manager.h - DBManager class interface
3. dbmanager/db_manager.cpp - DBManager implementation (~350 LOC)
4. dbmanager/main.cpp - Command-line interface (~180 LOC)
5. dbmanager/README.md - Complete documentation

Files Modified

1. server/database/database.h - Added 6 new methods
2. server/database/database.cpp - Implemented 6 new methods (~200 LOC)
3. CMakeLists.txt - Added dbmanager subdirectory
4. build_and_test.sh - Integrated dbmanager into setup
5. QUICKSTART.md - Replaced manual SQL with dbmanager
6. README.md - Added Database Management section
7. PROGRESS.md - Added dbmanager feature tracking
8. PROGRESS-DBMANAGER.md - Created separate progress tracker

New Database Methods

Added to server/database/database.{h,cpp}:

1. deleteUser(username) - Delete user from database
2. updateUserPassword(username, hash, salt) - Change password with new salt
3. updateUserAvatar(username, avatar_data) - Update avatar blob
4. updateUserEmail(username, email) - Update email field
5. updateUserRole(username, role) - Update role field
6. searchUsers(field, value) - Search with LIKE pattern
7. getAllUsers() - Retrieve all users ordered by username

Commands Implemented

All 9 commands from specification:

1. ✅ adduser <username> <password> [avatar]
2. ✅ deleteuser <username>
3. ✅ modifypass <username> <newpass>
4. ✅ modifyavatar <username> <file>
5. ✅ modifyemail <username> <email>
6. ✅ modifyrole <username> <role>
7. ✅ fetch <username>
8. ✅ search <field> <value>
9. ✅ list

Features

• Password Security: Automatic Argon2 hashing with random salt generation
• Database Location: Auto-detection (local → install → home) with --db override
• Avatar Support: Binary blob storage from image files
• Formatted Output: Table layout for list, detailed display for fetch
• Error Handling: Comprehensive validation and error messages
• Help System: --help flag and usage documentation

Database Location Priority

1. --db <path> command-line option
2. Current working directory (./scarchat.db)
3. Install path (/usr/local/share/scarchat/scarchat.db)
4. User home (~/.local/share/scarchat/scarchat.db)
5. Fallback to ./scarchat.db (creates if missing)

Example Usage

# Create admin
./dbmanager adduser admin secure123
./dbmanager modifyrole admin admin
./dbmanager modifyemail admin admin@localhost

# Create users with avatars
./dbmanager adduser alice pass123 /home/alice/avatar.jpg
./dbmanager adduser bob pass456 /home/bob/avatar.png

# Query operations
./dbmanager list
./dbmanager search role admin
./dbmanager fetch alice

# Modify users
./dbmanager modifypass alice newpassword
./dbmanager modifyemail bob bob@example.com

# Custom database location
./dbmanager --db /custom/path/db.db list

Integration with Build System

• Added to root CMakeLists.txt as subdirectory
• Links against scarchat_shared library (Database, Argon2, JWT)
• Builds with server/client: cmake --build build
• Binary output: build/dbmanager/dbmanager
• Integrated into build_and_test.sh for automated setup

Testing Strategy

The build script now:

1. Builds dbmanager with rest of project
2. Uses dbmanager to create test user testuser:testpass
3. Eliminates manual SQL requirement
4. Verifies database creation and Argon2 hashing

Documentation

Complete documentation in dbmanager/README.md:

• Usage examples for all commands
• Security details (Argon2 parameters)
• Database schema reference
• Troubleshooting guide
• Batch operation examples
• Integration script templates

Status

🟢 COMPLETE - All requirements from dbmanager.md specification implemented

Ready to use for:

• User administration
• Testing setup
• Production user management
• Batch operations
• Integration with external tools

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Total Project Files: 58 files
DBManager Files: 5 files
DBManager LOC: ~580 lines
Database Methods Added: 7 methods, ~200 LOC