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prezenta_work/oldcode/INDEX.md

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# Prezenta Work - Modular Architecture Index
## 📋 File Directory
### 🎯 Application Entry Points
| File | Size | Purpose |
|------|------|---------|
| **app.py** | - | Original monolithic app (preserved) |
| **app_modular.py** | 8.6K | **NEW: Modular main entry point** ⭐ |
### ⚙️ Core Modules (11 files)
#### Configuration & Device
| File | Size | Purpose |
|------|------|---------|
| **config_settings.py** | 5.8K | Centralized configuration management |
| **device_module.py** | 3.1K | Device hostname & IP management |
#### System & Dependencies
| File | Size | Purpose |
|------|------|---------|
| **system_init_module.py** | 8.9K | System initialization & hardware checks |
| **dependencies_module.py** | 4.7K | Package installation & verification |
#### Logging & Monitoring
| File | Size | Purpose |
|------|------|---------|
| **logger_module.py** | 3.0K | Logging & remote notifications |
| **connectivity_module.py** | 3.4K | Network monitoring & backup data |
#### Execution & Updates
| File | Size | Purpose |
|------|------|---------|
| **commands_module.py** | 2.4K | Secure command execution |
| **autoupdate_module.py** | 6.6K | Remote application updates |
#### API & Hardware
| File | Size | Purpose |
|------|------|---------|
| **api_routes_module.py** | 3.7K | Flask API routes & endpoints |
| **rfid_module.py** | 1.7K | RFID reader initialization |
### 📚 Documentation (4 files)
| File | Size | Purpose |
|------|------|---------|
| **MODULAR_REFACTORING_SUMMARY.md** | 11K | 📍 START HERE - Complete overview |
| **MODULAR_ARCHITECTURE.md** | 13K | Detailed architecture & modules |
| **QUICKSTART.md** | 6.8K | Quick start & API reference |
| **REFACTORING_COMPLETE.md** | 6.1K | Refactoring summary & benefits |
### 📊 Analysis & Reference
| File | Purpose |
|------|---------|
| **../PREZENTA_WORK_ANALYSIS.md** | Client functionality analysis |
| **./data/idmasa.txt** | Device table/room name |
| **./data/device_info.txt** | Cached device info |
| **./data/log.txt** | Application logs |
---
## 🚀 Getting Started
### 1. Read the Overview
👉 **Start here:** [MODULAR_REFACTORING_SUMMARY.md](MODULAR_REFACTORING_SUMMARY.md)
### 2. Quick Start
👉 **Run immediately:** [QUICKSTART.md](QUICKSTART.md)
### 3. Detailed Architecture
👉 **Deep dive:** [MODULAR_ARCHITECTURE.md](MODULAR_ARCHITECTURE.md)
### 4. Run the App
```bash
python3 app_modular.py
```
---
## 📂 Module Overview
### Central Hub: config_settings.py
This is your **configuration hub**. All settings are here:
- Server addresses
- File paths
- Flask configuration
- Hardware settings
- Allowed commands
**Want to change server?** Edit here or use environment variables.
### Application Flow
```
1. app_modular.py (Start here)
├── Import config_settings.py
├── Check dependencies_module.py
├── Run system_init_module.py
├── Get device_module.py info
├── Setup logger_module.py
├── Start connectivity_module.py (background)
├── Initialize rfid_module.py
├── Register api_routes_module.py
└── Start Flask server
├── GET /status
├── POST /execute_command
└── POST /auto_update
```
---
## 🔧 Configuration Quick Reference
### Change Server Address (3 Methods)
**Method 1: Environment Variables**
```bash
export MONITORING_SERVER_HOST=192.168.1.100
python3 app_modular.py
```
**Method 2: .env File**
```bash
echo "MONITORING_SERVER_HOST=192.168.1.100" > .env
python3 app_modular.py
```
**Method 3: Edit config_settings.py**
```python
MONITORING_SERVER_HOST = '192.168.1.100'
```
### Other Common Settings
```python
# Server configuration
MONITORING_SERVER_URL = "http://rpi-ansible:80/logs"
AUTO_UPDATE_SERVER_HOST = "rpi-ansible"
CONNECTIVITY_CHECK_HOST = "10.76.140.17"
# Flask configuration
FLASK_PORT = 80
# Timeouts
REQUEST_TIMEOUT = 5 # seconds
# Hardware
SERIAL_DEVICES = ['/dev/ttyS0', '/dev/ttyAMA0', '/dev/ttyUSB0']
```
---
## 🌐 API Endpoints
All endpoints provide JSON responses.
### GET /status
Get device status information.
**Response:**
```json
{
"hostname": "rpi-prezenta-1",
"device_ip": "192.168.1.50",
"nume_masa": "TABLE_05",
"timestamp": "2025-12-18 14:30:45",
"uptime": "...",
"disk_usage": "...",
"memory_usage": "..."
}
```
### POST /execute_command
Execute allow-listed system commands.
**Request:**
```json
{"command": "uptime"}
```
**Response:**
```json
{
"status": "success",
"message": "Command executed successfully",
"output": "..."
}
```
### POST /auto_update
Check and apply updates.
**Response:**
```json
{
"status": "no_update_needed",
"current_version": 2.7,
"remote_version": 2.7
}
```
---
## 📊 Module Sizes
```
api_routes_module.py 3.7K ▌ API routes & endpoints
app_modular.py 8.6K ███ Main application
autoupdate_module.py 6.6K ██ Auto-update functionality
commands_module.py 2.4K ▌ Command execution
config_settings.py 5.8K ██ Configuration management
connectivity_module.py 3.4K ▌ Network monitoring
dependencies_module.py 4.7K ▌ Package management
device_module.py 3.1K ▌ Device information
logger_module.py 3.0K ▌ Logging system
rfid_module.py 1.7K ▌ RFID reader
system_init_module.py 8.9K ███ System initialization
Total: ~55K (organized vs monolithic)
```
---
## ✅ Verification Checklist
Test these to verify everything works:
- [ ] App starts: `python3 app_modular.py`
- [ ] Status endpoint: `curl http://localhost/status`
- [ ] Command endpoint: `curl -X POST http://localhost/execute_command -H "Content-Type: application/json" -d '{"command": "uptime"}'`
- [ ] Logs created: `cat ./data/log.txt`
- [ ] Config via env: `MONITORING_SERVER_HOST=test python3 app_modular.py`
- [ ] RFID initialized: Check startup output
- [ ] Connectivity monitor: Running in background
---
## 🔍 Troubleshooting
### Issue: Import Error
**Solution:** Ensure all modules are in same directory
```bash
cd /srv/prezenta_work
python3 app_modular.py
```
### Issue: Port 80 Permission Denied
**Solution:** Set capabilities or use sudo
```bash
sudo setcap cap_net_bind_service=ep $(which python3)
python3 app_modular.py
```
### Issue: Cannot Connect to Server
**Solution:** Check configuration
```bash
cat config_settings.py | grep MONITORING
```
### Issue: Logs Not Sending
**Solution:** Check connectivity
```bash
ping 8.8.8.8
tail -f ./data/log.txt
```
---
## 📞 Documentation Map
| Need | Document |
|------|----------|
| **Quick overview** | → [MODULAR_REFACTORING_SUMMARY.md](MODULAR_REFACTORING_SUMMARY.md) |
| **How to run** | → [QUICKSTART.md](QUICKSTART.md) |
| **Architecture details** | → [MODULAR_ARCHITECTURE.md](MODULAR_ARCHITECTURE.md) |
| **What changed** | → [REFACTORING_COMPLETE.md](REFACTORING_COMPLETE.md) |
| **Configuration options** | → [config_settings.py](config_settings.py) |
| **Client functionality** | → [../PREZENTA_WORK_ANALYSIS.md](../PREZENTA_WORK_ANALYSIS.md) |
---
## 🎯 Decision Tree
**What do you want to do?**
**Run the app?**
- See [QUICKSTART.md](QUICKSTART.md)
- Run: `python3 app_modular.py`
**Change server address?**
- Edit [config_settings.py](config_settings.py)
- Or: `MONITORING_SERVER_HOST=new-server python3 app_modular.py`
**Understand architecture?**
- Read [MODULAR_ARCHITECTURE.md](MODULAR_ARCHITECTURE.md)
**Add new feature?**
- See [MODULAR_ARCHITECTURE.md](MODULAR_ARCHITECTURE.md#adding-new-features)
- Or: `grep -r "def " *.py | head -20`
**Fix a bug?**
- Find module: Check [MODULAR_REFACTORING_SUMMARY.md](MODULAR_REFACTORING_SUMMARY.md#module-overview)
- Read module docstrings
- Edit module file
**Setup auto-start?**
- See [MODULAR_ARCHITECTURE.md](MODULAR_ARCHITECTURE.md#optional-systemd-service)
---
## 📈 Key Metrics
| Metric | Before | After |
|--------|--------|-------|
| Files | 1 | 15 |
| Main file lines | 1334 | 200 |
| Configuration places | 3 | 1 |
| Modules | Monolithic | 11 focused |
| Documentation | Minimal | 4 comprehensive |
| Testability | Difficult | Easy |
| Maintainability | Hard | Easy |
---
## 🎓 Learning Path
1. **Start:** [MODULAR_REFACTORING_SUMMARY.md](MODULAR_REFACTORING_SUMMARY.md) (5 min read)
2. **Run:** `python3 app_modular.py` (2 min)
3. **Test:** `curl http://localhost/status` (1 min)
4. **Learn:** [MODULAR_ARCHITECTURE.md](MODULAR_ARCHITECTURE.md) (15 min read)
5. **Customize:** Edit [config_settings.py](config_settings.py) (5 min)
**Total time: ~30 minutes to complete understanding**
---
## 🚀 Ready to Deploy
All files are production-ready:
- ✅ Code tested and organized
- ✅ Documentation complete
- ✅ Configuration centralized
- ✅ Error handling implemented
- ✅ Backward compatible
**Start using it now:**
```bash
python3 app_modular.py
```
---
**Created:** December 18, 2025
**Status:** ✅ Complete
**Version:** 2.7 (Modular)
**Quality:** Production-Ready
**Documentation:** Comprehensive