# BlueToothLogger Android Application - Technical Project Context

## Project Overview

**Project Name:** BlueToothLogger  
**Package:** `com.wytehat.btlogger`  
**Location:** `/Users/n0tst3v3/bletracker/BlueToothLogger`  
**Type:** Bluetooth tracking and logging application with spatial analysis capabilities

---

## Core Classes and Inheritance

| Class | Extends | Implements | Purpose |
|-------|---------|------------|---------|
| `MainActivity` | Activity | ItemActionListener | Main entry point, UI controller |
| `BluetoothTrackingService` | Service | LocationListener | Background Bluetooth tracking |
| `TrackerDatabase` | SQLiteOpenHelper | - | SQLite database wrapper |
| `MapActivity` | Activity | - | Map visualization |
| `DeviceManagerActivity` | Activity | - | Device management UI |
| `LiveRangeFinderActivity` | Activity | LocationListener, SensorEventListener | Real-time signal finder |
| `BluetoothRadarView` | View | - | Custom radar visualization |
| `DeviceListAdapter` | BaseAdapter | - | List adapter for devices |

---

## BluetoothTrackingService - Technical Details

### Constants
```java
public static final String ACTION_DATA_CHANGED = "com.wytehat.btlogger.DATA_CHANGED"
public static final String ACTION_CONFIG_CHANGED = "com.wytehat.btlogger.CONFIG_CHANGED"
public static final String ACTION_RANGE_MODE = "com.wytehat.btlogger.RANGE_MODE"
private static final int NOTIFICATION_ID = 42
private static final String CHANNEL_ID = "bluetooth_tracking"
private static final String ALERT_CHANNEL_ID = "tracked_item_disconnects"
```

### Fields
```java
private TrackerDatabase db
private LocationManager locationManager
private BluetoothAdapter bluetooth
private Location lastLocation
private boolean receiverRegistered
private boolean rangeModeActive
private int phoneBattery = 100
private final Handler handler = new Handler()
private final HashMap<String, Long> lastPeriodicLog
```

### Key Methods
```java
public void onCreate()
public int onStartCommand(Intent intent, int flags, int startId)
public void onDestroy()
public IBinder onBind(Intent intent)

// Location callbacks
public void onLocationChanged(Location location)
public void onProviderDisabled(String provider)
public void onProviderEnabled(String provider)
public void onStatusChanged(String provider, int status, Bundle extras)

// Bluetooth callbacks
public void onLeScan(BluetoothDevice device, int rssi, byte[] scanRecord)

// Private methods
private void loadLastLocation()
private void configureLocation()
private int shortestActiveInterval()
private void stopLocation()
private void captureFresh(String address, long eventTime)
private TrackerDatabase.Fix currentFix()
private TrackerDatabase.Fix fix(Location location)
private void resolveVendor(String address, int companyId)
private String bytesToHex(byte[] data)
private int parseCompanyId(byte[] scanRecord)
private String infer(DeviceRecord record)
private void disconnectAll(String reason)
private void syncPairedDevices()
private void restartBackgroundScan()
private boolean shouldBackgroundScan()
private boolean isLocationEligible(DeviceRecord record, long now)
private void notifyChanged()
private boolean hasLocationPermission()
private boolean hasBluetoothPermission()
private String address(BluetoothDevice device)
private String name(BluetoothDevice device)
private Location newer(Location first, Location second)
private void showDisconnectAlert(DeviceRecord record, String reason)
private Notification buildNotification()
```

---

## TrackerDatabase - Technical Details

### Constants
```java
private static final String DB_NAME = "bluetooth_tracker.db"
private static final int DB_VERSION = 15
```

### Inner Class: Fix
```java
public static class Fix {
    public double latitude
    public double longitude
    public float accuracy
    public Fix(double lat, double lon, float acc)
}
```

### Key Methods
```java
public TrackerDatabase(Context context)
public void onCreate(SQLiteDatabase db)
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)

// Device tracking
public synchronized void connected(String address, String broadcast, long time, Fix fix)
public synchronized void disconnected(String address, String broadcast, long time, String reason)
public synchronized void telemetry(String address, String broadcast, Integer battery, String vendor, String category, long time)
public synchronized void recordObservation(String address, long time, int rssi, int txPower)
public synchronized void updateLocation(String address, Fix fix, long time)

// Profile and calibration
public synchronized void updateProfile(String address, String title, String photo, String color, long time)
public synchronized void updateCalibration(String address, int txPower, double exponent)

// Range finding
public synchronized void logRangeSample(String address, String sessionId, long time, int rssi, double distance)

// Tracking settings
public synchronized void updateTracking(String address, int minutes, String color)
public synchronized void markTracked(String address, String broadcast)
public synchronized void removeFromTracking(String address)
public synchronized void setMapEnabled(String address, boolean enabled)
public synchronized void setLiveEnabled(String address, boolean enabled)
public synchronized void setTrackBroadcast(String address, boolean enabled)
public synchronized void setShowTrail(String address, boolean shown)
public synchronized void setLocationLocked(String address, boolean locked)
public synchronized void setCustomName(String address, String name)
public synchronized void setDetectedCategory(String address, String category)
public synchronized void setCategory(String address, String category)
public synchronized void setVendor(String address, String vendor)
public synchronized void setManualVendor(String address, String vendor)

// Lookups
public synchronized String lookupOui(String address)
public synchronized String lookupCompany(int companyId)

// Queries
public synchronized DeviceRecord get(String address)
public synchronized List<DeviceRecord> all()
public synchronized List<DeviceRecord> tracked()
public synchronized List<LocationPoint> history(String address, long since)
```

---

## MainActivity - Technical Details

### Constants
```java
private static final int PERMISSIONS = 100
private static final int CAMERA = 200
```

### Fields
```java
private TrackerDatabase db
private DeviceListAdapter adapter
private boolean registered
private DeviceRecord editing
private final Handler refreshHandler = new Handler()
private final Runnable refreshLiveAvailability
private final BroadcastReceiver updates
```

### Key Methods
```java
protected void onCreate(Bundle state)
protected void onResume()
protected void onPause()
protected void onDestroy()

// UI actions
public void edit(DeviceRecord record)
public void map(DeviceRecord record)
public void live(DeviceRecord record)
public void manage(DeviceRecord record)

// Device operations
private void removeTrackedItem(DeviceRecord record)
private void toggleBroadcastTracking(DeviceRecord record)
private void toggleTrail(DeviceRecord record)
private void refind(DeviceRecord record)

// Renaming and settings
private void rename(DeviceRecord record)
private void chooseTracking(DeviceRecord record)
private void chooseColor(DeviceRecord record, int minutes)
private void takePhoto()
protected void onActivityResult(int request, int result, Intent data)
private void showSettings()
private void openNotificationSettings()
private void openAppSettings(String instruction)
private boolean isBatteryOptimizationDisabled()
private void requestBackgroundProtection()
private void showTrackingInformation()

// Permissions
public void onRequestPermissionsResult(int request, String[] permissions, int[] results)
private void requestNeededPermissions()
private void addPermission(List<String> list, String permission)
private void reload()
```

---

## LiveRangeFinderActivity - Technical Details

### Implements
```java
implements LocationListener, SensorEventListener, ItemActionListener
```

### Key Methods
```java
protected void onCreate(Bundle savedState)
protected void onPause()
protected void onDestroy()

// Location callbacks
public void onLocationChanged(Location location)
public void onProviderDisabled(String provider)
public void onProviderEnabled(String provider)
public void onStatusChanged(String provider, int status, Bundle extras)

// Sensor callbacks
public void onSensorChanged(SensorEvent event)
public void onAccuracyChanged(Sensor sensor, int accuracy)

// Bluetooth callbacks
public void onScanResult(int callbackType, ScanResult result)
public void onBatchScanResults(List<ScanResult> results)
public void onScanFailed(int errorCode)

// UI actions
private void startSearch()
private void stopSearch(String message)
private void tagItemHere()
private void startCalibration()
private void updateRadar()
private void updateRangeDisplay()
private void updateDistanceDisplay()
private void updateCalibrationDisplay()
private void updateSearchDisplay()
private void updateSearchStatus()
private void updateSearchProgress()
private void updateSearchResults()
private void updateSearchSettings()
private void updateSearchControls()
private void updateSearchUI()
```

---

## MapActivity - Technical Details

### Implements
```java
implements LocationListener, SensorEventListener, ItemActionListener
```

### Key Methods
```java
protected void onCreate(Bundle state)
protected void onResume()
protected void onPause()
protected void onDestroy()

// Location callbacks
public void onLocationChanged(Location location)
public void onProviderDisabled(String provider)
public void onProviderEnabled(String provider)
public void onStatusChanged(String provider, int status, Bundle extras)

// Sensor callbacks
public void onSensorChanged(SensorEvent event)
public void onAccuracyChanged(Sensor sensor, int accuracy)

// Map operations
private void updateMap()
private void updateMarkers()
private void updateTrails()
private void updateCamera()
private void updateLocation()
private void updateRange()
private void updateCalibration()
private void updateSearch()
private void updateSettings()
private void updateUI()
```

---

## DeviceManagerActivity - Technical Details

### Key Methods
```java
protected void onCreate(Bundle state)
protected void onPause()
protected void onDestroy()

// Bluetooth scanning
private void startScan()
private void stopScan()
private void refreshCategoryOptions()
private void updateRadar()

// Device management
private void toggleMap(DeviceRecord record, Button button)
private void toggleTrack(DeviceRecord record, Button button)
private void editSignal(DeviceRecord record)
private void confirmRemoveSignal(SignalEntry entry)
private void copyText(String label, String text)

// Adapters
private class SignalGridAdapter extends BaseAdapter
private class PairedAdapter extends BaseAdapter
```

---

## BluetoothRadarView - Technical Details

### Extends
```java
extends View
```

### Key Features
- Custom radar-like visualization
- Radial gradient rendering
- Touch event handling
- Signal strength visualization

---

## Data Models

### DeviceRecord
```java
public class DeviceRecord {
    public String address
    public String title
    public String broadcast
    public String category
    public String vendor
    public String color
    public int trackingMinutes
    public boolean mapEnabled
    public boolean liveEnabled
    public boolean trackBroadcast
    public boolean showTrail
    public boolean locationLocked
    public int txPower
    public double exponent
    public long lastSeen
    public long lastLocation
    public int battery
    public String photo
}
```

### LocationPoint
```java
public class LocationPoint {
    public String address
    public double latitude
    public double longitude
    public float accuracy
    public long time
}
```

---

## Key Android Components

### Permissions Required
- `BLUETOOTH` - Bluetooth scanning and discovery
- `BLUETOOTH_ADMIN` - Bluetooth administration
- `ACCESS_FINE_LOCATION` - Precise location access
- `ACCESS_COARSE_LOCATION` - Approximate location access
- `FOREGROUND_SERVICE` - Background service execution
- `CAMERA` - Device photo capture
- `RECEIVE_BOOT_COMPLETED` - Auto-start on boot

### Services
- `BluetoothTrackingService` - Foreground service for continuous tracking
- `LocationManager` - GPS and network location services
- `BluetoothAdapter` - Bluetooth scanning and discovery

### Broadcast Receivers
- `DATA_CHANGED` - Device data updates
- `CONFIG_CHANGED` - Configuration changes
- `RANGE_MODE` - Range finder mode changes
- `BOOT_COMPLETED` - System boot completion

---

## Signal Processing Flow

```
Bluetooth Scan → LeScanCallback → RSSI Reading
                                    ↓
                          BluetoothTrackingService
                                    ↓
                          captureFresh() → Fix()
                                    ↓
                          TrackerDatabase.recordObservation()
                                    ↓
                          SpatialGradientEngine Analysis
                                    ↓
                          RangeStateMachine State Update
                                    ↓
                          MapActivity / BluetoothRadarView Update
```

---

## Database Schema (Version 15)

### Tables
- `devices` - Device records and metadata
- `locations` - GPS location history
- `observations` - RSSI observations
- `telemetry` - Battery and vendor info
- `calibrations` - TX power and exponent
- `range_samples` - Range finding data
- `vendors` - Vendor lookup table
- `categories` - Device categories

---

*Document generated from technical analysis of Java source files*
