Merge branch 'develop'

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dadaloop82
2026-05-16 08:35:44 +00:00
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# ~~EverShelf Scale Gateway~~ — DEPRECATED
> ⚠️ **This app is deprecated and no longer maintained.**
>
> As of **EverShelf Kiosk v1.6.0**, BLE scale support is fully integrated into the kiosk app itself. You no longer need to install or configure this separate gateway app.
>
> **If you are using the EverShelf Kiosk app** → the scale gateway runs automatically as a background service. Configure your Bluetooth scale in **step 4 of the setup wizard**.
>
> **If you are NOT using the kiosk app** (standalone Android tablet) → you may still use this APK, but no new releases will be published.
---
# EverShelf Scale Gateway (legacy)
> Android gateway app that bridges Bluetooth LE smart scales with EverShelf via WebSocket.
---
## How it works
```
Smart Scale ──(BLE)──► Android Gateway App ──(WebSocket/LAN)──► EverShelf Server ──(SSE)──► Browser
```
The app runs a local WebSocket server (port **8765**) on your Android device. The EverShelf server connects to it via a server-side relay (`api/scale_relay.php` SSE + `api/scale_ping.php` WebSocket client), avoiding mixed-content (HTTPS→WS) issues. Weight readings are streamed to the browser in real time.
> **Kiosk integration (v1.6.0+):** The gateway is now **built into the EverShelf Kiosk app** as a foreground service. This separate app is not needed when using the kiosk.
---
## Supported scale protocols
| Protocol | Service UUID | Notes |
|---|---|---|
| **Bluetooth SIG Weight Scale** | `0x181D` / char `0x2A9D` | Most compatible; works with most smart scales |
| **Bluetooth SIG Body Composition** | `0x181B` / char `0x2A9C` | Reports weight + body fat %, BMI |
| **Generic fallback** | Any notifiable characteristic | Auto-heuristic parsing for 100+ models |
### Verified compatible scales (community list)
- Xiaomi Mi Body Composition Scale 2
- Renpho Smart Body Fat Scale
- INEVIFIT Smart Body Fat Scale
- Any OpenScale-compatible scale (see [openScale supported devices](https://github.com/oliexdev/openScale/wiki/Supported-scales))
> **Your scale (B09MRXVBV6):** If it implements the standard BLE Weight Scale or Body Composition profile (very likely for modern Amazon smart scales), the gateway will connect automatically. If not, check the [openScale wiki](https://github.com/oliexdev/openScale/wiki/Supported-scales) and open an issue.
---
## Download
Download the latest APK directly: **[evershelf-scale-gateway.apk](https://github.com/dadaloop82/EverShelf/releases/latest/download/evershelf-scale-gateway.apk)**
---
## Requirements
- Android **7.0** (API 24) or later
- Bluetooth LE (BLE) support
- Both the Android device and the device running EverShelf must be on the **same Wi-Fi network**
---
## Setup (step by step)
### 1. Install the APK
Download and install the APK from the Releases page. You may need to allow "Install from unknown sources" in Android settings.
### 2. Launch the app
The app starts the WebSocket gateway server immediately. You will see the **gateway URL** (e.g. `ws://192.168.1.100:8765`) at the top.
### 3. Connect your scale
Tap **"Cerca Bilance Bluetooth"** (Find Bluetooth Scales). Make sure your scale is turned on. Tap it in the list to connect.
### 4. Configure EverShelf
In EverShelf → ⚙️ Settings → **⚖️ Bilancia Smart**:
1. Enable the toggle
2. Paste the gateway URL shown in the Android app
3. Tap **"Testa connessione"** — you should see ✅
### 5. Use it
When adding or consuming a product with unit **g** or **ml**, a **"⚖️ Leggi dalla bilancia"** button appears. Tap it, place the product on the scale, and the weight is filled in automatically.
---
## WebSocket protocol reference
All messages are JSON. The server sends these to connected clients:
```json
// Scale status update
{"type":"status","state":"connected","device":"Mi Scale 2","battery":85}
{"type":"status","state":"disconnected"}
// Weight reading (broadcast continuously while scale is active)
{"type":"weight","value":72.50,"unit":"kg","stable":true,"timestamp":1712345678000}
// Response to ping
{"type":"pong"}
```
Clients can send:
```json
{"type":"get_status"} // Request current status
{"type":"get_weight"} // Request next stable weight reading
{"type":"ping"} // Keep-alive
```
---
## Build from source
### Prerequisites
- Android Studio Hedgehog (2023.1) or later
- Java 8+
### Steps
```bash
# 1. Clone the repo
git clone https://github.com/dadaloop82/EverShelf.git
cd EverShelf/evershelf-scale-gateway
# 2. Download the Gradle wrapper (if not included)
gradle wrapper --gradle-version 8.4
# 3. Build debug APK
./gradlew assembleDebug
# APK is at: app/build/outputs/apk/debug/app-debug.apk
```
---
## Project structure
```
evershelf-scale-gateway/
├── app/src/main/
│ ├── kotlin/it/dadaloop/evershelf/scalegate/
│ │ ├── MainActivity.kt — UI, orchestration
│ │ ├── BleScaleManager.kt — BLE scanning & GATT connection
│ │ ├── ScaleProtocol.kt — Parsing for all supported protocols
│ │ └── GatewayWebSocketServer.kt — WebSocket server (Java-WebSocket)
│ ├── res/layout/
│ │ ├── activity_main.xml
│ │ └── item_device.xml
│ └── AndroidManifest.xml
├── build.gradle.kts
└── settings.gradle.kts
```
---
## License
MIT — see [LICENSE](../LICENSE)
@@ -1,41 +0,0 @@
plugins {
id("com.android.application")
id("org.jetbrains.kotlin.android")
}
android {
namespace = "it.dadaloop.evershelf.scalegate"
compileSdk = 34
defaultConfig {
applicationId = "it.dadaloop.evershelf.scalegate"
minSdk = 24
targetSdk = 34
versionCode = 8
versionName = "2.1.1"
}
buildFeatures {
viewBinding = true
}
compileOptions {
sourceCompatibility = JavaVersion.VERSION_1_8
targetCompatibility = JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = "1.8"
}
}
dependencies {
implementation("androidx.core:core-ktx:1.12.0")
implementation("androidx.appcompat:appcompat:1.6.1")
implementation("com.google.android.material:material:1.11.0")
implementation("androidx.constraintlayout:constraintlayout:2.1.4")
implementation("androidx.recyclerview:recyclerview:1.3.2")
// WebSocket server
implementation("org.java-websocket:Java-WebSocket:1.5.5")
// Coroutines
implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:1.7.3")
}
@@ -1,64 +0,0 @@
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android">
<!-- BLE permissions for Android < 12 -->
<uses-permission android:name="android.permission.BLUETOOTH"
android:maxSdkVersion="30" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"
android:maxSdkVersion="30" />
<!-- BLE permissions for Android 12+ -->
<uses-permission android:name="android.permission.BLUETOOTH_SCAN"
android:usesPermissionFlags="neverForLocation" />
<uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
<!-- Location (required for BLE scanning on Android 611) -->
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<!-- Network (for WebSocket server) -->
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<!-- Keep screen on while gateway is active -->
<uses-permission android:name="android.permission.WAKE_LOCK" />
<!-- Self-update: install APK downloaded at runtime -->
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
<uses-feature android:name="android.hardware.bluetooth_le" android:required="true" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.MaterialComponents.Light.NoActionBar">
<activity
android:name=".MainActivity"
android:exported="true"
android:screenOrientation="portrait"
android:windowSoftInputMode="adjustResize">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- FileProvider for serving the downloaded APK to the installer -->
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="${applicationId}.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_paths" />
</provider>
</application>
</manifest>
@@ -1,455 +0,0 @@
package it.dadaloop.evershelf.scalegate
import android.Manifest
import android.bluetooth.*
import android.bluetooth.le.*
import android.content.Context
import android.content.pm.PackageManager
import android.os.Build
import android.os.Handler
import android.os.Looper
import android.util.Log
import androidx.core.content.ContextCompat
private const val TAG = "BleScaleManager"
private const val SCAN_PERIOD_MS = 15_000L
private const val PREFS_NAME = "evershelf_gateway"
private const val PREF_LAST_DEVICE = "last_device_address"
/**
* Represents a discovered BLE device during scan.
*/
data class BleDeviceInfo(
val device: BluetoothDevice,
val name: String,
val rssi: Int,
val proximity: String,
val scaleScore: Int,
)
/**
* Callback interface for BLE events dispatched back to the UI.
*/
interface BleScaleListener {
fun onDeviceFound(info: BleDeviceInfo)
fun onConnecting(device: BluetoothDevice)
fun onConnected(deviceName: String)
fun onDisconnected()
fun onWeightReceived(reading: WeightReading)
fun onBatteryReceived(level: Int)
fun onError(message: String)
fun onScanStopped()
fun onDebugEvent(message: String)
}
/**
* Manages BLE scanning and connection to a smart scale.
* All listener callbacks are dispatched on the main thread.
*/
class BleScaleManager(
private val context: Context,
private val listener: BleScaleListener,
) {
private val bluetoothManager = context.getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager
private val bluetoothAdapter: BluetoothAdapter? get() = bluetoothManager.adapter
private val mainHandler = Handler(Looper.getMainLooper())
private var leScanner: BluetoothLeScanner? = null
private var gatt: BluetoothGatt? = null
private var isScanning = false
private var connectedDeviceName: String = ""
private var autoConnectAddress: String? = null
// The characteristics we will subscribe to (multiple may exist).
private val pendingSubscriptions = ArrayDeque<BluetoothGattCharacteristic>()
// ─── Public state ──────────────────────────────────────────────────────────
val isConnected: Boolean get() = gatt != null && connectedDeviceName.isNotEmpty()
// ─── Saved device (auto-reconnect) ─────────────────────────────────────────
fun getSavedDeviceAddress(): String? {
return context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
.getString(PREF_LAST_DEVICE, null)
}
private fun saveDeviceAddress(address: String) {
context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
.edit().putString(PREF_LAST_DEVICE, address).apply()
}
fun enableAutoConnect() {
autoConnectAddress = getSavedDeviceAddress()
}
// ─── Permissions helper ────────────────────────────────────────────────────
fun hasRequiredPermissions(): Boolean {
return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
ContextCompat.checkSelfPermission(context, Manifest.permission.BLUETOOTH_SCAN) == PackageManager.PERMISSION_GRANTED &&
ContextCompat.checkSelfPermission(context, Manifest.permission.BLUETOOTH_CONNECT) == PackageManager.PERMISSION_GRANTED
} else {
ContextCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED
}
}
// ─── Scanning ──────────────────────────────────────────────────────────────
fun startScan() {
val adapter = bluetoothAdapter ?: run {
listener.onError("Bluetooth not available on this device.")
return
}
if (!adapter.isEnabled) {
listener.onError("Bluetooth is off. Enable it and try again.")
return
}
if (isScanning) stopScan()
leScanner = adapter.bluetoothLeScanner
val settings = ScanSettings.Builder()
.setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY)
.build()
// No service UUID filters — many consumer scales use proprietary UUIDs
// and would be invisible with strict filtering. We show all named BLE devices.
isScanning = true
try {
leScanner?.startScan(null, settings, scanCallback)
} catch (e: Exception) {
leScanner?.startScan(scanCallback)
}
// Auto-stop after SCAN_PERIOD_MS
mainHandler.postDelayed({
stopScan()
listener.onScanStopped()
}, SCAN_PERIOD_MS)
}
fun stopScan() {
if (!isScanning) return
isScanning = false
try {
leScanner?.stopScan(scanCallback)
} catch (e: Exception) { /* ignore */ }
leScanner = null
}
private val scanCallback = object : ScanCallback() {
override fun onScanResult(callbackType: Int, result: ScanResult) {
val device = result.device
val name = result.scanRecord?.deviceName?.takeIf { it.isNotBlank() }
?: getDeviceName(device)
val proximity = rssiToProximity(result.rssi)
val score = scoreLikelyScale(name, result.scanRecord)
val info = BleDeviceInfo(device, name, result.rssi, proximity, score)
mainHandler.post { listener.onDeviceFound(info) }
// Auto-connect to saved device
if (autoConnectAddress != null && device.address == autoConnectAddress && !isConnected) {
autoConnectAddress = null // prevent re-trigger
mainHandler.post {
listener.onDebugEvent("\uD83D\uDD04 Auto-connecting to $name (${device.address})")
connect(device)
}
}
}
override fun onScanFailed(errorCode: Int) {
isScanning = false
mainHandler.post { listener.onError("BLE scan failed (code: $errorCode)") }
}
}
private fun getDeviceName(device: BluetoothDevice): String {
return try {
device.name?.takeIf { it.isNotBlank() } ?: "Unnamed"
} catch (e: SecurityException) {
"Unnamed"
}
}
private fun rssiToProximity(rssi: Int) = when {
rssi >= -60 -> "📶 Near"
rssi >= -80 -> "📶 Medium"
else -> "📶 Far"
}
private fun scoreLikelyScale(name: String, scanRecord: android.bluetooth.le.ScanRecord?): Int {
var score = 0
val lower = name.lowercase()
// Kitchen / food scale brand and model keywords
val foodKeywords = listOf(
"scale", "bilancia", "kitchen", "food", "cucina",
"coffee", "caffe", "balance", "weight", "waage",
"arboleaf", "ck10", "ck20", "ek-",
"acaia", "felicita", "decent", "skale",
"timemore", "brewista", "hario",
"greater goods", "ozeri", "etekcity", "nutri",
"nicewell", "koios", "renpho", "eatsmart",
)
if (foodKeywords.any { lower.contains(it) }) score += 10
// Negative: body/fitness scale keywords (demote but don't hide)
val bodyKeywords = listOf(
"body", "fat", "bmi", "composition", "fitness",
"mi body", "lepulse", "qardio", "garmin", "withings",
)
if (bodyKeywords.any { lower.contains(it) }) score -= 5
// Service UUID scoring
scanRecord?.serviceUuids?.let { uuids ->
val us = uuids.map { it.uuid.toString().lowercase() }
// SIG Weight Scale service
if (us.any { it.startsWith("0000181d") }) score += 15
// Common vendor services on kitchen scales
if (us.any { it.startsWith("0000ffe0") || it.startsWith("0000fff0") }) score += 10
// Acaia coffee scale
if (us.any { it.startsWith("49535343") }) score += 20
// Body Composition service = body scale, demote
if (us.any { it.startsWith("0000181b") }) score -= 10
}
return score
}
// ─── Connection ────────────────────────────────────────────────────────────
fun connect(device: BluetoothDevice) {
stopScan()
disconnect()
connectedDeviceName = ""
ScaleProtocol.resetState()
mainHandler.post { listener.onConnecting(device) }
try {
gatt = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
device.connectGatt(context, false, gattCallback, BluetoothDevice.TRANSPORT_LE)
} else {
device.connectGatt(context, false, gattCallback)
}
} catch (e: SecurityException) {
mainHandler.post { listener.onError("Missing permission: ${e.message}") }
}
}
fun disconnect() {
pendingSubscriptions.clear()
try {
gatt?.disconnect()
gatt?.close()
} catch (e: Exception) { /* ignore */ }
gatt = null
connectedDeviceName = ""
}
// ─── GATT callbacks ────────────────────────────────────────────────────────
private val gattCallback = object : BluetoothGattCallback() {
override fun onConnectionStateChange(gatt: BluetoothGatt, status: Int, newState: Int) {
when (newState) {
BluetoothProfile.STATE_CONNECTED -> {
Log.d(TAG, "Connected — discovering services…")
mainHandler.postDelayed({ gatt.discoverServices() }, 500)
}
BluetoothProfile.STATE_DISCONNECTED -> {
Log.d(TAG, "Disconnected (status=$status)")
this@BleScaleManager.gatt?.close()
this@BleScaleManager.gatt = null
connectedDeviceName = ""
mainHandler.post { listener.onDisconnected() }
}
}
}
override fun onServicesDiscovered(gatt: BluetoothGatt, status: Int) {
if (status != BluetoothGatt.GATT_SUCCESS) {
mainHandler.post { listener.onError("Servizi GATT non trovati (status=$status)") }
return
}
val targetChars = mutableListOf<BluetoothGattCharacteristic>()
// Priority 1: BLE SIG Weight Scale Service
gatt.getService(BleUuids.WEIGHT_SCALE_SERVICE)
?.getCharacteristic(BleUuids.WEIGHT_MEASUREMENT_CHAR)
?.let { targetChars.add(it) }
// Priority 2: Common vendor service FFE0 (arboleaf, generic kitchen scales)
gatt.getService(BleUuids.FFE0)?.let { svc ->
svc.getCharacteristic(BleUuids.FFE1)?.let { targetChars.add(it) }
}
// Priority 3: Common vendor service FFF0
gatt.getService(BleUuids.FFF0)?.let { svc ->
svc.getCharacteristic(BleUuids.FFF4)?.let { targetChars.add(it) }
?: svc.getCharacteristic(BleUuids.FFF1)?.let { targetChars.add(it) }
}
// Priority 4: Acaia coffee scale
gatt.getService(BleUuids.ACAIA_SERVICE)?.let { svc ->
svc.getCharacteristic(BleUuids.ACAIA_CHAR)?.let { targetChars.add(it) }
}
// Fallback: any notifiable characteristic from remaining services
if (targetChars.isEmpty()) {
for (service in gatt.services) {
if (service.uuid.toString().startsWith("00001800") ||
service.uuid.toString().startsWith("00001801")) continue
for (char in service.characteristics) {
val props = char.properties
if ((props and BluetoothGattCharacteristic.PROPERTY_NOTIFY) != 0 ||
(props and BluetoothGattCharacteristic.PROPERTY_INDICATE) != 0) {
if (!targetChars.contains(char)) targetChars.add(char)
}
}
}
}
if (targetChars.isEmpty()) {
mainHandler.post { listener.onError("No weight characteristic found. Make sure it's a BLE kitchen scale.") }
return
}
// Battery (optional)
gatt.getService(BleUuids.BATTERY_SERVICE)
?.getCharacteristic(BleUuids.BATTERY_LEVEL_CHAR)
?.let { targetChars.add(it) }
// Debug: log all discovered services and characteristics
val dbg = buildString {
append("GATT services (${gatt.services.size}):\n")
for (svc in gatt.services) {
append(" SVC: ${svc.uuid}\n")
for (ch in svc.characteristics) {
val p = ch.properties
val flags = buildString {
if (p and BluetoothGattCharacteristic.PROPERTY_NOTIFY != 0) append("N")
if (p and BluetoothGattCharacteristic.PROPERTY_INDICATE != 0) append("I")
if (p and BluetoothGattCharacteristic.PROPERTY_READ != 0) append("R")
if (p and BluetoothGattCharacteristic.PROPERTY_WRITE != 0) append("W")
}
append(" CHAR: ${ch.uuid} [$flags]\n")
}
}
append("Subscribed to ${targetChars.size} characteristics")
}
mainHandler.post { listener.onDebugEvent(dbg) }
// Save device for auto-reconnect
try { gatt.device?.address?.let { saveDeviceAddress(it) } } catch (_: SecurityException) {}
pendingSubscriptions.clear()
pendingSubscriptions.addAll(targetChars)
val deviceName = try { gatt.device?.name ?: "Scale" } catch (e: SecurityException) { "Scale" }
connectedDeviceName = deviceName
mainHandler.post { listener.onConnected(deviceName) }
// Subscribe one at a time (Android BLE requires sequential descriptor writes)
subscribeNext(gatt)
}
override fun onDescriptorWrite(gatt: BluetoothGatt, descriptor: BluetoothGattDescriptor, status: Int) {
// Subscribe to the next characteristic
subscribeNext(gatt)
}
@Suppress("DEPRECATION")
override fun onCharacteristicChanged(
gatt: BluetoothGatt,
characteristic: BluetoothGattCharacteristic,
) {
val data = characteristic.value ?: return
processCharacteristicData(characteristic, data)
}
// Android 13+ override
override fun onCharacteristicChanged(
gatt: BluetoothGatt,
characteristic: BluetoothGattCharacteristic,
value: ByteArray,
) {
processCharacteristicData(characteristic, value)
}
@Suppress("DEPRECATION")
override fun onCharacteristicRead(
gatt: BluetoothGatt,
characteristic: BluetoothGattCharacteristic,
status: Int,
) {
if (status == BluetoothGatt.GATT_SUCCESS && characteristic.uuid == BleUuids.BATTERY_LEVEL_CHAR) {
val level = characteristic.value?.firstOrNull()?.toInt()?.and(0xFF)
if (level != null) mainHandler.post { listener.onBatteryReceived(level) }
}
}
}
// ─── Helpers ───────────────────────────────────────────────────────────────
private fun subscribeNext(gatt: BluetoothGatt) {
val char = pendingSubscriptions.removeFirstOrNull() ?: return
// Battery characteristic — read once instead of notify
if (char.uuid == BleUuids.BATTERY_LEVEL_CHAR) {
try { gatt.readCharacteristic(char) } catch (e: SecurityException) { /* ignore */ }
return
}
val props = char.properties
val notifyType = when {
(props and BluetoothGattCharacteristic.PROPERTY_INDICATE) != 0 ->
BluetoothGattDescriptor.ENABLE_INDICATION_VALUE
else -> BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE
}
try {
gatt.setCharacteristicNotification(char, true)
val descriptor = char.getDescriptor(CCCD_UUID) ?: run {
// No CCCD — skip and try next
subscribeNext(gatt)
return
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
gatt.writeDescriptor(descriptor, notifyType)
} else {
@Suppress("DEPRECATION")
descriptor.value = notifyType
@Suppress("DEPRECATION")
gatt.writeDescriptor(descriptor)
}
} catch (e: SecurityException) {
Log.e(TAG, "SecurityException enabling notification", e)
}
}
private fun processCharacteristicData(char: BluetoothGattCharacteristic, data: ByteArray) {
// Battery level
if (char.uuid == BleUuids.BATTERY_LEVEL_CHAR && data.isNotEmpty()) {
val level = data[0].toInt() and 0xFF
mainHandler.post { listener.onBatteryReceived(level) }
return
}
// Debug: log raw bytes received
val hex = data.joinToString(" ") { "%02X".format(it) }
mainHandler.post { listener.onDebugEvent("📡 ${char.uuid}\n HEX [${data.size}B]: $hex") }
// Parse weight data
val reading = ScaleProtocol.parse(char, data) { msg ->
mainHandler.post { listener.onDebugEvent(msg) }
}
if (reading != null && reading.value > 0f) {
mainHandler.post { listener.onWeightReceived(reading) }
} else {
val rawDump = data.mapIndexed { i, b ->
val v = b.toInt() and 0xFF
val h = "%02X".format(v)
"[$i]=$v(0x$h)"
}.joinToString(" ")
mainHandler.post { listener.onDebugEvent("\u26a0\ufe0f Weight not decoded\n RAW: $rawDump") }
}
}
}
@@ -1,249 +0,0 @@
package it.dadaloop.evershelf.scalegate
import android.content.Context
import android.os.Build
import android.util.Log
import org.json.JSONArray
import org.json.JSONObject
import java.io.BufferedReader
import java.io.InputStreamReader
import java.io.OutputStreamWriter
import java.net.HttpURLConnection
import java.net.URL
import java.text.SimpleDateFormat
import java.util.Date
import java.util.Locale
import java.util.concurrent.Executors
/**
* Centralized error reporter for EverShelf Scale Gateway.
*
* Unlike the Kiosk (which relays errors through the EverShelf PHP backend),
* the Scale Gateway has no knowledge of the EverShelf server URL, so it
* calls the GitHub Issues REST API directly.
*
* The token is intentionally hardcoded — it is scoped only to
* Issues (Read+Write) on this single repository.
*
* Usage:
* ErrorReporter.init(applicationContext)
* ErrorReporter.report(exception, "methodName", mapOf("extra" to "info"))
* ErrorReporter.reportMessage("ble-disconnect", "Scale disconnected after 3 retries")
*/
object ErrorReporter {
private const val TAG = "ScaleGWErrorReporter"
// ── XOR-obfuscated GitHub token (scoped: Issues R+W on dadaloop82/EverShelf) ──
// Stored encoded so the literal token string never appears in source or git history.
private const val GH_TOKEN_ENC = "23580718460c2c444031290243627e7971622b29035e2a647726407d194f61440b6e05246a0c067c79730e77114b774501730043433d1866682225511b5443417170444443142941673c4046086c05737363293e7821006e470a466a1d"
private const val GH_TOKEN_KEY = "D1sp3ns4!Ev3r#26"
private const val GH_REPO = "dadaloop82/EverShelf"
private var _ghTokenCache: String? = null
private fun ghToken(): String {
_ghTokenCache?.let { return it }
val enc = GH_TOKEN_ENC.chunked(2).map { it.toInt(16).toByte() }.toByteArray()
val key = GH_TOKEN_KEY
val out = String(ByteArray(enc.size) { i -> (enc[i].toInt() xor key[i % key.length].code).toByte() })
_ghTokenCache = out
return out
}
// SharedPreferences key for pending (unsent) crash reports
private const val PREFS_NAME = "evershelf_scalegw_errors"
private const val KEY_PENDING = "pending_crash_json"
private val executor = Executors.newSingleThreadExecutor()
private val sentFingerprints = mutableSetOf<String>()
private var appVersion: String = "unknown"
private var deviceInfo: String = ""
private lateinit var appContext: Context
/**
* Call once in MainActivity.onCreate() or Application.onCreate().
*/
fun init(context: Context) {
appContext = context.applicationContext
deviceInfo = "${Build.MANUFACTURER} ${Build.MODEL} (Android ${Build.VERSION.RELEASE})"
try {
val pi = context.packageManager.getPackageInfo(context.packageName, 0)
appVersion = pi.versionName ?: "unknown"
} catch (_: Exception) {}
// Send any crash report that was saved from the previous session
sendPendingCrash()
// Install global UncaughtExceptionHandler
val previous = Thread.getDefaultUncaughtExceptionHandler()
Thread.setDefaultUncaughtExceptionHandler { thread, throwable ->
try {
val crash = buildPayload(
type = "uncaught-exception",
message = "${throwable.javaClass.simpleName}: ${throwable.message}",
stack = throwable.stackTraceToString(),
context = mapOf("thread" to thread.name)
)
// Save to prefs first (in case network POST fails before process dies)
savePendingCrash(crash)
// Try immediate send (synchronous — we're already off main thread in the handler)
postToGitHub(crash)
clearPendingCrash()
} catch (_: Exception) {}
previous?.uncaughtException(thread, throwable)
}
}
/** Report a caught [Throwable] asynchronously. */
fun report(throwable: Throwable, location: String = "", extra: Map<String, Any?> = emptyMap()) {
val ctx = mutableMapOf<String, Any?>("device" to deviceInfo)
if (location.isNotEmpty()) ctx["location"] = location
ctx.putAll(extra)
enqueue(
type = "scale-exception",
message = "${throwable.javaClass.simpleName}: ${throwable.message}",
stack = throwable.stackTraceToString(),
context = ctx
)
}
/** Report a non-exception event (e.g. BLE disconnect, WebSocket error). */
fun reportMessage(type: String, message: String, extra: Map<String, Any?> = emptyMap()) {
val ctx = mutableMapOf<String, Any?>("device" to deviceInfo)
ctx.putAll(extra)
enqueue(type = type, message = message, stack = "", context = ctx)
}
// ── Internal ─────────────────────────────────────────────────────────────
private fun fingerprint(type: String, message: String) =
"${type}:${message.take(120)}".hashCode().toString(16)
private fun enqueue(type: String, message: String, stack: String, context: Map<String, Any?>) {
val fp = fingerprint(type, message)
synchronized(sentFingerprints) {
if (!sentFingerprints.add(fp)) return
}
val payload = buildPayload(type, message, stack, context)
executor.execute { postToGitHub(payload) }
}
private fun buildPayload(type: String, message: String, stack: String, context: Map<String, Any?>): JSONObject {
val ctxJson = JSONObject()
context.forEach { (k, v) -> ctxJson.put(k, v) }
return JSONObject().apply {
put("source", "scale")
put("type", type)
put("message", message)
put("stack", stack)
put("context", ctxJson)
put("version", appVersion)
put("user_agent", "EverShelf-ScaleGateway/$appVersion (Android ${Build.VERSION.RELEASE}; ${Build.MODEL})")
put("ts", SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.US).format(Date()))
}
}
/** Persist crash payload to SharedPreferences so it survives a process kill. */
private fun savePendingCrash(payload: JSONObject) {
appContext.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
.edit().putString(KEY_PENDING, payload.toString()).apply()
}
private fun clearPendingCrash() {
appContext.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
.edit().remove(KEY_PENDING).apply()
}
/** On startup, check if there's an unsent crash report from the previous session. */
private fun sendPendingCrash() {
val json = appContext.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
.getString(KEY_PENDING, null) ?: return
clearPendingCrash() // remove before sending to prevent re-sending on next crash
executor.execute {
try {
val payload = JSONObject(json)
// Tag it as a "survived-crash" so we know it was saved and retried
payload.put("type", "uncaught-exception-survived")
payload.put("note", "Sent on next launch after crash")
postToGitHub(payload)
} catch (_: Exception) {}
}
}
/**
* Create a GitHub Issue (or add a comment to an existing one with the same fingerprint).
* Uses the GitHub Issues Search API to deduplicate.
*/
private fun postToGitHub(payload: JSONObject) {
val source = payload.optString("source", "scale")
val type = payload.optString("type", "error")
val message = payload.optString("message", "")
val stack = payload.optString("stack", "")
val version = payload.optString("version", "")
val ua = payload.optString("user_agent", "")
val ts = payload.optString("ts", "")
val ctxJson = payload.optJSONObject("context") ?: JSONObject()
val fp = fingerprint(type, message)
// ── 1. Search for existing open issue ──────────────────────────────
val searchQ = "repo:$GH_REPO is:issue is:open label:auto-report \"fp:$fp\" in:body"
val searchUrl = "https://api.github.com/search/issues?q=${java.net.URLEncoder.encode(searchQ, "UTF-8")}&per_page=1"
val searchResult = ghGet(searchUrl) ?: JSONObject()
val existingNumber = searchResult.optJSONArray("items")?.optJSONObject(0)?.optInt("number", 0)?.takeIf { it > 0 }
// ── 2. Build body ─────────────────────────────────────────────────
val ctxMd = if (ctxJson.length() > 0) "\n**Context:**\n```json\n${ctxJson.toString(2)}\n```\n" else ""
val stackMd = if (stack.isNotEmpty()) "\n**Stack trace:**\n```\n$stack\n```\n" else ""
if (existingNumber != null) {
// Comment on existing issue
val body = "### 🔁 Recurrence — $ts\n**Source:** `$source` | **Type:** `$type`\n**UA:** `$ua`\n$ctxMd$stackMd\n---\n_fp:${fp}_"
ghPost("https://api.github.com/repos/$GH_REPO/issues/$existingNumber/comments", JSONObject().put("body", body))
} else {
// Create new issue
val shortMsg = if (message.length > 70) "${message.take(70)}" else message
val title = "[SCALE] $shortMsg"
val body = "## 🚨 Automatic Error Report\n\n**Source:** `$source` \n**Type:** `$type` \n**Reported at:** $ts \n**UA:** `$ua` \n**Version:** `$version`\n\n**Error message:**\n> $message\n$stackMd$ctxMd\n---\n<!-- auto-report fp:$fp -->\n_This issue was created automatically by EverShelf Scale Gateway error reporter. fp:`${fp}`_"
ghPost(
"https://api.github.com/repos/$GH_REPO/issues",
JSONObject()
.put("title", title)
.put("body", body)
.put("labels", JSONArray().put("auto-report").put("scale-error"))
)
}
}
private fun ghGet(url: String): JSONObject? = try {
val conn = URL(url).openConnection() as HttpURLConnection
conn.setRequestProperty("Authorization", "token ${ghToken()}")
conn.setRequestProperty("Accept", "application/vnd.github+json")
conn.setRequestProperty("X-GitHub-Api-Version", "2022-11-28")
conn.setRequestProperty("User-Agent", "EverShelf-ScaleGateway-ErrorReporter/1.0")
conn.connectTimeout = 8000
conn.readTimeout = 8000
val raw = BufferedReader(InputStreamReader(conn.inputStream)).readText()
conn.disconnect()
JSONObject(raw)
} catch (e: Exception) { Log.w(TAG, "ghGet failed: ${e.message}"); null }
private fun ghPost(url: String, payload: JSONObject): Int = try {
val conn = URL(url).openConnection() as HttpURLConnection
conn.requestMethod = "POST"
conn.setRequestProperty("Authorization", "token ${ghToken()}")
conn.setRequestProperty("Accept", "application/vnd.github+json")
conn.setRequestProperty("X-GitHub-Api-Version", "2022-11-28")
conn.setRequestProperty("User-Agent", "EverShelf-ScaleGateway-ErrorReporter/1.0")
conn.setRequestProperty("Content-Type", "application/json; charset=utf-8")
conn.doOutput = true
conn.connectTimeout = 8000
conn.readTimeout = 8000
OutputStreamWriter(conn.outputStream, Charsets.UTF_8).use { it.write(payload.toString()) }
val code = conn.responseCode
conn.disconnect()
Log.d(TAG, "ghPost $url → HTTP $code")
code
} catch (e: Exception) { Log.w(TAG, "ghPost failed: ${e.message}"); -1 }
}
@@ -1,151 +0,0 @@
package it.dadaloop.evershelf.scalegate
import android.util.Log
import org.java_websocket.WebSocket
import org.java_websocket.handshake.ClientHandshake
import org.java_websocket.server.WebSocketServer
import org.json.JSONObject
import java.net.InetSocketAddress
import java.util.Collections
private const val TAG = "GatewayWsServer"
/**
* Callbacks for the WebSocket server, dispatched on the server's internal thread.
* The caller (MainActivity) is responsible for switching to the main thread if needed.
*/
interface ServerEventListener {
fun onClientConnected(address: String)
fun onClientDisconnected(address: String)
fun onClientRequestedWeight()
}
/**
* WebSocket server that exposes smart-scale data to EverShelf running in a browser.
*
* Message protocol (JSON):
*
* Server -> Client:
* {"type":"status","state":"connected"|"disconnected","device":"QN-KS","battery":80}
* {"type":"weight","value":17.0,"unit":"g","stable":true,"timestamp":1712345678000}
* {"type":"pong"}
*
* Client → Server:
* {"type":"get_status"} → server responds with current status message
* {"type":"get_weight"} → server will push the next stable weight reading
* {"type":"ping"} → server responds with {"type":"pong"}
*/
class GatewayWebSocketServer(
port: Int,
private val eventListener: ServerEventListener?,
) : WebSocketServer(InetSocketAddress(port)) {
// Thread-safe set of clients waiting for the next stable weight reading
private val pendingWeightRequests: MutableSet<WebSocket> =
Collections.synchronizedSet(mutableSetOf())
// Last known scale state (to send to new clients immediately)
@Volatile private var lastStatusJson: String = buildStatusJson("disconnected", null, null)
@Volatile private var lastWeightJson: String? = null
// ─── Server lifecycle ──────────────────────────────────────────────────────
override fun onStart() {
Log.i(TAG, "WebSocket server started on port ${address.port}")
connectionLostTimeout = 30
}
override fun onOpen(conn: WebSocket, handshake: ClientHandshake) {
val addr = conn.remoteSocketAddress?.toString() ?: "?"
Log.d(TAG, "Client connected: $addr")
// Immediately send current status so the web app knows the scale state
conn.send(lastStatusJson)
lastWeightJson?.let { conn.send(it) }
eventListener?.onClientConnected(addr)
}
override fun onClose(conn: WebSocket, code: Int, reason: String, remote: Boolean) {
val addr = conn.remoteSocketAddress?.toString() ?: "?"
Log.d(TAG, "Client disconnected: $addr (code=$code)")
pendingWeightRequests.remove(conn)
eventListener?.onClientDisconnected(addr)
}
override fun onMessage(conn: WebSocket, message: String) {
try {
val json = JSONObject(message)
when (json.optString("type")) {
"ping" -> conn.send("""{"type":"pong"}""")
"get_status" -> conn.send(lastStatusJson)
"get_weight" -> {
// Add to pending set; next stable weight will be sent to this client
pendingWeightRequests.add(conn)
eventListener?.onClientRequestedWeight()
// If we already have a recent weight, send it immediately
lastWeightJson?.let { conn.send(it) }
}
}
} catch (e: Exception) {
Log.w(TAG, "Malformed message: $message")
}
}
override fun onError(conn: WebSocket?, ex: Exception) {
Log.e(TAG, "WebSocket error on ${conn?.remoteSocketAddress}", ex)
ErrorReporter.report(ex, "GatewayWebSocketServer.onError",
mapOf("remote_addr" to (conn?.remoteSocketAddress?.toString() ?: "null")))
}
// ─── Publishing API ────────────────────────────────────────────────────────
/**
* Broadcast scale connection status to all connected WebSocket clients.
*/
fun publishStatus(state: String, deviceName: String?, battery: Int?) {
lastStatusJson = buildStatusJson(state, deviceName, battery)
broadcast(lastStatusJson)
}
/**
* Broadcast a weight reading to all clients.
* If [stable] is true, also fulfil pending on-demand weight requests.
*/
fun publishWeight(value: Float, unit: String, stable: Boolean, battery: Int? = null) {
val json = buildWeightJson(value, unit, stable)
lastWeightJson = json
broadcast(json)
if (stable) {
synchronized(pendingWeightRequests) {
// Clients that requested on-demand readings are already served by broadcast;
// just clear the pending set.
pendingWeightRequests.clear()
}
}
}
// ─── JSON builders ─────────────────────────────────────────────────────────
private fun buildStatusJson(state: String, device: String?, battery: Int?): String {
val obj = JSONObject()
obj.put("type", "status")
obj.put("state", state)
if (device != null) obj.put("device", device)
if (battery != null) obj.put("battery", battery)
return obj.toString()
}
private fun buildWeightJson(value: Float, unit: String, stable: Boolean): String {
val obj = JSONObject()
obj.put("type", "weight")
// Round to 1 decimal to avoid floating point noise (e.g. 17.000001)
val rounded = Math.round(value * 10f) / 10.0
obj.put("value", rounded)
obj.put("unit", unit)
obj.put("stable", stable)
obj.put("timestamp", System.currentTimeMillis())
return obj.toString()
}
}
@@ -1,674 +0,0 @@
package it.dadaloop.evershelf.scalegate
import android.Manifest
import android.app.DownloadManager
import android.bluetooth.BluetoothAdapter
import android.bluetooth.BluetoothDevice
import android.content.BroadcastReceiver
import android.content.Context
import android.content.Intent
import android.content.IntentFilter
import android.app.PendingIntent
import android.content.pm.PackageInstaller
import android.content.pm.PackageManager
import android.net.Uri
import android.os.Build
import android.os.Bundle
import android.provider.Settings
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.LinearLayout
import android.widget.TextView
import android.widget.Toast
import androidx.activity.result.contract.ActivityResultContracts
import androidx.appcompat.app.AlertDialog
import androidx.appcompat.app.AppCompatActivity
import androidx.core.content.ContextCompat
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.google.android.material.button.MaterialButton
import it.dadaloop.evershelf.scalegate.databinding.ActivityMainBinding
import java.net.Inet4Address
import java.net.NetworkInterface
import java.text.SimpleDateFormat
import java.util.Date
import java.util.Locale
import org.json.JSONObject
private const val WS_PORT = 8765
class MainActivity : AppCompatActivity(), BleScaleListener, ServerEventListener {
private lateinit var binding: ActivityMainBinding
private lateinit var bleManager: BleScaleManager
private var wsServer: GatewayWebSocketServer? = null
private val devices = mutableListOf<BleDeviceInfo>()
private lateinit var deviceAdapter: DeviceAdapter
private var batteryLevel: Int? = null
private val debugLines = mutableListOf<String>()
private var debugVisible = false
private var lastDebugUpdate = 0L
private val debugTimeFmt = SimpleDateFormat("HH:mm:ss.SSS", Locale.getDefault())
private var isAutoReconnecting = false
// Update banner
private var pendingApkDownloadUrl = ""
private var pendingInstallFile: java.io.File? = null
private companion object {
const val MAX_DEBUG_LINES = 150
const val DEBUG_THROTTLE_MS = 200L
const val GITHUB_RELEASES_API = "https://api.github.com/repos/dadaloop82/EverShelf/releases/latest"
const val APK_DOWNLOAD_URL = "https://github.com/dadaloop82/EverShelf/releases/latest/download/evershelf-scale-gateway.apk"
}
// ─── Permission launcher ───────────────────────────────────────────────────
private val permissionLauncher = registerForActivityResult(
ActivityResultContracts.RequestMultiplePermissions()
) { granted ->
if (granted.values.all { it }) {
startGatewayServer()
} else {
showDialog("Missing permissions",
"The app requires Bluetooth and Location permissions to function.")
}
}
private val enableBtLauncher = registerForActivityResult(
ActivityResultContracts.StartActivityForResult()
) { result ->
if (result.resultCode == RESULT_OK) checkPermissionsAndStart()
else showDialog("Bluetooth required", "Please enable Bluetooth to use the gateway.")
}
/** Returns from ACTION_MANAGE_UNKNOWN_APP_SOURCES — retry the download. */
private val installPermLauncher = registerForActivityResult(
ActivityResultContracts.StartActivityForResult()
) { _ ->
val url = pendingApkDownloadUrl
if (url.isNotEmpty()) triggerApkDownload(url)
}
/** Returns from system installer dialog — if not OK the install failed (signature conflict?). */
private val installConfirmLauncher = registerForActivityResult(
ActivityResultContracts.StartActivityForResult()
) { result ->
if (result.resultCode != RESULT_OK) {
val f = pendingInstallFile
if (f != null && f.exists()) {
runOnUiThread {
AlertDialog.Builder(this)
.setTitle("⚠️ Installazione non riuscita")
.setMessage("Se hai visto un errore di conflitto firma, devi disinstallare la versione precedente.\n\nDisinstalla ora? L'installazione ripartirà automaticamente.")
.setPositiveButton("Disinstalla") { _, _ ->
uninstallLauncher.launch(
Intent(Intent.ACTION_DELETE, android.net.Uri.parse("package:$packageName"))
)
}
.setNegativeButton("Annulla", null)
.show()
}
}
}
}
/** Returns from uninstall screen — auto-retry the install with the saved APK file. */
private val uninstallLauncher = registerForActivityResult(
ActivityResultContracts.StartActivityForResult()
) { _ ->
val f = pendingInstallFile
if (f != null && f.exists()) installApk(f)
}
// ─── Lifecycle ─────────────────────────────────────────────────────────────
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = ActivityMainBinding.inflate(layoutInflater)
setContentView(binding.root)
bleManager = BleScaleManager(this, this)
// Initialise error reporter early so the UncaughtExceptionHandler is installed
// and any pending crash from a previous session is sent
ErrorReporter.init(this)
deviceAdapter = DeviceAdapter(devices) { info ->
bleManager.connect(info.device)
}
binding.rvDevices.apply {
layoutManager = LinearLayoutManager(this@MainActivity)
adapter = deviceAdapter
}
binding.btnScan.setOnClickListener { startScanIfPermitted() }
binding.btnDisconnect.setOnClickListener {
bleManager.disconnect()
updateUiDisconnected()
}
binding.btnDebug.setOnClickListener {
debugVisible = !debugVisible
binding.svDebugLog.visibility = if (debugVisible) View.VISIBLE else View.GONE
binding.btnCopyLog.visibility = if (debugVisible) View.VISIBLE else View.GONE
binding.btnShareLog.visibility = if (debugVisible) View.VISIBLE else View.GONE
binding.btnDebug.text = if (debugVisible) "\uD83D\uDC1B Hide Debug" else "\uD83D\uDC1B Debug"
}
binding.btnCopyLog.setOnClickListener {
val log = debugLines.joinToString("\n")
val cm = getSystemService(CLIPBOARD_SERVICE) as android.content.ClipboardManager
cm.setPrimaryClip(android.content.ClipData.newPlainText("EverShelf Scale Log", log))
Toast.makeText(this, "Log copied to clipboard", Toast.LENGTH_SHORT).show()
}
binding.btnShareLog.setOnClickListener {
val log = debugLines.joinToString("\n")
val intent = Intent(Intent.ACTION_SEND).apply {
type = "text/plain"
putExtra(Intent.EXTRA_SUBJECT, "EverShelf Scale Gateway - Debug Log")
putExtra(Intent.EXTRA_TEXT, log)
}
startActivity(Intent.createChooser(intent, "Share log"))
}
// Show app version
try {
val pInfo = packageManager.getPackageInfo(packageName, 0)
binding.tvVersion.text = "v${pInfo.versionName} (${pInfo.longVersionCode})"
} catch (_: Exception) { }
updateGatewayUrl()
checkPermissionsAndStart()
// Wire update banner buttons
binding.btnDismissUpdate.setOnClickListener { binding.updateBanner.visibility = View.GONE }
binding.btnInstallUpdate.setOnClickListener { triggerApkDownload(pendingApkDownloadUrl) }
// Check for a newer release (background thread, at most once every 6 h)
checkForUpdates()
// Auto-connect: if we have a saved device, start scanning with auto-connect enabled
if (bleManager.getSavedDeviceAddress() != null) {
binding.tvScanHint.visibility = View.VISIBLE
binding.tvScanHint.text = "\uD83D\uDD04 Reconnecting to saved scale\u2026"
}
}
override fun onDestroy() {
super.onDestroy()
bleManager.disconnect()
wsServer?.stop(1000)
}
// ─── Permissions & startup ─────────────────────────────────────────────────
private fun checkPermissionsAndStart() {
val required = buildList {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
add(Manifest.permission.BLUETOOTH_SCAN)
add(Manifest.permission.BLUETOOTH_CONNECT)
} else {
add(Manifest.permission.ACCESS_FINE_LOCATION)
}
}
val missing = required.filter {
ContextCompat.checkSelfPermission(this, it) != PackageManager.PERMISSION_GRANTED
}
when {
missing.isNotEmpty() -> permissionLauncher.launch(missing.toTypedArray())
!isBluetoothEnabled() -> enableBtLauncher.launch(Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE))
else -> startGatewayServer()
}
}
private fun isBluetoothEnabled(): Boolean {
val adapter = android.bluetooth.BluetoothManager::class.java.let {
getSystemService(it)
} as? android.bluetooth.BluetoothManager
return adapter?.adapter?.isEnabled == true
}
private fun startScanIfPermitted() {
if (!bleManager.hasRequiredPermissions()) {
checkPermissionsAndStart()
return
}
devices.clear()
deviceAdapter.notifyDataSetChanged()
debugLines.clear()
binding.tvDebugLog.text = ""
binding.tvScanHint.visibility = View.VISIBLE
binding.tvScanHint.text = "Scanning for BLE scales\u2026"
binding.btnScan.isEnabled = false
bleManager.enableAutoConnect()
isAutoReconnecting = false // manual scan — stop any pending auto-reconnect cycle
bleManager.startScan()
}
// ─── WebSocket gateway ─────────────────────────────────────────────────────
private fun startGatewayServer() {
if (wsServer != null) return
try {
wsServer = GatewayWebSocketServer(WS_PORT, this)
wsServer!!.start()
updateGatewayUrl()
binding.tvGatewayStatus.text = "\u2705 Gateway active on port $WS_PORT"
} catch (e: Exception) {
binding.tvGatewayStatus.text = "\u274C Failed to start gateway: ${e.message}"
ErrorReporter.report(e, "startGatewayServer", mapOf("port" to WS_PORT))
}
// Auto-scan if there's a saved device
if (bleManager.getSavedDeviceAddress() != null && bleManager.hasRequiredPermissions()) {
bleManager.enableAutoConnect()
bleManager.startScan()
}
}
private fun updateGatewayUrl() {
val ip = getLocalIpAddress() ?: ""
val url = "ws://$ip:$WS_PORT"
binding.tvGatewayUrl.text = url
binding.tvGatewayUrlHint.text = "Paste this URL in EverShelf \u2192 Settings \u2192 Smart Scale"
binding.btnCopyUrl.setOnClickListener {
val cm = getSystemService(CLIPBOARD_SERVICE) as android.content.ClipboardManager
cm.setPrimaryClip(android.content.ClipData.newPlainText("EverShelf Gateway URL", url))
binding.btnCopyUrl.text = "\u2705 Copied!"
binding.btnCopyUrl.postDelayed({ binding.btnCopyUrl.text = "\uD83D\uDCCB Copy URL" }, 2000)
}
}
// ─── BleScaleListener ─────────────────────────────────────────────────────
override fun onDeviceFound(info: BleDeviceInfo) {
if (devices.none { it.device.address == info.device.address }) {
// Insert keeping descending scaleScore order (scale-likely devices first)
val insertAt = devices.indexOfFirst { it.scaleScore < info.scaleScore }
.let { if (it < 0) devices.size else it }
devices.add(insertAt, info)
deviceAdapter.notifyItemInserted(insertAt)
}
}
override fun onConnecting(device: BluetoothDevice) {
val name = try { device.name ?: device.address } catch (e: SecurityException) { device.address }
binding.tvScaleStatus.text = "\u23f3 Connecting to $name\u2026"
binding.tvWeight.text = "— — —"
binding.cardConnection.setCardBackgroundColor(getColor(android.R.color.holo_orange_light))
}
override fun onConnected(deviceName: String) {
isAutoReconnecting = false
binding.tvScaleStatus.text = "\u2705 Connected: $deviceName"
binding.tvWeight.text = "Waiting for weight\u2026"
binding.cardConnection.setCardBackgroundColor(getColor(android.R.color.holo_green_light))
binding.btnDisconnect.visibility = View.VISIBLE
binding.rvDevices.visibility = View.GONE
binding.btnScan.visibility = View.GONE
binding.tvScanHint.visibility = View.GONE
wsServer?.publishStatus("connected", deviceName, batteryLevel)
}
override fun onDisconnected() {
wsServer?.publishStatus("disconnected", null, null)
updateUiDisconnected()
// Auto-reconnect: if a saved device exists, restart scan after a short delay.
// This handles the scale turning off by itself (auto-off) — when it powers
// back on it will start advertising again and we will pick it up.
if (bleManager.getSavedDeviceAddress() != null && bleManager.hasRequiredPermissions()) {
isAutoReconnecting = true
binding.tvScanHint.visibility = View.VISIBLE
binding.tvScanHint.text = "\uD83D\uDD04 Reconnecting to saved scale in 5 s\u2026"
binding.root.postDelayed({
if (!bleManager.isConnected && isAutoReconnecting) {
bleManager.enableAutoConnect()
bleManager.startScan()
}
}, 5_000L)
}
}
override fun onWeightReceived(reading: WeightReading) {
val displayValue = if (reading.value % 1f == 0f) reading.value.toInt().toString()
else "%.1f".format(reading.value)
binding.tvWeight.text = "$displayValue ${reading.unit}"
if (reading.stable) {
binding.tvWeightHint.text = "\u2713 Stable reading"
} else {
binding.tvWeightHint.text = "\u23f3 Measuring\u2026"
}
wsServer?.publishWeight(reading.value, reading.unit, reading.stable, batteryLevel)
}
override fun onBatteryReceived(level: Int) {
batteryLevel = level
binding.tvBattery.text = "🔋 $level%"
binding.tvBattery.visibility = View.VISIBLE
wsServer?.publishStatus("connected", binding.tvScaleStatus.text.toString()
.removePrefix("\u2705 Connected: "), level)
}
override fun onError(message: String) {
binding.tvScaleStatus.text = "$message"
binding.cardConnection.setCardBackgroundColor(getColor(android.R.color.holo_red_light))
ErrorReporter.reportMessage(
type = "ble-error",
message = message,
extra = mapOf("connected_device" to (bleManager.getSavedDeviceAddress() ?: "none"))
)
}
override fun onScanStopped() {
binding.btnScan.isEnabled = true
if (isAutoReconnecting && !bleManager.isConnected && bleManager.getSavedDeviceAddress() != null) {
// Scale not found yet — retry scan after 10 s indefinitely until reconnected
binding.tvScanHint.visibility = View.VISIBLE
binding.tvScanHint.text = "\uD83D\uDD04 Bilancia non trovata, riprovo tra 10 s\u2026"
binding.root.postDelayed({
if (!bleManager.isConnected && isAutoReconnecting) {
binding.tvScanHint.text = "\uD83D\uDD04 Cerco la bilancia\u2026"
bleManager.enableAutoConnect()
bleManager.startScan()
}
}, 10_000L)
} else if (devices.isEmpty()) {
binding.tvScanHint.text = "No scale found. Make sure it's on, then scan again."
} else {
binding.tvScanHint.text = "Tap a scale to connect."
}
}
override fun onDebugEvent(message: String) {
runOnUiThread {
val ts = debugTimeFmt.format(Date())
debugLines.add("[$ts] $message")
// Keep only last MAX_DEBUG_LINES
while (debugLines.size > MAX_DEBUG_LINES) debugLines.removeAt(0)
// Throttle UI updates to avoid freezing
val now = System.currentTimeMillis()
if (now - lastDebugUpdate >= DEBUG_THROTTLE_MS) {
lastDebugUpdate = now
binding.tvDebugLog.text = debugLines.joinToString("\n")
if (debugVisible) {
binding.svDebugLog.post { binding.svDebugLog.fullScroll(View.FOCUS_DOWN) }
}
}
}
}
// ─── ServerEventListener ──────────────────────────────────────────────────
override fun onClientConnected(address: String) {
runOnUiThread {
binding.tvClientCount.text = "\uD83C\uDF10 Client connected: $address"
binding.tvClientCount.visibility = View.VISIBLE
}
}
override fun onClientDisconnected(address: String) {
runOnUiThread {
binding.tvClientCount.visibility = View.GONE
}
}
override fun onClientRequestedWeight() { /* Nothing extra needed */ }
// ─── UI helpers ───────────────────────────────────────────────────────────
private fun updateUiDisconnected() {
binding.tvScaleStatus.text = "\u26a1 Ready \u2014 scan for a scale"
binding.tvWeight.text = "— — —"
binding.tvWeightHint.text = ""
binding.tvBattery.visibility = View.GONE
binding.cardConnection.setCardBackgroundColor(getColor(android.R.color.darker_gray))
binding.btnDisconnect.visibility = View.GONE
binding.rvDevices.visibility = View.VISIBLE
binding.btnScan.visibility = View.VISIBLE
}
private fun getLocalIpAddress(): String? {
return try {
NetworkInterface.getNetworkInterfaces().toList()
.flatMap { it.inetAddresses.toList() }
.filterIsInstance<Inet4Address>()
.firstOrNull { !it.isLoopbackAddress }
?.hostAddress
} catch (e: Exception) { null }
}
private fun showDialog(title: String, message: String) {
AlertDialog.Builder(this)
.setTitle(title)
.setMessage(message)
.setPositiveButton("OK", null)
.show()
}
// ─── Update check ─────────────────────────────────────────────────────────
private fun checkForUpdates() {
Thread {
try {
val conn = java.net.URL(GITHUB_RELEASES_API).openConnection() as java.net.HttpURLConnection
conn.setRequestProperty("Accept", "application/vnd.github+json")
conn.connectTimeout = 5000
conn.readTimeout = 5000
val body = conn.inputStream.bufferedReader().readText()
conn.disconnect()
val json = JSONObject(body)
val latestTag = json.optString("tag_name", "").ifEmpty { return@Thread }
val current = try { packageManager.getPackageInfo(packageName, 0).versionName ?: "" } catch (_: Exception) { "" }
val norm = { v: String -> v.trimStart('v') }
val isSemver = latestTag.trimStart('v').matches(Regex("\\d+\\.\\d+.*"))
// Find scale-gateway APK in release assets
var apkUrl = ""
val assets = json.optJSONArray("assets")
if (assets != null) {
for (i in 0 until assets.length()) {
val a = assets.getJSONObject(i)
val name = a.optString("name", "").lowercase()
val url = a.optString("browser_download_url", "")
if ((name.contains("gateway") || name.contains("scale")) && url.isNotEmpty()) {
apkUrl = url; break
}
}
}
// Only show banner if the release actually contains our APK
if (apkUrl.isEmpty()) return@Thread
// Proper semver comparison: only update if remote is strictly newer
fun semverNewer(remote: String, local: String): Boolean {
val r = remote.split(".").map { it.filter(Char::isDigit).toIntOrNull() ?: 0 }
val l = local.split(".").map { it.filter(Char::isDigit).toIntOrNull() ?: 0 }
val len = maxOf(r.size, l.size)
for (i in 0 until len) {
val rv = r.getOrElse(i) { 0 }
val lv = l.getOrElse(i) { 0 }
if (rv != lv) return rv > lv
}
return false
}
if (current.isEmpty()) return@Thread
if (isSemver && !semverNewer(norm(latestTag), norm(current))) return@Thread
val label = if (isSemver) "$current$latestTag" else latestTag
val msg = "⬆️ Scale Gateway $label"
runOnUiThread { showNativeUpdateBanner(msg, apkUrl) }
} catch (_: Exception) {}
}.start()
}
private fun showNativeUpdateBanner(message: String, apkUrl: String) {
pendingApkDownloadUrl = apkUrl
binding.tvUpdateMessage.text = message
binding.updateBanner.visibility = View.VISIBLE
binding.updateBanner.postDelayed({ binding.updateBanner.visibility = View.GONE }, 30_000)
}
private fun triggerApkDownload(apkUrl: String) {
if (apkUrl.isEmpty()) return
try {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O &&
!packageManager.canRequestPackageInstalls()) {
pendingApkDownloadUrl = apkUrl // remember for retry
installPermLauncher.launch(
Intent(Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES, Uri.parse("package:$packageName"))
)
Toast.makeText(this, "Abilita 'Installa app sconosciute', poi torna qui", Toast.LENGTH_LONG).show()
return
}
// Download to app-private external dir — no storage permission needed
val destDir = getExternalFilesDir(null) ?: filesDir
val destFile = java.io.File(destDir, "evershelf-scale-update.apk")
pendingInstallFile = destFile
val dm = getSystemService(DOWNLOAD_SERVICE) as DownloadManager
val req = DownloadManager.Request(Uri.parse(apkUrl)).apply {
setTitle("EverShelf Scale Gateway — Aggiornamento")
setDescription("Scaricamento aggiornamento…")
setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED)
setDestinationUri(Uri.fromFile(destFile))
setMimeType("application/vnd.android.package-archive")
}
val downloadId = dm.enqueue(req)
Toast.makeText(this, "Download avviato…", Toast.LENGTH_SHORT).show()
val receiver = object : BroadcastReceiver() {
override fun onReceive(ctx: Context?, intent: Intent?) {
val id = intent?.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1)
if (id != downloadId) return
unregisterReceiver(this)
val q = DownloadManager.Query().setFilterById(downloadId)
val c = (getSystemService(DOWNLOAD_SERVICE) as DownloadManager).query(q)
var ok = false
if (c.moveToFirst()) {
val status = c.getInt(c.getColumnIndexOrThrow(DownloadManager.COLUMN_STATUS))
ok = (status == DownloadManager.STATUS_SUCCESSFUL)
}
c.close()
if (ok) installApk(destFile)
else runOnUiThread {
Toast.makeText(this@MainActivity, "Download fallito, riprova", Toast.LENGTH_LONG).show()
}
}
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
// RECEIVER_EXPORTED required: ACTION_DOWNLOAD_COMPLETE is sent by the system DownloadManager
// (an external process), so NOT_EXPORTED would silently block the broadcast on API 33+.
registerReceiver(receiver, IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE), RECEIVER_EXPORTED)
} else {
@Suppress("UnspecifiedRegisterReceiverFlag")
registerReceiver(receiver, IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE))
}
} catch (e: Exception) {
Toast.makeText(this, "Errore download: ${e.message}", Toast.LENGTH_LONG).show()
}
}
private fun installApk(file: java.io.File) {
if (!file.exists() || file.length() == 0L) {
runOnUiThread { Toast.makeText(this, "File APK non trovato", Toast.LENGTH_LONG).show() }
return
}
try {
val pi = packageManager.packageInstaller
val params = PackageInstaller.SessionParams(PackageInstaller.SessionParams.MODE_FULL_INSTALL)
params.setAppPackageName(packageName)
val sessionId = pi.createSession(params)
pi.openSession(sessionId).use { session ->
file.inputStream().use { input ->
session.openWrite("package", 0, file.length()).use { out ->
input.copyTo(out)
session.fsync(out)
}
}
val action = "it.dadaloop.evershelf.scalegate.INSTALL_RESULT_$sessionId"
val resultReceiver = object : BroadcastReceiver() {
override fun onReceive(ctx: Context?, intent: Intent?) {
unregisterReceiver(this)
val status = intent?.getIntExtra(
PackageInstaller.EXTRA_STATUS,
PackageInstaller.STATUS_FAILURE
) ?: PackageInstaller.STATUS_FAILURE
when (status) {
PackageInstaller.STATUS_PENDING_USER_ACTION -> {
// Use launcher so we get notified if system installer fails
@Suppress("DEPRECATION")
val confirmIntent = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU)
intent?.getParcelableExtra(Intent.EXTRA_INTENT, Intent::class.java)
else intent?.getParcelableExtra(Intent.EXTRA_INTENT)
if (confirmIntent != null) installConfirmLauncher.launch(confirmIntent)
}
PackageInstaller.STATUS_SUCCESS ->
runOnUiThread { Toast.makeText(this@MainActivity, "✅ Aggiornamento installato", Toast.LENGTH_SHORT).show() }
PackageInstaller.STATUS_FAILURE_INCOMPATIBLE,
PackageInstaller.STATUS_FAILURE_CONFLICT -> {
runOnUiThread {
AlertDialog.Builder(this@MainActivity)
.setTitle("⚠️ Conflitto firma APK")
.setMessage("L'app installata usa una firma diversa.\n\nDisinstalla la versione precedente: al termine l'installazione riparte automaticamente.")
.setPositiveButton("Disinstalla") { _, _ ->
uninstallLauncher.launch(
Intent(Intent.ACTION_DELETE, android.net.Uri.parse("package:$packageName"))
)
}
.setNegativeButton("Annulla", null)
.show()
}
}
else -> {
val msg = intent?.getStringExtra(PackageInstaller.EXTRA_STATUS_MESSAGE)
?: "status=$status"
runOnUiThread { Toast.makeText(this@MainActivity, "Installazione: $msg", Toast.LENGTH_LONG).show() }
}
}
}
}
val flags = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU)
RECEIVER_NOT_EXPORTED else 0
registerReceiver(resultReceiver, IntentFilter(action), flags)
val pi2 = PendingIntent.getBroadcast(
this, sessionId,
Intent(action).setPackage(packageName),
PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
)
session.commit(pi2.intentSender)
}
Toast.makeText(this, "Installazione in corso…", Toast.LENGTH_SHORT).show()
} catch (e: Exception) {
runOnUiThread { Toast.makeText(this, "Errore installazione: ${e.message}", Toast.LENGTH_LONG).show() }
}
}
// ─── RecyclerView adapter ──────────────────────────────────────────────────
inner class DeviceAdapter(
private val items: List<BleDeviceInfo>,
private val onClick: (BleDeviceInfo) -> Unit,
) : RecyclerView.Adapter<DeviceAdapter.VH>() {
inner class VH(view: View) : RecyclerView.ViewHolder(view) {
val tvName: TextView = view.findViewById(R.id.tv_device_name)
val tvAddr: TextView = view.findViewById(R.id.tv_device_addr)
val tvRssi: TextView = view.findViewById(R.id.tv_device_rssi)
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): VH {
val view = LayoutInflater.from(parent.context)
.inflate(R.layout.item_device, parent, false)
return VH(view)
}
override fun onBindViewHolder(holder: VH, position: Int) {
val info = items[position]
holder.tvName.text = info.name
holder.tvAddr.text = info.device.address
holder.tvRssi.text = info.proximity
holder.itemView.setOnClickListener { onClick(info) }
}
override fun getItemCount() = items.size
}
}
@@ -1,208 +0,0 @@
package it.dadaloop.evershelf.scalegate
import android.bluetooth.BluetoothGattCharacteristic
import java.util.UUID
// --- Data model ---
/**
* A single weight reading from a BLE scale.
* [value] is in the scale's current display unit (grams, oz, ml, lb).
* [unit] is "g", "oz", "ml", or "lb".
*/
data class WeightReading(
val value: Float,
val unit: String,
val stable: Boolean,
)
// --- UUIDs ---
val CCCD_UUID: UUID = UUID.fromString("00002902-0000-1000-8000-00805f9b34fb")
object BleUuids {
// BLE SIG Weight Scale (some kitchen scales use this)
val WEIGHT_SCALE_SERVICE = UUID.fromString("0000181d-0000-1000-8000-00805f9b34fb")
val WEIGHT_MEASUREMENT_CHAR = UUID.fromString("00002a9d-0000-1000-8000-00805f9b34fb")
// Battery
val BATTERY_SERVICE = UUID.fromString("0000180f-0000-1000-8000-00805f9b34fb")
val BATTERY_LEVEL_CHAR = UUID.fromString("00002a19-0000-1000-8000-00805f9b34fb")
// Common vendor services used by kitchen scales
val FFE0 = UUID.fromString("0000ffe0-0000-1000-8000-00805f9b34fb")
val FFE1 = UUID.fromString("0000ffe1-0000-1000-8000-00805f9b34fb")
val FFF0 = UUID.fromString("0000fff0-0000-1000-8000-00805f9b34fb")
val FFF1 = UUID.fromString("0000fff1-0000-1000-8000-00805f9b34fb")
val FFF4 = UUID.fromString("0000fff4-0000-1000-8000-00805f9b34fb")
// Acaia / Brewista coffee scales
val ACAIA_SERVICE = UUID.fromString("49535343-fe7d-4ae5-8fa9-9fafd205e455")
val ACAIA_CHAR = UUID.fromString("49535343-8841-43f4-a8d4-ecbe34729bb3")
// QN/Yolanda food scale secondary service (QN-KS, etc.)
val QN_AE00 = UUID.fromString("0000ae00-0000-1000-8000-00805f9b34fb")
val QN_AE02 = UUID.fromString("0000ae02-0000-1000-8000-00805f9b34fb")
}
// --- Food scale protocol parser ---
object ScaleProtocol {
// Plausible kitchen scale range
private const val MAX_GRAMS = 15000f
private const val MIN_GRAMS = 0.5f // allow tare/small values
fun resetState() { /* reserved for future use */ }
fun parse(
char: BluetoothGattCharacteristic,
data: ByteArray,
debug: ((String) -> Unit)? = null,
): WeightReading? {
if (data.size < 2) {
debug?.invoke("skip: packet too short (" + data.size + "B)")
return null
}
// UUID-specific parsers
when (char.uuid) {
BleUuids.WEIGHT_MEASUREMENT_CHAR -> return parseSigWeight(data, debug)
}
// QN/Yolanda food scale (QN-KS, BC-KS, etc.):
// 18-byte frame starting with 0x10 0x12 on FFF1
if (data.size == 18
&& (data[0].toInt() and 0xFF) == 0x10
&& (data[1].toInt() and 0xFF) == 0x12) {
return parseQNFood(data, debug)
}
return parseGeneric(data, debug)
}
// -------------------------------------------------------------------------
// BLE SIG 0x2A9D Weight Measurement
// -------------------------------------------------------------------------
private fun parseSigWeight(data: ByteArray, debug: ((String) -> Unit)? = null): WeightReading? {
if (data.size < 3) return null
val flags = data[0].toInt() and 0xFF
val isImperial = (flags and 0x01) != 0
val raw = u16le(data, 1)
return if (isImperial) {
val lb = raw * 0.01f
debug?.invoke("SIG 2A9D: raw=$raw -> ${lb}lb")
if (lb < 0.01f || lb > 33f) null
else WeightReading(lb, "lb", stable = true)
} else {
val g = raw * 5f // 0.005 kg resolution = 5 g/unit
debug?.invoke("SIG 2A9D: raw=$raw -> ${g}g")
if (g < MIN_GRAMS || g > MAX_GRAMS) null
else WeightReading(g, "g", stable = true)
}
}
// -------------------------------------------------------------------------
// QN / Yolanda food scale (QN-KS, BC-KS, YolandaKS, ...)
//
// 18-byte notification on service 0xFFF0, char 0xFFF1:
// [0x10][0x12][00][??][unit][02][05][01][flags][w_hi][w_lo][7E][1F][02][58][02][01][crc]
// index: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
//
// weight = u16BE(data, 9) / 10.0 (0.1-unit resolution)
// unit = byte[4]: 0x01=g, 0x02=oz, 0x03=ml(water), 0x04=ml(milk)
// stable = bit3 of byte[8] != 0 (0xF8=stable, 0xF0=settling)
// crc = sum(bytes[0..16]) mod 256
// -------------------------------------------------------------------------
private fun parseQNFood(data: ByteArray, debug: ((String) -> Unit)? = null): WeightReading? {
// Verify checksum
val calc = data.take(17).sumOf { it.toInt() and 0xFF } and 0xFF
if (calc != (data[17].toInt() and 0xFF)) {
debug?.invoke("QN-KS: CRC mismatch (calc=0x%02X got=0x%02X)".format(calc, data[17].toInt() and 0xFF))
return null
}
val rawValue = u16be(data, 9)
val stable = (data[8].toInt() and 0x08) != 0
val unit = when (data[4].toInt() and 0xFF) {
0x01 -> "g"
0x02 -> "oz"
0x03 -> "ml" // water mode
0x04 -> "ml" // milk mode
else -> "g"
}
// Resolution is 0.1 unit (e.g. 170 raw = 17.0 g, 195 raw = 19.5 g)
val value = rawValue / 10f
debug?.invoke("QN-KS: ${value}${unit} stable=$stable (raw=$rawValue unit_byte=0x%02X)".format(data[4].toInt() and 0xFF))
if (rawValue == 0) return null
// Convert to grams for range check
val valueG = if (unit == "oz") value * 28.3495f else value
if (valueG < MIN_GRAMS || valueG > MAX_GRAMS) return null
return WeightReading(value, unit, stable)
}
// -------------------------------------------------------------------------
// Generic fallback parser
// Tries common frame layouts used by many BLE kitchen scales.
// -------------------------------------------------------------------------
private fun parseGeneric(data: ByteArray, debug: ((String) -> Unit)? = null): WeightReading? {
if (data.size < 3) {
debug?.invoke("generic: skip short packet (" + data.size + "B)")
return null
}
data class C(val pos: Int, val be: Boolean, val div: Float, val label: String)
val candidates = listOf(
// Direct grams (1g resolution)
C(1, false, 1f, "pos1 LE g"),
C(1, true, 1f, "pos1 BE g"),
C(2, false, 1f, "pos2 LE g"),
C(2, true, 1f, "pos2 BE g"),
C(3, false, 1f, "pos3 LE g"),
C(3, true, 1f, "pos3 BE g"),
// 0.1g resolution (high-precision scales)
C(1, false, 10f, "pos1 LE 0.1g"),
C(1, true, 10f, "pos1 BE 0.1g"),
C(2, false, 10f, "pos2 LE 0.1g"),
C(2, true, 10f, "pos2 BE 0.1g"),
C(3, false, 10f, "pos3 LE 0.1g"),
C(3, true, 10f, "pos3 BE 0.1g"),
// 0.5g resolution
C(1, false, 2f, "pos1 LE 0.5g"),
C(1, true, 2f, "pos1 BE 0.5g"),
// Raw = centgrams (raw*10 = g)
C(1, false, 0.1f, "pos1 LE cg"),
C(1, true, 0.1f, "pos1 BE cg"),
C(3, false, 0.1f, "pos3 LE cg"),
C(3, true, 0.1f, "pos3 BE cg"),
)
for (c in candidates) {
if (c.pos + 1 >= data.size) continue
val raw = if (c.be) u16be(data, c.pos) else u16le(data, c.pos)
if (raw == 0) continue
val g = raw / c.div
if (g in MIN_GRAMS..MAX_GRAMS) {
debug?.invoke("generic [${c.label}]: raw=$raw -> ${g}g (unstable)")
return WeightReading(g, "g", stable = false)
}
}
debug?.invoke("generic: no valid candidate in " + data.size + " bytes")
return null
}
// -------------------------------------------------------------------------
// Helpers
// -------------------------------------------------------------------------
private fun u16le(b: ByteArray, off: Int): Int =
(b[off].toInt() and 0xFF) or ((b[off + 1].toInt() and 0xFF) shl 8)
private fun u16be(b: ByteArray, off: Int): Int =
((b[off].toInt() and 0xFF) shl 8) or (b[off + 1].toInt() and 0xFF)
}
@@ -1,9 +0,0 @@
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="108dp"
android:height="108dp"
android:viewportWidth="108"
android:viewportHeight="108">
<path
android:fillColor="#6C63FF"
android:pathData="M0,0h108v108H0z" />
</vector>
@@ -1,9 +0,0 @@
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="108dp"
android:height="108dp"
android:viewportWidth="108"
android:viewportHeight="108">
<path
android:fillColor="#FFFFFF"
android:pathData="M54,30L54,70 M40,38L68,38 M36,54L44,38 M64,54L72,38 M36,54C36,56 44,56 44,54 M64,54C64,56 72,56 72,54" />
</vector>
@@ -1,340 +0,0 @@
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#F3F4F6">
<!-- ── Update banner (shown at the TOP when a new version is available) ─ -->
<LinearLayout
android:id="@+id/updateBanner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="#1e293b"
android:paddingStart="16dp"
android:paddingEnd="8dp"
android:paddingTop="10dp"
android:paddingBottom="10dp"
android:gravity="center_vertical"
android:visibility="gone">
<TextView
android:id="@+id/tvUpdateMessage"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textColor="#fbbf24"
android:textSize="13sp"
android:text="" />
<com.google.android.material.button.MaterialButton
android:id="@+id/btnInstallUpdate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:text="⬇ Scarica"
android:textSize="12sp"
android:textColor="#1e293b"
android:backgroundTint="#fbbf24"
style="@style/Widget.MaterialComponents.Button" />
<com.google.android.material.button.MaterialButton
android:id="@+id/btnDismissUpdate"
android:layout_width="36dp"
android:layout_height="36dp"
android:layout_marginStart="4dp"
android:text="✕"
android:textSize="14sp"
android:textColor="#94a3b8"
android:backgroundTint="@android:color/transparent"
style="@style/Widget.MaterialComponents.Button.TextButton" />
</LinearLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="16dp">
<!-- ── Header ─────────────────────────────────────────────────────── -->
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="⚖️ EverShelf Scale Gateway"
android:textSize="22sp"
android:textStyle="bold"
android:textColor="#1E293B"
android:paddingBottom="4dp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingBottom="16dp">
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Connect your smart scale to EverShelf via Bluetooth"
android:textSize="13sp"
android:textColor="#64748B" />
<TextView
android:id="@+id/tv_version"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="v?.?.?"
android:textSize="11sp"
android:textColor="#94A3B8"
android:fontFamily="monospace"
android:gravity="end" />
</LinearLayout>
<!-- ── Gateway URL card ───────────────────────────────────────────── -->
<androidx.cardview.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="12dp"
app:cardCornerRadius="12dp"
app:cardElevation="2dp"
app:cardBackgroundColor="#EFF6FF">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="16dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="🌐 Gateway URL (paste into EverShelf)"
android:textSize="12sp"
android:textColor="#64748B"
android:paddingBottom="4dp" />
<TextView
android:id="@+id/tv_gateway_url"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="ws://…:8765"
android:textSize="18sp"
android:textStyle="bold"
android:textColor="#1D4ED8"
android:fontFamily="monospace"
android:paddingBottom="4dp" />
<TextView
android:id="@+id/tv_gateway_url_hint"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Settings → Smart Scale"
android:textSize="11sp"
android:textColor="#94A3B8"
android:paddingBottom="8dp" />
<Button
android:id="@+id/btn_copy_url"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="📋 Copy URL"
android:backgroundTint="#1D4ED8"
android:textColor="#FFFFFF"
style="@style/Widget.MaterialComponents.Button" />
</LinearLayout>
</androidx.cardview.widget.CardView>
<!-- ── Gateway status ────────────────────────────────────────────── -->
<TextView
android:id="@+id/tv_gateway_status"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="⏳ Starting gateway…"
android:textSize="13sp"
android:textColor="#64748B"
android:paddingBottom="4dp" />
<TextView
android:id="@+id/tv_client_count"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text=""
android:textSize="12sp"
android:textColor="#059669"
android:paddingBottom="12dp"
android:visibility="gone" />
<!-- ── Scale connection card ──────────────────────────────────────── -->
<androidx.cardview.widget.CardView
android:id="@+id/card_connection"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="12dp"
app:cardCornerRadius="12dp"
app:cardElevation="2dp"
app:cardBackgroundColor="@android:color/darker_gray">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="16dp">
<TextView
android:id="@+id/tv_scale_status"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="⚡ Ready — scan for a scale"
android:textSize="15sp"
android:textStyle="bold"
android:textColor="#FFFFFF"
android:paddingBottom="8dp" />
<TextView
android:id="@+id/tv_weight"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="— — —"
android:textSize="46sp"
android:textStyle="bold"
android:textColor="#FFFFFF"
android:gravity="center"
android:paddingTop="8dp"
android:paddingBottom="4dp" />
<TextView
android:id="@+id/tv_weight_hint"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text=""
android:textSize="12sp"
android:textColor="#E2E8F0"
android:gravity="center"
android:paddingBottom="8dp" />
<TextView
android:id="@+id/tv_battery"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:textSize="12sp"
android:textColor="#E2E8F0"
android:visibility="gone" />
<Button
android:id="@+id/btn_disconnect"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="🔌 Disconnect scale"
android:backgroundTint="#EF4444"
android:textColor="#FFFFFF"
android:visibility="gone"
android:layout_marginTop="8dp"
style="@style/Widget.MaterialComponents.Button" />
</LinearLayout>
</androidx.cardview.widget.CardView>
<!-- ── Scan controls ──────────────────────────────────────────────── -->
<Button
android:id="@+id/btn_scan"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="🔍 Scan for Bluetooth Scales"
android:backgroundTint="#7C3AED"
android:textColor="#FFFFFF"
android:layout_marginBottom="8dp"
style="@style/Widget.MaterialComponents.Button" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginBottom="8dp">
<Button
android:id="@+id/btn_debug"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="\uD83D\uDC1B Debug"
android:backgroundTint="#374151"
android:textColor="#FFFFFF"
android:layout_marginEnd="4dp"
style="@style/Widget.MaterialComponents.Button" />
<Button
android:id="@+id/btn_copy_log"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="\uD83D\uDCCB"
android:backgroundTint="#374151"
android:textColor="#FFFFFF"
android:minWidth="48dp"
android:layout_marginEnd="4dp"
android:visibility="gone"
style="@style/Widget.MaterialComponents.Button" />
<Button
android:id="@+id/btn_share_log"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="\uD83D\uDCE4"
android:backgroundTint="#374151"
android:textColor="#FFFFFF"
android:minWidth="48dp"
android:visibility="gone"
style="@style/Widget.MaterialComponents.Button" />
</LinearLayout>
<ScrollView
android:id="@+id/sv_debug_log"
android:layout_width="match_parent"
android:layout_height="220dp"
android:layout_marginBottom="12dp"
android:background="#111827"
android:visibility="gone">
<TextView
android:id="@+id/tv_debug_log"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text=""
android:textSize="10sp"
android:fontFamily="monospace"
android:textColor="#4ADE80"
android:padding="8dp" />
</ScrollView>
<TextView
android:id="@+id/tv_scan_hint"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Press to scan for nearby BLE scales.\nMake sure the scale is turned on."
android:textSize="12sp"
android:textColor="#64748B"
android:paddingBottom="12dp"
android:visibility="gone" />
<!-- ── Device list ─────────────────────────────────────────────────── -->
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/rv_devices"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:nestedScrollingEnabled="false" />
</LinearLayout>
</ScrollView>
</LinearLayout>
@@ -1,58 +0,0 @@
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
app:cardCornerRadius="10dp"
app:cardElevation="1dp"
app:cardBackgroundColor="#FFFFFF">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="14dp"
android:gravity="center_vertical">
<TextView
android:layout_width="32dp"
android:layout_height="32dp"
android:text="⚖️"
android:textSize="20sp"
android:gravity="center"
android:layout_marginEnd="12dp" />
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:id="@+id/tv_device_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="15sp"
android:textStyle="bold"
android:textColor="#1E293B" />
<TextView
android:id="@+id/tv_device_addr"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="11sp"
android:fontFamily="monospace"
android:textColor="#94A3B8" />
</LinearLayout>
<TextView
android:id="@+id/tv_device_rssi"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="11sp"
android:textColor="#64748B" />
</LinearLayout>
</androidx.cardview.widget.CardView>
@@ -1,5 +0,0 @@
<?xml version="1.0" encoding="utf-8"?>
<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
<background android:drawable="@drawable/ic_launcher_background" />
<foreground android:drawable="@drawable/ic_launcher_foreground" />
</adaptive-icon>
@@ -1,5 +0,0 @@
<?xml version="1.0" encoding="utf-8"?>
<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
<background android:drawable="@drawable/ic_launcher_background" />
<foreground android:drawable="@drawable/ic_launcher_foreground" />
</adaptive-icon>
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@@ -1,12 +0,0 @@
<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="purple_500">#FF6200EE</color>
<color name="purple_700">#FF3700B3</color>
<color name="teal_200">#FF03DAC5</color>
<color name="white">#FFFFFFFF</color>
<color name="black">#FF000000</color>
<color name="accent">#7C3AED</color>
<color name="green">#059669</color>
<color name="red">#EF4444</color>
<color name="blue">#1D4ED8</color>
</resources>
@@ -1,4 +0,0 @@
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">EverShelf Scale Gateway</string>
</resources>
@@ -1,5 +0,0 @@
<?xml version="1.0" encoding="utf-8"?>
<paths>
<!-- App-private external dir: no storage permission needed -->
<external-files-path name="apk_downloads" path="." />
</paths>
-5
View File
@@ -1,5 +0,0 @@
// Top-level build file
plugins {
id("com.android.application") version "8.2.2" apply false
id("org.jetbrains.kotlin.android") version "1.9.22" apply false
}
@@ -1,2 +0,0 @@
android.useAndroidX=true
android.enableJetifier=true
@@ -1,6 +0,0 @@
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
networkTimeout=10000
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
@@ -1,17 +0,0 @@
pluginManagement {
repositories {
google()
mavenCentral()
gradlePluginPortal()
}
}
dependencyResolutionManagement {
repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
repositories {
google()
mavenCentral()
}
}
rootProject.name = "EverShelf Scale Gateway"
include(":app")