Add automatic update checking service

build.gradle

@@ -22,7 +22,8 @@ android {
     defaultConfig {
         minSdk 24
         targetSdk 34
-        versionName "1.0"
+        versionName "0.1"
+        versionCode 31
 
         applicationId 'org.futo.inputmethod.latin'
         testApplicationId 'org.futo.inputmethod.latin.tests'

java/AndroidManifest.xml

@@ -15,12 +15,12 @@
 -->
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-     package="org.futo.inputmethod.latin"
-     android:versionCode="30">
+     package="org.futo.inputmethod.latin">
 
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
     <uses-permission android:name="android.permission.DOWNLOAD_WITHOUT_NOTIFICATION"/>
     <uses-permission android:name="android.permission.GET_ACCOUNTS"/>
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
     <uses-permission android:name="android.permission.READ_CONTACTS"/>
     <uses-permission android:name="android.permission.READ_PROFILE"/>
     <uses-permission android:name="android.permission.READ_SYNC_SETTINGS"/>
@@ -74,6 +74,12 @@
                  android:resource="@xml/method"/>
         </service>
 
+        <service
+            android:name="org.futo.inputmethod.updates.UpdateCheckingService"
+            android:label="@string/update_checking_service"
+            android:permission="android.permission.BIND_JOB_SERVICE" >
+        </service>
+
         <service android:name=".spellcheck.AndroidSpellCheckerService"
              android:label="@string/spell_checker_service_name"
              android:permission="android.permission.BIND_TEXT_SERVICE"

java/res/values/strings-uix.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<resources>
+<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
     <string name="voice_input_action_title">Voice Input</string>
     <string name="theme_switcher_action_title">Theme Switcher</string>
     <string name="emoji_action_title">Emojis</string>
@@ -26,4 +26,8 @@
     <string name="download_in_progress">Downloading models…</string>
 
     <string name="model_downloader">Model Downloader</string>
+
+    <string name="update_checking_service">Update Checking service</string>
+    <string name="update_available">Update Available</string>
+    <string name="update_available_notification">An update is available (<xliff:g name="versionDiff" example="v1 -> v2">%s</xliff:g>). Tap to download</string>
 </resources>

java/src/org/futo/inputmethod/latin/LatinIME.kt

@@ -53,6 +53,7 @@ import org.futo.inputmethod.latin.uix.theme.ThemeOption
 import org.futo.inputmethod.latin.uix.theme.ThemeOptions
 import org.futo.inputmethod.latin.uix.theme.presets.VoiceInputTheme
 import org.futo.inputmethod.latin.xlm.LanguageModelFacilitator
+import org.futo.inputmethod.updates.scheduleUpdateCheckingJob
 
 class LatinIME : InputMethodService(), LifecycleOwner, ViewModelStoreOwner, SavedStateRegistryOwner,
     LatinIMELegacy.SuggestionStripController, DynamicThemeProviderOwner {
@@ -210,6 +211,8 @@ class LatinIME : InputMethodService(), LifecycleOwner, ViewModelStoreOwner, Save
 
         languageModelFacilitator.launchProcessor()
         languageModelFacilitator.loadHistoryLog()
+
+        scheduleUpdateCheckingJob(this)
     }
 
     override fun onDestroy() {

java/src/org/futo/inputmethod/latin/uix/settings/pages/Home.kt

@@ -1,29 +1,38 @@
 package org.futo.inputmethod.latin.uix.settings.pages
 
 import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
+import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.navigation.NavHostController
 import androidx.navigation.compose.rememberNavController
+import org.futo.inputmethod.latin.BuildConfig
 import org.futo.inputmethod.latin.R
 import org.futo.inputmethod.latin.uix.settings.NavigationItem
 import org.futo.inputmethod.latin.uix.settings.NavigationItemStyle
 import org.futo.inputmethod.latin.uix.settings.ScreenTitle
 import org.futo.inputmethod.latin.uix.settings.ScrollableList
 import org.futo.inputmethod.latin.uix.settings.openLanguageSettings
+import org.futo.inputmethod.latin.uix.theme.Typography
+import org.futo.inputmethod.updates.ConditionalUpdate
 
-@Preview
+@Preview(showBackground = true)
 @Composable
 fun HomeScreen(navController: NavHostController = rememberNavController()) {
     val context = LocalContext.current
     ScrollableList {
         Spacer(modifier = Modifier.height(24.dp))
         ScreenTitle("FUTO Keyboard Settings")
+
+        ConditionalUpdate()
+
         NavigationItem(
             title = "Languages",
             style = NavigationItemStyle.HomePrimary,
@@ -59,13 +68,14 @@ fun HomeScreen(navController: NavHostController = rememberNavController()) {
             icon = painterResource(id = R.drawable.eye)
         )
 
-        /*
-        NavigationItem(
-            title = "Advanced",
-            style = NavigationItemStyle.Misc,
-            navigate = { },
-            icon = painterResource(id = R.drawable.delete)
+
+        Spacer(modifier = Modifier.height(32.dp))
+        Text(
+            "v${BuildConfig.VERSION_NAME}",
+            style = Typography.labelSmall,
+            modifier = Modifier.fillMaxWidth(),
+            textAlign = TextAlign.Center
         )
-        */
+        Spacer(modifier = Modifier.height(32.dp))
     }
 }

java/src/org/futo/inputmethod/updates/Update.kt

@@ -0,0 +1,58 @@
+package org.futo.inputmethod.updates
+
+import android.content.ActivityNotFoundException
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.widget.Toast
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.ArrowForward
+import androidx.compose.material3.Icon
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalInspectionMode
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.datastore.preferences.core.stringPreferencesKey
+import org.futo.inputmethod.latin.uix.settings.SettingItem
+import org.futo.inputmethod.latin.uix.settings.useDataStore
+
+val LAST_UPDATE_CHECK_RESULT = stringPreferencesKey("last_update_check_result")
+
+fun Context.openURI(uri: String, newTask: Boolean = false) {
+    try {
+        val intent = Intent(Intent.ACTION_VIEW, Uri.parse(uri))
+        if (newTask) {
+            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+        }
+
+        startActivity(intent)
+    } catch(e: ActivityNotFoundException) {
+        Toast.makeText(this, e.localizedMessage, Toast.LENGTH_SHORT).show()
+    }
+}
+
+@Composable
+@Preview
+fun ConditionalUpdate() {
+    val (updateInfo, _) = useDataStore(key = LAST_UPDATE_CHECK_RESULT, default = "")
+
+    val lastUpdateResult = if(!LocalInspectionMode.current){
+        UpdateResult.fromString(updateInfo)
+    } else {
+        UpdateResult(123, "abc", "1.2.3")
+    }
+
+    val context = LocalContext.current
+    if(lastUpdateResult != null && lastUpdateResult.isNewer()) {
+        SettingItem(
+            title = "Update Available",
+            subtitle = "${UpdateResult.currentVersionString()} -> ${lastUpdateResult.nextVersionString}",
+            onClick = {
+                context.openURI(lastUpdateResult.apkUrl)
+            }
+        ) {
+            Icon(Icons.Default.ArrowForward, contentDescription = "Go")
+        }
+
+    }
+}

java/src/org/futo/inputmethod/updates/UpdateChecking.kt

@@ -0,0 +1,101 @@
+package org.futo.inputmethod.updates
+
+import android.app.job.JobInfo
+import android.app.job.JobScheduler
+import android.content.ComponentName
+import android.content.Context
+import android.os.Build
+import android.util.Log
+import androidx.datastore.preferences.core.edit
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import okhttp3.internal.closeQuietly
+import org.futo.inputmethod.latin.uix.dataStore
+import org.futo.inputmethod.latin.uix.getSetting
+import java.lang.Exception
+
+const val UPDATE_URL = "https://voiceinput.futo.org/SuperSecretKeyboard/keyboard_version"
+
+suspend fun checkForUpdate(): UpdateResult? {
+    return withContext(Dispatchers.IO) {
+        val httpClient = OkHttpClient()
+
+        val request = Request.Builder().method("GET", null).url(UPDATE_URL).build()
+
+        try {
+            val response = httpClient.newCall(request).execute()
+
+            val body = response.body
+
+            val result = if (body != null) {
+                val data = body.string().lines()
+                body.closeQuietly()
+
+                val latestVersion = data[0].toInt()
+                val latestVersionUrl = data[1]
+                val latestVersionString = data[2]
+                if(latestVersionUrl.startsWith("https://voiceinput.futo.org/") || latestVersionUrl.startsWith("https://keyboard.futo.org/")){
+                    UpdateResult(
+                        nextVersion = latestVersion,
+                        apkUrl = latestVersionUrl,
+                        nextVersionString = latestVersionString
+                    )
+                } else {
+                    null
+                }
+            } else {
+                null
+            }
+
+            response.closeQuietly()
+
+            result
+        } catch (e: Exception) {
+            null
+        }
+    }
+}
+
+suspend fun checkForUpdateAndSaveToPreferences(context: Context): Boolean {
+    val updateResult = checkForUpdate()
+    if(updateResult != null) {
+        withContext(Dispatchers.IO) {
+            context.dataStore.edit {
+                it[LAST_UPDATE_CHECK_RESULT] = Json.encodeToString(updateResult)
+            }
+        }
+        return true
+    }
+
+    return false
+}
+
+suspend fun retrieveSavedLastUpdateCheckResult(context: Context): UpdateResult? {
+    return UpdateResult.fromString(context.getSetting(LAST_UPDATE_CHECK_RESULT, ""))
+}
+
+const val JOB_ID: Int = 15782788
+fun scheduleUpdateCheckingJob(context: Context) {
+    val jobScheduler = context.getSystemService(Context.JOB_SCHEDULER_SERVICE) as JobScheduler
+
+    if(jobScheduler.getPendingJob(JOB_ID) != null) {
+        Log.i("UpdateChecking", "Job already scheduled, no need to do anything")
+        return
+    }
+
+    var jobInfoBuilder = JobInfo.Builder(JOB_ID, ComponentName(context, UpdateCheckingService::class.java))
+        .setPeriodic(1000 * 60 * 60 * 24 * 2) // every two days
+        .setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED) // on unmetered Wi-Fi
+        .setPersisted(true) // persist after reboots
+
+    // Update checking has minimum priority
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+        jobInfoBuilder = jobInfoBuilder.setPriority(JobInfo.PRIORITY_MIN)
+    }
+
+    jobScheduler.schedule(jobInfoBuilder.build())
+}

java/src/org/futo/inputmethod/updates/UpdateCheckingService.kt

@@ -0,0 +1,74 @@
+package org.futo.inputmethod.updates
+
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.app.job.JobParameters
+import android.app.job.JobService
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.os.Build
+import android.util.Log
+import androidx.core.app.NotificationCompat
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.launch
+import org.futo.inputmethod.latin.R
+
+const val CHANNEL_ID = "UPDATES"
+const val NOTIFICATION_ID = 1
+
+class UpdateCheckingService : JobService() {
+    private var job: Job? = null
+    override fun onStartJob(params: JobParameters?): Boolean {
+        job = CoroutineScope(Dispatchers.IO).launch {
+            if(checkForUpdateAndSaveToPreferences(applicationContext)) {
+                val updateResult = retrieveSavedLastUpdateCheckResult(applicationContext)
+
+                if(updateResult != null && updateResult.isNewer()) {
+                    // Show a notification : "Update available"
+                    val manager = applicationContext.getSystemService(
+                        Context.NOTIFICATION_SERVICE
+                    ) as NotificationManager
+
+                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                        val channel = NotificationChannel(
+                            CHANNEL_ID,
+                            "Update Notifications",
+                            NotificationManager.IMPORTANCE_MIN
+                        )
+
+                        manager.createNotificationChannel(channel)
+                    }
+
+                    val contentIntent = PendingIntent.getActivity(
+                        applicationContext,
+                        0,
+                        Intent(Intent.ACTION_VIEW, Uri.parse(updateResult.apkUrl)),
+                        PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
+                    )
+
+                    val notification = NotificationCompat.Builder(applicationContext, CHANNEL_ID)
+                        .setContentTitle(getString(R.string.update_available))
+                        .setContentText(getString(R.string.update_available_notification,"${UpdateResult.currentVersionString()} -> ${updateResult.nextVersionString}"))
+                        .setSmallIcon(R.drawable.ic_launcher_foreground)
+                        .setContentIntent(contentIntent)
+
+                    manager.notify(NOTIFICATION_ID, notification.build())
+                }
+            } else {
+                Log.i("UpdateCheckingService", "no update available, or failed to check")
+            }
+            jobFinished(params, false)
+        }
+        return true
+    }
+
+    override fun onStopJob(params: JobParameters?): Boolean {
+        job?.cancel()
+
+        return false
+    }
+}

java/src/org/futo/inputmethod/updates/UpdateResult.kt

@@ -0,0 +1,41 @@
+package org.futo.inputmethod.updates
+
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.SerializationException
+import kotlinx.serialization.json.Json
+import org.futo.inputmethod.latin.BuildConfig
+
+@Serializable
+data class UpdateResult(
+    val nextVersion: Int,
+    val apkUrl: String,
+    val nextVersionString: String
+) {
+    fun isNewer(): Boolean {
+        return nextVersion > currentVersion()
+    }
+
+    companion object {
+        fun currentVersion(): Int {
+            return BuildConfig.VERSION_CODE
+        }
+
+        fun currentVersionString(): String {
+            return BuildConfig.VERSION_NAME
+        }
+
+        fun fromString(value: String): UpdateResult? {
+            if(value.isEmpty()) {
+                return null
+            }
+
+            try {
+                return Json.decodeFromString<UpdateResult>(value)
+            } catch(e: SerializationException) {
+                return null
+            } catch(e: IllegalArgumentException) {
+                return null
+            }
+        }
+    }
+}

tests/AndroidManifest.xml

@@ -15,8 +15,7 @@
 -->
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="org.futo.inputmethod.latin.tests"
-    android:versionCode="30">
+    package="org.futo.inputmethod.latin.tests">
 
     <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="30" />