Add custom CrashHandler

This new CrashHandler will open the preferred email client for the user
to send the stacktrace of an unexpected crash.

husky/app/src/husky/res/values/donottranslate.xml

@@ -1,15 +1,15 @@
 <resources>
-    <!-- ACRA SPECIFIC STRINGS -->
-    <string name="acra_email">husky@nixnetmail.com</string>
-    <string name="acra_email_subject">Husky crashed</string>
-    <string name="acra_email_body">Please, explain the steps to reproduce the crash (english only):\n\n</string>
-    <string name="acra_email_report_filename">husky_crash_report.txt</string>
-    <string name="acra_notification_channel_title">ACRA</string>
-    <string name="acra_notification_channel_body">This channel is used for push notifications related to crashes captured by ACRA.</string>
-    <string name="acra_notification_title">Husky crashed</string>
-    <string name="acra_notification_body">There was an error that crashed Husky. If you want, you can report via email this crash.</string>
-    <string name="acra_notification_report">Report</string>
-    <string name="acra_notification_discard">Discard</string>
+    <!-- CrashHandler strings -->
+    <string name="crashhandler_email">husky@nixnetmail.com</string>
+    <string name="crashhandler_email_subject">Husky crashed</string>
+    <string name="crashhandler_email_body">Please, explain the steps to reproduce the crash (english only):\n\n</string>
+    <string name="crashhandler_email_report_filename">husky_crash.txt</string>
+    <string name="crashhandler_notification_channel_title">ACRA</string>
+    <string name="crashhandler_notification_channel_body">This channel is used for push notifications related to crashes captured by ACRA.</string>
+    <string name="crashhandler_notification_title">Husky crashed</string>
+    <string name="crashhandler_notification_body">There was an error that crashed Husky. If you want, you can report via email this crash.</string>
+    <string name="crashhandler_notification_report">Report</string>
+    <string name="crashhandler_notification_discard">Discard</string>
 
     <!-- REPLACEMENT FOR TUSKY STRINGS -->
     <string name="tusky_website" translatable="false">https://husky.adol.pw</string>

husky/app/src/main/java/com/keylesspalace/tusky/TuskyApplication.kt

@@ -31,6 +31,7 @@ import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
 import com.github.piasy.biv.BigImageViewer
 import com.github.piasy.biv.loader.glide.GlideCustomImageLoader
 import com.keylesspalace.tusky.components.notifications.NotificationWorkerFactory
+import com.keylesspalace.tusky.core.logging.CrashHandler
 import com.keylesspalace.tusky.core.logging.HyperlinkDebugTree
 import com.keylesspalace.tusky.core.utils.ApplicationUtils
 import com.keylesspalace.tusky.di.AppInjector
@@ -58,6 +59,10 @@ class TuskyApplication : Application(), HasAndroidInjector {
     override fun onCreate() {
         super.onCreate()
 
+        val preferences = PreferenceManager.getDefaultSharedPreferences(this)
+
+        CrashHandler.setAsDefaultHandler(this)
+
         if(ApplicationUtils.isDebug()) {
             Timber.plant(HyperlinkDebugTree())
         }
@@ -68,7 +73,6 @@ class TuskyApplication : Application(), HasAndroidInjector {
 
         AppInjector.init(this)
 
-        val preferences = PreferenceManager.getDefaultSharedPreferences(this)
 
         // init the custom emoji fonts
         val emojiSelection = preferences.getInt(PrefKeys.EMOJI, 0)
@@ -99,8 +103,6 @@ class TuskyApplication : Application(), HasAndroidInjector {
     override fun attachBaseContext(base: Context) {
         localeManager = LocaleManager(base)
         super.attachBaseContext(localeManager.setLocale(base))
-
-        //setupAcra()
     }
 
     override fun onConfigurationChanged(newConfig: Configuration) {
@@ -114,42 +116,4 @@ class TuskyApplication : Application(), HasAndroidInjector {
         @JvmStatic
         lateinit var localeManager: LocaleManager
     }
-
-    // TODO: Enable ACRA again after figuring out what's wrong.
-    /*
-    private fun setupAcra() {
-        initAcra {
-            buildConfigClass = BuildConfig::class.java
-            reportFormat = StringFormat.KEY_VALUE_LIST
-            reportContent = listOf(
-                ANDROID_VERSION,
-                APP_VERSION_NAME,
-                APP_VERSION_CODE,
-                BUILD_CONFIG,
-                STACK_TRACE
-            )
-
-            notification {
-                title = getString(R.string.acra_notification_title)
-                text = getString(R.string.acra_notification_body)
-                channelName = getString(R.string.acra_notification_channel_title)
-                channelDescription = getString(R.string.acra_notification_channel_body)
-                channelImportance = NotificationManagerCompat.IMPORTANCE_DEFAULT
-                //resIcon = R.drawable.notification_icon
-                sendButtonText = getString(R.string.acra_notification_report)
-                //resSendButtonIcon = R.drawable.notification_send
-                discardButtonText = getString(R.string.acra_notification_discard)
-                //resDiscardButtonIcon = R.drawable.notification_discard
-                sendOnClick = false
-            }
-
-            mailSender {
-                mailTo = getString(R.string.acra_email)
-                subject = getString(R.string.acra_email_subject)
-                body = getString(R.string.acra_email_body)
-                reportAsFile = true
-                reportFileName = getString(R.string.acra_email_report_filename)
-            }
-        }
-    }*/
 }

husky/app/src/main/java/com/keylesspalace/tusky/core/logging/CrashHandler.kt

@@ -0,0 +1,144 @@
+/*
+ * Husky -- A Pleroma client for Android
+ *
+ * Copyright (C) 2022  The Husky Developers
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.keylesspalace.tusky.core.logging
+
+import android.app.Activity
+import android.app.Application
+import android.content.Intent
+import android.net.Uri
+import android.os.Build.VERSION
+import android.os.Bundle
+import androidx.core.content.FileProvider
+import com.keylesspalace.tusky.BuildConfig
+import com.keylesspalace.tusky.R
+import com.keylesspalace.tusky.core.ui.callbacks.ActivityCallback
+import java.io.File
+import java.io.FileOutputStream
+import java.io.IOException
+import timber.log.Timber
+
+class CrashHandler(
+    private val defaultHandler: Thread.UncaughtExceptionHandler,
+    private val huskyApp: Application
+) : Thread.UncaughtExceptionHandler {
+
+    private var lastActivity: Activity? = null
+
+    companion object {
+        fun setAsDefaultHandler(application: Application) {
+            val handler = Thread.getDefaultUncaughtExceptionHandler()?.let {
+                CrashHandler(it, application)
+            }
+            Thread.setDefaultUncaughtExceptionHandler(handler)
+        }
+    }
+
+    init {
+        huskyApp.registerActivityLifecycleCallbacks(
+            object : ActivityCallback() {
+                override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) {
+                    lastActivity = activity
+                    Timber.d("onActivityCreated[${activity::class.simpleName}]")
+                }
+
+                override fun onActivityResumed(activity: Activity) {
+                    lastActivity = activity
+                    Timber.d("onActivityResumed[${activity::class.simpleName}]")
+                }
+
+                override fun onActivityStopped(activity: Activity) {
+                    lastActivity = null
+                    Timber.d("onActivityStopped[${activity::class.simpleName}]")
+                }
+            }
+        )
+    }
+
+    override fun uncaughtException(thread: Thread, throwable: Throwable) {
+        try {
+            sendLogEmail(throwable.stackTraceToString())
+        } catch(e: IOException) {
+            Timber.e("CrashHandler Exception[${e.message}]")
+        } finally {
+            lastActivity?.finish()
+        }
+    }
+
+    private fun getDeviceInfo(): String {
+        return StringBuilder().apply {
+            this.appendLine("Version name: ${BuildConfig.VERSION_NAME}")
+                .appendLine("Version code: ${BuildConfig.VERSION_CODE}")
+                .appendLine("OS Version: ${VERSION.RELEASE}")
+                .appendLine("SDK: ${VERSION.SDK_INT}")
+        }.toString()
+    }
+
+    private fun sendLogEmail(stacktrace: String) {
+        createCrashesFolder()
+
+        lastActivity?.let { activity ->
+            val formattedLog = StringBuilder().apply {
+                this.appendLine("## Steps to reproduce the crash:")
+                    .appendLine("1. ###")
+                    .appendLine("2. ###")
+                    .appendLine("...")
+                    .appendLine()
+                    .appendLine("## Instance: INSTANCE_DOMAIN")
+                    .appendLine()
+                    .appendLine("## Device details")
+                    .appendLine(getDeviceInfo())
+                    //.appendLine("## Crash details")
+                    //.appendLine(stacktrace)
+            }.toString()
+            Timber.d(formattedLog)
+
+            val intent = Intent(Intent.ACTION_SEND).apply {
+                type = "message/rfc822"
+                putExtra(Intent.EXTRA_EMAIL, arrayOf(activity.getString(R.string.crashhandler_email)))
+                putExtra(Intent.EXTRA_SUBJECT, "Husky ${BuildConfig.VERSION_NAME} crash")
+                putExtra(Intent.EXTRA_TEXT, formattedLog)
+                putExtra(Intent.EXTRA_STREAM, getCrashFileUri(activity, stacktrace))
+                flags = Intent.FLAG_GRANT_READ_URI_PERMISSION
+            }
+
+            if(intent.resolveActivity(activity.packageManager) != null) {
+                activity.startActivity(intent)
+            }
+        }
+    }
+
+    private fun createCrashesFolder() {
+        File("${huskyApp.cacheDir}/crashes").mkdirs()
+    }
+
+    private fun getCrashFileUri(activity: Activity, stacktrace: String): Uri {
+        val file = File("${huskyApp.cacheDir}/crashes", activity.getString(R.string.crashhandler_email_report_filename))
+        FileOutputStream(file).apply {
+            write(stacktrace.toByteArray())
+        }.also {
+            it.close()
+        }
+        return FileProvider.getUriForFile(
+            activity,
+            "${BuildConfig.APPLICATION_ID}.fileprovider",
+            file
+        )
+    }
+}

husky/app/src/main/java/com/keylesspalace/tusky/core/ui/callbacks/ActivityCallback.kt

@@ -0,0 +1,48 @@
+/*
+ * Husky -- A Pleroma client for Android
+ *
+ * Copyright (C) 2022  The Husky Developers
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.keylesspalace.tusky.core.ui.callbacks
+
+import android.app.Activity
+import android.app.Application.ActivityLifecycleCallbacks
+import android.os.Bundle
+
+open class ActivityCallback : ActivityLifecycleCallbacks {
+
+    override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) {
+    }
+
+    override fun onActivityStarted(activity: Activity) {
+    }
+
+    override fun onActivityResumed(activity: Activity) {
+    }
+
+    override fun onActivityPaused(activity: Activity) {
+    }
+
+    override fun onActivityStopped(activity: Activity) {
+    }
+
+    override fun onActivitySaveInstanceState(activity: Activity, outState: Bundle) {
+    }
+
+    override fun onActivityDestroyed(activity: Activity) {
+    }
+}

husky/app/src/main/res/xml/file_paths.xml

@@ -1,5 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <paths>
-    <external-path name="my_images" path="." />
-    <cache-path name="*" path="." />
-</paths>
+    <external-path
+        name="my_images"
+        path="." />
+    <cache-path
+        name="*"
+        path="." />
+    <cache-path
+        name="crashes"
+        path="crashes" />
+</paths>