Integrate Should I Answer? blocking support (#977)

* Pulled over SIA code from 2.7.3

* Eliminate unnecessary service, fix service binding

* Flatten logic in isBlocked

* Return single which emits shouldBlock state

* Mark conversation as blocked during sync

data/src/main/java/manager/ExternalBlockingManagerImpl.kt

@@ -0,0 +1,116 @@
+/*
+ * Copyright (C) 2017 Moez Bhatti <moez.bhatti@gmail.com>
+ *
+ * This file is part of QKSMS.
+ *
+ * QKSMS 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.
+ *
+ * QKSMS 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 QKSMS.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package manager
+
+import android.content.ComponentName
+import android.content.Context
+import android.content.Intent
+import android.content.ServiceConnection
+import android.os.Handler
+import android.os.IBinder
+import android.os.Message
+import android.os.Messenger
+import androidx.os.bundleOf
+import io.reactivex.Single
+import io.reactivex.subjects.SingleSubject
+import timber.log.Timber
+import util.tryOrNull
+import javax.inject.Inject
+
+class ExternalBlockingManagerImpl @Inject constructor(private val context: Context) : ExternalBlockingManager {
+
+    companion object {
+        const val RATING_UNKNOWN = 0
+        const val RATING_POSITIVE = 1
+        const val RATING_NEGATIVE = 2
+        const val RATING_NEUTRAL = 3
+
+        const val GET_NUMBER_RATING = 1
+    }
+
+    /**
+     * Return a Single<Boolean> which emits whether or not the given [address] should be blocked
+     */
+    override fun shouldBlock(address: String): Single<Boolean> {
+        return Binder(context, address).shouldBlock()
+    }
+
+    private class Binder(private val context: Context, private val address: String) : ServiceConnection {
+
+        private val subject: SingleSubject<Boolean> = SingleSubject.create()
+        private var serviceMessenger: Messenger? = null
+        private var isBound: Boolean = false
+
+        fun shouldBlock(): Single<Boolean> {
+            // If either version of Should I Answer? is installed, build the intent to request a rating
+            val intent = tryOrNull {
+                context.packageManager.getApplicationInfo("org.mistergroup.shouldianswerpersonal", 0).enabled
+                Intent("org.mistergroup.shouldianswerpersonal.PublicService").setPackage("org.mistergroup.shouldianswerpersonal")
+            } ?: tryOrNull {
+                context.packageManager.getApplicationInfo("org.mistergroup.muzutozvednout", 0).enabled
+                Intent("org.mistergroup.muzutozvednout.PublicService").setPackage("org.mistergroup.muzutozvednout")
+            }
+
+            // If the intent isn't null, bind the service and wait for a result. Otherwise, don't block
+            if (intent != null) {
+                context.bindService(intent, this, Context.BIND_AUTO_CREATE)
+            } else {
+                subject.onSuccess(false)
+            }
+
+            return subject
+        }
+
+        override fun onServiceConnected(className: ComponentName, service: IBinder) {
+            serviceMessenger = Messenger(service)
+            isBound = true
+
+            val msg = Message()
+            msg.what = GET_NUMBER_RATING
+            msg.data = bundleOf(Pair("number", address))
+            msg.replyTo = Messenger(IncomingHandler { rating ->
+                subject.onSuccess(rating == RATING_NEGATIVE)
+                Timber.v("Should block: ${rating == RATING_NEGATIVE}")
+
+                // We're done, so unbind the service
+                if (isBound && serviceMessenger != null) {
+                    context.unbindService(this)
+                }
+            })
+
+            serviceMessenger?.send(msg)
+        }
+
+        override fun onServiceDisconnected(className: ComponentName) {
+            serviceMessenger = null
+            isBound = false
+        }
+    }
+
+    private class IncomingHandler(private val callback: (rating: Int) -> Unit) : Handler() {
+
+        override fun handleMessage(msg: Message) {
+            when (msg.what) {
+                GET_NUMBER_RATING -> callback(msg.data.getInt("rating"))
+                else -> super.handleMessage(msg)
+            }
+        }
+    }
+
+}

data/src/main/java/repository/MessageRepositoryImpl.kt

@@ -38,6 +38,7 @@ import io.reactivex.schedulers.Schedulers
 import io.realm.Realm
 import io.realm.RealmResults
 import io.realm.Sort
+import manager.ExternalBlockingManager
 import manager.KeyManager
 import mapper.CursorToConversation
 import mapper.CursorToRecipient
@@ -61,6 +62,7 @@ class MessageRepositoryImpl @Inject constructor(
         private val messageIds: KeyManager,
         private val cursorToConversation: CursorToConversation,
         private val cursorToRecipient: CursorToRecipient,
+        private val externalBlockingManager: ExternalBlockingManager,
         private val prefs: Preferences) : MessageRepository {
 
     override fun getConversations(archived: Boolean): Flowable<List<Conversation>> {
@@ -624,6 +626,11 @@ class MessageRepositoryImpl @Inject constructor(
                         }
                     }
 
+            // If any of the addresses here should be blocked, then block the conversation
+            conversation.blocked = recipients.map { it.address }.any { address ->
+                externalBlockingManager.shouldBlock(address).blockingGet()
+            }
+
             conversation.recipients.clear()
             conversation.recipients.addAll(recipients)
             conversation.insertOrUpdate()

data/src/main/java/util/Utils.kt

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2017 Moez Bhatti <moez.bhatti@gmail.com>
+ *
+ * This file is part of QKSMS.
+ *
+ * QKSMS 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.
+ *
+ * QKSMS 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 QKSMS.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package util
+
+fun <T> tryOrNull(body: () -> T?): T? {
+    return try {
+        body()
+    } catch (e: Exception) {
+        null
+    }
+}