Add Dagger (#554)

* Add Dagger DI

* Preemptively fix tests

* Add missing licenses

* DI fixes

* ci fixes

app/src/main/java/com/keylesspalace/tusky/di/AppModule.kt

@@ -0,0 +1,68 @@
+/* Copyright 2018 charlag
+ *
+ * This file is a part of Tusky.
+ *
+ * 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.
+ *
+ * Tusky 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 Tusky; if not,
+ * see <http://www.gnu.org/licenses>. */
+
+
+package com.keylesspalace.tusky.di
+
+import android.app.Application
+import android.content.Context
+import android.content.SharedPreferences
+import android.preference.PreferenceManager
+import android.support.v4.content.LocalBroadcastManager
+import com.keylesspalace.tusky.R
+import com.keylesspalace.tusky.TuskyApplication
+import com.keylesspalace.tusky.db.AccountManager
+import com.keylesspalace.tusky.network.MastodonApi
+import com.keylesspalace.tusky.network.TimelineCases
+import com.keylesspalace.tusky.network.TimelineCasesImpl
+import dagger.Module
+import dagger.Provides
+import javax.inject.Singleton
+
+/**
+ * Created by charlag on 3/21/18.
+ */
+
+@Module
+class AppModule {
+
+    @Provides
+    fun providesApplication(app: TuskyApplication): Application = app
+
+    @Provides
+    fun providesContext(app: Application): Context = app
+
+    @Provides
+    fun providesSharedPreferences(app: Application): SharedPreferences {
+        return PreferenceManager.getDefaultSharedPreferences(app)
+    }
+
+    @Provides
+    fun providesBroadcastManager(app: Application): LocalBroadcastManager {
+        return LocalBroadcastManager.getInstance(app)
+    }
+
+    @Provides
+    fun providesTimelineUseCases(api: MastodonApi,
+                                 broadcastManager: LocalBroadcastManager): TimelineCases {
+        return TimelineCasesImpl(api, broadcastManager)
+    }
+
+    @Provides
+    @Singleton
+    fun providesAccountManager(app: TuskyApplication): AccountManager {
+        return app.serviceLocator.get(AccountManager::class.java)
+    }
+}