Move common dispatchers to `:core:di` (#3178)

app/build.gradle.kts

@@ -182,6 +182,7 @@ project.afterEvaluate { logger.lifecycle("Version code is set to: ${android.defa
 dependencies {
     implementation(projects.core.data)
     implementation(projects.core.datastore)
+    implementation(projects.core.di)
     implementation(projects.core.model)
     implementation(projects.core.navigation)
     implementation(projects.core.network)

app/src/google/java/com/geeksville/mesh/di/MapModule.kt

@@ -24,30 +24,13 @@ import dagger.Module
 import dagger.Provides
 import dagger.hilt.InstallIn
 import dagger.hilt.components.SingletonComponent
-import kotlinx.coroutines.CoroutineDispatcher
-import kotlinx.coroutines.Dispatchers
 import kotlinx.serialization.json.Json
-import javax.inject.Qualifier
 import javax.inject.Singleton
 
-@Qualifier
-@Retention(AnnotationRetention.BINARY)
-annotation class IoDispatcher
-
-@Qualifier
-@Retention(AnnotationRetention.BINARY)
-annotation class DefaultDispatcher
-
 @Module
 @InstallIn(SingletonComponent::class)
 object MapModule {
 
-    @Provides @DefaultDispatcher
-    fun provideDefaultDispatcher(): CoroutineDispatcher = Dispatchers.Default
-
-    @Provides @IoDispatcher
-    fun provideIoDispatcher(): CoroutineDispatcher = Dispatchers.IO
-
     // Serialization Provider (from original SerializationModule)
     @Provides @Singleton
     fun provideJson(): Json = Json { prettyPrint = false }

app/src/google/java/com/geeksville/mesh/repository/map/SharedPreferencesCustomTileProviderRepository.kt

@@ -17,7 +17,6 @@
 
 package com.geeksville.mesh.repository.map
 
-import com.geeksville.mesh.di.IoDispatcher
 import com.geeksville.mesh.ui.map.CustomTileProviderConfig
 import kotlinx.coroutines.CoroutineDispatcher
 import kotlinx.coroutines.flow.Flow
@@ -26,6 +25,7 @@ import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.withContext
 import kotlinx.serialization.SerializationException
 import kotlinx.serialization.json.Json
+import org.meshtastic.core.di.annotation.IoDispatcher
 import org.meshtastic.core.prefs.map.MapTileProviderPrefs
 import timber.log.Timber
 import javax.inject.Inject

core/di/build.gradle.kts

@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2025 Meshtastic LLC
+ *
+ * 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/>.
+ */
+
+plugins {
+    alias(libs.plugins.meshtastic.android.library)
+    alias(libs.plugins.meshtastic.hilt)
+}
+
+android { namespace = "org.meshtastic.core.di" }
+
+dependencies {}

core/di/src/main/kotlin/org/meshtastic/core/di/AppModule.kt

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2025 Meshtastic LLC
+ *
+ * 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 org.meshtastic.core.di
+
+import dagger.Module
+import dagger.Provides
+import dagger.hilt.InstallIn
+import dagger.hilt.components.SingletonComponent
+import kotlinx.coroutines.CoroutineDispatcher
+import kotlinx.coroutines.Dispatchers
+import org.meshtastic.core.di.annotation.DefaultDispatcher
+import org.meshtastic.core.di.annotation.IoDispatcher
+
+@Module
+@InstallIn(SingletonComponent::class)
+object AppModule {
+
+    @Provides @DefaultDispatcher
+    fun provideDefaultDispatcher(): CoroutineDispatcher = Dispatchers.Default
+
+    @Provides @IoDispatcher
+    fun provideIoDispatcher(): CoroutineDispatcher = Dispatchers.IO
+}

core/di/src/main/kotlin/org/meshtastic/core/di/annotation/DefaultDispatcher.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2025 Meshtastic LLC
+ *
+ * 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 org.meshtastic.core.di.annotation
+
+import javax.inject.Qualifier
+
+@Qualifier
+@Retention(AnnotationRetention.BINARY)
+annotation class DefaultDispatcher

core/di/src/main/kotlin/org/meshtastic/core/di/annotation/IoDispatcher.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2025 Meshtastic LLC
+ *
+ * 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 org.meshtastic.core.di.annotation
+
+import javax.inject.Qualifier
+
+@Qualifier
+@Retention(AnnotationRetention.BINARY)
+annotation class IoDispatcher

settings.gradle.kts

@@ -17,7 +17,7 @@ import org.gradle.kotlin.dsl.maven
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-include(":app", ":core:data", ":core:datastore", ":core:model", ":core:navigation", ":core:network", ":core:prefs", ":core:proto",
+include(":app", ":core:data", ":core:datastore", ":core:di", ":core:model", ":core:navigation", ":core:network", ":core:prefs", ":core:proto",
     ":core:strings", ":feature:map", ":mesh_service_example")
 rootProject.name = "MeshtasticAndroid"