Make nightly builds a separate app

This allows users to have nightly builds alongside the production builds

.github/workflows/main.yaml

@@ -51,7 +51,7 @@ jobs:
           echo "MELONDS_KEY_ALIAS=melonds" >> local.properties
           echo "MELONDS_KEY_PASSWORD=$MELONDS_KEYSTORE_PASSWORD" >> local.properties
           chmod +x ./gradlew
-          ./gradlew :app:assembleGitHubRelease
+          ./gradlew :app:assembleGitHubNightlyRelease
           git tag -m "Nightly Release" -f -a nightly-release
           git push -f origin refs/tags/nightly-release
 
@@ -64,12 +64,12 @@ jobs:
           token: ${{ secrets.GITHUB_TOKEN }}
           tag: nightly-release
           name: 'Nightly Build'
-          body: 'The currently Nightly Build. Whenever new changes are pushed, you can find the latest build here.'
+          body: 'The currently Nightly Build. Whenever new changes are pushed, you can find the latest build here. You can keep this installation alongside your main one.'
-          artifacts: app/build/outputs/apk/gitHub/release/app-gitHub-release.apk
+          artifacts: app/build/outputs/apk/gitHubNightly/release/app-gitHub-nightly-release.apk
           artifactContentType: application/vnd.android.package-archive
 
       - name: Upload Artifact
         uses: actions/upload-artifact@v3
         with:
           name: melonDS-android
-          path: app/build/outputs/apk/gitHub/release/app-gitHub-release.apk
+          path: app/build/outputs/apk/gitHubNightly/release/app-gitHub-nightly-release.apk

.github/workflows/release-playstore.yaml

@@ -35,7 +35,7 @@ jobs:
           echo "MELONDS_KEY_ALIAS=melonds-playstore" >> local.properties
           echo "MELONDS_KEY_PASSWORD=$MELONDS_KEY_PASSWORD" >> local.properties
           chmod +x ./gradlew
-          ./gradlew :app:assemblePlayStoreRelease
+          ./gradlew :app:assemblePlayStoreProdRelease
 
       - name: Get Version
         id: release_params
@@ -47,19 +47,19 @@ jobs:
           serviceAccountJsonPlainText: ${{ secrets.MELONDS_PLAYSTORE_ACCOUNT_JSON }}
           packageName: me.magnum.melonds
           releaseName: ${{ steps.release_params.outputs.VERSION }}
-          releaseFiles: app/build/outputs/apk/playStore/release/app-playStore-release.apk
+          releaseFiles: app/build/outputs/apk/playStoreProd/release/app-playStore-prod-release.apk
           track: beta
           inAppUpdatePriority: 2
           status: draft
           whatsNewDirectory: ./.github/changelog/playStore
-          mappingFile: app/build/outputs/mapping/playStoreRelease/mapping.txt
+          mappingFile: app/build/outputs/mapping/playStoreProdRelease/mapping.txt
-          debugSymbols: app/build/outputs/native-debug-symbols/playStoreRelease/native-debug-symbols.zip
+          debugSymbols: app/build/outputs/native-debug-symbols/playStoreProdRelease/native-debug-symbols.zip
 
       - name: Upload APK, Mapping and Debug Symbols
         uses: actions/upload-artifact@v3
         with:
           name: playstore-release
           path: |
-            app/build/outputs/apk/playStore/release/app-playStore-release.apk
+            app/build/outputs/apk/playStoreProd/release/app-playStore-prod-release.apk
-            app/build/outputs/mapping/playStoreRelease/mapping.txt
+            app/build/outputs/mapping/playStoreProdRelease/mapping.txt
-            app/build/outputs/native-debug-symbols/playStoreRelease/native-debug-symbols.zip
+            app/build/outputs/native-debug-symbols/playStoreProdRelease/native-debug-symbols.zip

.github/workflows/release.yaml

@@ -36,7 +36,7 @@ jobs:
           echo "MELONDS_KEY_ALIAS=melonds" >> local.properties
           echo "MELONDS_KEY_PASSWORD=$MELONDS_KEYSTORE_PASSWORD" >> local.properties
           chmod +x ./gradlew
-          ./gradlew :app:assembleGitHubRelease
+          ./gradlew :app:assembleGitHubProdRelease
 
       - name: Get Tag and Version
         id: release_params
@@ -52,7 +52,7 @@ jobs:
           tag: ${{ steps.release_params.outputs.TAG }}
           name: ${{ steps.release_params.outputs.VERSION }}
           bodyFile: ./.github/changelog/gitHub.md
-          artifacts: app/build/outputs/apk/gitHub/release/app-gitHub-release.apk
+          artifacts: app/build/outputs/apk/gitHubProd/release/app-gitHub-prod-release.apk
           artifactContentType: application/vnd.android.package-archive
 
       - name: Upload APK, Mapping and Debug Symbols
@@ -60,9 +60,9 @@ jobs:
         with:
           name: github-release
           path: |
-            app/build/outputs/apk/gitHub/release/app-gitHub-release.apk
+            app/build/outputs/apk/gitHubProd/release/app-gitHub-prod-release.apk
-            app/build/outputs/mapping/gitHubRelease/mapping.txt
+            app/build/outputs/mapping/gitHubProdRelease/mapping.txt
-            app/build/outputs/native-debug-symbols/gitHubRelease/native-debug-symbols.zip
+            app/build/outputs/native-debug-symbols/gitHubProdRelease/native-debug-symbols.zip
 
   playstore-release:
     runs-on: ubuntu-latest
@@ -93,7 +93,7 @@ jobs:
           echo "MELONDS_KEY_ALIAS=melonds-playstore" >> local.properties
           echo "MELONDS_KEY_PASSWORD=$MELONDS_KEY_PASSWORD" >> local.properties
           chmod +x ./gradlew
-          ./gradlew :app:assemblePlayStoreRelease
+          ./gradlew :app:assemblePlayStoreProdRelease
 
       - name: Get Version
         id: release_params
@@ -105,19 +105,19 @@ jobs:
           serviceAccountJsonPlainText: ${{ secrets.MELONDS_PLAYSTORE_ACCOUNT_JSON }}
           packageName: me.magnum.melonds
           releaseName: ${{ steps.release_params.outputs.VERSION }}
-          releaseFiles: app/build/outputs/apk/playStore/release/app-playStore-release.apk
+          releaseFiles: app/build/outputs/apk/playStoreProd/release/app-playStore-prod-release.apk
           track: beta
           inAppUpdatePriority: 2
           status: draft
           whatsNewDirectory: ./.github/changelog/playStore
-          mappingFile: app/build/outputs/mapping/playStoreRelease/mapping.txt
+          mappingFile: app/build/outputs/mapping/playStoreProdRelease/mapping.txt
-          debugSymbols: app/build/outputs/native-debug-symbols/playStoreRelease/native-debug-symbols.zip
+          debugSymbols: app/build/outputs/native-debug-symbols/playStoreProdRelease/native-debug-symbols.zip
 
       - name: Upload APK, Mapping and Debug Symbols
         uses: actions/upload-artifact@v3
         with:
           name: playstore-release
           path: |
-            app/build/outputs/apk/playStore/release/app-playStore-release.apk
+            app/build/outputs/apk/playStoreProd/release/app-playStore-prod-release.apk
-            app/build/outputs/mapping/playStoreRelease/mapping.txt
+            app/build/outputs/mapping/playStoreProdRelease/mapping.txt
-            app/build/outputs/native-debug-symbols/playStoreRelease/native-debug-symbols.zip
+            app/build/outputs/native-debug-symbols/playStoreProdRelease/native-debug-symbols.zip

README.md

@@ -27,6 +27,12 @@ third-party frontend with the following configuration:
     * `uri` (preferred) - a string with the [SAF](https://developer.android.com/guide/topics/providers/create-document-provider) URI of the NDS ROM (ZIP files are supported)
     * `PATH` - a string with the absolute path to the NDS ROM (ZIP files are supported)
 
+# Nightly Builds
+
+To have access to the latest changes, you can install nightly builds that you can find [here](https://github.com/rafaelvcaetano/melonDS-android/releases/tag/nightly-release).
+
+Be aware that these builds can contain more bugs than usual and you may need to clear your app data to get it to work properly.
+
 # Building
 To build the project you will need Android SDK, NDK and CMake.
 
@@ -36,9 +42,9 @@ To build the project you will need Android SDK, NDK and CMake.
     `git clone --recurse-submodules https://github.com/rafaelvcaetano/melonDS-android.git`
 2.  Install the Android SDK, NDK and CMake
 3.  Build with:
-    1.  Unix: `./gradlew :app:assembleGitHubDebug`
+    1.  Unix: `./gradlew :app:assembleGitHubProdDebug`
-    2.  Windows: `gradlew.bat :app:assembleGitHubDebug`
+    2.  Windows: `gradlew.bat :app:assembleGitHubProdDebug`
-4.  The generated APK can be found at `app/gitHub/debug`
+4.  The generated APK can be found at `app/gitHubProd/debug`
 
 If you want to create a release build, you will need to modify your `local.properties` file to include the following fields:  
 *  `MELONDS_KEYSTORE=<path_to_your_keystore>`

app/build.gradle.kts

@@ -63,6 +63,7 @@ android {
     }
 
     flavorDimensions.add("version")
+    flavorDimensions.add("build")
     productFlavors {
         create("playStore") {
             dimension = "version"
@@ -70,8 +71,19 @@ android {
         }
         create("gitHub") {
             dimension = "version"
+            isDefault = true
             versionNameSuffix = " GH"
         }
+
+        create("prod") {
+            dimension = "build"
+            isDefault = true
+        }
+        create("nightly") {
+            dimension = "build"
+            applicationIdSuffix = ".nightly"
+            versionNameSuffix = " (NIGHTLY)"
+        }
     }
     externalNativeBuild {
         cmake {

app/src/gitHub/java/me/magnum/melonds/di/GitHubModule.kt

@@ -7,10 +7,8 @@ import dagger.Provides
 import dagger.hilt.InstallIn
 import dagger.hilt.android.qualifiers.ApplicationContext
 import dagger.hilt.components.SingletonComponent
-import me.magnum.melonds.domain.repositories.UpdatesRepository
 import me.magnum.melonds.domain.services.UpdateInstallManager
 import me.magnum.melonds.github.GitHubApi
-import me.magnum.melonds.github.repositories.GitHubUpdatesRepository
 import me.magnum.melonds.github.services.GitHubUpdateInstallManager
 import retrofit2.Retrofit
 import retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory
@@ -32,13 +30,6 @@ object GitHubModule {
         return retrofit.create(GitHubApi::class.java)
     }
 
-    @Provides
-    @Singleton
-    fun provideUpdatesRepository(@ApplicationContext context: Context, gitHubApi: GitHubApi): UpdatesRepository {
-        val gitHubPreferences = context.getSharedPreferences("preferences-github", Context.MODE_PRIVATE)
-        return GitHubUpdatesRepository(context, gitHubApi, gitHubPreferences)
-    }
-
     @Provides
     @Singleton
     fun provideUpdateInstallManager(@ApplicationContext context: Context): UpdateInstallManager {

app/src/gitHub/java/me/magnum/melonds/github/GitHubApi.kt

@@ -7,4 +7,7 @@ import retrofit2.http.GET
 interface GitHubApi {
     @GET("/repos/rafaelvcaetano/melonDS-android/releases/latest")
     fun getLatestRelease(): Single<ReleaseDto>
+
+    @GET("/repos/rafaelvcaetano/melonDS-android/releases/tags/nightly-release")
+    fun getLatestNightlyRelease(): Single<ReleaseDto>
 }

app/src/gitHub/java/me/magnum/melonds/github/GitHubConstants.kt

@@ -0,0 +1,5 @@
+package me.magnum.melonds.github
+
+const val APK_CONTENT_TYPE = "application/vnd.android.package-archive"
+
+const val PREF_KEY_GITHUB_CHECK_FOR_UPDATES = "github_check_for_updates"

app/src/gitHub/java/me/magnum/melonds/github/dtos/ReleaseDto.kt

@@ -6,5 +6,6 @@ data class ReleaseDto(
     @SerializedName("tag_name") val tagName: String,
     @SerializedName("name") val name: String,
     @SerializedName("body") val body: String,
+    @SerializedName("created_at") val createdAt: String,
     @SerializedName("assets") val assets: List<AssetDto>
 )

app/src/gitHub/java/me/magnum/melonds/github/services/GitHubUpdateInstallManager.kt

@@ -10,7 +10,7 @@ import android.net.Uri
 import androidx.core.content.getSystemService
 import io.reactivex.Observable
 import me.magnum.melonds.common.providers.UpdateContentProvider
-import me.magnum.melonds.domain.model.AppUpdate
+import me.magnum.melonds.domain.model.appupdate.AppUpdate
 import me.magnum.melonds.domain.model.DownloadProgress
 import me.magnum.melonds.domain.services.UpdateInstallManager
 import java.io.File

app/src/gitHub/res/xml/pref_general_updates.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <SwitchPreference
+        android:key="github_check_for_updates"
+        android:title="@string/check_for_updates"
+        android:summary="@string/check_for_updates_summary"
+        app:iconSpaceReserved="false"
+        android:defaultValue="true" />
+</PreferenceScreen>

app/src/gitHubNightly/java/me/magnum/melonds/di/GitHubNightlyModule.kt

@@ -0,0 +1,24 @@
+package me.magnum.melonds.di
+
+import android.content.Context
+import dagger.Module
+import dagger.Provides
+import dagger.hilt.InstallIn
+import dagger.hilt.android.qualifiers.ApplicationContext
+import dagger.hilt.components.SingletonComponent
+import me.magnum.melonds.domain.repositories.UpdatesRepository
+import me.magnum.melonds.github.GitHubApi
+import me.magnum.melonds.github.repositories.GitHubNightlyUpdatesRepository
+import javax.inject.Singleton
+
+@Module
+@InstallIn(SingletonComponent::class)
+object GitHubNightlyModule {
+
+    @Provides
+    @Singleton
+    fun provideUpdatesRepository(@ApplicationContext context: Context, gitHubApi: GitHubApi): UpdatesRepository {
+        val gitHubPreferences = context.getSharedPreferences("preferences-github", Context.MODE_PRIVATE)
+        return GitHubNightlyUpdatesRepository(gitHubApi, gitHubPreferences)
+    }
+}

app/src/gitHubNightly/java/me/magnum/melonds/github/repositories/GitHubNightlyUpdatesRepository.kt

@@ -0,0 +1,115 @@
+package me.magnum.melonds.github.repositories
+
+import android.content.SharedPreferences
+import androidx.core.content.edit
+import androidx.core.net.toUri
+import io.reactivex.Maybe
+import io.reactivex.Single
+import me.magnum.melonds.domain.model.Version
+import me.magnum.melonds.domain.model.appupdate.AppUpdate
+import me.magnum.melonds.domain.repositories.UpdatesRepository
+import me.magnum.melonds.github.APK_CONTENT_TYPE
+import me.magnum.melonds.github.GitHubApi
+import me.magnum.melonds.github.PREF_KEY_GITHUB_CHECK_FOR_UPDATES
+import me.magnum.melonds.github.dtos.ReleaseDto
+import java.time.Duration
+import java.time.Instant
+
+class GitHubNightlyUpdatesRepository(private val api: GitHubApi, private val preferences: SharedPreferences) : UpdatesRepository {
+    companion object {
+        private const val KEY_NEXT_CHECK_DATE = "github_updates_nightly_next_check_date"
+        private const val KEY_LAST_RELEASE_DATE = "github_updates_nightly_last_release_date"
+    }
+
+    override fun checkNewUpdate(): Maybe<AppUpdate> {
+        return shouldCheckUpdates()
+            .flatMapMaybe { checkUpdates ->
+                if (checkUpdates) {
+                    api.getLatestNightlyRelease().flatMapMaybe { release ->
+                        if (shouldUpdate(release)) {
+                            val apkBinary = release.assets.firstOrNull { it.contentType == APK_CONTENT_TYPE }
+                            if (apkBinary != null) {
+                                val update = AppUpdate(
+                                    AppUpdate.Type.NIGHTLY,
+                                    apkBinary.id,
+                                    apkBinary.url.toUri(),
+                                    Version.fromString(release.tagName),
+                                    release.body,
+                                    apkBinary.size,
+                                    Instant.parse(release.createdAt),
+                                )
+                                Maybe.just(update)
+                            } else {
+                                Maybe.empty()
+                            }
+                        } else {
+                            Maybe.empty()
+                        }
+                    }
+                } else {
+                    Maybe.empty()
+                }
+            }
+    }
+
+    override fun skipUpdate(update: AppUpdate) {
+        scheduleNextUpdate()
+    }
+
+    override fun notifyUpdateDownloaded(update: AppUpdate) {
+        // This doesn't mean that the user has actually installed the update, but we have no way to determine that. As such, just assume that the update will be installed and
+        // store the date of the update
+        preferences.edit {
+            putLong(KEY_LAST_RELEASE_DATE, update.updateDate.toEpochMilli())
+        }
+    }
+
+    private fun shouldCheckUpdates(): Single<Boolean> {
+        return Single.create { emitter ->
+            val updateCheckEnabled = preferences.getBoolean(PREF_KEY_GITHUB_CHECK_FOR_UPDATES, true)
+            if (!updateCheckEnabled) {
+                emitter.onSuccess(false)
+                return@create
+            }
+
+            val nextUpdateCheckTime = preferences.getLong(KEY_NEXT_CHECK_DATE, -1)
+            if (nextUpdateCheckTime == (-1).toLong()) {
+                emitter.onSuccess(true)
+                return@create
+            }
+
+            val now = Instant.now()
+            val shouldCheckUpdates = now.toEpochMilli() > nextUpdateCheckTime
+
+            emitter.onSuccess(shouldCheckUpdates)
+        }
+    }
+
+    private fun scheduleNextUpdate() {
+        val now = Instant.now()
+        val nextUpdateDate = now + Duration.ofDays(1)
+
+        preferences.edit {
+            putLong(KEY_NEXT_CHECK_DATE, nextUpdateDate.toEpochMilli())
+        }
+    }
+
+    private fun shouldUpdate(releaseDto: ReleaseDto): Boolean {
+        val lastReleaseDate = preferences.getLong(KEY_LAST_RELEASE_DATE, -1)
+        if (lastReleaseDate == -1L) {
+            // If there is no last release date, then it's the first time the user is running the app and checking for updates. Ignore this release since we can't check if
+            // it's actually different from the one the user has installed, and save the release date in the preferences so that we can have a future reference
+
+            val releaseDate = Instant.parse(releaseDto.createdAt)
+            preferences.edit {
+                putLong(KEY_LAST_RELEASE_DATE, releaseDate.toEpochMilli())
+            }
+            scheduleNextUpdate()
+            return false
+        }
+
+        val thisReleaseDate = Instant.parse(releaseDto.createdAt)
+
+        return thisReleaseDate.toEpochMilli() > lastReleaseDate
+    }
+}

app/src/gitHubProd/java/me/magnum/melonds/di/GitHubProdModule.kt

@@ -0,0 +1,24 @@
+package me.magnum.melonds.di
+
+import android.content.Context
+import dagger.Module
+import dagger.Provides
+import dagger.hilt.InstallIn
+import dagger.hilt.android.qualifiers.ApplicationContext
+import dagger.hilt.components.SingletonComponent
+import me.magnum.melonds.domain.repositories.UpdatesRepository
+import me.magnum.melonds.github.GitHubApi
+import me.magnum.melonds.github.repositories.GitHubProdUpdatesRepository
+import javax.inject.Singleton
+
+@Module
+@InstallIn(SingletonComponent::class)
+object GitHubProdModule {
+
+    @Provides
+    @Singleton
+    fun provideUpdatesRepository(@ApplicationContext context: Context, gitHubApi: GitHubApi): UpdatesRepository {
+        val gitHubPreferences = context.getSharedPreferences("preferences-github", Context.MODE_PRIVATE)
+        return GitHubProdUpdatesRepository(context, gitHubApi, gitHubPreferences)
+    }
+}

app/src/gitHubProd/java/me/magnum/melonds/github/repositories/GitHubProdUpdatesRepository.kt

@@ -6,17 +6,19 @@ import androidx.core.content.edit
 import androidx.core.net.toUri
 import io.reactivex.Maybe
 import io.reactivex.Single
-import me.magnum.melonds.domain.model.AppUpdate
+import me.magnum.melonds.domain.model.appupdate.AppUpdate
 import me.magnum.melonds.domain.model.Version
 import me.magnum.melonds.domain.repositories.UpdatesRepository
 import me.magnum.melonds.github.GitHubApi
+import me.magnum.melonds.github.PREF_KEY_GITHUB_CHECK_FOR_UPDATES
 import me.magnum.melonds.github.dtos.ReleaseDto
 import me.magnum.melonds.utils.PackageManagerCompat
 import me.magnum.melonds.utils.enumValueOfIgnoreCase
+import java.time.Instant
 import java.util.*
 import java.util.concurrent.TimeUnit
 
-class GitHubUpdatesRepository(private val context: Context, private val api: GitHubApi, private val preferences: SharedPreferences) : UpdatesRepository {
+class GitHubProdUpdatesRepository(private val context: Context, private val api: GitHubApi, private val preferences: SharedPreferences) : UpdatesRepository {
     companion object {
         private const val APK_CONTENT_TYPE = "application/vnd.android.package-archive"
         private const val KEY_SKIP_VERSION = "github_updates_skip_version"
@@ -35,11 +37,13 @@ class GitHubUpdatesRepository(private val context: Context, private val api: Git
                             val apkBinary = release.assets.firstOrNull { it.contentType == APK_CONTENT_TYPE }
                             if (apkBinary != null) {
                                 val update = AppUpdate(
+                                    AppUpdate.Type.PRODUCTION,
                                     apkBinary.id,
                                     apkBinary.url.toUri(),
                                     Version.fromString(release.tagName),
                                     release.body,
-                                    apkBinary.size
+                                    apkBinary.size,
+                                    Instant.parse(release.createdAt),
                                 )
                                 Maybe.just(update)
                             } else {
@@ -61,8 +65,18 @@ class GitHubUpdatesRepository(private val context: Context, private val api: Git
         }
     }
 
+    override fun notifyUpdateDownloaded(update: AppUpdate) {
+        // Do nothing
+    }
+
     private fun shouldCheckUpdates(): Single<Boolean> {
         return Single.create { emitter ->
+            val updateCheckEnabled = preferences.getBoolean(PREF_KEY_GITHUB_CHECK_FOR_UPDATES, true)
+            if (!updateCheckEnabled) {
+                emitter.onSuccess(false)
+                return@create
+            }
+
             val lastCheckUpdateTimestamp = preferences.getLong(KEY_LAST_UPDATE_CHECK, -1)
             if (lastCheckUpdateTimestamp == (-1).toLong()) {
                 emitter.onSuccess(true)

app/src/main/java/me/magnum/melonds/domain/model/AppUpdate.kt

@@ -1,11 +0,0 @@
-package me.magnum.melonds.domain.model
-
-import android.net.Uri
-
-data class AppUpdate(
-    val id: Long,
-    val downloadUri: Uri,
-    val newVersion: Version,
-    val description: String,
-    val binarySize: Long
-)

app/src/main/java/me/magnum/melonds/domain/model/appupdate/AppUpdate.kt

@@ -0,0 +1,21 @@
+package me.magnum.melonds.domain.model.appupdate
+
+import android.net.Uri
+import me.magnum.melonds.domain.model.Version
+import java.time.Instant
+
+data class AppUpdate(
+    val type: Type,
+    val id: Long,
+    val downloadUri: Uri,
+    val newVersion: Version,
+    val description: String,
+    val binarySize: Long,
+    val updateDate: Instant,
+) {
+
+    enum class Type {
+        PRODUCTION,
+        NIGHTLY,
+    }
+}

app/src/main/java/me/magnum/melonds/domain/repositories/UpdatesRepository.kt

@@ -1,10 +1,10 @@
 package me.magnum.melonds.domain.repositories
 
 import io.reactivex.Maybe
-import io.reactivex.Observable
+import me.magnum.melonds.domain.model.appupdate.AppUpdate
-import me.magnum.melonds.domain.model.AppUpdate
 
 interface UpdatesRepository {
     fun checkNewUpdate(): Maybe<AppUpdate>
     fun skipUpdate(update: AppUpdate)
+    fun notifyUpdateDownloaded(update: AppUpdate)
 }

app/src/main/java/me/magnum/melonds/domain/services/UpdateInstallManager.kt

@@ -1,7 +1,7 @@
 package me.magnum.melonds.domain.services
 
 import io.reactivex.Observable
-import me.magnum.melonds.domain.model.AppUpdate
+import me.magnum.melonds.domain.model.appupdate.AppUpdate
 import me.magnum.melonds.domain.model.DownloadProgress
 
 interface UpdateInstallManager {

app/src/main/java/me/magnum/melonds/ui/romlist/RomListActivity.kt

@@ -27,6 +27,7 @@ import me.magnum.melonds.common.Permission
 import me.magnum.melonds.common.contracts.DirectoryPickerContract
 import me.magnum.melonds.databinding.ActivityRomListBinding
 import me.magnum.melonds.domain.model.*
+import me.magnum.melonds.domain.model.appupdate.AppUpdate
 import me.magnum.melonds.ui.dsiwaremanager.DSiWareManagerActivity
 import me.magnum.melonds.ui.emulator.EmulatorActivity
 import me.magnum.melonds.ui.settings.SettingsActivity
@@ -98,7 +99,10 @@ class RomListActivity : AppCompatActivity() {
         }
 
         updatesViewModel.getAppUpdate().observe(this) {
-            showUpdateAvailableDialog(it)
+            when (it.type) {
+                AppUpdate.Type.PRODUCTION -> showProdUpdateAvailableDialog(it)
+                AppUpdate.Type.NIGHTLY -> showNightlyUpdateAvailableDialog(it)
+            }
         }
         updatesViewModel.getDownloadProgress().observe(this) {
             onDownloadProgressUpdated(it)
@@ -199,7 +203,7 @@ class RomListActivity : AppCompatActivity() {
         romListFragment.setRomSelectedListener { rom -> loadRom(rom) }
     }
 
-    private fun showUpdateAvailableDialog(update: AppUpdate) {
+    private fun showProdUpdateAvailableDialog(update: AppUpdate) {
         val message = markwon.toMarkdown(update.description)
 
         AlertDialog.Builder(this)
@@ -215,6 +219,19 @@ class RomListActivity : AppCompatActivity() {
             .show()
     }
 
+    private fun showNightlyUpdateAvailableDialog(update: AppUpdate) {
+        AlertDialog.Builder(this)
+            .setTitle(getString(R.string.nightly_update_available))
+            .setMessage(getString(R.string.nightly_update_available_message))
+            .setPositiveButton(R.string.update) { _, _ ->
+                startUpdateDownload(update)
+            }
+            .setNegativeButton(R.string.remind_later_update) { _, _ ->
+                updatesViewModel.skipUpdate(update)
+            }
+            .show()
+    }
+
     private fun startUpdateDownload(update: AppUpdate) {
         downloadProgressDialog?.dismiss()
         downloadProgressDialog = AlertDialog.Builder(this)

app/src/main/java/me/magnum/melonds/ui/romlist/UpdatesViewModel.kt

@@ -5,7 +5,7 @@ import androidx.lifecycle.ViewModel
 import dagger.hilt.android.lifecycle.HiltViewModel
 import io.reactivex.disposables.CompositeDisposable
 import me.magnum.melonds.common.Schedulers
-import me.magnum.melonds.domain.model.AppUpdate
+import me.magnum.melonds.domain.model.appupdate.AppUpdate
 import me.magnum.melonds.domain.model.DownloadProgress
 import me.magnum.melonds.domain.repositories.UpdatesRepository
 import me.magnum.melonds.domain.services.UpdateInstallManager
@@ -47,6 +47,9 @@ class UpdatesViewModel @Inject constructor(
             .subscribeOn(schedulers.backgroundThreadScheduler)
             .subscribe {
                 updateDownloadProgressLiveData.postValue(it)
+                if (it is DownloadProgress.DownloadComplete) {
+                    updatesRepository.notifyUpdateDownloaded(update)
+                }
             }
             .addTo(disposables)
     }

app/src/main/java/me/magnum/melonds/ui/settings/fragments/GeneralPreferencesFragment.kt

@@ -24,6 +24,7 @@ class GeneralPreferencesFragment : PreferenceFragmentCompat(), PreferenceFragmen
 
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
         setPreferencesFromResource(R.xml.pref_general, rootKey)
+        addPreferencesFromResource(R.xml.pref_general_updates)
 
         rewindPreference = findPreference("enable_rewind")!!
         val sustainedPerformancePreference = findPreference<SwitchPreference>("enable_sustained_performance")!!

app/src/main/res/values/strings.xml

@@ -49,7 +49,10 @@
     <string name="action_refresh_rom_list">Refresh ROM list</string>
     <string name="hint_search_roms">Search ROMs…</string>
     <string name="update_available">Update available: %1$s</string>
+    <string name="nightly_update_available">Nightly update available</string>
+    <string name="nightly_update_available_message">Do you want to download it now?</string>
     <string name="skip_update">Skip</string>
+    <string name="remind_later_update">Later</string>
     <string name="downloading_update">Downloading update…</string>
     <string name="starting_download">Starting download…</string>
     <string name="download_progress_sizes">%1$.1fMB/%2$.1fMB</string>
@@ -148,6 +151,8 @@
     <string name="rewind_memory_usage_above_recommended_limit">Memory usage above recommended limit</string>
     <string name="sustained_performance_mode">Sustained performance mode</string>
     <string name="sustained_performance_mode_summary">When enabled, peak performance will be lower but thermal throttling will be less pronounced.</string>
+    <string name="check_for_updates">Check for updates</string>
+    <string name="check_for_updates_summary">When enabled, the app will periodically check for available updates</string>
     <string name="rom_icon_filtering">Icon filtering</string>
     <string name="max_rom_cache_size">Max. ROM cache size</string>
     <string name="clear_extracted_rom_cache">Clear extracted ROM cache</string>

app/src/main/res/xml/pref_general_updates.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen>
+    <!-- Empty on purpose since not all builds have update options -->
+</PreferenceScreen>

app/src/nightly/res/values/strings.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">melonDS Nightly</string>
+</resources>

app/src/playStore/java/me/magnum/melonds/playstore/PlayStoreUpdatesRepository.kt

@@ -1,7 +1,7 @@
 package me.magnum.melonds.playstore
 
 import io.reactivex.Maybe
-import me.magnum.melonds.domain.model.AppUpdate
+import me.magnum.melonds.domain.model.appupdate.AppUpdate
 import me.magnum.melonds.domain.repositories.UpdatesRepository
 
 class PlayStoreUpdatesRepository : UpdatesRepository {
@@ -12,4 +12,8 @@ class PlayStoreUpdatesRepository : UpdatesRepository {
     override fun skipUpdate(update: AppUpdate) {
         // Do nothing. Update checking not supported in the Play Store version
     }
+
+    override fun notifyUpdateDownloaded(update: AppUpdate) {
+        // Do nothing
+    }
 }

app/src/playStore/java/me/magnum/melonds/services/PlayStoreUpdateInstallManager.kt

@@ -1,8 +1,8 @@
 package me.magnum.melonds.services
 
 import io.reactivex.Observable
-import me.magnum.melonds.domain.model.AppUpdate
 import me.magnum.melonds.domain.model.DownloadProgress
+import me.magnum.melonds.domain.model.appupdate.AppUpdate
 import me.magnum.melonds.domain.services.UpdateInstallManager
 
 class PlayStoreUpdateInstallManager : UpdateInstallManager {