Add build timestamp as build config field (#1567)

app/build.gradle

@@ -29,10 +29,7 @@ android {
 
         resValue "string", "app_name", "Wulkanowy"
 
-        manifestPlaceholders = [
-                firebase_enabled: project.hasProperty("enableFirebase"),
-                buildTimestamp: String.valueOf(System.currentTimeMillis())
-        ]
+        manifestPlaceholders = [firebase_enabled: project.hasProperty("enableFirebase")]
         javaCompileOptions {
             annotationProcessorOptions {
                 arguments += [
@@ -41,6 +38,12 @@ android {
                 ]
             }
         }
+
+        if (System.env.SET_BUILD_TIMESTAMP) {
+            buildConfigField "long", "BUILD_TIMESTAMP", String.valueOf(System.currentTimeMillis())
+        } else {
+            buildConfigField "long", "BUILD_TIMESTAMP", "1486235849000"
+        }
     }
 
     sourceSets {

app/src/main/AndroidManifest.xml

@@ -153,14 +153,6 @@
                 android:resource="@xml/provider_paths" />
         </provider>
 
-        <meta-data
-            android:name="buildTimestamp"
-            android:value="${buildTimestamp}" />
-
-        <meta-data
-            android:name="install_channel"
-            android:value="${install_channel}" />
-
         <!-- workaround for https://github.com/firebase/firebase-android-sdk/issues/473 enabled:false -->
         <!-- https://firebase.googleblog.com/2017/03/take-control-of-your-firebase-init-on.html -->
         <provider
@@ -170,6 +162,10 @@
             android:exported="false"
             tools:ignore="MissingClass" />
 
+        <meta-data
+            android:name="install_channel"
+            android:value="${install_channel}" />
+
         <meta-data
             android:name="firebase_analytics_collection_enabled"
             android:value="${firebase_enabled}" />

app/src/main/java/io/github/wulkanowy/utils/AppInfo.kt

@@ -1,12 +1,10 @@
 package io.github.wulkanowy.utils
 
-import android.content.Context
-import android.content.pm.PackageManager
 import android.content.res.Resources
 import android.os.Build.MANUFACTURER
 import android.os.Build.MODEL
 import android.os.Build.VERSION.SDK_INT
-import dagger.hilt.android.qualifiers.ApplicationContext
+import io.github.wulkanowy.BuildConfig.BUILD_TIMESTAMP
 import io.github.wulkanowy.BuildConfig.DEBUG
 import io.github.wulkanowy.BuildConfig.FLAVOR
 import io.github.wulkanowy.BuildConfig.VERSION_CODE
@@ -15,21 +13,13 @@ import javax.inject.Inject
 import javax.inject.Singleton
 
 @Singleton
-open class AppInfo @Inject constructor(
-    @ApplicationContext private val context: Context,
-) {
+open class AppInfo @Inject constructor() {
 
     open val isDebug get() = DEBUG
 
     open val versionCode get() = VERSION_CODE
 
-    open val buildTimestamp: Long
-        get() {
-            val info = context.packageManager.getApplicationInfo(
-                context.packageName, PackageManager.GET_META_DATA,
-            )
-            return info.metaData?.getFloat("buildTimestamp")?.toLong() ?: 0
-        }
+    open val buildTimestamp get() = BUILD_TIMESTAMP
 
     open val buildFlavor get() = FLAVOR
 

app/src/test/java/io/github/wulkanowy/data/db/migrations/AbstractMigrationTest.kt

@@ -16,7 +16,7 @@ abstract class AbstractMigrationTest {
 
     val dbName = "migration-test"
 
-    val context: Context get() = ApplicationProvider.getApplicationContext<Context>()
+    val context: Context get() = ApplicationProvider.getApplicationContext()
 
     @get:Rule
     val helper: MigrationTestHelper = MigrationTestHelper(
@@ -33,7 +33,7 @@ abstract class AbstractMigrationTest {
         ).addMigrations(
             *AppDatabase.getMigrations(
                 SharedPrefProvider(PreferenceManager.getDefaultSharedPreferences(context)),
-                AppInfo(context)
+                AppInfo()
             )
         ).build()
         // close the database and release any stream resources when the test finishes

app/src/test/java/io/github/wulkanowy/data/db/migrations/Migration35Test.kt

@@ -29,15 +29,15 @@ class Migration35Test : AbstractMigrationTest() {
             close()
         }
 
-        helper.runMigrationsAndValidate(dbName, 35, true, Migration35(AppInfo(context)))
+        helper.runMigrationsAndValidate(dbName, 35, true, Migration35(AppInfo()))
 
         val db = getMigratedRoomDatabase()
         val students = runBlocking { db.studentDao.loadAll() }
 
         assertEquals(2, students.size)
 
-        assertTrue { students[0].avatarColor in AppInfo(context).defaultColorsForAvatar }
-        assertTrue { students[1].avatarColor in AppInfo(context).defaultColorsForAvatar }
+        assertTrue { students[0].avatarColor in AppInfo().defaultColorsForAvatar }
+        assertTrue { students[1].avatarColor in AppInfo().defaultColorsForAvatar }
     }
 
     private fun createStudent(db: SupportSQLiteDatabase, id: Long) {

app/src/test/java/io/github/wulkanowy/data/repositories/StudentTest.kt

@@ -37,7 +37,7 @@ class StudentTest {
             studentDb = studentDb,
             semesterDb = semesterDb,
             sdk = mockSdk,
-            appInfo = AppInfo(mockk()),
+            appInfo = AppInfo(),
             appDatabase = mockk()
         )
     }