Add build workflow for GitHub Actions

Include Git hash in debug version name and detailed APK file name

.github/workflows/auto-build.yml

@@ -0,0 +1,44 @@
+name: "Auto Build"
+
+on:
+  push:
+    branches:
+      - "main"
+    paths:
+      - "app/**"
+      - "build.gradle.kts"
+      - "gradle.properties"
+      - "settings.gradle.kts"
+      - "!**/.gitignore"
+      - "!app/src/*[Tt]est/**"
+
+jobs:
+  build:
+    runs-on: "ubuntu-latest"
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up JDK
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+          cache: 'gradle'
+
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+
+      - name: Build Debug APK
+        id: build-debug
+        run: ./gradlew assembleDebug
+
+      - name: Automatic Releases
+        uses: marvinpinto/action-automatic-releases@latest
+        if: ${{ steps.build-debug.outcome == 'success' }}
+        with:
+          repo_token: "${{ secrets.GITHUB_TOKEN }}"
+          automatic_release_tag: "latest"
+          prerelease: true
+          title: "Auto build [debug]"
+          files: 'app/build/outputs/apk/**/*.apk'

app/build.gradle.kts

@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+import com.android.build.gradle.internal.api.BaseVariantOutputImpl
+import java.io.ByteArrayOutputStream
 import java.io.FileInputStream
 import java.util.*
 
@@ -30,6 +32,15 @@ if (keystorePropertiesFile.exists()) {
 	keystoreProperties.load(FileInputStream(keystorePropertiesFile))
 }
 
+val gitCommitHash by lazy {
+	val stdout = ByteArrayOutputStream()
+	exec {
+		commandLine("git", "rev-parse", "--short", "HEAD")
+		standardOutput = stdout
+	}
+	stdout.toString().trim()
+}
+
 android {
 	namespace = "com.pilot51.voicenotify"
 	compileSdk = 33
@@ -71,7 +82,14 @@ android {
 			signingConfig = signingConfigs.getByName("release")
 		}
 		getByName("debug") {
-			versionNameSuffix = "-debug"
+			versionNameSuffix = "-debug [$gitCommitHash]"
+		}
+	}
+
+	applicationVariants.all {
+		outputs.all {
+			this as BaseVariantOutputImpl
+			outputFileName = "VoiceNotify_v${defaultConfig.versionName}-${name}_$gitCommitHash.apk"
 		}
 	}
 }