Add github build action

.github/workflows/android.yml

@@ -0,0 +1,55 @@
+name: Build
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ "master" ]
+    tags: [ "*" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+    - name: Set up environment variables
+      run: |
+        echo "GPR_USER=${{ github.actor }}" >> $GITHUB_ENV
+        echo "GPR_KEY=${{ secrets.GITHUB_TOKEN }}" >> $GITHUB_ENV
+        echo "KEY_ALIAS=${{ secrets.KEY_ALIAS }}" >> $GITHUB_ENV
+        echo "KEY_PASSWORD=${{ secrets.KEY_PASSWORD }}" >> $GITHUB_ENV
+        echo "KEYSTORE_PASSWORD=${{ secrets.KEYSTORE_PASSWORD }}" >> $GITHUB_ENV
+        echo "KEYSTORE_BASE64=${{ secrets.KEYSTORE_BASE64 }}" >> $GITHUB_ENV
+
+    - uses: actions/checkout@v4
+    - name: set up JDK 17
+      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 with Gradle
+      run: ./gradlew build
+
+    - name: Archive APK
+      uses: actions/upload-artifact@v4
+      with:
+        name: app-release
+        path: app/build/outputs/apk/release/app-release.apk
+
+    - name: Create Release
+      id: create_release
+      uses: ncipollo/release-action@v1
+      if: startsWith(github.ref, 'refs/tags/')
+      with:
+        name: ${{ github.ref_name }}
+        prerelease: false
+        generateReleaseNotes: true
+        artifacts: app/build/outputs/apk/release/app-release.apk, app/manifest.json, app/karoo-powerbar.png
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

README.md

@@ -1,5 +1,7 @@
 # Karoo Powerbar Extension
 
+[![Build](https://github.com/timklge/karoo-powerbar/actions/workflows/android.yml/badge.svg)](https://github.com/timklge/karoo-powerbar/actions/workflows/android.yml)
+
 Simple karoo extension that shows an overlay power bar at the edge of the screen. For Karoo 2 and Karoo 3 devices.
 
 ![Powerbar](powerbar0.png)

app/build.gradle.kts

@@ -1,3 +1,5 @@
+import java.util.Base64
+
 plugins {
     alias(libs.plugins.android.application)
     alias(libs.plugins.jetbrains.kotlin.android)
@@ -17,9 +19,26 @@ android {
         versionName = "1.2.1"
     }
 
+    signingConfigs {
+        create("release") {
+            val env: MutableMap<String, String> = System.getenv()
+            keyAlias = env["KEY_ALIAS"]
+            keyPassword = env["KEY_PASSWORD"]
+
+            val base64keystore: String = env["KEYSTORE_BASE64"] ?: ""
+            val keystoreFile: File = File.createTempFile("keystore", ".jks")
+            keystoreFile.writeBytes(Base64.getDecoder().decode(base64keystore))
+            storeFile = keystoreFile
+            storePassword = env["KEYSTORE_PASSWORD"]
+        }
+    }
     buildTypes {
-        release {
+        debug {
             isMinifyEnabled = false
+        }
+        release {
+            signingConfig = signingConfigs.getByName("release")
+            // isMinifyEnabled = false
             proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
         }
     }

settings.gradle.kts

@@ -16,8 +16,11 @@ pluginManagement {
         mavenCentral()
     }
 }
-val gprUser = getLocalProperty("gpr.user")
-val gprKey = getLocalProperty("gpr.key")
+
+val env: MutableMap<String, String> = System.getenv()
+val gprUser = if(env.containsKey("GPR_USER")) env["GPR_USER"] else getLocalProperty("gpr.user")
+val gprKey = if(env.containsKey("GPR_KEY")) env["GPR_KEY"] else getLocalProperty("gpr.key")
+
 dependencyResolutionManagement {
     repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
     repositories {