release setup

app/build.gradle

@@ -2,16 +2,20 @@ plugins {
     id 'com.android.application'
     id 'org.jetbrains.kotlin.android'
 }
+// custom properties
+def applicationIdArgument = project.findProperty('applicationId')
+def applicationVersionCodeArgument = project.findProperty('versionCode')?.isInteger() ? project.findProperty('versionCode')?.toInteger() : null
+def useDebugSigningForReleaseBuild = project.findProperty('useDebugSigningForReleaseBuild')?.toBoolean() ?: false
 
 android {
     namespace 'org.fnives.android.qrcodetransfer'
     compileSdk 34
 
     defaultConfig {
-        applicationId "org.fnives.android.qrcodetransfer"
+        applicationId applicationIdArgument ?: "org.fnives.android.qrcodetransfer"
         minSdk 26
         targetSdk 34
-        versionCode 1
+        versionCode applicationVersionCodeArgument ?: 1
         versionName "1.0"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
@@ -20,9 +24,29 @@ android {
         }
     }
 
+    signingConfigs {
+        debug {
+            storeFile file('debug.keystore')
+            storePassword 'android'
+            keyAlias 'androiddebugkey'
+            keyPassword 'android'
+        }
+        release {
+            storeFile file(System.getenv("BROQROLI_KEYSTORE") ?: 'debug.keystore')
+            keyAlias System.getenv("BROQROLI_KEY") ?: ''
+            keyPassword System.getenv("BROQROLI_KEY_PASS") ?: ''
+            storePassword System.getenv("BROQROLI_PASS") ?: ''
+        }
+    }
+
     buildTypes {
         release {
-            minifyEnabled false
+            if (useDebugSigningForReleaseBuild) {
+                signingConfig signingConfigs.debug
+            } else {
+                signingConfig signingConfigs.release
+            }
+            minifyEnabled true
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }