build.gradle: Refactor to allow platform signing for debug builds

.gitignore

@@ -1,6 +1,7 @@
 *.iml
 .gradle
 /local.properties
+/keystore.properties
 /.idea/caches
 /.idea/libraries
 /.idea/modules.xml

.idea/misc.xml

@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="DesignSurface">
     <option name="filePathToZoomLevelMap">

app/build.gradle

@@ -3,6 +3,39 @@ plugins {
     id 'org.jetbrains.kotlin.android'
 }
 
+def getVersionCode = { ->
+    try {
+        def stdout = new ByteArrayOutputStream()
+        exec {
+            commandLine 'git', 'rev-list', '--first-parent', '--count', 'master'
+            standardOutput = stdout
+        }
+        return Integer.parseInt(stdout.toString().trim())
+    }
+    catch (ignored) {
+        return -1;
+    }
+}
+
+def getVersionName = { ->
+    try {
+        def stdout = new ByteArrayOutputStream()
+        exec {
+            commandLine 'git', 'describe', '--always', '--tags', '--dirty'
+            standardOutput = stdout
+        }
+        return stdout.toString().trim()
+    }
+    catch (ignored) {
+        return null;
+    }
+}
+
+// Signing config, mainly intended for debug builds
+def keystorePropertiesFile = rootProject.file("keystore.properties");
+def keystoreProperties = new Properties()
+keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
+
 android {
     compileSdk 31
 
@@ -10,16 +43,28 @@ android {
         applicationId "im.angry.openeuicc"
         minSdk 30
         targetSdk 31
-        versionCode 1
-        versionName "1.0"
+        versionCode getVersionCode()
+        versionName getVersionName()
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
 
+    signingConfigs {
+        config {
+            storeFile file(keystoreProperties['storeFile'])
+            storePassword keystoreProperties['storePassword']
+            keyAlias keystoreProperties['keyAlias']
+            keyPassword keystoreProperties['keyPassword']
+        }
+    }
     buildTypes {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+            signingConfig signingConfigs.config
+        }
+        debug {
+            signingConfig signingConfigs.config
         }
     }
     compileOptions {