Update singing script

Author: ShiftHackZ

app/app.gradle

@@ -28,27 +28,19 @@ android {
         buildConfigField "String", "SETUP_INSTRUCTIONS_URL", "\"https://github.com/AUTOMATIC1111/stable-diffusion-webui/wiki\""
     }
 
-    signingConfigs {
-        release {
-            def tmpFilePath = System.getProperty("user.home") + "/work/_temp/keystore/"
-            def allFilesFromDir = new File(tmpFilePath).listFiles()
+    if (new File("keystore/signing.properties").exists()) {
+        Properties props = new Properties()
+        props.load(new FileInputStream(file("signing.properties")))
 
-            if (allFilesFromDir != null) {
-                def keystoreFile = allFilesFromDir.first()
-                keystoreFile.renameTo("keystore/aisdv1.jks")
+        signingConfigs {
+            release {
+                storeFile file(props['keystore'])
+                storePassword props['keystore.password']
+                keyAlias props['keystore.alias']
+                keyPassword props['keystore.password']
             }
-
-            storeFile = file("keystore/aisdv1.jks")
-            storePassword System.getenv("AISDV1_STORE_PASSWORD")
-            keyAlias System.getenv("AISDV1_KEY_ALIAS")
-            keyPassword System.getenv("AISDV1_KEY_PASSWORD")
-        }
-    }
-
-    buildTypes {
-        release {
-            signingConfig signingConfigs.release
         }
+        buildTypes.release.signingConfig = signingConfigs.release
     }
 
     flavorDimensions "type"