From 0496b94aa8ca12db5282e4a573065909fe489126 Mon Sep 17 00:00:00 2001
From: Harsh Shandilya <me@msfjarvis.dev>
Date: Tue, 5 Jun 2018 19:54:53 +0530
Subject: build: Allow building release artifacts in-tree

This change avoids all need for changing any file under
VCS to insert signing keys and configs for release builds.

Example contents of keystore.properties

```
// Location of keystore, relative to module build.gradle,
// in this case, of the app module
storeFile=../wireguard.jks
storePassword=b3ty0uc4nth4xxth1s
keyAlias=wireguard
keyPassword=4ndr01dsux
```

Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>
---
 .gitignore       |  2 ++
 app/build.gradle | 26 ++++++++++++++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/.gitignore b/.gitignore
index 74325146..3dde301c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,5 @@ build/
 *.class
 *.dex
 *.iml
+*.jks
+keystore.properties
diff --git a/app/build.gradle b/app/build.gradle
index 7284eafd..00f4cb10 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,5 +1,9 @@
 apply plugin: 'com.android.application'
 
+// Create a variable called keystorePropertiesFile, and initialize it to your
+// keystore.properties file, in the rootProject folder.
+final def keystorePropertiesFile = rootProject.file("keystore.properties")
+
 android {
     buildToolsVersion '27.0.3'
     compileOptions {
@@ -17,6 +21,28 @@ android {
         versionCode 422
         versionName '0.0.20180605'
     }
+    // If the keystore file exists
+    if (keystorePropertiesFile.exists()) {
+        // Initialize a new Properties() object called keystoreProperties.
+        final def keystoreProperties = new Properties()
+
+        // Load your keystore.properties file into the keystoreProperties object.
+        keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
+
+        signingConfigs {
+            release {
+                keyAlias keystoreProperties['keyAlias']
+                keyPassword keystoreProperties['keyPassword']
+                storeFile file(keystoreProperties['storeFile'])
+                storePassword keystoreProperties['storePassword']
+            }
+        }
+    }
+    buildTypes {
+        release {
+            if (keystorePropertiesFile.exists()) signingConfig signingConfigs.release
+        }
+    }
     externalNativeBuild {
         cmake {
             path 'tools/CMakeLists.txt'
-- 
cgit v1.2.3-59-g8ed1b