From 7bf39ca87786d5a594e869a318f58206f0f37475 Mon Sep 17 00:00:00 2001
From: Yahor Berdnikau <egorr.berd@gmail.com>
Date: Sun, 18 Mar 2018 18:09:42 +0100
Subject: [PATCH] Enable minification for release build.

This reduces result apk size around 2x times.

Signed-off-by: Yahor Berdnikau <egorr.berd@gmail.com>
---
 ultrasonic/build.gradle                 |  7 +++++--
 ultrasonic/minify/proguard-jackson.pro  | 11 +++++++++++
 ultrasonic/minify/proguard-okhttp.pro   |  8 ++++++++
 ultrasonic/minify/proguard-retrofit.pro | 10 ++++++++++
 4 files changed, 34 insertions(+), 2 deletions(-)
 create mode 100644 ultrasonic/minify/proguard-jackson.pro
 create mode 100644 ultrasonic/minify/proguard-okhttp.pro
 create mode 100644 ultrasonic/minify/proguard-retrofit.pro

diff --git a/ultrasonic/build.gradle b/ultrasonic/build.gradle
index 1a0b385c..27ecb88d 100644
--- a/ultrasonic/build.gradle
+++ b/ultrasonic/build.gradle
@@ -19,8 +19,11 @@ android {
 
     buildTypes {
         release {
-            minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
+            minifyEnabled true
+            proguardFiles getDefaultProguardFile('proguard-android.txt'),
+                    'minify/proguard-okhttp.pro',
+                    'minify/proguard-retrofit.pro',
+                    'minify/proguard-jackson.pro'
         }
         debug {
             minifyEnabled false
diff --git a/ultrasonic/minify/proguard-jackson.pro b/ultrasonic/minify/proguard-jackson.pro
new file mode 100644
index 00000000..e5caeef8
--- /dev/null
+++ b/ultrasonic/minify/proguard-jackson.pro
@@ -0,0 +1,11 @@
+#### From Jackson
+
+-keepattributes *Annotation*,EnclosingMethod,Signature
+-keepnames class com.fasterxml.jackson.** {
+*;
+}
+-keepnames interface com.fasterxml.jackson.** {
+    *;
+}
+-dontwarn com.fasterxml.jackson.databind.**
+-keep class org.codehaus.** { *; }
diff --git a/ultrasonic/minify/proguard-okhttp.pro b/ultrasonic/minify/proguard-okhttp.pro
new file mode 100644
index 00000000..f0cdf30c
--- /dev/null
+++ b/ultrasonic/minify/proguard-okhttp.pro
@@ -0,0 +1,8 @@
+#### From okhttp
+
+-dontwarn okhttp3.**
+-dontwarn okio.**
+-dontwarn javax.annotation.**
+-dontwarn org.conscrypt.**
+# A resource is loaded with a relative path so the package of this class must be preserved.
+-keepnames class okhttp3.internal.publicsuffix.PublicSuffixDatabase
diff --git a/ultrasonic/minify/proguard-retrofit.pro b/ultrasonic/minify/proguard-retrofit.pro
new file mode 100644
index 00000000..f6dd5b8f
--- /dev/null
+++ b/ultrasonic/minify/proguard-retrofit.pro
@@ -0,0 +1,10 @@
+#### From retrofit
+
+# Retain generic type information for use by reflection by converters and adapters.
+-keepattributes Signature
+# Retain service method parameters.
+-keepclassmembernames,allowobfuscation interface * {
+    @retrofit2.http.* <methods>;
+}
+# Ignore annotation used for build tooling.
+-dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement