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 1/2] 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

From 32990acb2a3d5c9f7ea2fafc1d38d3debd5fe4ca Mon Sep 17 00:00:00 2001
From: Yahor Berdnikau <egorr.berd@gmail.com>
Date: Sun, 18 Mar 2018 18:13:19 +0100
Subject: [PATCH 2/2] Add assemble release step to build job.

This will check that minification of release is not broken.

Signed-off-by: Yahor Berdnikau <egorr.berd@gmail.com>
---
 .circleci/config.yml | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 367a35bf..59d7bbf1 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -16,6 +16,9 @@ jobs:
       - run:
           name: checkstyle
           command: ./gradlew -Pqc ktlintCheck
+      - run:
+          name: static analysis
+          command: ./gradlew -Pqc detektCheck
       - run:
           name: build
           command: ./gradlew assembleDebug
@@ -29,8 +32,8 @@ jobs:
           name: lint
           command: ./gradlew lint
       - run:
-          name: static analysis
-          command: ./gradlew -Pqc detektCheck
+          name: assemble release build
+          command: ./gradlew assembleRelease
       - save_cache:
           paths:
             - ~/.gradle