Fix proguard rules

app/build.gradle

@@ -171,7 +171,10 @@ android {
     debug {
       debuggable true
       ext.enableCrashlytics = false
-      minifyEnabled false
+      minifyEnabled true
+      firebaseCrashlytics {
+        mappingFileUploadEnabled false
+      }
       proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
     }
   }

app/proguard-rules.pro

@@ -34,25 +34,52 @@
 # Retrofit does reflection on generic parameters. InnerClasses is required to use Signature and
 # EnclosingMethod is required to use InnerClasses.
 -keepattributes Signature, InnerClasses, EnclosingMethod
+
 # Retrofit does reflection on method and parameter annotations.
 -keepattributes RuntimeVisibleAnnotations, RuntimeVisibleParameterAnnotations
+
+# Keep annotation default values (e.g., retrofit2.http.Field.encoded).
+-keepattributes AnnotationDefault
+
 # Retain service method parameters when optimizing.
 -keepclassmembers,allowshrinking,allowobfuscation interface * {
     @retrofit2.http.* <methods>;
 }
+
 # Ignore annotation used for build tooling.
 -dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
+
 # Ignore JSR 305 annotations for embedding nullability information.
 -dontwarn javax.annotation.**
+
 # Guarded by a NoClassDefFoundError try/catch and only used when on the classpath.
 -dontwarn kotlin.Unit
+
 # Top-level functions that can only be used by Kotlin.
 -dontwarn retrofit2.KotlinExtensions
+-dontwarn retrofit2.KotlinExtensions$*
+
 # With R8 full mode, it sees no subtypes of Retrofit interfaces since they are created with a Proxy
 # and replaces all potential values with null. Explicitly keeping the interfaces prevents this.
 -if interface * { @retrofit2.http.* <methods>; }
 -keep,allowobfuscation interface <1>
 
+# Keep inherited services.
+-if interface * { @retrofit2.http.* <methods>; }
+-keep,allowobfuscation interface * extends <1>
+
+# With R8 full mode generic signatures are stripped for classes that are not
+# kept. Suspend functions are wrapped in continuations where the type argument
+# is used.
+-keep,allowobfuscation,allowshrinking class kotlin.coroutines.Continuation
+
+# R8 full mode strips generic signatures from return types if not kept.
+-if interface * { @retrofit2.http.* public *** *(...); }
+-keep,allowoptimization,allowshrinking,allowobfuscation class <3>
+
+# With R8 full mode generic signatures are stripped for classes that are not kept.
+-keep,allowobfuscation,allowshrinking class retrofit2.Response
+
 # MPAndroidChart
 -keep class com.github.mikephil.charting.** { *; }