chore: add snapshot publish to travis (#380)

Author: jaeopt

.travis.yml

@@ -8,12 +8,14 @@ env:
   - ANDROID_API=29              # api is same as gradle file
   - ANDROID_BUILD_TOOLS=29.0.3  # should match gradle
   - ADB_INSTALL_TIMEOUT=5       # minutes
-  matrix:
+  - ANDROID_TAG=google_apis
+  - ANDROID_ABI=armeabi-v7a
+  jobs:
   # API 26+ supports "x86" (ANDROID_ABI=x86) emulators only, which are not supported yet in travis VMs
   # so API 24 is the highest level we can run with emulator for now
-  - EMULATOR_API=19 ANDROID_TAG=google_apis ANDROID_ABI=armeabi-v7a    # API-16 build fails in travis
-  - EMULATOR_API=21 ANDROID_TAG=google_apis ANDROID_ABI=armeabi-v7a
-  - EMULATOR_API=24 ANDROID_TAG=google_apis ANDROID_ABI=armeabi-v7a
+  - EMULATOR_API=19    # API-16 build fails in travis
+  - EMULATOR_API=21
+  - EMULATOR_API=24
 
 android:
   components:
@@ -56,7 +58,8 @@ stages:
   - 'Integration tests'
   - 'Test'
   - 'Publish'
-
+  - 'Snapshot'
+  
 jobs:
   include:
     - stage: 'Lint markdown files'
@@ -103,3 +106,8 @@ jobs:
       after_script: skip
       after_success: skip
 
+    - stage: 'Snapshot'
+      if: env(SNAPSHOT) = true and type = api
+      script:
+        - TRAVIS_TAG=BB-SNAPSHOT ./gradlew ship
+      after_success: skip

build.gradle

@@ -23,8 +23,10 @@ buildscript {
     if (version_name != null) {
         rootProject.ext.version_name = version_name
     } else {
-        rootProject.ext.version_name= 'debugVersion'
+        rootProject.ext.version_name = 'debugVersion'
     }
+    ext.is_release_version = !rootProject.ext.version_name.endsWith("SNAPSHOT")
+
     repositories {
         jcenter()
         google()
@@ -191,7 +193,9 @@ configure(publishedProjects) {
             }
             repositories {
                 maven {
-                    url "https://oss.sonatype.org/service/local/staging/deploy/maven2"
+                    def releaseUrl = "https://oss.sonatype.org/service/local/staging/deploy/maven2"
+                    def snapshotUrl = "https://oss.sonatype.org/content/repositories/snapshots"
+                    url = is_release_version ? releaseUrl : snapshotUrl
                     credentials {
                         username System.getenv('MAVEN_CENTRAL_USERNAME')
                         password System.getenv('MAVEN_CENTRAL_PASSWORD')