Publish snapshot on maven for testing the java-libkiwix

* Introduce publish_snapshot.yml for uploading the snapshot artifact on the mavenCentral.
* We have added the `SNAPSHOT` env variable in publish_snapshot.yml and match it our code if found then it means this workflow triggered to publish the snapshot on maven so on behalf of this we have rectify our code.

.github/workflows/publish_snapshot.yml

@@ -0,0 +1,41 @@
+name: Publish Snapshot to Maven
+
+on:
+  push:
+    branches:
+      - main
+    tags-ignore:
+      - '*'
+
+jobs:
+  publish:
+    runs-on: ubuntu-20.04
+
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 1
+
+      - name: Set up JDK 11
+        uses: actions/setup-java@v2
+        with:
+          distribution: adopt
+          java-version: 11
+
+      - name: Install dependencies
+        run: bash ./install_deps.sh
+
+      - name: Compile and prepare package
+        run: |
+          ./gradlew buildHeaders build assemble androidSourcesJar
+
+      - name: Publish Snapshot to MavenCentral
+        run: ./gradlew publishReleasePublicationToSonatypeRepository --max-workers 1 closeAndReleaseSonatypeStagingRepository
+        env:
+          OSSRH_USERNAME: ${{ secrets.OSSRH_USERNAME }}
+          OSSRH_PASSWORD: ${{ secrets.OSSRH_PASSWORD }}
+          SIGNING_KEY_ID: ${{ secrets.SIGNING_KEY_ID }}
+          SIGNING_PASSWORD: ${{ secrets.SIGNING_PASSWORD }}
+          SIGNING_KEY: ${{ secrets.SIGNING_KEY }}
+          SONATYPE_STAGING_PROFILE_ID: ${{ secrets.SONATYPE_STAGING_PROFILE_ID }}
+          SNAPSHOT: true

build.gradle

@@ -20,20 +20,3 @@ apply plugin: 'io.github.gradle-nexus.publish-plugin'
 task clean(type: Delete) {
     delete rootProject.buildDir
 }
-
-Properties properties = new Properties()
-if (rootProject.file("local.properties").exists()) {
-    properties.load(rootProject.file("local.properties").newDataInputStream())
-}
-// Publish to Maven Central
-nexusPublishing {
-    repositories {
-        sonatype {
-            stagingProfileId = properties.getProperty("sonatypeStagingProfileId", System.getenv('SONATYPE_STAGING_PROFILE_ID'))
-            username = properties.getProperty("ossrhUsername", System.getenv('OSSRH_USERNAME'))
-            password = properties.getProperty("ossrhPassword", System.getenv('OSSRH_PASSWORD'))
-            nexusUrl.set(uri("https://s01.oss.sonatype.org/service/local/"))
-            snapshotRepositoryUrl.set(uri("https://s01.oss.sonatype.org/content/repositories/snapshots/"))
-    }
-}
-}

lib/build.gradle

@@ -15,6 +15,7 @@ ext["key"] = properties.getProperty("signing.key", System.getenv('SIGNING_KEY'))
 ext["ossrhUsername"] = properties.getProperty("ossrhUsername", System.getenv('OSSRH_USERNAME'))
 ext["ossrhPassword"] = properties.getProperty("ossrhPassword", System.getenv('OSSRH_PASSWORD'))
 ext["sonatypeStagingProfileId"] = properties.getProperty("sonatypeStagingProfileId", System.getenv('SONATYPE_STAGING_PROFILE_ID'))
+ext["snapshot"] = System.getenv('SNAPSHOT') ?: false
 
 ext {
     set("GROUP_ID", "org.kiwix.libkiwix")
@@ -22,6 +23,30 @@ ext {
     set("VERSION", "1.0.0")
 }
 
+if (snapshot) {
+    ext["VERSION_CODE"] = VERSION + "-SNAPSHOT"
+} else {
+    ext["VERSION_CODE"] = VERSION
+}
+
+// Publish to Maven Central
+nexusPublishing {
+    useStaging.set(provider {
+        def release = publishing.publications.release
+        release.version.endsWith("-SNAPSHOT")
+    })
+    repositories {
+        sonatype {
+            stagingProfileId = properties.getProperty("sonatypeStagingProfileId", System.getenv('SONATYPE_STAGING_PROFILE_ID'))
+            username = properties.getProperty("ossrhUsername", System.getenv('OSSRH_USERNAME'))
+            password = properties.getProperty("ossrhPassword", System.getenv('OSSRH_PASSWORD'))
+            version = VERSION_CODE
+            nexusUrl.set(uri("https://s01.oss.sonatype.org/service/local/"))
+            snapshotRepositoryUrl.set(uri("https://s01.oss.sonatype.org/content/repositories/snapshots/"))
+        }
+    }
+}
+
 // Replace these versions with the latest available versions of libkiwix and libzim
 ext.libkiwix_version = "12.0.0"
 ext.libzim_version = "8.2.0"

lib/publish.gradle

@@ -22,7 +22,7 @@ def siteUrl = 'https://www.kiwix.org/en/'
 def gitUrl = 'https://github.com/kiwix/libkiwix.git'
 
 group = GROUP_ID
-version = VERSION
+version = VERSION_CODE
 
 afterEvaluate {
     publishing {
@@ -31,7 +31,7 @@ afterEvaluate {
 
                 groupId GROUP_ID
                 artifactId ARTIFACT_ID
-                version VERSION
+                version VERSION_CODE
 
                 from components.release
 
@@ -61,15 +61,6 @@ afterEvaluate {
                 }
             }
         }
-        repositories {
-            maven {
-                url = uri("https://s01.oss.sonatype.org/service/local/staging/deploy/maven2/")
-                credentials {
-                    username = ossrhUsername
-                    password = ossrhPassword
-                }
-            }
-        }
     }
 }