replace latestNonAlphaVersion with latestStableVersion

plugins/src/main/java/com/google/firebase/gradle/bomgenerator/GenerateTutorialBundleTask.kt

@@ -195,7 +195,7 @@ abstract class GenerateTutorialBundleTask : DefaultTask() {
     } else {
       logger.info("Fetching the latest version for an artifact: $fullArtifactName")
 
-      return gmaven.get().latestNonAlphaVersionOrNull(fullArtifactName)
+      return gmaven.get().latestStableVersionOrNull(fullArtifactName)
         ?: throw RuntimeException(
           "An artifact required for the tutorial bundle is missing from gmaven: $fullArtifactName"
         )

plugins/src/main/java/com/google/firebase/gradle/plugins/services/GmavenService.kt

@@ -151,34 +151,36 @@ abstract class GMavenService : BuildService<BuildServiceParameters.None> {
     controller.latestVersionOrNull(groupId, artifactId)
 
   /**
-   * Gets the latest non-alpha version of the artifact that has been uploaded to GMaven, if any.
+   * Gets the latest version with no qualifiers of the artifact that has been uploaded to GMaven, if
+   * any. *
    *
    * ```
-   * gmaven.latestNonAlphaVersionOrNull("com.google.firebase", "firebase-components") // "18.0.1"
+   * gmaven.latestStableVersionOrNull("com.google.firebase", "firebase-components") // "18.0.1"
    * ```
    *
    * @param groupId The group to search under.
    * @param artifactId The artifact to search for.
    * @return The latest released version as a string, or null if the artifact couldn't be found.
    * @see latestVersion
    */
-  fun latestNonAlphaVersionOrNull(groupId: String, artifactId: String) =
-    controller.latestNonAlphaVersionOrNull(groupId, artifactId)
+  fun latestStableVersionOrNull(groupId: String, artifactId: String) =
+    controller.latestStableVersionOrNull(groupId, artifactId)
 
   /**
-   * Gets the latest non-alpha version of the artifact that has been uploaded to GMaven, if any.
+   * Gets the latest version with no qualifiers of the artifact that has been uploaded to GMaven, if
+   * any.
    *
    * ```
-   * gmaven.latestNonAlphaVersionOrNull("com.google.firebase", "firebase-components") // "18.0.1"
+   * gmaven.latestStableVersionOrNull("com.google.firebase", "firebase-components") // "18.0.1"
    * ```
    *
    * @param fullArtifactName The artifact to search for, represented as "groupId:artifactId".
    * @return The latest released version as a string, or null if the artifact couldn't be found.
    * @see latestVersion
    */
-  fun latestNonAlphaVersionOrNull(fullArtifactName: String): String? {
+  fun latestStableVersionOrNull(fullArtifactName: String): String? {
     val (groupId, artifactId) = fullArtifactName.split(":")
-    return latestNonAlphaVersionOrNull(groupId, artifactId)
+    return latestStableVersionOrNull(groupId, artifactId)
   }
 
   /**
@@ -434,9 +436,9 @@ class GMavenServiceController(
     return findFirebaseArtifact(groupId, artifactId)?.latestVersion
   }
 
-  /** @see GMavenService.latestNonAlphaVersionOrNull */
-  fun latestNonAlphaVersionOrNull(groupId: String, artifactId: String): String? {
-    return findFirebaseArtifact(groupId, artifactId)?.latestNonAlphaVersion
+  /** @see GMavenService.latestStableVersionOrNull */
+  fun latestStableVersionOrNull(groupId: String, artifactId: String): String? {
+    return findFirebaseArtifact(groupId, artifactId)?.latestStableVersion
   }
 
   /** @see GMavenService.hasReleasedArtifact */
@@ -591,7 +593,7 @@ data class GroupIndexArtifact(
   val artifactId: String,
   val versions: List<String>,
   val latestVersion: String = versions.last(),
-  val latestNonAlphaVersion: String? = versions.findLast { !it.contains("alpha") },
+  val latestStableVersion: String? = versions.findLast { !it.contains("-") },
 ) {
 
   /**

plugins/src/test/kotlin/com/google/firebase/gradle/plugins/GenerateTutorialBundleTests.kt

@@ -242,7 +242,7 @@ class GenerateTutorialBundleTests : FunSpec() {
   @Test
   fun `throws an error if an unreleased artifact is used`() {
     shouldThrowSubstring("missing from gmaven", "com.google.firebase:firebase-auth") {
-      every { service.latestNonAlphaVersionOrNull(any()) } answers { null }
+      every { service.latestStableVersionOrNull(any()) } answers { null }
 
       val task = makeTask { firebaseArtifacts.set(listOf("com.google.firebase:firebase-auth")) }
 
@@ -294,7 +294,7 @@ class GenerateTutorialBundleTests : FunSpec() {
         "$groupId:$artifactId" to version
       }
       .onEach { entry ->
-        every { service.latestNonAlphaVersionOrNull(entry.key) } answers { entry.value }
+        every { service.latestStableVersionOrNull(entry.key) } answers { entry.value }
       }
   }