Add IndraGitExtension#tagNames

Author: jpenilla

indra-git/src/main/java/net/kyori/indra/git/IndraGitExtension.java

@@ -23,6 +23,7 @@
  */
 package net.kyori.indra.git;
 
+import java.util.List;
 import org.eclipse.jgit.lib.ObjectId;
 import org.gradle.api.Action;
 import org.gradle.api.java.archives.Manifest;
@@ -99,6 +100,14 @@ default <V, P extends RepositoryValueSource.Parameters, S extends RepositoryValu
    */
   @NotNull Provider<String> describe();
 
+  /**
+   * Get the names of all tags in the repository.
+   *
+   * @return tag names, or an empty list if the project is not in a git repository or has no tags
+   * @since 4.0.0
+   */
+  @NotNull Provider<List<String>> tagNames();
+
   /**
    * Get the name of the current branch.
    *

indra-git/src/main/java/net/kyori/indra/git/internal/IndraGitExtensionImpl.java

@@ -25,9 +25,11 @@
 
 import java.io.File;
 import java.io.IOException;
+import java.util.List;
 import javax.inject.Inject;
 import net.kyori.indra.git.IndraGitExtension;
 import net.kyori.indra.git.QueryBranch;
+import net.kyori.indra.git.QueryTags;
 import net.kyori.indra.git.RepositoryValueSource;
 import net.kyori.mammoth.Configurable;
 import org.eclipse.jgit.api.Git;
@@ -128,6 +130,12 @@ public static abstract class QueryDescribe extends RepositoryValueSource.Paramet
     return this.repositoryValue(QueryDescribe.class);
   }
 
+  @Override
+  public @NotNull Provider<List<String>> tagNames() {
+    return this.repositoryValue(QueryTags.Names.class)
+      .map(list -> list.stream().map(Repository::shortenRefName).toList());
+  }
+
   @Override
   public @NotNull Provider<String> branchName() {
     return this.repositoryValue(QueryBranch.Name.class).map(Repository::shortenRefName);