Add get-commits-list-api (#2470)

src/main/scala/gitbucket/core/controller/api/ApiRepositoryCommitControllerBase.scala

@@ -9,6 +9,7 @@ import gitbucket.core.util.JGitUtil.CommitInfo
 import gitbucket.core.util.{JGitUtil, ReferrerAuthenticator, RepositoryName}
 import org.eclipse.jgit.api.Git
 import org.eclipse.jgit.revwalk.RevWalk
+import scala.jdk.CollectionConverters._
 import scala.util.Using
 
 trait ApiRepositoryCommitControllerBase extends ControllerBase {
@@ -17,6 +18,33 @@ trait ApiRepositoryCommitControllerBase extends ControllerBase {
    * i. List commits on a repository
    * https://developer.github.com/v3/repos/commits/#list-commits-on-a-repository
    */
+  get("/api/v3/repos/:owner/:repository/commits")(referrersOnly { repository =>
+    val owner = repository.owner
+    val name = repository.name
+    // TODO: The following parameters need to be implemented. [:path, :author, :since, :until]
+    val sha = if (request.body.nonEmpty) (parse(request.body) \ "sha").extract[String] else "refs/heads/master";
+    Using.resource(Git.open(getRepositoryDir(owner, name))) {
+      git =>
+        val repo = git.getRepository
+        Using.resource(new RevWalk(repo)) {
+          revWalk =>
+            val objectId = repo.resolve(sha)
+            revWalk.markStart(revWalk.parseCommit(objectId))
+            JsonFormat(revWalk.asScala.take(30).map {
+              commit =>
+                val commitInfo = new CommitInfo(commit)
+                ApiCommits(
+                  repositoryName = RepositoryName(repository),
+                  commitInfo = commitInfo,
+                  diffs = JGitUtil.getDiffs(git, commitInfo.parents.headOption, commitInfo.id, false, true),
+                  author = getAccount(commitInfo.authorName, commitInfo.authorEmailAddress),
+                  committer = getAccount(commitInfo.committerName, commitInfo.committerEmailAddress),
+                  commentCount = getCommitComment(repository.owner, repository.name, commitInfo.id.toString).size
+                )
+            })
+        }
+    }
+  })
 
   /*
    * ii. Get a single commit