Add github labels API wrappers

Change-Id: I8312f521b958323529fa0eb5b582085460e585aa
Signed-off-by: Sandu Postaru <sandu.postaru@thalesgroup.com>

vars/github.groovy

@@ -1,5 +1,5 @@
 def isPullRequest() {
-  return "${BRANCH_NAME}".contains('PR-');
+  return "${BRANCH_NAME}".contains('PR-')
 }
 
 def getPullRequestId() {
@@ -54,3 +54,85 @@ def buildAbortedComment() {
 
   pullRequestComment(message)
 }
+
+def private isDraftCommit() {
+  def commitMsg = sh (script: 'git log -1 --pretty=%B ${GIT_COMMIT}', returnStdout: true).trim()
+
+  return commitMsg.contains("DRAFT")
+}
+
+def private getExistingLabels() {
+  def pullRequestId = getPullRequestId()
+  def projectName = getProjectName()
+  def apiURL = "https://api.github.com/repos/eclipse/${projectName}/issues/${pullRequestId}/labels"
+	def labels = ""
+
+  withCredentials([string(credentialsId: '0dea5761-867c-44db-92fa-9304c81a8653', variable: 'password')]) {
+    def script = """curl ${apiURL} -u "eclipse-capella-bot:${password}" -H "Content-Type: application/json" """
+
+    labels = sh(script: "${script}", returnStdout: true)
+  }
+
+  return labels
+}
+
+def private getCustomLabels() {
+  return ['build-aborted', 'build-unstable', 'build-failed', 'build-successfull', 'build-started']
+}
+
+def private removeLabel(label) {
+  def pullRequestId = getPullRequestId()
+  def projectName = getProjectName()
+  def apiURL = "https://api.github.com/repos/eclipse/${projectName}/issues/${pullRequestId}/labels/${label}"
+
+  withCredentials([string(credentialsId: '0dea5761-867c-44db-92fa-9304c81a8653', variable: 'password')]) {
+		sh """curl ${apiURL} -X DELETE -u "eclipse-capella-bot:${password}" -H "Content-Type: application/json" """
+  }
+}
+
+def removeCustomPullRequestLabels() {
+  def pullRequestId = getPullRequestId()
+  def projectName = getProjectName()
+  def existingLabels = getExistingLabels()
+  def customLabels = getCustomLabels()
+
+  customLabels.each {
+    if(existingLabels.contains("${it}")) {
+      removeLabel("${it}")
+    }
+  }
+}
+
+def private addPullRequestLabel(label) {
+  def pullRequestId = getPullRequestId()
+  def projectName = getProjectName()
+  def apiURL = "https://api.github.com/repos/eclipse/${projectName}/issues/${pullRequestId}/labels"
+
+  withCredentials([string(credentialsId: '0dea5761-867c-44db-92fa-9304c81a8653', variable: 'password')]) {
+  	sh """curl ${apiURL} --data '{"labels":["${label}"]}' -u "eclipse-capella-bot:${password}" --request POST -H "Content-Type: application/json" """
+  }
+}
+
+def buildStartedLabel() {
+  addPullRequestLabel('build-started')
+}
+
+def buildSuccessfullLabel() {
+  addPullRequestLabel('build-successfull')
+}
+
+def buildFailedLabel() {
+	addPullRequestLabel('build-failed')
+}
+
+def buildUnstableLabel() {
+  addPullRequestLabel('build-unstable')
+}
+
+def buildAbortedLabel() {
+  addPullRequestLabel('build-aborted')
+}
+
+def removeBuildStartedLabel() {
+  removeLabel('build-started')
+}