How can I write a script in Scriptrunner to check if there is a user assigned to a ticket and if not

Eric Blumberg

// Check if ticket is assigned to a user

// -- If not, check that the user has the assignable user permission

// ----- If they do, assign it to the current user

if (issue.fields.assignee != null) {

//Set assignee here,

Nir Haimov

def issueKey = 'AAA-111111'

def result = get('/rest/api/2/issue/' + issueKey + '?fields=assignee')
   .header('Content-Type', 'application/json')
   .asObject(Map)
if (result.status == 200){
   if (result.body.fields['assignee'] == null) {
      def put = put('/rest/api/2/issue/' + issueKey)
         .header('Content-Type', 'application/json')
         .body([
            fields:[
               assignee: [
                   id: 'admin'
               ]
            ]
         ])
     .asString()
   if (put.status == 204) {
     return 'Success'
   } else {
     return "${put.status}: ${put.body}"
   }
  }
} else {
 return "Failed to find issue: Status: ${result.status} ${result.body}"
}