// Call the Jira REST API to retrieve all projects
def response = get('/rest/api/3/project')
    .header('Content-Type', 'application/json')
    .asObject(List)

// Check for a successful response
if (response.status != 200) {
    return "Error fetching projects: ${response.status} - ${response.statusText}"
}

// Cast the response body to a List of Maps for static type checking
List<Map> projects = response.body as List<Map>

// Extract project data and map to a simplified structure
return projects.collect { project ->
    [
        id   : project['id'],
        key  : project['key'],
        name : project['name']
    ]
}