import groovy.json.JsonSlurper

def call(String jobName) {
    def jobURL = "http://jenkins-server.default.svc.cluster.local:8080/job/${jobName}/api/json"
    def jenkinsUser = "admin"
    def jenkinsToken = "Knd6GttfuDRZI0r7EkCiPQ"

    // Fetch JSON response from Jenkins API
    def response = sh(script: "curl -s -u '${jenkinsUser}:${jenkinsToken}' ${jobURL}", returnStdout: true).trim()

    // Parse JSON
    def jsonSlurper = new JsonSlurper()
    def jobData = jsonSlurper.parseText(response)

    // Extract first build number
    def firstBuildNumber = jobData.firstBuild?.number

    if (firstBuildNumber == null) {
        error("Pipeline '${jobName}' has **never** run! 🚨 Stopping execution.")
    }

    echo "Pipeline '${jobName}' has **run at least once** ✅ First build number: ${firstBuildNumber}"
    return firstBuildNumber
}