Jira Cloud Scripted Listner to set Assignee based on Select List Field

Set Issue Assignee Based on Select List Field Value.groovy

import groovy.json.JsonOutput
import groovy.json.JsonSlurper

def eventIssue = Issues.getByKey(issue.key as String)
def issueKey = eventIssue.key

// Correctly extract the custom field value
def rawProductArea = eventIssue.getCustomFieldValue("Product Area")
def productAreaValue = rawProductArea instanceof Map ? rawProductArea.value : rawProductArea?.toString()
logger.info("Product Area = ${productAreaValue}")

def productAreaMap = [
    "Marketing - Social Advertising": ["[email protected]"],
    "Marketing - Governance & Workflow Automation": ["[email protected]"]
]

def mapping = productAreaMap[productAreaValue]

if (mapping) {
    def assigneeEmail = mapping[0]
    logger.info("Assignee Email = ${assigneeEmail}")

    // Step 1: Get accountId from email
    def assigneeResp = get("/rest/api/2/user/search")
        .queryString("query", assigneeEmail)
        .asString()

    logger.info("Assignee API Response: ${assigneeResp.body}")

    def parsed = (List) new JsonSlurper().parseText(assigneeResp.body)

    if (parsed && parsed.size() > 0) {
        def accountId = (parsed[0] as Map).accountId
        logger.info("Assignee Account ID: ${accountId}")

        // Step 2: Assign the issue using PUT /issue/{key}/assignee
        def assignResp = put("/rest/api/3/issue/${issueKey}/assignee")
            .header("Content-Type", "application/json")
            .body(JsonOutput.toJson([accountId: accountId]))
            .asString()

        if (assignResp.status == 204) {
            logger.info("✅ Successfully assigned issue to ${assigneeEmail}")
        } else {
            logger.error("❌ Failed to assign issue. Status: ${assignResp.status}, Body: ${assignResp.body}")
        }

    } else {
        logger.warn("No user found for email: ${assigneeEmail}")
    }

} else {
    logger.warn("No mapping found for Product Area: ${productAreaValue}")
}