Display respective label if date is closer to due date in ScriptRunner

[Jeremy Chee]

I'm still learning how to create custom script fields on ScriptRunner (JIRA) and I'm working on this exercise where I am required to query for an issue's due date and display the respective label when it approaches the due date:
- "Green" - 10 days from the due date
- "YELLOW" - over 4 days but less than 10 days away from the due date
- "RED" - less than 4 days from the due date

[Jeremy Chee · Accepted solution]

Here's the solution to my question if anyone is curious 

---

```

import java.time.Duration;

import java.time.LocalDateTime;

import groovy.xml.MarkupBuilder

def dueDateField = issue.getDueDate();

def fieldContent = "";

if(!dueDateField) {

    log.warn("Due date doesn't exist on this item")

    fieldContent = "Due date doesn't exist on this item"

    return;

}

def currDate = LocalDateTime.now();

def daysRemaining = Duration.between(currDate, dueDateField.toLocalDateTime()).toDays();

def messageColour = "";

StringWriter writer = new StringWriter()

def builder = new MarkupBuilder(writer)

log.warn("due date field: $dueDateField, current date: $currDate");

log.warn("difference: $daysRemaining");

if(!dueDateField) {

    // log.warn("Due date doesn't exist on this item")

    fieldContent = "Due date doesn't exist on this item"

    return;

}

if(daysRemaining <= 4) {

    messageColour = "error"

    fieldContent = "You have less than 4 days left till this ticket is due!"

} else if (daysRemaining >= 10) {

    messageColour = "success"

    fieldContent = "There is still $daysRemaining days remaining until this ticket is due."

} else {

    messageColour = "warning"

    fieldContent = "There is only $daysRemaining days remaining until this ticket is due."

}

builder.div(class: "aui-message aui-message-$messageColour shadowed") {

    p(class: 'title') {

        strong("$fieldContent")

    }

}

writer.toString()

```