Plug-In: Push Due Dates 24-Hours

Advances the due date of the selected projects or tasks twenty-four hours. Only items with due dates are processed.
TIP: Hold down Shift key when running plug-in to summon preferences dialog:
TIP: For quick access, assign keyboard shortcut or place plug-in in Toolbar
Push Due and Defer Dates 24-Hours
  

/*{
	"type": "action",
	"targets": ["omnifocus"],
	"author": "Otto Automator",
	"identifier": "com.omni-automation.of.push-due-defer-one-day",
	"version": "1.0",
	"description": "Advances the due and defer dates of the selected projects or tasks twenty-four hours. Items without due dates will use the default due time setting applied for tomorrow. Deferment time will be set to 12AM tomorrow for all selected items. TIP: Hold down Shift key when running plug-in to summon preferences dialog.",
	"label": "Push Due & Defer One Day",
	"shortLabel": "Push Due & Defer 24",
	"paletteLabel": "Push Due & Defer 24",
	"image": "24.circle"
}*/
(() => {
	function playSystemAlert(alertFilename){
		if(!alertFilename.endsWith(".aiff")){
			alertFilename = alertFilename + ".aiff"
		}
		alertFilename = alertFilename.charAt(0).toUpperCase() + alertFilename.slice(1)
		sysSoundsFldr = URL.fromString("/System/Library/Sounds/") 
		urlComps = URL.Components.fromURL(sysSoundsFldr, false)
		urlComps.path = alertFilename
		soundFileURL = urlComps.urlRelativeTo(sysSoundsFldr)
		audioAlert = new Audio.Alert(soundFileURL)
		Audio.playAlert(audioAlert)
	}

	var preferences = new Preferences() // NO ID = PLUG-IN ID
	var soundNames = ["Basso",
"Blow", "Bottle", "Frog", "Funk", "Glass", "Hero", "Morse", "Ping", "Pop", "Purr", "Sosumi", "Submarine", "Tink"]

	const action = new PlugIn.Action(async function(selection, sender){
		try {
			storedBoolean = preferences.readBoolean("shouldPlaySound")
			if(storedBoolean === null){
				preferences.write("shouldPlaySound", shouldPlaySound)
				var shouldPlaySound = false
			} else {
				var shouldPlaySound = storedBoolean
			}
			
			storedSoundIndx = preferences.readNumber("confirmationSoundIndx")
			if(storedSoundIndx === null){
				preferences.write("confirmationSoundIndx", 10)
				var storedSoundIndx = 10
				var confirmationSound = "Purr"
			} else {
				var confirmationSound = soundNames[storedSoundIndx]
			}
			
			if(app.shiftKeyDown){
				checkSwitchField = new Form.Field.Checkbox(
					"shouldPlaySound",
					"Play sound after adjusting due and defer dates",
					shouldPlaySound
				)
				
				soundsOptionsMenu = new Form.Field.Option(
					"confirmationSoundIndx", 
					"Confirmation Sound", 
					[0,1,2,3,4,5,6,7,8,9,10,11,12,13], 
					soundNames, 
					storedSoundIndx
				)
				
				inputForm = new Form()
				inputForm.addField(soundsOptionsMenu)
				inputForm.addField(checkSwitchField)
				
				formPrompt = "Plug-in Options:"
				buttonTitle = "Continue"
				formObject = await inputForm.show(formPrompt, buttonTitle)

				booleanValue = formObject.values['shouldPlaySound']
				preferences.write("shouldPlaySound", booleanValue)
				var shouldPlaySound = booleanValue
				
				indx = formObject.values['confirmationSoundIndx']
				preferences.write("confirmationSoundIndx", indx)
				var confirmationSound = soundNames[indx]
			}
			
			// DEFERMENT DATE TIME = TOMORROW MORNING (12AM)
			now = new Date()
			today = Calendar.current.startOfDay(now)
			duration = new DateComponents()
			duration.day = 1
			defermentDateTime = Calendar.current.dateByAddingDateComponents(today, duration)
		
			// DERIVE A DEFAULT DUE DATE/TIME FOR TOMORROW
			defaultDueTime = settings.objectForKey('DefaultDueTime')
			//--> "17:00:00" (5PM)
			console.log("DefaultDueTime", defaultDueTime)
			timeElements = defaultDueTime.split(":")			
			dc = new DateComponents() 
			dc.day = dc.day + 1
			dc.hour = Number(timeElements[0])
			dc.minutes = Number(timeElements[1])
			dc.seconds = Number(timeElements[2])
			defaultDueDate = Calendar.current.dateByAddingDateComponents(today, dc)

			// PROCESS THE SELECTED ITEMS
			selectedItems = selection.databaseObjects
			for (indx in selectedItems){
				item = selectedItems[indx]
				if (item instanceof Project || item instanceof Task){
					if(item.dueDate){
						dc = Calendar.current.dateComponentsFromDate(item.dueDate)
						dc.hour = dc.hour + 24
						newDueDate = Calendar.current.dateFromDateComponents(dc)
						item.dueDate = newDueDate
					} else {
						item.dueDate = defaultDueDate
					}
					// SET DEFERMENT
					item.deferDate = defermentDateTime
				}
			}
			if(shouldPlaySound && Device.current.mac){playSystemAlert(confirmationSound)}
		}
		catch(err){
			if(!err.causedByUserCancelling){
				console.error(err.name, err.message)
				new Alert(err.name, err.message).show()
			}
		}
	});

	action.validate = function(selection, sender){
		// selection options: tasks, projects, folders, tags, databaseObjects, allObjects
		return (selection.tasks.length > 0 || selection.projects.length > 0)
	};
	
	return action;
})();