Plug-In: Schedule Medication

This plug-in will create a project with sequential tasks for tracking doses during the course of a medication.
NOTE: The OmniFocus Voice Commands Collection contains a matching voice command for this plug-in.
Schedule Medication
  

/*{
	"type": "action",
	"targets": ["omnifocus"],
	"author": "Otto Automator",
	"identifier": "com.omni-automation.of.schedule-medication-course",
	"version": "1.2",
	"description": "Creates a project with sequential tasks for tracking the course of a medication.",
	"label": "Schedule Medication",
	"shortLabel": "Schedule Medication",
	"paletteLabel": "Schedule Medication",
	"image": "calendar.badge.clock"
}*/
(() => {
	const action = new PlugIn.Action(async function(selection, sender){
		try {
			projectTitleField = new Form.Field.String(
				"projectTitle",
				"Medication Name",
				null,
				null
			)

			startDayMenu = new Form.Field.Option(
				"startDay", 
				"Start", 
				["Today", "Tomorrow"], 
				["Today", "Tomorrow"], 
				"Today"
			)

			times = ["1:00", "2:00", "3:00", "4:00", "5:00", "6:00", "7:00", "8:00", "9:00", "10:00", "11:00", "12:00"]
			timeIndexes = times.map((item, index) => index)
			timesMenu = new Form.Field.Option(
				"startTime", 
				"Initial Dose", 
				times, 
				times, 
				"1:00"
			)

			meridiemMenu = new Form.Field.Option(
				"meridiemOption", 
				"AM/PM", 
				["AM", "PM"], 
				["AM", "PM"], 
				"AM"
			)

			courseDurationMenu = new Form.Field.Option(
				"courseDuration", 
				"Number of Days", 
				["5", "7", "10", "12", "28", "30"], 
				["5", "7", "10", "12", "28", "30"], 
				"7"
			)

			timesPerDayMenu = new Form.Field.Option(
				"timesPerDay", 
				"Times per Day", 
				["1", "2", "3", "4"], 
				["1", "2", "3", "4"], 
				"1"
			)

			inputForm = new Form()
			inputForm.addField(projectTitleField)
			inputForm.addField(startDayMenu)
			inputForm.addField(timesMenu)
			inputForm.addField(meridiemMenu)
			inputForm.addField(courseDurationMenu)
			inputForm.addField(timesPerDayMenu)

			inputForm.validate = function(formObject){
				projectTitle = formObject.values['projectTitle']
				return (!projectTitle) ? false:true
			}

			formPrompt = "Select parameters for this medication:"
			buttonTitle = "Continue"
			formObject = await inputForm.show(formPrompt, buttonTitle)

			projectTitle = formObject.values["projectTitle"]
			startDay = formObject.values["startDay"]
			startTime = formObject.values["startTime"]
			meridiemOption = formObject.values["meridiemOption"]

			targetDate = new Date()
			if (startDay === "Tomorrow"){
				targetDate = new Date(targetDate.setHours(24, 0, 0, 0))
			}
			dateString = targetDate.toLocaleDateString()
			startDueDate = new Date(dateString + " " + startTime + " " + meridiemOption)

			courseDuration = Number(formObject.values["courseDuration"])
			courseDurationString = String(courseDuration)

			timesPerDay = Number(formObject.values["timesPerDay"])
			timeInterval = 24 / timesPerDay
			timeIntervalString = String(timeInterval)

			dosageCount = courseDuration * timesPerDay
			dosageCountString = String(dosageCount)

			dc = Calendar.current.dateComponentsFromDate(startDueDate)
			dc.day = dc.day + courseDuration
			completionDate = Calendar.current.dateFromDateComponents(dc)
			completionDateString = completionDate.toLocaleDateString()
		
			project = new Project(`${projectTitle} (${courseDurationString}-day to ${completionDateString})`)
			project.sequential = true
			project.completedByChildren = true

			taskDueDateTime = startDueDate.getTime()
			millisecondsToAdd = timeInterval * 3600000

			for (i = 0; i < dosageCount; i++) {
				task = new Task(`Dose ${i + 1}`, project)
				if (i !== 0){
					taskDueDateTime = taskDueDateTime + millisecondsToAdd
				}
				newDueDate = new Date(taskDueDateTime)
				task.dueDate = newDueDate
			}

			document.windows[0].perspective = Perspective.BuiltIn.Projects
			document.windows[0].focus = [project]
		}
		catch(err => {
			if (!err.causedByUserCancelling){
				new Alert(err.name, err.message).show()
			}
		})
	});

	action.validate = function(selection, sender){
		return true
	};
	
	return action;
})();