Computed property gets computed infinitely and SwiftUI becomes unresponsive

Hi, I have a computed property in my SwiftUI Todo app that shows the status of the past 4 days - whether the todo was completed or not. For this I have a computed array days that contains the last 4 days including today. Using this array I show the results in checkboxes which is a SwiftUI view. But I have a problem, at midnight when the day changes the app becomes completely unresponsive as this array gets computed again and again infinitely. Only deleting the app and reinstalling it allows it to run normally again, until the next time the day changes when the same thing happens again.

Code Block 
var days: [Day] {
		var computedDays = [Day]()
		let calendar = Calendar.current
		var dayIndex = calendar.component(.weekday, from: Date())
		let lastFourDays = formatDateForPastFourDays(from: Date())
		// considering today is 20th August 2020
		// lastFourDays = ["August 20, 2020", "August 19, 2020", "August 18, 2020", "August 17, 2020"]
		let daysInitials = ["Su", "M", "T", "W", "Th", "F", "S"]
		let checkedDates = computeCheckedDates(lastFourDays)
		// checkedDates = [true, false]
		let passedDates = computePassedDates(for: checkedDates, dates: lastFourDays)
		// passedDates = [false, true, false, false]
		for idx in 0..<checkedDates.count {
				computedDays.append(Day(id: idx, date: lastFourDays[idx], dayValue: daysInitials[dayIndex - 1], checked: checkedDates[idx], passed: passedDates[idx]))
				dayIndex -= 1
				if dayIndex == 0 {
						dayIndex = 7
				}
		}
		// computedDays = [ToDoApp.Day(id: 0, date: "August 20, 2020", dayValue: "Th", checked: true, passed: false), ToDoApp.Day(id: 1, date: "August 19, 2020", dayValue: "W", checked: false, passed: true)]
		return computedDays
}

Code Block 
private func computeCheckedDates(_ dates: [String]) -> [Bool] {
    var checkedDates: [Bool]
    if createdAt != nil {
        let calendar = Calendar.current
        let daysDiff = calendar.dateComponents([.day], from: calendar.startOfDay(for: createdAt!), to: Date()).day
        if daysDiff == 0 {
            checkedDates = [false]
        } else if daysDiff == 1 {
            checkedDates = [false, false]
        } else if daysDiff == 2 {
            checkedDates = [false, false, false]
        } else {
            checkedDates = [false, false, false, false]
        }
    } else {
        checkedDates = [false]
    }
    if completedDates != nil {
        for idx in 0..<checkedDates.count {
            checkedDates[idx] = completedDates!.contains(dates[idx])
        }
    }
    return checkedDates
}
var createdAt: Date? {
    return habit.createdAt ?? Date()
}
var completedDates: [String]? {
    return habit.completedDates ?? nil
}
        

I think there is a problem in computeCheckedDates method which I haven't been able to figure out because as soon as I return only the current day's checked/unchecked status, the app runs just fine.

I am using the days property in a ForEach in SwiftUI and as soon I remove this code, the app also runs completely fine. But with the code I have shared days get computed again and again infinitely as soon as the system date changes to the next day.

Any suggestions?