from datetime import datetime


class TimeDisplay:

    def __init__(self, character_display, lineTop):
        self.displayedHourParts = [-1, -1]
        self.displayedMinuteParts = [-1, -1]
        self.character_display = character_display
        self.lineTop = lineTop

        self.character_display.displayTimeDots(7, self.lineTop)

    def showTime(self):
        hourParts = self.getTimeParts('%l')
        minuteParts = self.getTimeParts('%M')

        if hourParts[0] != self.displayedHourParts[0]:
            self.displayedHourParts[0] = hourParts[0]

            if hourParts[0] == 0:
                self.character_display.clearNumberPixels(-1, self.lineTop)
            else:
                self.character_display.displayNumber(-1, self.lineTop, hourParts[0])

        if hourParts[1] != self.displayedHourParts[1]:
            self.displayedHourParts[1] = hourParts[1]
            self.character_display.displayNumber(3, self.lineTop, hourParts[1])

        if minuteParts[0] != self.displayedMinuteParts[0]:
            self.displayedMinuteParts[0] = minuteParts[0]
            self.character_display.displayNumber(9, self.lineTop, minuteParts[0])

        if minuteParts[1] != self.displayedMinuteParts[1]:
            self.displayedMinuteParts[1] = minuteParts[1]
            self.character_display.displayNumber(13, self.lineTop, minuteParts[1])

    def getTimeParts(self, timePart):
        parts = datetime.now().strftime(timePart).strip().rjust(2, "0")

        return [int(x) for x in parts]