"""
# Author: Duality/Robert
# email: robertvdtuuk@gmail.com

metadata.json =
{"name":"Better Buttons","description":"This library has better button support and has several features\r\n\r\nincluding double clicking on a button\r\nlong pressing a button.\r\n\r\ndetecting presses and releases on buttons.","category":"hardware","author":"Robert van der Tuuk","revision":1}
"""
import buttons
import utime

class Button(object):
	def __init__(self, buttonmask,
				 longPressInterval = 3000,
				 doubleClickInterval = 300):
		self.buttonmask = buttonmask
		self.previousState = False
		self.state = 0
		self.pressedState = False
		self.releasedState = False

		self.longPressStart = 0
		self.longPressEnd = 0
		self.longPressInterval = longPressInterval
		self.longPressState = False
		self.longPressedState = False

		self.previousDoubleClickTime = 0
		self.doubleClickInterval = doubleClickInterval
		self.doubleClickState = False

	def checkButton(self):
		state = buttons.read(self.buttonmask)

		# get the current button state from the hardware
		if (state & self.buttonmask) == self.buttonmask:
			self.pressedState = True
		else:
			self.pressedState = False

		# the button is released but previously was pressed.
		if self.pressedState == False and self.previousState == True:
			self.releasedState = True

		# the button is pressed  but previously wasn't pressed.
		if self.pressedState == True and self.previousState == False:
			self.longPressEnd = utime.time_ms() + self.longPressInterval
			self.longPressState = True
			self.longPressedState = False

			if utime.time_ms() - self.previousDoubleClickTime < self.doubleClickInterval:
				self.doubleClickState = True
			self.previousDoubleClickTime = utime.time_ms()

		if self.longPressState == True:
			if(utime.time_ms() - self.longPressEnd >= self.longPressInterval):
				self.longPressState = False
				self.longPressedState = True

		self.previousState = self.pressedState

	def pressed(self):
		return self.pressedState

	def released(self):
		releasedState = self.releasedState
		self.releasedState = 0
		return releasedState

	def longPressed(self):
		longpressed = self.longPressedState
		self.longPressedState = False
		return longpressed

	def doubleClicked(self):
		doubleClickState = self.doubleClickState
		self.doubleClickState = False
		return doubleClickState