import smbus as smbus
import time 


class Juice(object):
 def __init__(self):
  self.bus = smbus.SMBus(1)
  self.last_x_pos = 1500
  self.last_y_pos = 1500

  print("juice ready")

 def __del__(self):
  class_name = self.__class__.__name__
  print (class_name, "finished")

 def up(self):
  if(self.last_y_pos > 1000):
    y = self.last_y_pos
    while(y>1000):
      self.bus.write_word_data(0x48, 4, y)
      y-=50
      time.sleep(0.2)
    self.last_y_pos = y
 
 def down(self):
  if(self.last_y_pos < 2000):
    y = self.last_y_pos
    while(y<2000): 
      self.bus.write_word_data(0x48, 4, y)
      y+=50
      time.sleep(0.2)
    self.last_y_pos = y

 def left(self):
  if(self.last_x_pos < 2500):
    x = self.last_x_pos
    while(x<2500):
      self.bus.write_word_data(0x48, 1, x)
      x+=50
      time.sleep(0.2)
    self.last_x_pos = x

 def right(self):
  if(self.last_x_pos > 600):
    x = self.last_x_pos
    while(x>600):
      self.bus.write_word_data(0x48, 1, x)
      x-=50
      time.sleep(0.2)
    self.last_x_pos = x

 def center(self):
  self.bus.write_word_data(0x48, 1, 1500)
  self.last_x_pos = 1550
  self.bus.write_word_data(0x48, 4, 1500)
  self.last_y_pos = 1500

 def main(self):
  self.bus.write_word_data(0x48, 4, 1600)
  time.sleep(0.5)
  self.bus.write_word_data(0x48, 1, 1500)
  time.sleep(0.5)

  self.last_x_pos = 1500
  self.last_y_pos = 1500

 def auto(self):

  self.bus.write_word_data(0x48, 4, 1800)
  time.sleep(0.5)
  self.bus.write_word_data(0x48, 1, 1500)
  time.sleep(0.5)

  x = 1800
  pos = 1800

  for iteration in range (1, 4):
   for i in range(1000, 2000, 10):
    self.bus.write_word_data(0x48, 1, i)
    time.sleep(0.1)
   pos = x
   while pos > x-(iteration * 60):
    self.bus.write_word_data(0x48, 4, pos)
    time.sleep(0.1)
    pos-=5

   x = pos

   for i in range(2000, 1000, -10):
    self.bus.write_word_data(0x48, 1, i)
    time.sleep(0.1)
   pos = x
   while pos > x-(iteration* 70):
    self.bus.write_word_data(0x48, 4, pos)
    time.sleep(0.1)
    pos-=5

   x = pos

   print("iteration", iteration)

  self.bus.write_word_data(0x48, 4, 1500)

  print("done")

if __name__ == "__main__":

  juice = Juice()
  juice.auto()