from __future__ import division
import serial





class Command:

    def __init__(self, name, *args):
        self.name = name # hpgl Command  name e.g. PU, PA,
        self.args = args # list of Position args

    @property
    def x(self):
        return self.args[0] \
               if self.name in ("PA", "PD", "PR", "PU" ) and self.args else \
               None # Only these Commads have args

    @property
    def y(self):
        return self.args[1] \
               if self.name in ("PA", "PD", "PR", "PU" ) and self.args else \
               None

    def __len__(self):
        return len(str(self))
    
    def __str__(self):
        return self.name + ",".join(str(arg) for arg in self.args) + ";"

    def __mul__(self, factor):
        if self.name not in ("PA", "PD", "PR", "PU" ) or not  self.args:
            return self
        if type(factor) == type(0) or type(factor) == type(0.0):
            factor = (factor, factor)
        return Command(self.name,
                       int(self.x * factor[0]),
                       int(self.y * factor[1]))

        
    def __add__(self, addend):
        if self.name not in ("PA", "PD", "PR", "PU" ) or not  self.args:
            return self
        if type(addend) == type(0) or type(addend) == type(0.0):
            addend = (addend, addend)
        return Command(self.name,
                       int(self.x + addend[0]),
                       int(self.y + addend[1]))

    def __sub__(self, addend):
        if type(addend) == type(0) or type(addend) == type(0.0):
            addend = (addend, addend)
        return self + (-addend[0], -addend[1])
    
class Program:

    def __init__(self, commands=[]):
        self.commands = commands

    def parsefile(self, filename):
        with open(filename) as file:
            self.parse( file.read())

    def parse(self, code):
        for command in code.strip().split(";")[:-1]:
            name, args = command[:2], command[2:]
            args = [int(arg) for arg in args.split(",")] if args else []
            #print name , args
            self.commands.append(Command(name, *args))
        
    def __str__(self):
        return "".join(str(command) for command in self.commands)
        

    def __mul__(self, arg):
        return Program([command * arg for command in self.commands])
    
    
    def __add__(self, arg):
        return Program([command + arg for command in self.commands])

    def __sub__(self, arg):
        return Program([command - arg for command in self.commands])
    
    def __len__(self):
        return len(str(self))

    @property
    def xmax(self):
        return max(command.x for command in self.commands if command.x)
    @property
    def xmin(self):
        return min(command.x for command in self.commands if command.x) 
    @property
    def ymax(self):
        return max(command.y for command in self.commands if command.y)
    @property
    def ymin(self):
        return min(command.y for command in self.commands if command.y) 
    @property
    def center(self):
        return (self.xmin+self.xmax)/2,(self.ymin+self.ymax)/2
    @property
    def size(self): return self.xmax-self.xmin , self.yax - self.ymin
    
    @property
    def winsize(self): return self.xmax-self.xmin , self.ymax - self.ymin

    def centralize(self):
        return self-self.center
        #arg= self.center
        #return Program([command - arg for command in self.commands])
    
    def oob(self, pltr):
        
        return (self.xmax > pltr.xmax or self.xmin < pltr.xmin or self.ymin < pltr.ymin or self.ymax > pltr.ymax)

    def full(self,pltr):
        arg = min(pltr.winsize[0]/self.winsize[0],pltr.winsize[1]/self.winsize[1])
        return Program([command * arg for command in self.commands])
    
     
class Plotter:

    def __init__(self):
        try:
            self.ser = serial.Serial('/dev/ttyUSB0', 9600)
            self.ser.write('OW;') 
            s = [] 
            while True:
                x = self.ser.read()
                if x == "\x0d":
                    break
                s.append(x)
            if not s:
                print 'I/O Fehler ist der Plotter bereit' 
            self.__boundaries = tuple(int(x) for x in "".join(s).split(","))
            
        except OSError:
            self.__boundaries = -1000,-1000,1000,1000
            
            print "No such file or directory: '/dev/ttyUSB0'"

        


    @property
    def xmin(self):
        return self.__boundaries[0]

    @property
    def ymin(self):
        return self.__boundaries[1]

    @property
    def xmax(self):
        return self.__boundaries[2]

    @property
    def ymax(self):
        return self.__boundaries[3]

    @property
    def center(self):
        return (self.xmin + self.xmax)/2, (self.ymin + self.ymax)/2

    def write(self,programm):
         self.ser.write(str(programm))
    @property
    def winsize(self):
        return self.xmax-self.xmin , self.ymax - self.ymin

   
plt=Plotter()
p=Program()
p.parsefile("kreis.hpgl" )


print len(p)
plt.write(p)