import re # libary to search and replace strings in the postscript file
from dictionary import font_index
from random import choice
from generate_postscript import generate_postscript

# function with three arguments
def friction_label(previous_module, current_module, module):

    font = font_index[module[1]] # use font_index from dictionary to translate the fontname

    fontsize = module[2] # sensor3
    rotation = module[3] # sensor2
    linewidth = module[4]
    x = module[5] # sensor4
    y = module[6] # sensor 4, same the exact same value
    graytone1 = module[7] # sensor5
    graytone2 = module[8] # sensor5, opposite range


    #use text from text file that was written by dynamic glyph module
    textFile=open("dynamic_glyph.txt", "rt")
    textContent = textFile.read()
    if textContent != "": #use content of text file to define text variable
        text = textContent
        text = text.replace("\n", "")
    elif textContent == "": #if text file is emptpy: randomly pick a default text (in case keyboard module is not used)
        defaultText = ["Modular Matter", "MODULAR MATTER", "Rewire your prints!", "REWIRE YOUR PRINTS!"]
        text = choice(defaultText)

    # split the text into words to place them in separate lines
    text = text.split(" ")
    paragraph = ""
    for word in text:
        paragraph = paragraph + "(" + word + ") true charpath newline-friction-label "



    script = """

newpath
% FRICTION LABEL

/"""+font+"""
% fontname

"""+fontsize+""" selectfont
% fontsize in points, establishes the font as the current one

/x-friction-label { """+x+""" } def
% define x position

/y-friction-label { """+y+""" } def
% define y position

/lg-friction-label { """+fontsize+""" 4 div """+fontsize+""" add } def
% define linespacing:
% fontsize divided by 4 plus fontsize

/newline-friction-label { y-friction-label lg-friction-label sub /y-friction-label exch def x-friction-label y-friction-label moveto } def
% define newline (position of new line) by using subtracting linespacing (lg) from y posiition and define that as the new y position (exch-ange), finally move to x position and re-defined y position

x-friction-label y-friction-label moveto
% x and y coordinates in px (origin is the lower-left corner of the page)

"""+rotation+""" rotate
% degree of rotation, counter clockwise around the given position

"""+paragraph+"""

gsave
% save the current path to apply stroke first and then go back to the saved path to apply fill (Both drawing commands destroy the current path)

"""+linewidth+""" setlinewidth
% linewidth for the outline of the text

"""+graytone2+""" setgray
% graytone for the outline (0 = black, 1 = white)

stroke
% stroke (outline) the text in parentheses

grestore
% restore the original path to apply fill

"""+graytone1+""" setgray
% graytone for the filling (0 = black, 1 = white)

fill
% fill the text in parentheses

-"""+rotation+""" rotate
% set rotation back to zero

showpage
% print all on a page
"""




    generate_postscript(previous_module, current_module, script) # call function