#!/usr/bin/python3
# -*- coding: utf-8 -*-
# -*- mode: Python -*-

'''

Static text writer

pip3 install Hershey-Fonts

v0.1.0

Font list : 
'futural', 'astrology', 'cursive', 'cyrilc_1', 'cyrillic', 'futuram', 'gothgbt', 'gothgrt', 
'gothiceng', 'gothicger', 'gothicita', 'gothitt', 'greek', 'greekc', 'greeks', 'japanese', 
'markers', 'mathlow', 'mathupp', 'meteorology', 'music', 'rowmand', 'rowmans', 'rowmant', 
'scriptc', 'scripts', 'symbolic', 'timesg', 'timesi', 'timesib', 'timesr', 'timesrb'

Licensed under GNU GPLv3

by cocoa and Sam Neurohack

'''

import time
import argparse
from HersheyFonts import HersheyFonts
import redis

argsparser           = argparse.ArgumentParser(description="Text generator")
argsparser.add_argument("-s","--speed",help="Frame Per Second (30)",default=30,type=int)
argsparser.add_argument("-x","--xpos",help="Position X (0)",default=0,type=int)
argsparser.add_argument("-y","--ypos",help="Position Y (0)",default=0,type=int)
argsparser.add_argument("-v","--verbose",action="store_true",default="True",help="Verbose output (true)")
argsparser.add_argument("-t","--text",help="Text to display, default hello",default="hello",type=str)
argsparser.add_argument("-f","--font",help="Herschey font to use. (futural) One of ({})".format(", ".join(HersheyFonts().default_font_names)),default="futural",type=str)
argsparser.add_argument("-i","--ip",help="IP address of the Redis server (127.0.0.1)",default="127.0.0.1",type=str)
argsparser.add_argument("-p","--port",help="Port of the Redis server (6379)",default="6379",type=str)
argsparser.add_argument("-k","--key",help="Redis key to update, default (/pl/0/0)",default="/pl/0/0",type=str)

args        = argsparser.parse_args()
fps                   = args.speed
verbose               = args.verbose
text                  = args.text
fontname              = args.font
looptime = 1 / fps
r=redis.StrictRedis(host=args.ip, port=args.port, db=0)

def debug(text):
      if verbose:
         print(text)

def startFrame():
    return time.time()

def endFrame(timer):
    if not looptime :
      debug( "No looptime provided at init.")
      return
    elapsed = time.time() - timer
    if( elapsed < looptime ):
      delta = looptime - elapsed
      time.sleep( delta )
    
# Useful variables init.
def rgb2int(rgb):
    return int('0x%02x%02x%02x' % tuple(rgb),0)

# Useful variables init.
white                 = rgb2int((255,255,255))
red                   = rgb2int((255,0,0))
blue                  = rgb2int((0,0,255))
green                 = rgb2int((0,255,0))
color                 = 65280
shape                 = []
thefont               = HersheyFonts()
#thefont.load_default_font()
thefont.load_default_font(fontname)
thefont.normalize_rendering(120)

for (x1, y1), (x2, y2) in thefont.lines_for_text(text):
    shape.append((x1+args.xpos, -y1+args.ypos, color))
    shape.append((x2+args.xpos ,-y2+args.ypos, color))

while True:

  timer = startFrame()
  if r.set(args.key,str(shape))==True:
    debug("redis set("+str(args.key)+") to "+str(shape))
  print(shape, flush    = True);
  endFrame(timer)