import os
import pygame
import sys
import math

pygame.init()
pygame.font.init()

assert pygame.font.get_init()

fmod = pygame.font
Font = pygame.font.Font

fontname, fontsize = sys.argv[1:]

if '/' in fontname:
	ffile = fontname
	fontname = os.path.splitext(os.path.split(fontname)[1])[0].lower()
else:
	ffile = fmod.match_font(fontname)

if not ffile:
	print("Unable to find font... here is a list of fonts:\n")
	for x in sorted(fmod.get_fonts()):
		print(x)
	sys.exit(0)
		
fontsize = int(fontsize)
fontname = "%s%s" % (fontname, fontsize)

f = Font(ffile, fontsize)

start = 32
end = 128
images = []
imsizes = []
maxwidth = 0
maxheight = 0
for char in range(start, end):
	letter = chr(char)
	sz = f.size(letter)
	maxwidth = max(maxwidth, sz[0])
	maxheight = max(maxheight, sz[1])
	im = f.render(letter, True, (255, 255, 255))
	images.append(im)
	imsizes.append(sz)

print(len(images))
maxwidth += 1
maxheight += 1

ratio = float(maxwidth) / float(maxheight)
print("Ratio %s" % (ratio,))
reqwidth = maxwidth * len(images)

ratioheight = int(math.ceil(math.sqrt(len(images) * ratio)))
ratiowidth = int(math.ceil(len(images) / math.sqrt(len(images) * ratio)))

print([ratioheight, ratiowidth])

reqwidth = maxwidth * ratiowidth
reqheight = maxheight * ratioheight

print([reqheight, reqwidth])

texsize = 16

while texsize < reqheight or texsize < reqwidth:
	texsize *= 2
	
print(texsize)

tex = pygame.Surface((texsize, texsize), pygame.SRCALPHA, 32)
tex.fill((0, 0, 0, 0))

for i, im in enumerate(images):
	tex.blit(im, (((i % ratiowidth) * maxwidth), ((i // ratiowidth) * maxheight)))
	
pygame.image.save(tex, "%s.png" % (fontname,))

datf = open("%s.tfd" % (fontname,), "w")
datf.write("fontheader\n")
datf.write("%s,%s\n" % (start, end))
datf.write("%s,%s\n" % (maxwidth, maxheight))
datf.write("%s,%s\n" % (ratiowidth, ratioheight))
datf.write("%s,%s\n" % (texsize, texsize))
datf.write("charsizes\n")
for i, sz in enumerate(imsizes):
	datf.write("%s,%s\n" % (sz[0], sz[1]))
	
datf.close()