#!/usr/bin/env python3

# Copyright (C) 2019  Max Regan

# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

import argparse
import io
from PIL import ImageFont, ImageDraw
import logging

logger = logging.getLogger(__name__)

def generate_font_file(ttf, output, size, characters):

    font = ImageFont.truetype(ttf, size)

    logger.debug("Width of all chars is %d", font.getsize(characters)[0])

    characters = list(characters)
    characters.sort()

    size = None
    total = 0
    for char in characters:
        total += font.getsize(char)[0]
        if size is None:
            size = font.getsize(str(char))
        else:
            pass
            logger.debug("Width of %c is %d", char, font.getsize(char)[0])
    logger.debug("Total width of %d chars is %d", len(characters), total)
    logger.debug("Average of %f pixels per char", float(total) / len(characters))
    logger.debug("%s", float(total) / len(characters))



def main():
    parser = argparse.ArgumentParser("")
    parser.add_argument("-o", "--output", help="Output file",
                        action="store", type=str)
    parser.add_argument("-t", "--ttf", help="TrueType font file",
                        action="store", type=str)
    parser.add_argument("-s", "--size", help="Font point size",
                        action="store", type=int)
    parser.add_argument("-c", "--characters", help="Font point size",
                        default=
                        "abcdefghijklmnopqrstuvwxyz"
                        "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
                        "0123456789.,!?<>",
                        action="store", type=str)
    parser.add_argument("-v", "--verbose", help="increase output verbosity",
                        action="store_true")
    args = parser.parse_args()

    logging.basicConfig(level=logging.DEBUG,
                        format='%(asctime)s %(levelname)s %(message)s')

    generate_font_file(args.ttf, args.output, args.size, args.characters)


if __name__ == "__main__":
    main()