#!/usr/bin/env python3

import re
import json
from pathlib import Path


INDENT = 2
SPACE = " "
NEWLINE = "\n"


def to_json(o, level=0):
    ret = ""
    if isinstance(o, dict):
        ret += "{" + NEWLINE
        comma = ""
        for k, v in o.items():
            ret += comma
            comma = ",\n"
            ret += SPACE * INDENT * (level+1)
            ret += '"' + str(k) + '":' + SPACE
            ret += to_json(v, level + 1)

        ret += NEWLINE + SPACE * INDENT * level + "}"
    elif isinstance(o, str):
        ret += '"' + o + '"'
    elif isinstance(o, list):
        ret += "[" + ",".join([to_json(e, level+1) for e in o]) + "]"
    elif isinstance(o, bool):
        ret += "true" if o else "false"
    elif isinstance(o, int):
        ret += str(o)
    elif isinstance(o, float):
        ret += '%.7g' % o
    elif o is None:
        ret += 'null'
    else:
        raise TypeError("Unknown type '%s' for json serialization" % str(type(o)))
    return ret


def cterm(cname: str) -> int:
    if cname == "background":
        return 0
    if cname == "foreground":
        return 15
    if cname == "selection_background":
        return 2
    if cname == "selection_foreground":
        return 15
    if cname == "cursor":
        return 2

    if "color" in cname:
        return int(cname.strip("color"))


def parse_kitty_theme(name: str, theme: str) -> dict:
    d = {}

    for line in theme.splitlines():
        colorname, colorhex = line.split()
        d[f"kitty:{colorname}"] = [cterm(colorname), colorhex[1:]]

    return d


def get_kitty_theme() -> Path:
    kitty_conf = Path.home() / ".config" / "kitty" / "kitty.conf"
    txt = kitty_conf.read_text()
    match = re.search(r"include (\./themes/.*.conf)", txt)
    theme_name = match.groups()[0]
    print("theme_name: ", theme_name)
    theme_path = kitty_conf.parent / theme_name
    print("theme_path: ", theme_path)
    return theme_path


if __name__ == "__main__":
    f = get_kitty_theme()
    colors_file = Path(__file__).parent / "colors.json"
    powerline_colors = json.loads(colors_file.read_text())

    kitty_colors = parse_kitty_theme(f.stem, f.read_text())
    powerline_colors["colors"].update(kitty_colors)
    colors_file.write_text(to_json(powerline_colors))