"""
                                      '||
... ...  .... ... ... ... ...  ....    ||
 ||'  ||  '|.  |   ||  ||  |  '' .||   ||
 ||    |   '|.|     ||| |||   .|' ||   ||
 ||...'     '|       |   |    '|..'|' .||.
 ||      .. |
''''      ''
Created by Dylan Araps.
"""

import argparse
import os
import shutil
import sys

from .settings import __version__, __cache_dir__
from . import colors
from . import export
from . import image
from . import reload
from . import sequences
from . import util
from . import wallpaper


def get_args():
    """Get the script arguments."""
    description = "wal - Generate colorschemes on the fly"
    arg = argparse.ArgumentParser(description=description)

    arg.add_argument("-a", metavar="\"alpha\"",
                     help="Set terminal background transparency. \
                           *Only works in URxvt*")

    arg.add_argument("-c", action="store_true",
                     help="Delete all cached colorschemes.")

    arg.add_argument("-i", metavar="\"/path/to/img.jpg\"",
                     help="Which image or directory to use.")

    arg.add_argument("-f", metavar="\"/path/to/colorscheme/file\"",
                     help="Which colorscheme file to use.")

    arg.add_argument("-n", action="store_true",
                     help="Skip setting the wallpaper.")

    arg.add_argument("-o", metavar="\"script_name\"",
                     help="External script to run after \"wal\".")

    arg.add_argument("-q", action="store_true",
                     help="Quiet mode, don\"t print anything and \
                           don't display notifications.")

    arg.add_argument("-r", action="store_true",
                     help="Reload current colorscheme.")

    arg.add_argument("-t", action="store_true",
                     help="Fix artifacts in VTE Terminals. \
                           (Termite, xfce4-terminal)")

    arg.add_argument("-v", action="store_true",
                     help="Print \"wal\" version.")

    return arg.parse_args()


def process_args(args):
    """Process args."""
    if not len(sys.argv) > 1:
        print("error: wal needs to be given arguments to run.\n"
              "       Refer to \"wal -h\" for more info.")
        exit(1)

    if args.i and args.f:
        print("error: Conflicting arguments -i and -f.\n"
              "       Refer to \"wal -h\" for more info.")
        exit(1)

    if args.v:
        print(f"wal {__version__}")
        exit(0)

    if args.q:
        sys.stdout = sys.stderr = open(os.devnull, "w")

    if args.c:
        shutil.rmtree(__cache_dir__ / "schemes", ignore_errors=True)

    if args.r:
        reload.colors(args.t)

    if args.a:
        util.Color.alpha_num = args.a

    if args.i:
        image_file = image.get(args.i)
        colors_plain = colors.get(image_file, notify=not args.q)

    if args.f:
        colors_plain = colors.file(args.f)

    if args.i or args.f:
        sequences.send(colors_plain, args.t)

        if not args.n:
            wallpaper.change(colors_plain["wallpaper"])

        export.every(colors_plain)
        reload.env()

    if args.o:
        util.disown(args.o)


def main():
    """Main script function."""
    args = get_args()
    process_args(args)

    # This saves 10ms.
    # pylint: disable=W0212
    # os._exit(0)


if __name__ == "__main__":
    main()