# Copyright (c) 2008, Aldo Cortesi. All rights reserved.
#
# 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 os.path
import sys
import utils

class ConfigError(Exception): pass


class Config:
    keys = ()
    mouse = ()
    groups = None
    layouts = None
    screens = ()
    main = None
    follow_mouse_focus = True
    cursor_warp = False


class File(Config):
    def __init__(self, fname=None):
        if not fname:
            config_directory = os.path.expandvars('$XDG_CONFIG_HOME')
            if config_directory == '$XDG_CONFIG_HOME': #if variable wasn't set
                config_directory = os.path.expanduser("~/.config")
            fname = os.path.join(config_directory, "qtile", "config.py")
        elif fname == "default":
            fname = utils.data.path("resources/default-config.py")

        self.fname = fname
        globs = {}

        if not os.path.isfile(fname):
            raise ConfigError("Config file does not exist: %s"%fname)
        try:
            sys.path.append(os.path.dirname(self.fname)) #to allow 'import'ing from the config dir
            execfile(self.fname, {}, globs)
        except Exception, v:
            raise ConfigError(str(v))


        self.keys = globs.get("keys")
        self.mouse = globs.get("mouse", [])
        self.groups = globs.get("groups")
        self.follow_mouse_focus = globs.get("follow_mouse_focus", True)
        self.cursor_warp = globs.get("cursor_warp", False)
        self.layouts = globs.get("layouts")
        self.floating_layout = globs.get('floating_layout', None)
        if self.floating_layout is None:
            from .layout import Floating
            self.floating_layout = Floating()
        self.screens = globs.get("screens")

        if not self.screens:
            raise ConfigError("Cannot have no screens setup")

        self.main = globs.get("main")