import os
import argparse
import textwrap

import bumblebee.theme
import bumblebee.module

class Config(object):
    def __init__(self, args):
        self._raw = args
        self._parser = self._parser()
        self._indent = " "*4

        if len(args) == 0:
            self._parser.print_help()
            self._parser.exit()

        self._args = self._parser.parse_args(args)

        if self._args.list == "modules":
            self.print_modules()
        if self._args.list == "themes":
            self.print_themes()
        if self._args.list:
            self._parser.exit()

    def parameter(self, name, default):
        # TODO
        return default

    def theme(self):
        return self._args.theme

    def modules(self):
        return self._args.modules

    def print_themes(self):
        print(textwrap.fill(", ".join(bumblebee.theme.themes()),
            80, initial_indent = self._indent, subsequent_indent = self._indent
        ))

    def print_modules(self):
        for m in bumblebee.module.modules():

            print("{}{}: ".format(self._indent, m.name()))
            print textwrap.fill("About : {}".format(m.description()),
                80, initial_indent=self._indent*2, subsequent_indent=self._indent*4)
            print textwrap.fill("Usage : {}".format(m.usage()),
                80, initial_indent=self._indent*2, subsequent_indent=self._indent*4)
            print textwrap.fill("Notes : {}".format(m.notes()),
                80, initial_indent=self._indent*2, subsequent_indent=self._indent*4)
            print ""

    def _parser(self):
        parser = argparse.ArgumentParser(description="display system data in the i3bar")
        parser.add_argument("-m", "--modules", nargs="+",
            help="List of modules to load. The order of the list determines "
            "their order in the i3bar (from left to right)",
            default=[],
        )
        parser.add_argument("-l", "--list",
            help="List: 'modules', 'themes' ",
            choices = [ "modules", "themes" ],
        )
        parser.add_argument("-t", "--theme", help="Specify which theme to use for "
            "drawing the modules",
            default="default",
        )

        return parser


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