#!/usr/bin/env python

"""cheat

Create and view cheatsheets on the command line.

Usage:
  cheat <cheatsheet>
  cheat -e <cheatsheet>
  cheat -s <keyword>
  cheat -l
  cheat -d
  cheat -v

Options:
  -d --directories  List directories on $CHEAT_PATH
  -e --edit         Edit cheatsheet
  -l --list         List cheatsheets
  -s --search       Search cheatsheets for <keyword>
  -v --version      Print the version number

Examples:

  To view the `tar` cheatsheet:
    cheat tar

  To edit (or create) the `foo` cheatsheet:
    cheat -e foo

  To list all available cheatsheets:
    cheat -l

  To search for "ssh" among all cheatsheets:
    cheat -s ssh
"""

# require the dependencies
from __future__ import print_function
from cheat.colorize import Colorize
from cheat.configuration import Configuration
from cheat.sheet import Sheet
from cheat.sheets import Sheets
from cheat.utils import Utils
from docopt import docopt
import os

if __name__ == '__main__':

    # parse the command-line options
    options = docopt(__doc__, version='cheat 2.5.1')

    # initialize and validate configs
    config = Configuration()
    config.validate()

    # create the CHEAT_USER_DIR if it does not exist
    if not os.path.isdir(config.cheat_user_dir):
        try:
            os.mkdir(config.cheat_user_dir)

        except OSError:
            Utils.die("%s %s %s" % (
                'Could not create CHEAT_USER_DIR (',
                config.cheat_user_dir,
                ')')
            )

    # assert that the CHEAT_USER_DIR is readable and writable
    if not os.access(config.cheat_user_dir, os.R_OK):
        Utils.die("%s %s %s" % (
            'The CHEAT_USER_DIR (',
            config.cheat_user_dir,
            ') is not readable')
        )
    if not os.access(config.cheat_user_dir, os.W_OK):
        Utils.die("%s %s %s" % (
            'The CHEAT_USER_DIR (',
            config.cheat_user_dir,
            ') is not writeable')
        )

    # bootsrap
    sheets = Sheets(config)
    sheet = Sheet(config, sheets)
    colorize = Colorize(config)

    # list directories
    if options['--directories']:
        print("\n".join(sheets.directories()))

    # list cheatsheets
    elif options['--list']:
        print(sheets.list(), end="")

    # create/edit cheatsheet
    elif options['--edit']:
        sheet.edit(options['<cheatsheet>'])

    # search among the cheatsheets
    elif options['--search']:
        print(colorize.syntax(sheets.search(options['<keyword>'])), end="")

    # print the cheatsheet
    else:
        print(colorize.syntax(sheet.read(options['<cheatsheet>'])), end="")