#!/usr/bin/python

from optparse import OptionParser
import json
import os
import ansible

DEFAULT_HOST_LIST      = '~/.ansible_hosts'
DEFAULT_MODULE_PATH    = '~/ansible'
DEFAULT_MODULE_NAME    = 'ping'
DEFAULT_PATTERN        = '*'
DEFAULT_FORKS          = 3
DEFAULT_MODULE_ARGS    = ''

class Cli(object):

    def __init__(self):
        pass

    def runner(self):
        parser = OptionParser()
        parser.add_option("-H", "--host-list", dest="host_list",
            help="path to hosts list", default=DEFAULT_HOST_LIST)
        parser.add_option("-L", "--library", dest="module_path",
            help="path to module library", default=DEFAULT_MODULE_PATH)
        parser.add_option("-F", "--forks", dest="forks",
            help="level of parallelism", default=DEFAULT_FORKS)
        parser.add_option("-n", "--name", dest="module_name",
            help="module name to execute", default=DEFAULT_MODULE_NAME)
        parser.add_option("-a", "--args", dest="module_args",
            help="module arguments", default=DEFAULT_MODULE_ARGS)
        parser.add_option("-p", "--pattern", dest="pattern",
            help="hostname pattern", default=DEFAULT_PATTERN)

        options, args = parser.parse_args()
        host_list      = self._host_list(options.host_list)

        # TODO: more shell like splitting on module_args would
        # be a good idea

        return ansible.Runner(
            module_name=options.module_name,
            module_path=options.module_path,
            module_args=options.module_args.split(' '),
            host_list=host_list,
            forks=options.forks,
            pattern=options.pattern,
        )

    def _host_list(self, host_list):
        host_list = os.path.expanduser(host_list)
        return file(host_list).read().split("\n")

if __name__ == '__main__':

    result = Cli().runner().run()
    print json.dumps(result, sort_keys=True, indent=4)