#!/usr/bin/python

# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.

########################################################

try:
    import json
except ImportError:
    import simplejson as json
from optparse import OptionParser
import sys
import os
import getpass
import shlex
import ansible.runner
import ansible.playbook
import ansible.constants as C
from optparse import OptionParser
from ansible.utils import *

########################################################

class Cli(object):
    ''' code behind bin/ansible '''
    
    # ----------------------------------------------     

    def __init__(self):
        pass

    # ----------------------------------------------     

    def parse(self):
        ''' create an options parser for bin/ansible '''

        parser = OptionParser(usage = 'ansible <host-pattern> [options]')
        parser.add_option("-a", "--args", dest="module_args",
            help="module arguments", default=C.DEFAULT_MODULE_ARGS)
        parser.add_option("-B", "--background", dest="seconds", default=0,
            help="run asynchronously, failing after X seconds")
        parser.add_option('-f','--forks', dest='forks', default=C.DEFAULT_FORKS, type='int',
            help='number of parallel processes to use')
        parser.add_option("-i", "--inventory-file", dest="inventory",
           help="inventory host file", default=C.DEFAULT_HOST_LIST)
        parser.add_option("-k", "--ask-pass", default=False, action="store_true",
            help="ask for SSH password")
        parser.add_option("-M", "--module-path", dest="module_path",
           help="path to module library", default=C.DEFAULT_MODULE_PATH)
        parser.add_option("-m", "--module-name", dest="module_name",
            help="module name to execute", default=C.DEFAULT_MODULE_NAME)
        parser.add_option('-o', '--one-line', dest='one_line', action='store_true',
            help="condense output")
        parser.add_option('-t', '--tree', dest='tree', default=None,
            help="log output to this directory")
        parser.add_option('-T', '--timeout', default=C.DEFAULT_TIMEOUT, type='int',
            dest='timeout', help="set the SSH timeout in seconds")
        parser.add_option('-u', '--user', default=C.DEFAULT_REMOTE_USER,
            dest='remote_user', help='connect as this user')
        options, args = parser.parse_args()
        
        if len(args) == 0 or len(args) > 1:
            parser.print_help()
            sys.exit(1)
        return (options, args)   
    
    # ----------------------------------------------     
 
    def run(self, options, args):
        ''' use Runner lib to do SSH things '''

        pattern = args[0]
        sshpass = None
        if options.ask_pass:
            sshpass = getpass.getpass(prompt="SSH password: ")

        return ansible.runner.Runner(
            module_name=options.module_name,
            module_path=options.module_path,
            module_args=shlex.split(options.module_args),
            remote_user=options.remote_user,
            remote_pass=sshpass,
            host_list=options.inventory,
            timeout=options.timeout,
            forks=options.forks,
            background=options.seconds,
            pattern=pattern,
            verbose=True,
        ).run()

    # ----------------------------------------------     

    def output(self, results, options, args):
        ''' summarize results from Runner '''

        if results is None:
           exit("No hosts matched")
        if options.tree:
            prepare_writeable_dir(options.tree)

        buf = '' 
        for hostname in contacted_hosts(results):
            msg = host_report_msg(
                hostname, 
                options.module_name, 
                contacted_host_result(results, hostname),
                options.one_line
            )
            if options.tree:
                write_tree_file(options.tree, hostname, bigjson(results))
            buf += msg
            
        if has_dark_hosts(results):
            buf += dark_hosts_msg(results)

        print buf

########################################################

if __name__ == '__main__':
    cli = Cli()
    (options, args) = cli.parse()
    results = cli.run(options, args)
    cli.output(results, options, args)