#!/usr/bin/env 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/>.

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

import sys
import os

import ansible.playbook
import ansible.constants as C
import ansible.utils.template 
from ansible import errors
from ansible import callbacks
from ansible import utils
from ansible.color import ANSIBLE_COLOR, stringc
from ansible.callbacks import display

def colorize(lead, num, color):
    """ Print 'lead' = 'num' in 'color' """
    if num != 0 and ANSIBLE_COLOR and color is not None:
        return "%s%s%-15s" % (stringc(lead, color), stringc("=", color), stringc(str(num), color))
    else:
        return "%s=%-4s" % (lead, str(num))

def hostcolor(host, stats, color=True):
    if ANSIBLE_COLOR and color:
        if stats['failures'] != 0 or stats['unreachable'] != 0:
            return "%-37s" % stringc(host, 'red')
        elif stats['changed'] != 0:
            return "%-37s" % stringc(host, 'yellow')
        else:
            return "%-37s" % stringc(host, 'green')
    return "%-26s" % host


def main(args):
    ''' run ansible-playbook operations '''

    # create parser for CLI options
    parser = utils.base_parser(
        constants=C, 
        usage = "%prog playbook.yml",
        connect_opts=True, 
        runas_opts=True, 
        subset_opts=True, 
        check_opts=True,
        diff_opts=True
    )
    parser.add_option('-e', '--extra-vars', dest="extra_vars", default=None,
        help="set additional key=value variables from the CLI")
    parser.add_option('-t', '--tags', dest='tags', default='all',
        help="only run plays and tasks tagged with these values")
    parser.add_option('--syntax-check', dest='syntax', action='store_true',
        help="perform a syntax check on the playbook, but do not execute it")
    parser.add_option('--list-tasks', dest='listtasks', action='store_true',
        help="list all tasks that would be executed")
    parser.add_option('--step', dest='step', action='store_true',
        help="one-step-at-a-time: confirm each task before running")
    parser.add_option('--start-at-task', dest='start_at', 
        help="start the playbook at the task matching this name")

    options, args = parser.parse_args(args)

    if len(args) == 0:
        parser.print_help(file=sys.stderr)
        return 1

    inventory = ansible.inventory.Inventory(options.inventory)
    inventory.subset(options.subset)
    if len(inventory.list_hosts()) == 0:
        raise errors.AnsibleError("provided hosts list is empty")

    sshpass = None
    sudopass = None
    if not options.listhosts and not options.syntax and not options.listtasks:
        options.ask_pass = options.ask_pass or C.DEFAULT_ASK_PASS
        options.ask_sudo_pass = options.ask_sudo_pass or C.DEFAULT_ASK_SUDO_PASS
        ( sshpass, sudopass ) = utils.ask_passwords(ask_pass=options.ask_pass, ask_sudo_pass=options.ask_sudo_pass)
        options.sudo_user = options.sudo_user or C.DEFAULT_SUDO_USER
    if options.extra_vars and options.extra_vars[0] in '[{':
        extra_vars = utils.json_loads(options.extra_vars)
    else:
        extra_vars = utils.parse_kv(options.extra_vars)
    only_tags = options.tags.split(",")

    for playbook in args:
        if not os.path.exists(playbook):
            raise errors.AnsibleError("the playbook: %s could not be found" % playbook)
        if not os.path.isfile(playbook):
            raise errors.AnsibleError("the playbook: %s does not appear to be a file" % playbook)

    # run all playbooks specified on the command line
    for playbook in args:

        # let inventory know which playbooks are using so it can know the basedirs
        inventory.set_playbook_basedir(os.path.dirname(playbook))

        stats = callbacks.AggregateStats()
        playbook_cb = callbacks.PlaybookCallbacks(verbose=utils.VERBOSITY)
        if options.step:
            playbook_cb.step = options.step
        if options.start_at:
            playbook_cb.start_at = options.start_at
        runner_cb = callbacks.PlaybookRunnerCallbacks(stats, verbose=utils.VERBOSITY)

        pb = ansible.playbook.PlayBook(
            playbook=playbook,
            module_path=options.module_path,
            inventory=inventory,
            forks=options.forks,
            remote_user=options.remote_user,
            remote_pass=sshpass,
            callbacks=playbook_cb,
            runner_callbacks=runner_cb,
            stats=stats,
            timeout=options.timeout,
            transport=options.connection,
            sudo=options.sudo,
            sudo_user=options.sudo_user,
            sudo_pass=sudopass,
            extra_vars=extra_vars,
            private_key_file=options.private_key_file,
            only_tags=only_tags,
            check=options.check,
            diff=options.diff
        )

        if options.listhosts or options.listtasks:
            print ''
            print 'playbook: %s' % playbook
            print ''
            playnum = 0
            for (play_ds, play_basedir) in zip(pb.playbook, pb.play_basedirs):
                playnum += 1
                play = ansible.playbook.Play(pb, play_ds, play_basedir)
                label = play.name
                if options.listhosts:
                    hosts = pb.inventory.list_hosts(play.hosts)
                    print '  play #%d (%s): host count=%d' % (playnum, label, len(hosts))
                    for host in hosts:
                        print '    %s' % host
                if options.listtasks:
                    matched_tags, unmatched_tags = play.compare_tags(pb.only_tags)
                    unmatched_tags.discard('all')
                    unknown_tags = set(pb.only_tags) - (matched_tags | unmatched_tags)
                    if unknown_tags:
                        continue
                    print '  play #%d (%s): task count=%d' % (playnum, label, len(play.tasks()))
                    for task in play.tasks():
                        if set(task.tags).intersection(pb.only_tags):
                            if getattr(task, 'name', None) is not None:
                                # meta tasks have no names
                                print '    %s' % task.name
                print ''
            continue

        if options.syntax:
            # if we've not exited by now then we are fine.
            print 'Playbook Syntax is fine'
            return 0
            
        failed_hosts = []

        try:

            pb.run()

            hosts = sorted(pb.stats.processed.keys())
            display(callbacks.banner("PLAY RECAP"))
            playbook_cb.on_stats(pb.stats)

            for h in hosts:
                t = pb.stats.summarize(h)
                if t['unreachable'] > 0 or t['failures'] > 0:
                    failed_hosts.append(h)

            if len(failed_hosts) > 0:
                filename = pb.generate_retry_inventory(failed_hosts)
                if filename:
                    display("           to retry, use: --limit @%s\n" % filename)

            for h in hosts:
                t = pb.stats.summarize(h)

                display("%s : %s %s %s %s" % (
                    hostcolor(h, t),
                    colorize('ok', t['ok'], 'green'),
                    colorize('changed', t['changed'], 'yellow'),
                    colorize('unreachable', t['unreachable'], 'red'),
                    colorize('failed', t['failures'], 'red')), 
                    screen_only=True
                )

                display("%s : %s %s %s %s" % (
                    hostcolor(h, t, False),
                    colorize('ok', t['ok'], None),
                    colorize('changed', t['changed'], None),
                    colorize('unreachable', t['unreachable'], None),
                    colorize('failed', t['failures'], None)), 
                    log_only=True
                )

 
            print ""
            if len(failed_hosts) > 0:
                return 2

        except errors.AnsibleError, e:
            display("ERROR: %s" % e, color='red')
            return 1

    return 0


if __name__ == "__main__":
    display(" ", log_only=True)
    display(" ".join(sys.argv), log_only=True)
    display(" ", log_only=True)
    try:
        sys.exit(main(sys.argv[1:]))
    except errors.AnsibleError, e:
        display("ERROR: %s" % e, color='red', stderr=True)
        sys.exit(1)

