#!/usr/bin/python
# -*- coding: utf-8 -*-
#
# (c) 2015, René Moser <mail@renemoser.net>
#
# 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/>.

DOCUMENTATION = '''
---
module: cs_user
short_description: Manages users on Apache CloudStack based clouds.
description:
    - Create, update, disable, lock, enable and remove users.
version_added: '2.0'
author: "René Moser (@resmo)"
options:
  username:
    description:
      - Username of the user.
    required: true
  account:
    description:
      - Account the user will be created under.
      - Required on C(state=present).
    required: false
    default: null
  password:
    description:
      - Password of the user to be created.
      - Required on C(state=present).
      - Only considered on creation and will not be updated if user exists.
    required: false
    default: null
  first_name:
    description:
      - First name of the user.
      - Required on C(state=present).
    required: false
    default: null
  last_name:
    description:
      - Last name of the user.
      - Required on C(state=present).
    required: false
    default: null
  email:
    description:
      - Email of the user.
      - Required on C(state=present).
    required: false
    default: null
  timezone:
    description:
      - Timezone of the user.
    required: false
    default: null
  domain:
    description:
      - Domain the user is related to.
    required: false
    default: 'ROOT'
  state:
    description:
      - State of the user.
      - C(unlocked) is an alias for C(enabled).
    required: false
    default: 'present'
    choices: [ 'present', 'absent', 'enabled', 'disabled', 'locked', 'unlocked' ]
  poll_async:
    description:
      - Poll async jobs until job has finished.
    required: false
    default: true
extends_documentation_fragment: cloudstack
'''

EXAMPLES = '''
# create an user in domain 'CUSTOMERS'
local_action:
  module: cs_user
  account: developers
  username: johndoe
  password: S3Cur3
  last_name: Doe
  first_name: John
  email: john.doe@example.com
  domain: CUSTOMERS

# Lock an existing user in domain 'CUSTOMERS'
local_action:
  module: cs_user
  username: johndoe
  domain: CUSTOMERS
  state: locked

# Disable an existing user in domain 'CUSTOMERS'
local_action:
  module: cs_user
  username: johndoe
  domain: CUSTOMERS
  state: disabled

# Enable/unlock an existing user in domain 'CUSTOMERS'
local_action:
  module: cs_user
  username: johndoe
  domain: CUSTOMERS
  state: enabled

# Remove an user in domain 'CUSTOMERS'
local_action:
  module: cs_user
  name: customer_xy
  domain: CUSTOMERS
  state: absent
'''

RETURN = '''
---
id:
  description: UUID of the user.
  returned: success
  type: string
  sample: 87b1e0ce-4e01-11e4-bb66-0050569e64b8
username:
  description: Username of the user.
  returned: success
  type: string
  sample: johndoe
fist_name:
  description: First name of the user.
  returned: success
  type: string
  sample: John
last_name:
  description: Last name of the user.
  returned: success
  type: string
  sample: Doe
email:
  description: Emailof the user.
  returned: success
  type: string
  sample: john.doe@example.com
api_key:
  description: API key of the user.
  returned: success
  type: string
  sample: JLhcg8VWi8DoFqL2sSLZMXmGojcLnFrOBTipvBHJjySODcV4mCOo29W2duzPv5cALaZnXj5QxDx3xQfaQt3DKg
api_secret:
  description: API secret of the user.
  returned: success
  type: string
  sample: FUELo3LB9fa1UopjTLPdqLv_6OXQMJZv9g9N4B_Ao3HFz8d6IGFCV9MbPFNM8mwz00wbMevja1DoUNDvI8C9-g
account:
  description: Account name of the user.
  returned: success
  type: string
  sample: developers
account_type:
  description: Type of the account.
  returned: success
  type: string
  sample: user
timezone:
  description: Timezone of the user.
  returned: success
  type: string
  sample: enabled
created:
  description: Date the user was created.
  returned: success
  type: string
  sample: Doe
state:
  description: State of the user.
  returned: success
  type: string
  sample: enabled
domain:
  description: Domain the user is related.
  returned: success
  type: string
  sample: ROOT
'''

try:
    from cs import CloudStack, CloudStackException, read_config
    has_lib_cs = True
except ImportError:
    has_lib_cs = False

# import cloudstack common
from ansible.module_utils.cloudstack import *


class AnsibleCloudStackUser(AnsibleCloudStack):

    def __init__(self, module):
        super(AnsibleCloudStackUser, self).__init__(module)
        self.returns = {
            'username':     'username',
            'firstname':    'first_name',
            'lastname':     'last_name',
            'email':        'email',
            'secretkey':    'api_secret',
            'apikey':       'api_key',
            'timezone':     'timezone',
        }
        self.account_types = {
            'user':         0,
            'root_admin':   1,
            'domain_admin': 2,
        }
        self.user = None


    def get_account_type(self):
        account_type = self.module.params.get('account_type')
        return self.account_types[account_type]


    def get_user(self):
        if not self.user:
            args                = {}
            args['domainid']    = self.get_domain('id')
            users = self.cs.listUsers(**args)
            if users:
                user_name = self.module.params.get('username')
                for u in users['user']:
                    if user_name.lower() == u['username'].lower():
                        self.user = u
                        break
        return self.user


    def enable_user(self):
        user = self.get_user()
        if not user:
            user = self.present_user()

        if user['state'].lower() != 'enabled':
            self.result['changed'] = True
            args        = {}
            args['id']  = user['id']
            if not self.module.check_mode:
                res = self.cs.enableUser(**args)
                if 'errortext' in res:
                    self.module.fail_json(msg="Failed: '%s'" % res['errortext'])
                user = res['user']
        return user


    def lock_user(self):
        user = self.get_user()
        if not user:
            user = self.present_user()

        # we need to enable the user to lock it.
        if user['state'].lower() == 'disabled':
            user = self.enable_user()

        if user['state'].lower() != 'locked':
            self.result['changed'] = True
            args        = {}
            args['id']  = user['id']
            if not self.module.check_mode:
                res = self.cs.lockUser(**args)

                if 'errortext' in res:
                    self.module.fail_json(msg="Failed: '%s'" % res['errortext'])

                user = res['user']
        return user


    def disable_user(self):
        user = self.get_user()
        if not user:
            user = self.present_user()

        if user['state'].lower() != 'disabled':
            self.result['changed'] = True
            args        = {}
            args['id']  = user['id']
            if not self.module.check_mode:
                user = self.cs.disableUser(**args)
                if 'errortext' in user:
                    self.module.fail_json(msg="Failed: '%s'" % user['errortext'])

                poll_async = self.module.params.get('poll_async')
                if poll_async:
                    user = self._poll_job(user, 'user')
        return user


    def present_user(self):
        missing_params = []
        for required_params in [
            'account',
            'email',
            'password',
            'first_name',
            'last_name',
        ]:
            if not self.module.params.get(required_params):
                missing_params.append(required_params)
        if missing_params:
            self.module.fail_json(msg="missing required arguments: %s" % ','.join(missing_params))

        user = self.get_user()
        if user:
            user = self._update_user(user)
        else:
            user = self._create_user(user)
        return user


    def _create_user(self, user):
        self.result['changed'] = True

        args                = {}
        args['account']     = self.get_account(key='name')
        args['domainid']    = self.get_domain('id')
        args['username']    = self.module.params.get('username')
        args['password']    = self.module.params.get('password')
        args['firstname']   = self.module.params.get('first_name')
        args['lastname']    = self.module.params.get('last_name')
        args['email']       = self.module.params.get('email')
        args['timezone']    = self.module.params.get('timezone')
        if not self.module.check_mode:
            res = self.cs.createUser(**args)
            if 'errortext' in res:
                self.module.fail_json(msg="Failed: '%s'" % res['errortext'])
            user = res['user']
            # register user api keys
            res = self.cs.registerUserKeys(id=user['id'])
            if 'errortext' in res:
                self.module.fail_json(msg="Failed: '%s'" % res['errortext'])
            user.update(res['userkeys'])
        return user


    def _update_user(self, user):
        args                = {}
        args['id']          = user['id']
        args['firstname']   = self.module.params.get('first_name')
        args['lastname']    = self.module.params.get('last_name')
        args['email']       = self.module.params.get('email')
        args['timezone']    = self.module.params.get('timezone')
        if self.has_changed(args, user):
            self.result['changed'] = True
            if not self.module.check_mode:
                res = self.cs.updateUser(**args)
                if 'errortext' in res:
                    self.module.fail_json(msg="Failed: '%s'" % res['errortext'])
                user = res['user']
        # register user api keys
        if 'apikey' not in user:
            self.result['changed'] = True
            if not self.module.check_mode:
                res = self.cs.registerUserKeys(id=user['id'])
                if 'errortext' in res:
                    self.module.fail_json(msg="Failed: '%s'" % res['errortext'])
                user.update(res['userkeys'])
        return user


    def absent_user(self):
        user = self.get_user()
        if user:
            self.result['changed'] = True

            if not self.module.check_mode:
                res = self.cs.deleteUser(id=user['id'])

                if 'errortext' in res:
                    self.module.fail_json(msg="Failed: '%s'" % res['errortext'])
        return user


    def get_result(self, user):
        super(AnsibleCloudStackUser, self).get_result(user)
        if user:
            if 'accounttype' in user:
                for key,value in self.account_types.items():
                    if value == user['accounttype']:
                        self.result['account_type'] = key
                        break
        return self.result


def main():
    argument_spec = cs_argument_spec()
    argument_spec.update(dict(
        username = dict(required=True),
        account = dict(default=None),
        state = dict(choices=['present', 'absent', 'enabled', 'disabled', 'locked', 'unlocked'], default='present'),
        domain = dict(default='ROOT'),
        email = dict(default=None),
        first_name = dict(default=None),
        last_name = dict(default=None),
        password = dict(default=None, no_log=True),
        timezone = dict(default=None),
        poll_async = dict(type='bool', default=True),
    ))

    module = AnsibleModule(
        argument_spec=argument_spec,
        required_together=cs_required_together(),
        supports_check_mode=True
    )

    if not has_lib_cs:
        module.fail_json(msg="python library cs required: pip install cs")

    try:
        acs_acc = AnsibleCloudStackUser(module)

        state = module.params.get('state')

        if state in ['absent']:
            user = acs_acc.absent_user()

        elif state in ['enabled', 'unlocked']:
            user = acs_acc.enable_user()

        elif state in ['disabled']:
            user = acs_acc.disable_user()

        elif state in ['locked']:
            user = acs_acc.lock_user()

        else:
            user = acs_acc.present_user()

        result = acs_acc.get_result(user)

    except CloudStackException as e:
        module.fail_json(msg='CloudStackException: %s' % str(e))

    module.exit_json(**result)

# import module snippets
from ansible.module_utils.basic import *
if __name__ == '__main__':
    main()
