#
# (c) 2018 Red Hat Inc.
#
# 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/>.
#
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type

DOCUMENTATION = '''
---
author: Unknown (!UNKNOWN)
name: edgeswitch
short_description: Use edgeswitch cliconf to run command on EdgeSwitch platform
description:
  - This edgeswitch plugin provides low level abstraction apis for
    sending and receiving CLI commands from Ubiquiti EdgeSwitch network devices.
'''

import re
import time
import json

from itertools import chain

from ansible.errors import AnsibleConnectionFailure
from ansible.module_utils._text import to_text
from ansible_collections.ansible.netcommon.plugins.module_utils.network.common.config import dumps
from ansible_collections.ansible.netcommon.plugins.module_utils.network.common.utils import to_list
from ansible.plugins.cliconf import CliconfBase, enable_mode
from ansible.module_utils.common._collections_compat import Mapping


class Cliconf(CliconfBase):

    def get_device_info(self):
        device_info = {}

        device_info['network_os'] = 'edgeswitch'
        reply = self.get(command='show version')
        data = to_text(reply, errors='surrogate_or_strict').strip()

        match = re.search(r'Software Version\.+ (.*)', data)
        if match:
            device_info['network_os_version'] = match.group(1).strip(',')

        match = re.search(r'^Machine Model\.+ (.*)', data, re.M)
        if match:
            device_info['network_os_model'] = match.group(1)

        match = re.search(r'System Name\.+ (.*)', data, re.M)
        if match:
            device_info['network_os_hostname'] = match.group(1)

        return device_info

    @enable_mode
    def get_config(self, source='running', flags=None):
        if source not in ('running', 'startup'):
            raise ValueError("fetching configuration from %s is not supported" % source)

        if source == 'running':
            cmd = 'show running-config '
        else:
            cmd = 'show startup-config '

        if flags:
            cmd += ' '.join(to_list(flags))
            cmd = cmd.strip()

        return self.send_command(cmd)

    @enable_mode
    def edit_config(self, commands):
        resp = {}

        results = []
        requests = []
        self.send_command('configure')
        for line in to_list(commands):
            if not isinstance(line, Mapping):
                line = {'command': line}

            cmd = line['command']
            if cmd != 'end' and cmd[0] != '!':
                results.append(self.send_command(**line))
                requests.append(cmd)

        self.send_command('end')

        resp['request'] = requests
        resp['response'] = results
        return resp

    def get(self, command=None, prompt=None, answer=None, sendonly=False, newline=True, output=None, check_all=False):
        if not command:
            raise ValueError('must provide value of command to execute')
        if output:
            raise ValueError("'output' value %s is not supported for get" % output)

        return self.send_command(command=command, prompt=prompt, answer=answer, sendonly=sendonly, newline=newline, check_all=check_all)

    def get_capabilities(self):
        result = super(Cliconf, self).get_capabilities()
        result['rpc'] += ['run_commands']
        return json.dumps(result)

    def run_commands(self, commands=None, check_rc=True):
        if commands is None:
            raise ValueError("'commands' value is required")

        responses = list()
        for cmd in to_list(commands):
            if not isinstance(cmd, Mapping):
                cmd = {'command': cmd}

            output = cmd.pop('output', None)
            if output:
                raise ValueError("'output' value %s is not supported for run_commands" % output)

            try:
                out = self.send_command(**cmd)
            except AnsibleConnectionFailure as e:
                if check_rc:
                    raise
                out = getattr(e, 'err', e)

            responses.append(out)

        return responses
