import json
from mattermostdriver import Driver
from ._utils import utils

misperrors = {'error': 'Error'}

# config fields that your code expects from the site admin
moduleconfig = {
    'params': {
        'mattermost_hostname': {
            'type': 'string',
            'description': 'The Mattermost domain',
            'value': 'example.mattermost.com',
        },
        'bot_access_token': {
            'type': 'string',
            'description': 'Access token generated when you created the bot account',
        },
        'channel_id': {
            'type': 'string',
            'description': 'The channel you added the bot to',
        },
        'message_template': {
            'type': 'large_string',
            'description': 'The template to be used to generate the message to be posted',
            'value': 'The **template** will be rendered using *Jinja2*!',
        },
    },
    # Blocking modules break the exection of the current of action
    'blocking': False,
    # Indicates whether parts of the data passed to this module should be filtered. Filtered data can be found under the `filteredItems` key
    'support_filters': True,
    # Indicates whether the data passed to this module should be compliant with the MISP core format
    'expect_misp_core_format': False,
}


# returns either "boolean" or "data"
# Boolean is used to simply signal that the execution has finished.
# For blocking modules the actual boolean value determines whether we break execution
returns = 'boolean'

moduleinfo = {'version': '0.1', 'author': 'Sami Mokaddem',
              'description': 'Simplistic module to send message to a Mattermost channel.',
              'module-type': ['action']}


def createPost(request):
    params = request['params']
    mm = Driver({
        'url': params['mattermost_hostname'],
        'token': params['bot_access_token'],
        'scheme': 'https',
        'basepath': '/api/v4',
        'port': 443,
    })
    mm.login()

    data = {}
    if 'matchingData' in request:
        data = request['matchingData']
    else:
        data = request['data']

    if params['message_template']:
        message = utils.renderTemplate(data, params['message_template'])
    else:
        message = '```\n{}\n```'.format(json.dumps(data))

    mm.posts.create_post(options={
        'channel_id': params['channel_id'],
        'message': message
    })
    return True


def handler(q=False):
    if q is False:
        return False
    request = json.loads(q)
    createPost(request)
    r = {"data": True}
    return r


def introspection():
    modulesetup = {}
    try:
        modulesetup['config'] = moduleconfig
    except NameError:
        pass
    return modulesetup


def version():
    moduleinfo['config'] = moduleconfig
    return moduleinfo