# Source code for watchme.watchers.urls

    '''

    Copyright (C) 2019 Vanessa Sochat.

    This Source Code Form is subject to the terms of the
    Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed
    with this file, You can obtain one at http://mozilla.org/MPL/2.0/.

    '''

    from watchme.tasks import TaskBase
    from watchme.logger import bot
    import os
    import sys

    class Task(TaskBase):

        required_params = ['url']

        def __init__(self, name, params=None, **kwargs):

            if params is None:
                params = {}

            self.type = 'urls'

            # Handles setting the name, setting params, and validate
            super(Task, self).__init__(name, params, **kwargs)

        def _validate(self):
            '''additional validation function, called by validate() of
               superclass. Here we assume all required self.params are included.
               If an parameter is found to be invalid, self.valid should be set
               to False
            '''
            # The url must begin with http
            if not self.params['url'].startswith('http'):
                bot.error('%s is not a valid url.' % self.params['url'])
                self.valid = False

        def export_func(self):
            '''this function should return the correct task (from the tasks.py
               in the same folder) based on some logic of the params that are given
               by the user (self.params). If there is only one kind of function for
               the task, it's fairly easy to import and return it here. This
               function should take no arguments, but instead use the self.params
               already provided in the client.
            '''
            name = self.params.get('func', 'get_task')

            if name == 'get_task':
                from .tasks import get_task as func
            elif name == 'download_task':
                from .tasks import download_task as func
            elif name == 'post_task':
                from .tasks import post_task as func
            elif name == "get_url_selection":
                from .tasks import get_url_selection as func
            else:
                func = None

            bot.debug('function name is %s' % name)
            return func