from aiohttp import web

from .MockHTTPServerBase import MockHTTPServerBase


class MockMailmanServer(MockHTTPServerBase):
    def __init__(self, port=8001, prefix='/3.1'):
        routes = [
            web.post(prefix + '/members', self.subscribe),
            web.delete(prefix + '/lists/{mailing_list}/member/{address}', self.unsubscribe),
        ]
        super().__init__(port, routes)

        # add more as necessary
        self.subscriptions = {
            'csc-general': [],
            'exec': [],
            'syscom': [],
            'syscom-alerts': [],
        }

    def clear(self):
        for key in self.subscriptions:
            self.subscriptions[key].clear()

    async def subscribe(self, request):
        body = await request.post()
        subscriber = body['subscriber']
        list_id = body['list_id']
        list_id = list_id[:list_id.index('.')]
        if list_id not in self.subscriptions:
            return web.json_response({
                'description': 'No such list',
            }, status=400)
        subscribers = self.subscriptions[list_id]
        if subscriber in subscribers:
            return web.json_response({
                'description': 'user is already subscribed',
            }, status=409)
        subscribers.append(subscriber)
        return web.json_response({'status': 'OK'})

    async def unsubscribe(self, request):
        subscriber = request.match_info['address']
        list_id = request.match_info['mailing_list']
        list_id = list_id[:list_id.index('@')]
        subscribers = self.subscriptions.get(list_id, [])
        if subscriber not in subscribers:
            return web.json_response({
                'description': 'user is not subscribed',
            }, status=404)
        subscribers.remove(subscriber)
        return web.json_response({'status': 'OK'})


if __name__ == '__main__':
    server = MockMailmanServer()
    server.start()