from typing import Dict

from ...controller import Controller
from ...register import register
from ...context import Context
from ...utils import _


class Risotto(Controller):
    @register('v1.server.list')
    async def server_list(self,
                          risotto_context: Context) -> Dict:
        sql = '''
        SELECT ServerId as server_id, ServerName as server_name, ServerDescription as server_description, ServerServermodelId as server_servermodel_id
        FROM Server
        '''
        servers = await risotto_context.connection.fetch(sql)
        return [dict(r) for r in servers]

    @register('v1.server.create', 'v1.server.created')
    async def server_create(self,
                            risotto_context: Context,
                            server_name: str,
                            server_description: str,
                            servermodel_name: str,
                            source_name: str,
                            release_distribution: str) -> Dict:
        servermodel = await self.call('v1.servermodel.describe',
                                      risotto_context,
                                      servermodel_name=servermodel_name,
                                      source_name=source_name,
                                      release_distribution=release_distribution)
        server_insert = """INSERT INTO Server(ServerName, ServerDescription, ServerServermodelId)
        VALUES ($1,$2,$3)
        RETURNING ServerId
        """
        server_id = await risotto_context.connection.fetchval(server_insert,
                                                              server_name,
                                                              server_description,
                                                              servermodel['servermodel_id'])
        await self.call('v1.user.role.create',
                        risotto_context,
                        user_login=risotto_context.username,
                        role_name='server_rw',
                        role_attribute='Server.ServerName',
                        role_attribute_value=server_name)
        return {'server_id': server_id,
                'server_name': server_name,
                'server_description': server_description,
                'server_servermodel_id': servermodel['servermodel_id']}

    @register('v1.server.describe')
    async def server_describe(self,
                              risotto_context: Context,
                              server_name: str) -> Dict:
        sql = '''
        SELECT ServerId as server_id, ServerName as server_name, ServerDescription as server_description, ServerServermodelId as server_servermodel_id
        FROM Server
        WHERE ServerName = $1
        '''
        server = await risotto_context.connection.fetchrow(sql,
                                                           server_name)
        if not server:
            raise Exception(_(f'unable to find server with name {server_name}'))
        return dict(server)