"""Unit tests for Superset"""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from __future__ import unicode_literals

from datetime import datetime
import json
import unittest

from mock import Mock, patch

from superset import db, security, sm
from superset.connectors.druid.models import (
    DruidCluster, DruidDatasource,
)
from .base_tests import SupersetTestCase


class PickableMock(Mock):
    def __reduce__(self):
        return (Mock, ())


SEGMENT_METADATA = [{
    'id': 'some_id',
    'intervals': ['2013-05-13T00:00:00.000Z/2013-05-14T00:00:00.000Z'],
    'columns': {
        '__time': {
            'type': 'LONG', 'hasMultipleValues': False,
            'size': 407240380, 'cardinality': None, 'errorMessage': None},
        'dim1': {
            'type': 'STRING', 'hasMultipleValues': False,
            'size': 100000, 'cardinality': 1944, 'errorMessage': None},
        'dim2': {
            'type': 'STRING', 'hasMultipleValues': True,
            'size': 100000, 'cardinality': 1504, 'errorMessage': None},
        'metric1': {
            'type': 'FLOAT', 'hasMultipleValues': False,
            'size': 100000, 'cardinality': None, 'errorMessage': None},
    },
    'aggregators': {
        'metric1': {
            'type': 'longSum',
            'name': 'metric1',
            'fieldName': 'metric1'},
    },
    'size': 300000,
    'numRows': 5000000,
}]

GB_RESULT_SET = [
    {
        'version': 'v1',
        'timestamp': '2012-01-01T00:00:00.000Z',
        'event': {
            'dim1': 'Canada',
            'metric1': 12345678,
        },
    },
    {
        'version': 'v1',
        'timestamp': '2012-01-01T00:00:00.000Z',
        'event': {
            'dim1': 'USA',
            'metric1': 12345678 / 2,
        },
    },
]


class DruidTests(SupersetTestCase):

    """Testing interactions with Druid"""

    def __init__(self, *args, **kwargs):
        super(DruidTests, self).__init__(*args, **kwargs)

    @patch('superset.connectors.druid.models.PyDruid')
    def test_client(self, PyDruid):
        self.login(username='admin')
        instance = PyDruid.return_value
        instance.time_boundary.return_value = [
            {'result': {'maxTime': '2016-01-01'}}]
        instance.segment_metadata.return_value = SEGMENT_METADATA

        cluster = (
            db.session
            .query(DruidCluster)
            .filter_by(cluster_name='test_cluster')
            .first()
        )
        if cluster:
            db.session.delete(cluster)
        db.session.commit()

        cluster = DruidCluster(
            cluster_name='test_cluster',
            coordinator_host='localhost',
            coordinator_port=7979,
            broker_host='localhost',
            broker_port=7980,
            metadata_last_refreshed=datetime.now())

        db.session.add(cluster)
        cluster.get_datasources = PickableMock(return_value=['test_datasource'])
        cluster.get_druid_version = PickableMock(return_value='0.9.1')
        cluster.refresh_datasources()
        cluster.refresh_datasources(merge_flag=True)
        datasource_id = cluster.datasources[0].id
        db.session.commit()

        nres = [
            list(v['event'].items()) + [('timestamp', v['timestamp'])]
            for v in GB_RESULT_SET]
        nres = [dict(v) for v in nres]
        import pandas as pd
        df = pd.DataFrame(nres)
        instance.export_pandas.return_value = df
        instance.query_dict = {}
        instance.query_builder.last_query.query_dict = {}

        resp = self.get_resp('/superset/explore/druid/{}/'.format(
            datasource_id))
        self.assertIn('test_datasource', resp)
        form_data = {
            'viz_type': 'table',
            'granularity': 'one+day',
            'druid_time_origin': '',
            'since': '7+days+ago',
            'until': 'now',
            'row_limit': 5000,
            'include_search': 'false',
            'metrics': ['count'],
            'groupby': ['dim1'],
            'force': 'true',
        }
        # One groupby
        url = ('/superset/explore_json/druid/{}/'.format(datasource_id))
        resp = self.get_json_resp(url, {'form_data': json.dumps(form_data)})
        self.assertEqual('Canada', resp['data']['records'][0]['dim1'])

        form_data = {
            'viz_type': 'table',
            'granularity': 'one+day',
            'druid_time_origin': '',
            'since': '7+days+ago',
            'until': 'now',
            'row_limit': 5000,
            'include_search': 'false',
            'metrics': ['count'],
            'groupby': ['dim1', 'dim2d'],
            'force': 'true',
        }
        # two groupby
        url = ('/superset/explore_json/druid/{}/'.format(datasource_id))
        resp = self.get_json_resp(url, {'form_data': json.dumps(form_data)})
        self.assertEqual('Canada', resp['data']['records'][0]['dim1'])

    def test_druid_sync_from_config(self):
        CLUSTER_NAME = 'new_druid'
        self.login()
        cluster = self.get_or_create(
            DruidCluster,
            {'cluster_name': CLUSTER_NAME},
            db.session)

        db.session.merge(cluster)
        db.session.commit()

        ds = (
            db.session.query(DruidDatasource)
            .filter_by(datasource_name='test_click')
            .first()
        )
        if ds:
            db.session.delete(ds)
        db.session.commit()

        cfg = {
            'user': 'admin',
            'cluster': CLUSTER_NAME,
            'config': {
                'name': 'test_click',
                'dimensions': ['affiliate_id', 'campaign', 'first_seen'],
                'metrics_spec': [{'type': 'count', 'name': 'count'},
                                 {'type': 'sum', 'name': 'sum'}],
                'batch_ingestion': {
                    'sql': "SELECT * FROM clicks WHERE d='{{ ds }}'",
                    'ts_column': 'd',
                    'sources': [{
                        'table': 'clicks',
                        'partition': "d='{{ ds }}'",
                    }],
                },
            },
        }

        def check():
            resp = self.client.post('/superset/sync_druid/', data=json.dumps(cfg))
            druid_ds = (
                db.session
                .query(DruidDatasource)
                .filter_by(datasource_name='test_click')
                .one()
            )
            col_names = set([c.column_name for c in druid_ds.columns])
            assert {'affiliate_id', 'campaign', 'first_seen'} == col_names
            metric_names = {m.metric_name for m in druid_ds.metrics}
            assert {'count', 'sum'} == metric_names
            assert resp.status_code == 201

        check()
        # checking twice to make sure a second sync yields the same results
        check()

        # datasource exists, add new metrics and dimensions
        cfg = {
            'user': 'admin',
            'cluster': CLUSTER_NAME,
            'config': {
                'name': 'test_click',
                'dimensions': ['affiliate_id', 'second_seen'],
                'metrics_spec': [
                    {'type': 'bla', 'name': 'sum'},
                    {'type': 'unique', 'name': 'unique'},
                ],
            },
        }
        resp = self.client.post('/superset/sync_druid/', data=json.dumps(cfg))
        druid_ds = db.session.query(DruidDatasource).filter_by(
            datasource_name='test_click').one()
        # columns and metrics are not deleted if config is changed as
        # user could define his own dimensions / metrics and want to keep them
        assert set([c.column_name for c in druid_ds.columns]) == set(
            ['affiliate_id', 'campaign', 'first_seen', 'second_seen'])
        assert set([m.metric_name for m in druid_ds.metrics]) == set(
            ['count', 'sum', 'unique'])
        # metric type will not be overridden, sum stays instead of bla
        assert set([m.metric_type for m in druid_ds.metrics]) == set(
            ['longSum', 'sum', 'unique'])
        assert resp.status_code == 201

    def test_filter_druid_datasource(self):
        CLUSTER_NAME = 'new_druid'
        cluster = self.get_or_create(
            DruidCluster,
            {'cluster_name': CLUSTER_NAME},
            db.session)
        db.session.merge(cluster)

        gamma_ds = self.get_or_create(
            DruidDatasource, {'datasource_name': 'datasource_for_gamma'},
            db.session)
        gamma_ds.cluster = cluster
        db.session.merge(gamma_ds)

        no_gamma_ds = self.get_or_create(
            DruidDatasource, {'datasource_name': 'datasource_not_for_gamma'},
            db.session)
        no_gamma_ds.cluster = cluster
        db.session.merge(no_gamma_ds)
        db.session.commit()

        security.merge_perm(sm, 'datasource_access', gamma_ds.perm)
        security.merge_perm(sm, 'datasource_access', no_gamma_ds.perm)

        perm = sm.find_permission_view_menu(
            'datasource_access', gamma_ds.get_perm())
        sm.add_permission_role(sm.find_role('Gamma'), perm)
        sm.get_session.commit()

        self.login(username='gamma')
        url = '/druiddatasourcemodelview/list/'
        resp = self.get_resp(url)
        self.assertIn('datasource_for_gamma', resp)
        self.assertNotIn('datasource_not_for_gamma', resp)

    @patch('superset.connectors.druid.models.PyDruid')
    def test_sync_druid_perm(self, PyDruid):
        self.login(username='admin')
        instance = PyDruid.return_value
        instance.time_boundary.return_value = [
            {'result': {'maxTime': '2016-01-01'}}]
        instance.segment_metadata.return_value = SEGMENT_METADATA

        cluster = (
            db.session
            .query(DruidCluster)
            .filter_by(cluster_name='test_cluster')
            .first()
        )
        if cluster:
            db.session.delete(cluster)
        db.session.commit()

        cluster = DruidCluster(
            cluster_name='test_cluster',
            coordinator_host='localhost',
            coordinator_port=7979,
            broker_host='localhost',
            broker_port=7980,
            metadata_last_refreshed=datetime.now())

        db.session.add(cluster)
        cluster.get_datasources = PickableMock(
            return_value=['test_datasource'],
        )
        cluster.get_druid_version = PickableMock(return_value='0.9.1')

        cluster.refresh_datasources()
        cluster.datasources[0].merge_flag = True
        metadata = cluster.datasources[0].latest_metadata()
        self.assertEqual(len(metadata), 4)
        db.session.commit()

        view_menu_name = cluster.datasources[0].get_perm()
        view_menu = sm.find_view_menu(view_menu_name)
        permission = sm.find_permission('datasource_access')

        pv = sm.get_session.query(sm.permissionview_model).filter_by(
            permission=permission, view_menu=view_menu).first()
        assert pv is not None


if __name__ == '__main__':
    unittest.main()