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

import json
import os
import subprocess
import time
import unittest

import pandas as pd
from past.builtins import basestring

from superset import app, appbuilder, cli, dataframe, db
from superset.models.helpers import QueryStatus
from superset.models.sql_lab import Query
from superset.security import sync_role_definitions
from superset.sql_parse import SupersetQuery
from .base_tests import SupersetTestCase


BASE_DIR = app.config.get('BASE_DIR')


class CeleryConfig(object):
    BROKER_URL = 'sqla+sqlite:///' + app.config.get('SQL_CELERY_DB_FILE_PATH')
    CELERY_IMPORTS = ('superset.sql_lab', )
    CELERY_RESULT_BACKEND = (
        'db+sqlite:///' + app.config.get('SQL_CELERY_RESULTS_DB_FILE_PATH'))
    CELERY_ANNOTATIONS = {'sql_lab.add': {'rate_limit': '10/s'}}
    CONCURRENCY = 1


app.config['CELERY_CONFIG'] = CeleryConfig


class UtilityFunctionTests(SupersetTestCase):

    # TODO(bkyryliuk): support more cases in CTA function.
    def test_create_table_as(self):
        q = SupersetQuery('SELECT * FROM outer_space;')

        self.assertEqual(
            'CREATE TABLE tmp AS \nSELECT * FROM outer_space',
            q.as_create_table('tmp'))

        self.assertEqual(
            'DROP TABLE IF EXISTS tmp;\n'
            'CREATE TABLE tmp AS \nSELECT * FROM outer_space',
            q.as_create_table('tmp', overwrite=True))

        # now without a semicolon
        q = SupersetQuery('SELECT * FROM outer_space')
        self.assertEqual(
            'CREATE TABLE tmp AS \nSELECT * FROM outer_space',
            q.as_create_table('tmp'))

        # now a multi-line query
        multi_line_query = (
            'SELECT * FROM planets WHERE\n'
            "Luke_Father = 'Darth Vader'")
        q = SupersetQuery(multi_line_query)
        self.assertEqual(
            'CREATE TABLE tmp AS \nSELECT * FROM planets WHERE\n'
            "Luke_Father = 'Darth Vader'",
            q.as_create_table('tmp'),
        )


class CeleryTestCase(SupersetTestCase):
    def __init__(self, *args, **kwargs):
        super(CeleryTestCase, self).__init__(*args, **kwargs)
        self.client = app.test_client()

    def get_query_by_name(self, sql):
        session = db.session
        query = session.query(Query).filter_by(sql=sql).first()
        session.close()
        return query

    def get_query_by_id(self, id):
        session = db.session
        query = session.query(Query).filter_by(id=id).first()
        session.close()
        return query

    @classmethod
    def setUpClass(cls):
        try:
            os.remove(app.config.get('SQL_CELERY_DB_FILE_PATH'))
        except OSError as e:
            app.logger.warn(str(e))
        try:
            os.remove(app.config.get('SQL_CELERY_RESULTS_DB_FILE_PATH'))
        except OSError as e:
            app.logger.warn(str(e))

        sync_role_definitions()

        worker_command = BASE_DIR + '/bin/superset worker'
        subprocess.Popen(
            worker_command, shell=True, stdout=subprocess.PIPE)

        admin = appbuilder.sm.find_user('admin')
        if not admin:
            appbuilder.sm.add_user(
                'admin', 'admin', ' user', 'admin@fab.org',
                appbuilder.sm.find_role('Admin'),
                password='general')
        cli.load_examples(load_test_data=True)

    @classmethod
    def tearDownClass(cls):
        subprocess.call(
            "ps auxww | grep 'celeryd' | awk '{print $2}' | xargs kill -9",
            shell=True,
        )
        subprocess.call(
            "ps auxww | grep 'superset worker' | awk '{print $2}' | xargs kill -9",
            shell=True,
        )

    def run_sql(self, db_id, sql, client_id, cta='false', tmp_table='tmp',
                async='false'):
        self.login()
        resp = self.client.post(
            '/superset/sql_json/',
            data=dict(
                database_id=db_id,
                sql=sql,
                async=async,
                select_as_cta=cta,
                tmp_table_name=tmp_table,
                client_id=client_id,
            ),
        )
        self.logout()
        return json.loads(resp.data.decode('utf-8'))

    def test_add_limit_to_the_query(self):
        main_db = self.get_main_database(db.session)

        select_query = 'SELECT * FROM outer_space;'
        updated_select_query = main_db.wrap_sql_limit(select_query, 100)
        # Different DB engines have their own spacing while compiling
        # the queries, that's why ' '.join(query.split()) is used.
        # In addition some of the engines do not include OFFSET 0.
        self.assertTrue(
            'SELECT * FROM (SELECT * FROM outer_space;) AS inner_qry '
            'LIMIT 100' in ' '.join(updated_select_query.split()),
        )

        select_query_no_semicolon = 'SELECT * FROM outer_space'
        updated_select_query_no_semicolon = main_db.wrap_sql_limit(
            select_query_no_semicolon, 100)
        self.assertTrue(
            'SELECT * FROM (SELECT * FROM outer_space) AS inner_qry '
            'LIMIT 100' in
            ' '.join(updated_select_query_no_semicolon.split()),
        )

        multi_line_query = (
            "SELECT * FROM planets WHERE\n Luke_Father = 'Darth Vader';"
        )
        updated_multi_line_query = main_db.wrap_sql_limit(multi_line_query, 100)
        self.assertTrue(
            'SELECT * FROM (SELECT * FROM planets WHERE '
            "Luke_Father = 'Darth Vader';) AS inner_qry LIMIT 100" in
            ' '.join(updated_multi_line_query.split()),
        )

    def test_run_sync_query_dont_exist(self):
        main_db = self.get_main_database(db.session)
        db_id = main_db.id
        sql_dont_exist = 'SELECT name FROM table_dont_exist'
        result1 = self.run_sql(db_id, sql_dont_exist, '1', cta='true')
        self.assertTrue('error' in result1)

    def test_run_sync_query_cta(self):
        main_db = self.get_main_database(db.session)
        db_id = main_db.id
        eng = main_db.get_sqla_engine()
        perm_name = 'can_sql_json'
        sql_where = (
            "SELECT name FROM ab_permission WHERE name='{}'".format(perm_name))
        result2 = self.run_sql(
            db_id, sql_where, '2', tmp_table='tmp_table_2', cta='true')
        self.assertEqual(QueryStatus.SUCCESS, result2['query']['state'])
        self.assertEqual([], result2['data'])
        self.assertEqual([], result2['columns'])
        query2 = self.get_query_by_id(result2['query']['serverId'])

        # Check the data in the tmp table.
        df2 = pd.read_sql_query(sql=query2.select_sql, con=eng)
        data2 = df2.to_dict(orient='records')
        self.assertEqual([{'name': perm_name}], data2)

    def test_run_sync_query_cta_no_data(self):
        main_db = self.get_main_database(db.session)
        db_id = main_db.id
        sql_empty_result = 'SELECT * FROM ab_user WHERE id=666'
        result3 = self.run_sql(
            db_id, sql_empty_result, '3', tmp_table='tmp_table_3', cta='true')
        self.assertEqual(QueryStatus.SUCCESS, result3['query']['state'])
        self.assertEqual([], result3['data'])
        self.assertEqual([], result3['columns'])

        query3 = self.get_query_by_id(result3['query']['serverId'])
        self.assertEqual(QueryStatus.SUCCESS, query3.status)

    def test_run_async_query(self):
        main_db = self.get_main_database(db.session)
        eng = main_db.get_sqla_engine()
        sql_where = "SELECT name FROM ab_role WHERE name='Admin'"
        result = self.run_sql(
            main_db.id, sql_where, '4', async='true', tmp_table='tmp_async_1',
            cta='true')
        assert result['query']['state'] in (
            QueryStatus.PENDING, QueryStatus.RUNNING, QueryStatus.SUCCESS)

        time.sleep(1)

        query = self.get_query_by_id(result['query']['serverId'])
        df = pd.read_sql_query(query.select_sql, con=eng)
        self.assertEqual(QueryStatus.SUCCESS, query.status)
        self.assertEqual([{'name': 'Admin'}], df.to_dict(orient='records'))
        self.assertEqual(QueryStatus.SUCCESS, query.status)
        self.assertTrue('FROM tmp_async_1' in query.select_sql)
        self.assertTrue('LIMIT 666' in query.select_sql)
        self.assertEqual(
            'CREATE TABLE tmp_async_1 AS \nSELECT name FROM ab_role '
            "WHERE name='Admin'", query.executed_sql)
        self.assertEqual(sql_where, query.sql)
        self.assertEqual(0, query.rows)
        self.assertEqual(666, query.limit)
        self.assertEqual(False, query.limit_used)
        self.assertEqual(True, query.select_as_cta)
        self.assertEqual(True, query.select_as_cta_used)

    @staticmethod
    def de_unicode_dict(d):
        def str_if_basestring(o):
            if isinstance(o, basestring):
                return str(o)
            return o
        return {str_if_basestring(k): str_if_basestring(d[k]) for k in d}

    @classmethod
    def dictify_list_of_dicts(cls, l, k):
        return {str(o[k]): cls.de_unicode_dict(o) for o in l}

    def test_get_columns(self):
        main_db = self.get_main_database(db.session)
        df = main_db.get_df('SELECT * FROM multiformat_time_series', None)
        cdf = dataframe.SupersetDataFrame(df)

        # Making ordering non-deterministic
        cols = self.dictify_list_of_dicts(cdf.columns, 'name')

        if main_db.sqlalchemy_uri.startswith('sqlite'):
            self.assertEqual(self.dictify_list_of_dicts([
                {'is_date': True, 'type': 'STRING', 'name': 'ds',
                    'is_dim': False},
                {'is_date': True, 'type': 'STRING', 'name': 'ds2',
                    'is_dim': False},
                {'agg': 'sum', 'is_date': False, 'type': 'INT',
                    'name': 'epoch_ms', 'is_dim': False},
                {'agg': 'sum', 'is_date': False, 'type': 'INT',
                    'name': 'epoch_s', 'is_dim': False},
                {'is_date': True, 'type': 'STRING', 'name': 'string0',
                    'is_dim': False},
                {'is_date': False, 'type': 'STRING',
                    'name': 'string1', 'is_dim': True},
                {'is_date': True, 'type': 'STRING', 'name': 'string2',
                    'is_dim': False},
                {'is_date': False, 'type': 'STRING',
                    'name': 'string3', 'is_dim': True}], 'name'),
                cols,
            )
        else:
            self.assertEqual(self.dictify_list_of_dicts([
                {'is_date': True, 'type': 'DATETIME', 'name': 'ds',
                    'is_dim': False},
                {'is_date': True, 'type': 'DATETIME',
                    'name': 'ds2', 'is_dim': False},
                {'agg': 'sum', 'is_date': False, 'type': 'INT',
                    'name': 'epoch_ms', 'is_dim': False},
                {'agg': 'sum', 'is_date': False, 'type': 'INT',
                    'name': 'epoch_s', 'is_dim': False},
                {'is_date': True, 'type': 'STRING', 'name': 'string0',
                    'is_dim': False},
                {'is_date': False, 'type': 'STRING',
                    'name': 'string1', 'is_dim': True},
                {'is_date': True, 'type': 'STRING', 'name': 'string2',
                    'is_dim': False},
                {'is_date': False, 'type': 'STRING',
                    'name': 'string3', 'is_dim': True}], 'name'),
                cols,
            )


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