# Copyright (c) 2016 IBM
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from openstack.cloud import exc
from openstack.tests.functional import base


class TestRangeSearch(base.BaseFunctionalTest):
    def _filter_m1_flavors(self, results):
        """The m1 flavors are the original devstack flavors"""
        new_results = []
        for flavor in results:
            if flavor['name'].startswith("m1."):
                new_results.append(flavor)
        return new_results

    def test_range_search_bad_range(self):
        flavors = self.user_cloud.list_flavors(get_extra=False)
        self.assertRaises(
            exc.OpenStackCloudException,
            self.user_cloud.range_search,
            flavors,
            {"ram": "<1a0"},
        )

    def test_range_search_exact(self):
        flavors = self.user_cloud.list_flavors(get_extra=False)
        result = self.user_cloud.range_search(flavors, {"ram": "4096"})
        self.assertIsInstance(result, list)
        # should only be 1 m1 flavor with 4096 ram
        result = self._filter_m1_flavors(result)
        self.assertEqual(1, len(result))
        self.assertEqual("m1.medium", result[0]['name'])

    def test_range_search_min(self):
        flavors = self.user_cloud.list_flavors(get_extra=False)
        result = self.user_cloud.range_search(flavors, {"ram": "MIN"})
        self.assertIsInstance(result, list)
        self.assertEqual(1, len(result))
        # older devstack does not have cirros256
        self.assertIn(result[0]['name'], ('cirros256', 'm1.tiny'))

    def test_range_search_max(self):
        flavors = self.user_cloud.list_flavors(get_extra=False)
        result = self.user_cloud.range_search(flavors, {"ram": "MAX"})
        self.assertIsInstance(result, list)
        self.assertEqual(1, len(result))
        self.assertEqual("m1.xlarge", result[0]['name'])

    def test_range_search_lt(self):
        flavors = self.user_cloud.list_flavors(get_extra=False)
        result = self.user_cloud.range_search(flavors, {"ram": "<1024"})
        self.assertIsInstance(result, list)
        # should only be 1 m1 flavor with <1024 ram
        result = self._filter_m1_flavors(result)
        self.assertEqual(1, len(result))
        self.assertEqual("m1.tiny", result[0]['name'])

    def test_range_search_gt(self):
        flavors = self.user_cloud.list_flavors(get_extra=False)
        result = self.user_cloud.range_search(flavors, {"ram": ">4096"})
        self.assertIsInstance(result, list)
        # should only be 2 m1 flavors with >4096 ram
        result = self._filter_m1_flavors(result)
        self.assertEqual(2, len(result))
        flavor_names = [r['name'] for r in result]
        self.assertIn("m1.large", flavor_names)
        self.assertIn("m1.xlarge", flavor_names)

    def test_range_search_le(self):
        flavors = self.user_cloud.list_flavors(get_extra=False)
        result = self.user_cloud.range_search(flavors, {"ram": "<=4096"})
        self.assertIsInstance(result, list)
        # should only be 3 m1 flavors with <=4096 ram
        result = self._filter_m1_flavors(result)
        self.assertEqual(3, len(result))
        flavor_names = [r['name'] for r in result]
        self.assertIn("m1.tiny", flavor_names)
        self.assertIn("m1.small", flavor_names)
        self.assertIn("m1.medium", flavor_names)

    def test_range_search_ge(self):
        flavors = self.user_cloud.list_flavors(get_extra=False)
        result = self.user_cloud.range_search(flavors, {"ram": ">=4096"})
        self.assertIsInstance(result, list)
        # should only be 3 m1 flavors with >=4096 ram
        result = self._filter_m1_flavors(result)
        self.assertEqual(3, len(result))
        flavor_names = [r['name'] for r in result]
        self.assertIn("m1.medium", flavor_names)
        self.assertIn("m1.large", flavor_names)
        self.assertIn("m1.xlarge", flavor_names)

    def test_range_search_multi_1(self):
        flavors = self.user_cloud.list_flavors(get_extra=False)
        result = self.user_cloud.range_search(
            flavors, {"ram": "MIN", "vcpus": "MIN"}
        )
        self.assertIsInstance(result, list)
        self.assertEqual(1, len(result))
        # older devstack does not have cirros256
        self.assertIn(result[0]['name'], ('cirros256', 'm1.tiny'))

    def test_range_search_multi_2(self):
        flavors = self.user_cloud.list_flavors(get_extra=False)
        result = self.user_cloud.range_search(
            flavors, {"ram": "<1024", "vcpus": "MIN"}
        )
        self.assertIsInstance(result, list)
        result = self._filter_m1_flavors(result)
        self.assertEqual(1, len(result))
        flavor_names = [r['name'] for r in result]
        self.assertIn("m1.tiny", flavor_names)

    def test_range_search_multi_3(self):
        flavors = self.user_cloud.list_flavors(get_extra=False)
        result = self.user_cloud.range_search(
            flavors, {"ram": ">=4096", "vcpus": "<6"}
        )
        self.assertIsInstance(result, list)
        result = self._filter_m1_flavors(result)
        self.assertEqual(2, len(result))
        flavor_names = [r['name'] for r in result]
        self.assertIn("m1.medium", flavor_names)
        self.assertIn("m1.large", flavor_names)

    def test_range_search_multi_4(self):
        flavors = self.user_cloud.list_flavors(get_extra=False)
        result = self.user_cloud.range_search(
            flavors, {"ram": ">=4096", "vcpus": "MAX"}
        )
        self.assertIsInstance(result, list)
        self.assertEqual(1, len(result))
        # This is the only result that should have max vcpu
        self.assertEqual("m1.xlarge", result[0]['name'])
