#  Copyright 2021 Collate
#  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.
"""
Test helpers module
"""
import uuid
from unittest import TestCase

from metadata.generated.schema.entity.data.table import Column, DataType, Table
from metadata.generated.schema.type.tagLabel import (
    LabelType,
    State,
    TagLabel,
    TagSource,
)
from metadata.utils.helpers import (
    clean_up_starting_ending_double_quotes_in_string,
    deep_size_of_dict,
    format_large_string_numbers,
    get_entity_tier_from_tags,
    is_safe_sql_query,
    list_to_dict,
)


class TestHelpers(TestCase):
    """
    Test helpers module
    """

    def test_list_to_dict(self):
        original = ["key=value", "a=b"]

        self.assertEqual(list_to_dict(original=original), {"key": "value", "a": "b"})
        self.assertEqual(list_to_dict([]), {})
        self.assertEqual(list_to_dict(None), {})

    def test_clean_up_starting_ending_double_quotes_in_string(self):
        input_ = '"password"'
        output_ = "password"

        assert clean_up_starting_ending_double_quotes_in_string(input_) == output_

    def test_get_entity_tier_from_tags(self):
        """test correct entity tier are returned"""
        table_entity_w_tier = Table(
            id=uuid.uuid4(),
            name="table_entity_test",
            columns=[Column(name="col1", dataType=DataType.STRING)],
            tags=[
                TagLabel(
                    tagFQN="Tier.Tier1",
                    source=TagSource.Classification,
                    labelType=LabelType.Automated,
                    state=State.Confirmed,
                ),
                TagLabel(
                    tagFQN="Foo.Bar",
                    source=TagSource.Classification,
                    labelType=LabelType.Automated,
                    state=State.Confirmed,
                ),
            ],
        )

        assert get_entity_tier_from_tags(table_entity_w_tier.tags) == "Tier.Tier1"

        table_entity_wo_tier = Table(
            id=uuid.uuid4(),
            name="table_entity_test",
            columns=[Column(name="col1", dataType=DataType.STRING)],
            tags=[
                TagLabel(
                    tagFQN="Foo.Bar",
                    source=TagSource.Classification,
                    labelType=LabelType.Automated,
                    state=State.Confirmed,
                )
            ],
        )

        assert get_entity_tier_from_tags(table_entity_wo_tier.tags) is None

    def test_deep_size_of_dict(self):
        """test deep size of dict"""
        test_dict = {
            "a": 1,
            "b": {"c": 2, "d": {"e": "Hello World", "f": [4, 5, 6]}},
        }

        assert deep_size_of_dict(test_dict) >= 1000
        assert deep_size_of_dict(test_dict) <= 1500

    def test_is_safe_sql_query(self):
        """Test is_safe_sql_query function"""

        delete_query = """
         DELETE FROM airflow_task_instance
         WHERE dag_id = 'test_dag_id'
         """

        drop_query = """
         DROP TABLE IF EXISTS test_table
         """

        create_query = """
         CREATE TABLE test_table (
             id INT,
             name VARCHAR(255)
         )
         """

        select_query = """
         SELECT * FROM test_table
         """

        cte_query = """
         WITH foo AS (
             SELECT * FROM test_table
         )
         SELECT * FROM foo
         """

        transaction_query = """
         BEGIN TRAN T1;  
             UPDATE table1 ...;  
             BEGIN TRAN M2 WITH MARK;  
                 UPDATE table2 ...;  
                 SELECT * from table1;  
             COMMIT TRAN M2;  
             UPDATE table3 ...;  
         COMMIT TRAN T1;  
         """

        self.assertFalse(is_safe_sql_query(delete_query))
        self.assertFalse(is_safe_sql_query(drop_query))
        self.assertFalse(is_safe_sql_query(create_query))
        self.assertTrue(is_safe_sql_query(select_query))
        self.assertTrue(is_safe_sql_query(cte_query))
        self.assertFalse(is_safe_sql_query(transaction_query))

    def test_format_large_string_numbers(self):
        """test format_large_string_numbers"""
        assert format_large_string_numbers(1000) == "1.000K"
        assert format_large_string_numbers(1001) == "1.001K"
        assert format_large_string_numbers(1000000) == "1.000M"
        assert format_large_string_numbers(1000000000) == "1.000B"
        assert format_large_string_numbers(1000000000000) == "1.000T"