# SPDX-License-Identifier: Apache-2.0
# The OpenSearch Contributors require contributions made to
# this file be licensed under the Apache-2.0 license or a
# compatible open source license.
# Any modifications Copyright OpenSearch Contributors. See
# GitHub history for details.

#  Licensed to Elasticsearch B.V. under one or more contributor
#  license agreements. See the NOTICE file distributed with
#  this work for additional information regarding copyright
#  ownership. Elasticsearch B.V. licenses this file to you 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.

# File called _pytest for PyCharm compatability

import numpy as np

from opensearch_py_ml.field_mappings import FieldMappings
from tests import ECOMMERCE_INDEX_NAME, FLIGHTS_INDEX_NAME, OPENSEARCH_TEST_CLIENT
from tests.common import TestData


class TestMetricSourceFields(TestData):
    def test_flights_all_metric_source_fields(self):
        oml_field_mappings = FieldMappings(
            client=OPENSEARCH_TEST_CLIENT, index_pattern=FLIGHTS_INDEX_NAME
        )
        pd_flights = self.pd_flights()

        (
            oml_dtypes,
            oml_fields,
            os_date_formats,
        ) = oml_field_mappings.metric_source_fields()
        pd_metric = pd_flights.select_dtypes(include=np.number)

        assert pd_metric.dtypes.to_list() == oml_dtypes
        assert pd_metric.columns.to_list() == oml_fields
        assert len(os_date_formats) == len(oml_dtypes)
        assert set(os_date_formats) == {None}

    def test_flights_all_metric_source_fields_and_bool(self):
        oml_field_mappings = FieldMappings(
            client=OPENSEARCH_TEST_CLIENT, index_pattern=FLIGHTS_INDEX_NAME
        )
        pd_flights = self.pd_flights()

        (
            oml_dtypes,
            oml_fields,
            os_date_formats,
        ) = oml_field_mappings.metric_source_fields(include_bool=True)
        pd_metric = pd_flights.select_dtypes(include=[np.number, "bool"])

        assert pd_metric.dtypes.to_list() == oml_dtypes
        assert pd_metric.columns.to_list() == oml_fields
        assert len(os_date_formats) == len(oml_dtypes)
        assert set(os_date_formats) == {None}

    def test_flights_all_metric_source_fields_bool_and_timestamp(self):
        oml_field_mappings = FieldMappings(
            client=OPENSEARCH_TEST_CLIENT, index_pattern=FLIGHTS_INDEX_NAME
        )
        pd_flights = self.pd_flights()

        (
            oml_dtypes,
            oml_fields,
            os_date_formats,
        ) = oml_field_mappings.metric_source_fields(
            include_bool=True, include_timestamp=True
        )
        pd_metric = pd_flights.select_dtypes(include=[np.number, "bool", "datetime"])

        assert pd_metric.dtypes.to_list() == oml_dtypes
        assert pd_metric.columns.to_list() == oml_fields
        assert len(os_date_formats) == len(oml_dtypes)
        assert set(os_date_formats) == set(
            {"strict_date_hour_minute_second", None}
        )  # TODO - test position of date_format

    def test_ecommerce_selected_non_metric_source_fields(self):
        field_names = [
            "category",
            "currency",
            "customer_first_name",
            "user",
        ]
        """
        Note: non of there are metric
        category                       object
        currency                       object
        customer_first_name            object
        user                           object
        """
        oml_field_mappings = FieldMappings(
            client=OPENSEARCH_TEST_CLIENT,
            index_pattern=ECOMMERCE_INDEX_NAME,
            display_names=field_names,
        )
        pd_ecommerce = self.pd_ecommerce()[field_names]

        (
            oml_dtypes,
            oml_fields,
            os_date_formats,
        ) = oml_field_mappings.metric_source_fields()
        pd_metric = pd_ecommerce.select_dtypes(include=np.number)

        assert pd_metric.dtypes.to_list() == oml_dtypes
        assert pd_metric.columns.to_list() == oml_fields
        assert len(os_date_formats) == len(oml_dtypes)
        assert set(os_date_formats) == set()

    def test_ecommerce_selected_mixed_metric_source_fields(self):
        field_names = [
            "category",
            "currency",
            "customer_first_name",
            "total_quantity",
            "user",
        ]
        """
        Note: one is metric
        category                       object
        currency                       object
        customer_first_name            object
        total_quantity                 int64
        user                           object
        """
        oml_field_mappings = FieldMappings(
            client=OPENSEARCH_TEST_CLIENT,
            index_pattern=ECOMMERCE_INDEX_NAME,
            display_names=field_names,
        )
        pd_ecommerce = self.pd_ecommerce()[field_names]

        (
            oml_dtypes,
            oml_fields,
            os_date_formats,
        ) = oml_field_mappings.metric_source_fields()
        pd_metric = pd_ecommerce.select_dtypes(include=np.number)
        assert len(os_date_formats) == len(oml_dtypes)
        assert set(os_date_formats) == {None}

        assert pd_metric.dtypes.to_list() == oml_dtypes
        assert pd_metric.columns.to_list() == oml_fields

    def test_ecommerce_selected_all_metric_source_fields(self):
        field_names = ["total_quantity", "taxful_total_price", "taxless_total_price"]
        """
        Note: all are metric
        total_quantity           int64
        taxful_total_price     float64
        taxless_total_price    float64
        """
        oml_field_mappings = FieldMappings(
            client=OPENSEARCH_TEST_CLIENT,
            index_pattern=ECOMMERCE_INDEX_NAME,
            display_names=field_names,
        )
        pd_ecommerce = self.pd_ecommerce()[field_names]

        (
            oml_dtypes,
            oml_fields,
            os_date_formats,
        ) = oml_field_mappings.metric_source_fields()
        pd_metric = pd_ecommerce.select_dtypes(include=np.number)

        assert pd_metric.dtypes.to_list() == oml_dtypes
        assert pd_metric.columns.to_list() == oml_fields
        assert len(os_date_formats) == len(oml_dtypes)
        assert set(os_date_formats) == {None}