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#
#   http://www.apache.org/licenses/LICENSE-2.0
#
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from copy import deepcopy

import pytest

from superset.utils.core import (
    AdhocColumn,
    AdhocMetric,
    ExtraFiltersReasonType,
    ExtraFiltersTimeColumnType,
    GenericDataType,
    get_column_name,
    get_column_names,
    get_metric_name,
    get_metric_names,
    get_time_filter_status,
    is_adhoc_metric,
    NO_TIME_RANGE,
)
from tests.unit_tests.fixtures.datasets import get_dataset_mock

STR_METRIC = "my_metric"
SIMPLE_SUM_ADHOC_METRIC: AdhocMetric = {
    "aggregate": "SUM",
    "column": {
        "column_name": "my_col",
        "type": "INT",
        "type_generic": GenericDataType.NUMERIC,
    },
    "expressionType": "SIMPLE",
    "label": "my SUM",
}
SQL_ADHOC_METRIC: AdhocMetric = {
    "expressionType": "SQL",
    "label": "my_sql",
    "sqlExpression": "SUM(my_col)",
}
STR_COLUMN = "my_column"
SQL_ADHOC_COLUMN: AdhocColumn = {
    "hasCustomLabel": True,
    "label": "My Adhoc Column",
    "sqlExpression": "case when foo = 1 then 'foo' else 'bar' end",
}


def test_get_metric_name_saved_metric():
    assert get_metric_name(STR_METRIC) == "my_metric"
    assert get_metric_name(STR_METRIC, {STR_METRIC: "My Metric"}) == "My Metric"


def test_get_metric_name_adhoc():
    metric = deepcopy(SIMPLE_SUM_ADHOC_METRIC)
    assert get_metric_name(metric) == "my SUM"
    assert get_metric_name(metric, {"my SUM": "My Irrelevant Mapping"}) == "my SUM"
    del metric["label"]
    assert get_metric_name(metric) == "SUM(my_col)"
    metric["label"] = ""
    assert get_metric_name(metric) == "SUM(my_col)"
    del metric["aggregate"]
    assert get_metric_name(metric) == "my_col"
    metric["aggregate"] = ""
    assert get_metric_name(metric) == "my_col"
    assert get_metric_name(metric, {"my_col": "My Irrelevant Mapping"}) == "my_col"

    metric = deepcopy(SQL_ADHOC_METRIC)
    assert get_metric_name(metric) == "my_sql"
    assert get_metric_name(metric, {"my_sql": "My Irrelevant Mapping"}) == "my_sql"
    del metric["label"]
    assert get_metric_name(metric) == "SUM(my_col)"
    metric["label"] = ""
    assert get_metric_name(metric) == "SUM(my_col)"


def test_get_metric_name_invalid_metric():
    metric = deepcopy(SIMPLE_SUM_ADHOC_METRIC)
    del metric["label"]
    del metric["column"]
    with pytest.raises(ValueError):
        get_metric_name(metric)

    metric = deepcopy(SIMPLE_SUM_ADHOC_METRIC)
    del metric["label"]
    metric["expressionType"] = "FOO"
    with pytest.raises(ValueError):
        get_metric_name(metric)

    metric = deepcopy(SQL_ADHOC_METRIC)
    del metric["label"]
    metric["expressionType"] = "FOO"
    with pytest.raises(ValueError):
        get_metric_name(metric)


def test_get_metric_names():
    assert get_metric_names(
        [STR_METRIC, SIMPLE_SUM_ADHOC_METRIC, SQL_ADHOC_METRIC]
    ) == ["my_metric", "my SUM", "my_sql"]
    assert get_metric_names(
        [STR_METRIC, SIMPLE_SUM_ADHOC_METRIC, SQL_ADHOC_METRIC],
        {STR_METRIC: "My Metric"},
    ) == ["My Metric", "my SUM", "my_sql"]


def test_get_column_name_physical_column():
    assert get_column_name(STR_COLUMN) == "my_column"
    assert get_metric_name(STR_COLUMN, {STR_COLUMN: "My Column"}) == "My Column"


def test_get_column_name_adhoc():
    column = deepcopy(SQL_ADHOC_COLUMN)
    assert get_column_name(column) == "My Adhoc Column"
    assert (
        get_column_name(column, {"My Adhoc Column": "My Irrelevant Mapping"})
        == "My Adhoc Column"
    )
    del column["label"]
    assert get_column_name(column) == "case when foo = 1 then 'foo' else 'bar' end"
    column["label"] = ""
    assert get_column_name(column) == "case when foo = 1 then 'foo' else 'bar' end"


def test_get_column_names():
    assert get_column_names([STR_COLUMN, SQL_ADHOC_COLUMN]) == [
        "my_column",
        "My Adhoc Column",
    ]
    assert get_column_names(
        [STR_COLUMN, SQL_ADHOC_COLUMN], {"my_column": "My Column"},
    ) == ["My Column", "My Adhoc Column"]


def test_get_column_name_invalid_metric():
    column = deepcopy(SQL_ADHOC_COLUMN)
    del column["label"]
    del column["sqlExpression"]
    with pytest.raises(ValueError):
        get_column_name(column)


def test_is_adhoc_metric():
    assert is_adhoc_metric(STR_METRIC) is False
    assert is_adhoc_metric(SIMPLE_SUM_ADHOC_METRIC) is True
    assert is_adhoc_metric(SQL_ADHOC_METRIC) is True


def test_get_time_filter_status_time_col():
    dataset = get_dataset_mock()

    assert get_time_filter_status(
        dataset, {ExtraFiltersTimeColumnType.TIME_COL: "ds"}
    ) == ([{"column": ExtraFiltersTimeColumnType.TIME_COL}], [])


def test_get_time_filter_status_time_range():
    dataset = get_dataset_mock()

    assert get_time_filter_status(
        dataset, {ExtraFiltersTimeColumnType.TIME_RANGE: "1 year ago"}
    ) == ([{"column": ExtraFiltersTimeColumnType.TIME_RANGE}], [])


def test_get_time_filter_status_time_grain():
    dataset = get_dataset_mock()

    assert get_time_filter_status(
        dataset, {ExtraFiltersTimeColumnType.TIME_GRAIN: "PT1M"}
    ) == ([{"column": ExtraFiltersTimeColumnType.TIME_GRAIN}], [])


def test_get_time_filter_status_no_temporal_col():
    dataset = get_dataset_mock()
    dataset.columns[0].is_dttm = False

    assert get_time_filter_status(
        dataset, {ExtraFiltersTimeColumnType.TIME_COL: "foobar"}
    ) == (
        [],
        [
            {
                "reason": ExtraFiltersReasonType.COL_NOT_IN_DATASOURCE,
                "column": ExtraFiltersTimeColumnType.TIME_COL,
            }
        ],
    )

    assert get_time_filter_status(
        dataset, {ExtraFiltersTimeColumnType.TIME_RANGE: "1 year ago"}
    ) == (
        [],
        [
            {
                "reason": ExtraFiltersReasonType.NO_TEMPORAL_COLUMN,
                "column": ExtraFiltersTimeColumnType.TIME_RANGE,
            }
        ],
    )

    assert get_time_filter_status(
        dataset, {ExtraFiltersTimeColumnType.TIME_GRAIN: "PT1M"}
    ) == (
        [],
        [
            {
                "reason": ExtraFiltersReasonType.NO_TEMPORAL_COLUMN,
                "column": ExtraFiltersTimeColumnType.TIME_GRAIN,
            }
        ],
    )