import pytest

from ytdl_sub.utils.exceptions import ValidationException
from ytdl_sub.validators.validators import (
    BoolValidator,
    DictValidator,
    LiteralDictValidator,
    StringValidator,
)


class TestDictValidator:
    @pytest.mark.parametrize("value", [{}, {"key": "value"}, {"b": {}, "a": "keys_out_of_order"}])
    def test_dict_validator(self, value):
        dict_validator = DictValidator(name="good_dict_validator", value=value)
        assert dict_validator._name == "good_dict_validator"
        assert dict_validator._value == value
        assert dict_validator._dict == value
        assert dict_validator._keys == sorted(list(value.keys()))

    @pytest.mark.parametrize("value", [None, "a", {"set"}, 0])
    def test_dict_validator_fails_bad_value(self, value):
        with pytest.raises(
            ValidationException,
            match="Validation error in fail: should be of type object",
        ):
            _ = DictValidator(name="fail", value=value)

    @pytest.mark.parametrize(
        "value, validator_class", [("string", StringValidator), (False, BoolValidator)]
    )
    def test_dict_validator_validate_key(self, value, validator_class):
        dict_validator = DictValidator(name="validate_key", value={"key_name": value})
        validated_key = dict_validator._validate_key(key="key_name", validator=validator_class)

        assert isinstance(validated_key, validator_class)
        assert validated_key.value == value

    def test_dict_validator_validate_key_errors_missing(self):
        dict_validator = DictValidator(name="validate_key", value={"key": None})
        with pytest.raises(
            ValidationException,
            match="Validation error in validate_key: key_name is missing when it should be present.",
        ):
            _ = dict_validator._validate_key(key="key_name", validator=StringValidator)

    @pytest.mark.parametrize("bad_value", [None, {}, []])
    def test_dict_validator_validate_key_errors_bad_validation(self, bad_value):
        dict_validator = DictValidator(name="parent", value={"child": bad_value})
        with pytest.raises(
            ValidationException,
            match="Validation error in parent.child: should be of type string",
        ):
            _ = dict_validator._validate_key(key="child", validator=StringValidator)

    @pytest.mark.parametrize(
        "value, validator_class", [("string", StringValidator), (False, BoolValidator)]
    )
    def test_dict_validator_validate_key_if_present(self, value, validator_class):
        dict_validator = DictValidator(name="validate_key", value={"key_name": value})
        validated_key = dict_validator._validate_key_if_present(
            key="key_name", validator=validator_class
        )

        assert isinstance(validated_key, validator_class)
        assert validated_key.value == value

    def test_dict_validator_validate_key_if_present_is_missing(self):
        dict_validator = DictValidator(name="validate_key", value={"key_name": None})
        out = dict_validator._validate_key_if_present(
            key="non_existent_key", validator=StringValidator
        )

        assert out is None

    def test_dict_validator_validate_key_if_present_is_missing_with_default(self):
        dict_validator = DictValidator(name="validate_key", value={"key_name": None})
        out = dict_validator._validate_key_if_present(
            key="non_existent_key", validator=StringValidator, default="default"
        )

        assert isinstance(out, StringValidator)
        assert out.value == "default"

    @pytest.mark.parametrize("empty_value", [None, ""])
    def test_dict_validator_validate_key_if_present_has_empty_value(self, empty_value):
        dict_validator = DictValidator(name="validate_key", value={"key_name": empty_value})
        out = dict_validator._validate_key_if_present(key="key_name", validator=StringValidator)

        assert out is None

    @pytest.mark.parametrize("bad_value", [None, {}, []])
    def test_dict_validator_validate_key_errors_none_bad_validation(self, bad_value):
        dict_validator = DictValidator(name="parent", value={"child": bad_value})
        with pytest.raises(
            ValidationException,
            match="Validation error in parent.child: should be of type string",
        ):
            _ = dict_validator._validate_key(key="child", validator=StringValidator)


class TestLiteralDictValidator:
    @pytest.mark.parametrize("value", [{}, {"key": "value"}, {"b": {}, "a": "keys_out_of_order"}])
    def test_literal_dict_validator_dict_and_keys(self, value):
        dict_validator = LiteralDictValidator(name="good_dict_validator", value=value)
        assert dict_validator._name == "good_dict_validator"
        assert dict_validator._value == value
        assert dict_validator._dict == value
        assert dict_validator._keys == sorted(list(value.keys()))

        assert dict_validator.keys == dict_validator._keys
        assert dict_validator.dict == dict_validator._dict