using FluentValidation.TestHelper;
using Recyclarr.Config.Parsing;

namespace Recyclarr.Tests.Config.Parsing;

[TestFixture]
public class ConfigYamlDataObjectsValidationTest
{
    [Test]
    public void Quality_profile_format_upgrade_allowed_required()
    {
        var data = new QualityProfileConfigYaml
        {
            Name = "My QP",
            Upgrade = new QualityProfileFormatUpgradeYaml(),
        };

        var validator = new QualityProfileFormatUpgradeYamlValidator(data);
        var result = validator.TestValidate(data.Upgrade);

        result
            .ShouldHaveValidationErrorFor(x => x.Allowed)
            .WithErrorMessage(
                $"For profile {data.Name}, 'allowed' under 'upgrade' is required. "
                    + $"If you don't want Recyclarr to manage upgrades, delete the whole 'upgrade' block."
            );
    }

    [Test]
    public void Quality_profile_format_upgrade_until_quality_required()
    {
        var data = new QualityProfileConfigYaml
        {
            Name = "My QP",
            Upgrade = new QualityProfileFormatUpgradeYaml { Allowed = true },
            Qualities = new List<QualityProfileQualityConfigYaml>(),
        };

        var validator = new QualityProfileFormatUpgradeYamlValidator(data);
        var result = validator.TestValidate(data.Upgrade);

        result
            .ShouldHaveValidationErrorFor(x => x.UntilQuality)
            .WithErrorMessage(
                $"For profile {data.Name}, 'until_quality' is required when 'allowed' is set to 'true' and "
                    + $"an explicit 'qualities' list is provided."
            );
    }

    [Test]
    public void Quality_profile_name_required()
    {
        var data = new QualityProfileConfigYaml();

        var validator = new QualityProfileConfigYamlValidator();
        var result = validator.TestValidate(data);

        result.ShouldHaveValidationErrorFor(x => x.Name);
    }

    [Test]
    public void Quality_profile_qualities_must_have_cutoff_quality()
    {
        var data = new QualityProfileConfigYaml
        {
            Name = "My QP",
            Upgrade = new QualityProfileFormatUpgradeYaml
            {
                Allowed = true,
                UntilQuality = "Test Quality",
            },
            Qualities = [new QualityProfileQualityConfigYaml { Name = "Another Quality" }],
        };

        var validator = new QualityProfileConfigYamlValidator();
        var result = validator.TestValidate(data);

        result.ShouldHaveValidationErrorFor(x => x.Qualities);

        result
            .Errors.Select(x => x.ErrorMessage)
            .Should()
            .BeEquivalentTo(
                $"For profile {data.Name}, 'qualities' must contain the quality mentioned in 'until_quality', "
                    + $"which is '{data.Upgrade!.UntilQuality}'"
            );
    }

    [Test]
    public void Quality_profile_qualities_must_have_no_duplicates()
    {
        var data = new QualityProfileConfigYaml
        {
            Name = "My QP",
            Qualities =
            [
                new QualityProfileQualityConfigYaml { Name = "Dupe Quality" },
                new QualityProfileQualityConfigYaml { Name = "Dupe Quality" },
                new QualityProfileQualityConfigYaml { Name = "Dupe Quality" },
                new QualityProfileQualityConfigYaml { Name = "Dupe Quality 2" },
                new QualityProfileQualityConfigYaml { Name = "Dupe Quality 3" },
                new QualityProfileQualityConfigYaml
                {
                    Name = "Dupe Quality 2",
                    Qualities = ["Dupe Quality 3"],
                },
                new QualityProfileQualityConfigYaml
                {
                    Name = "Dupe Quality 4",
                    Qualities = ["Dupe Quality 5"],
                },
                new QualityProfileQualityConfigYaml
                {
                    Name = "Dupe Quality 4",
                    Qualities = ["Dupe Quality 5"],
                },
            ],
        };

        var validator = new QualityProfileConfigYamlValidator();
        var result = validator.TestValidate(data);

        result.ShouldHaveValidationErrorFor(x => x.Qualities);

        result
            .Errors.Select(x => x.ErrorMessage)
            .Should()
            .BeEquivalentTo(
                $"For profile {data.Name}, 'qualities' contains duplicates for quality 'Dupe Quality'",
                $"For profile {data.Name}, 'qualities' contains duplicates for quality 'Dupe Quality 3'",
                $"For profile {data.Name}, 'qualities' contains duplicates for quality group 'Dupe Quality 4'",
                $"For profile {data.Name}, 'qualities' contains duplicates for quality 'Dupe Quality 5'"
            );
    }

    [Test]
    public void Quality_profile_qualities_must_have_at_least_one_enabled()
    {
        var data = new QualityProfileConfigYaml
        {
            Name = "My QP",
            Qualities =
            [
                new QualityProfileQualityConfigYaml { Name = "Quality 1", Enabled = false },
                new QualityProfileQualityConfigYaml { Name = "Quality 2", Enabled = false },
            ],
        };

        var validator = new QualityProfileConfigYamlValidator();
        var result = validator.TestValidate(data);

        result.ShouldHaveValidationErrorFor(x => x.Qualities);

        result
            .Errors.Select(x => x.ErrorMessage)
            .Should()
            .BeEquivalentTo(
                $"For profile {data.Name}, at least one explicitly listed quality under 'qualities' must be enabled."
            );
    }

    [Test]
    public void Quality_profile_cutoff_quality_should_not_refer_to_disabled_qualities()
    {
        var data = new QualityProfileConfigYaml
        {
            Name = "My QP",
            Upgrade = new QualityProfileFormatUpgradeYaml
            {
                Allowed = true,
                UntilQuality = "Disabled Quality",
            },
            Qualities =
            [
                new QualityProfileQualityConfigYaml { Name = "Enabled Quality" },
                new QualityProfileQualityConfigYaml { Name = "Disabled Quality", Enabled = false },
            ],
        };

        var validator = new QualityProfileConfigYamlValidator();
        var result = validator.TestValidate(data);

        result.ShouldHaveValidationErrorFor(x => x.Qualities);

        result
            .Errors.Select(x => x.ErrorMessage)
            .Should()
            .BeEquivalentTo(
                $"For profile {data.Name}, 'until_quality' must not refer to explicitly disabled qualities"
            );
    }

    [Test]
    public void Empty_qualities_in_groups_not_allowed()
    {
        var data = new QualityProfileConfigYaml
        {
            Name = "Profile",
            Qualities =
            [
                new QualityProfileQualityConfigYaml
                {
                    Name = "Group",
                    Qualities = Array.Empty<string>(),
                },
            ],
        };

        var validator = new QualityProfileConfigYamlValidator();
        var result = validator.TestValidate(data);

        result.ShouldHaveValidationErrorFor(x => x.Qualities);

        result
            .Errors.Select(x => x.ErrorMessage)
            .Should()
            .BeEquivalentTo(
                $"For profile {data.Name}, 'qualities' contains 1 groups with less than 2 qualities"
            );
    }

    [Test]
    public void Only_one_quality_in_groups_not_allowed()
    {
        var data = new QualityProfileConfigYaml
        {
            Name = "Profile",
            Qualities =
            [
                new QualityProfileQualityConfigYaml { Name = "Group", Qualities = ["One Quality"] },
            ],
        };

        var validator = new QualityProfileConfigYamlValidator();
        var result = validator.TestValidate(data);

        result.ShouldHaveValidationErrorFor(x => x.Qualities);

        result
            .Errors.Select(x => x.ErrorMessage)
            .Should()
            .BeEquivalentTo(
                $"For profile {data.Name}, 'qualities' contains 1 groups with less than 2 qualities"
            );
    }

    [Test]
    public void Two_qualities_in_group_passes_validation()
    {
        var data = new QualityProfileConfigYaml
        {
            Name = "Profile",
            Qualities =
            [
                new QualityProfileQualityConfigYaml
                {
                    Name = "Group",
                    Qualities = ["One Quality", "Two Quality"],
                },
            ],
        };

        var validator = new QualityProfileConfigYamlValidator();
        var result = validator.TestValidate(data);

        result.ShouldNotHaveAnyValidationErrors();
    }
}