using Shouldly;
using Xunit;

namespace ZB.MOM.WW.OtOpcUa.Driver.Historian.QuestDb.Tests;

public sealed class QuestDbHistorianOptionsTests
{
    private static QuestDbHistorianOptions Valid() => new() { ConnectionString = "Host=h;Port=8812" };

    [Fact]
    public void Defaults_are_the_documented_ones()
    {
        var o = new QuestDbHistorianOptions();
        o.ConnectionString.ShouldBe("");
        o.TablePrefix.ShouldBe("hist_");
        o.RetentionDays.ShouldBeNull();
        o.CommandTimeout.ShouldBe(TimeSpan.FromSeconds(30));
        o.AutoCreateSchema.ShouldBeTrue();
        o.VisibilityTimeout.ShouldBe(TimeSpan.FromSeconds(5));
    }

    [Fact]
    public void A_valid_configuration_has_no_errors() => Valid().Validate().ShouldBeEmpty();

    [Fact]
    public void Missing_connection_string_names_the_key()
    {
        var o = Valid(); o.ConnectionString = " ";
        o.Validate().ShouldHaveSingleItem().ShouldContain("ServerHistorian:QuestDb:ConnectionString");
    }

    [Theory]
    [InlineData("")]
    [InlineData("hist-")]
    [InlineData("hist.")]
    [InlineData("hist_; DROP")]
    public void Bad_prefix_names_the_key(string prefix)
    {
        var o = Valid(); o.TablePrefix = prefix;
        o.Validate().ShouldHaveSingleItem().ShouldContain("ServerHistorian:QuestDb:TablePrefix");
    }

    [Theory]
    [InlineData("t0123456789ab_")]
    [InlineData("A_9")]
    public void Good_prefixes_pass(string prefix)
    {
        var o = Valid(); o.TablePrefix = prefix;
        o.Validate().ShouldBeEmpty();
    }

    [Theory]
    [InlineData(0)]
    [InlineData(-3)]
    public void Retention_below_one_names_the_key(int days)
    {
        var o = Valid(); o.RetentionDays = days;
        o.Validate().ShouldHaveSingleItem().ShouldContain("ServerHistorian:QuestDb:RetentionDays");
    }

    [Fact]
    public void Retention_of_one_is_valid() { var o = Valid(); o.RetentionDays = 1; o.Validate().ShouldBeEmpty(); }

    [Fact]
    public void Non_positive_command_timeout_names_the_key()
    {
        var o = Valid(); o.CommandTimeout = TimeSpan.Zero;
        o.Validate().ShouldHaveSingleItem().ShouldContain("ServerHistorian:QuestDb:CommandTimeout");
    }

    [Fact]
    public void Negative_visibility_timeout_names_the_key_and_zero_is_valid()
    {
        var o = Valid(); o.VisibilityTimeout = TimeSpan.FromMilliseconds(-1);
        o.Validate().ShouldHaveSingleItem().ShouldContain("ServerHistorian:QuestDb:VisibilityTimeout");
        o.VisibilityTimeout = TimeSpan.Zero;
        o.Validate().ShouldBeEmpty();
    }
}