using SQLInsight.Core.Data;
using SQLInsight.Core.Findings;
using SQLInsight.Rules.Availability;
using SQLInsight.Rules.Engine;
using static SQLInsight.Rules.Tests.TestInstances;

namespace SQLInsight.Rules.Tests;

public class ReplicationRuleTests
{
    private static RuleResult Run(IRule rule, RuleContext context) => Assert.Single(new RuleEngine([rule]).Evaluate(context));

    private static ReplicationSnapshot Distributor(params DistributionAgent[] agents) =>
        new() { CapturedAt = Now, IsDistributor = true, DistributionDatabase = "distribution", Agents = agents };

    [Fact]
    public void Not_a_distributor_is_not_relevant_and_without_rights_not_measurable()
    {
        Assert.Equal(RuleOutcome.NotApplicable, Run(new ReplicationAgentFailedRule(), With(new ReplicationSnapshot { CapturedAt = Now })).Outcome);
        var denied = Run(new ReplicationLatencyRule(), With(Distributor() with { Unavailable = "Giv agenten SELECT på MSdistribution_agents" }));
        Assert.Equal(RuleOutcome.NotMeasurable, denied.Outcome);
        Assert.Contains("MSdistribution_agents", denied.Reason, StringComparison.Ordinal);
    }

    [Fact]
    public void Failed_agents_are_high_and_slow_ones_medium()
    {
        var failed = new DistributionAgent("SQL01-AX-Pub-SQL02-1", "AX", 6, Now, null, "The process could not connect to Subscriber 'SQL02'.");
        var slow = new DistributionAgent("SQL01-AX-Pub-SQL03-2", "AX", 3, Now, 600_000, null);
        var fine = new DistributionAgent("SQL01-AX-Pub-SQL04-3", "AX", 4, Now, 2_000, null);

        var errors = Run(new ReplicationAgentFailedRule(), With(Distributor(failed, slow, fine)));
        var latency = Run(new ReplicationLatencyRule(), With(Distributor(failed, slow, fine)));

        var finding = Assert.Single(errors.Findings);
        Assert.Equal(Severity.High, finding.Severity);
        Assert.True(finding.Evidence.Single(e => e.Name == "Meddelelse").Sensitive);
        Assert.Contains("SQL03", Assert.Single(latency.Findings).Evidence.Single(e => e.Name == "Agent").Value, StringComparison.Ordinal);
    }
}