using Shouldly;
using Xunit;
using ZB.MOM.WW.OtOpcUa.AdminUI.Deployments;
using ZB.MOM.WW.OtOpcUa.Configuration.Entities;
using ZB.MOM.WW.OtOpcUa.Core.Abstractions;
using ZB.MOM.WW.OtOpcUa.Runtime.Drivers;

namespace ZB.MOM.WW.OtOpcUa.AdminUI.Tests.Deployments;

/// <summary>
///     The upgrade preflight / <c>/raw</c> banner lists the configs the deploy gate will now refuse for lmxopcua#835
///     (another instance's secret) and #836 (absolute user-certificate path) — Draft and Deployed alike.
/// </summary>
[Trait("Category", "Unit")]
public sealed class CredentialReferencePreflightInstanceAndPathTests
{
    private static DriverInstance Drv(string id, string name, string type, string config) =>
        new() { DriverInstanceId = id, ClusterId = "c", Name = name, DriverType = type, DriverConfig = config };

    [Fact]
    public void Draft_and_deployed_cross_instance_references_are_listed()
    {
        var drivers = new[]
        {
            Drv("DRV-a", "A", DriverTypeNames.Galaxy, """{"Gateway":{"ApiKeySecretRef":"secret:galaxy/DRV-a/apikey"}}"""),
            Drv("DRV-b", "B", DriverTypeNames.Galaxy, """{"Gateway":{"ApiKeySecretRef":"secret:galaxy/DRV-a/apikey"}}"""),
        };
        var devices = new[] { new Device { DeviceId = "dev-b", DriverInstanceId = "DRV-b", Name = "gw", DeviceConfig = """{"AlarmAck":{"FallbackPasswordSecretRef":"secret:otopcua/galaxy/A/ack"}}""" } };
        var deployed = new[]
        {
            new DriverInstanceSpec(Guid.NewGuid(), "DRV-a", "A", DriverTypeNames.Galaxy, true, "{}"),
            new DriverInstanceSpec(Guid.NewGuid(), "DRV-b", "B", DriverTypeNames.Galaxy, true, """{"Gateway":{"ApiKeySecretRef":"secret:galaxy/A/apikey"}}"""),
        };

        var findings = CredentialReferencePreflight.Scan(drivers, devices, deployed);

        findings.Count.ShouldBe(3);
        findings.ShouldAllBe(f => f.DriverInstanceId == "DRV-b" && f.Problem.Contains("lmxopcua#835"));
        findings.Count(f => f.Source == CredentialFindingSource.Draft).ShouldBe(2);
        findings.Single(f => f.Source == CredentialFindingSource.Deployed).DriverName.ShouldBe("B");
    }

    [Fact]
    public void An_absolute_user_certificate_path_is_listed_without_the_path()
    {
        var findings = CredentialReferencePreflight.Scan(
            [Drv("o", "Upstream", DriverTypeNames.OpcUaClient, """{"AuthType":"Certificate","UserCertificatePath":"C:\\certs\\plant.pfx"}""")],
            [],
            []);

        var f = findings.ShouldHaveSingleItem();
        f.Problem.ShouldContain("lmxopcua#836");
        f.Problem.ShouldNotContain("plant.pfx");
    }

    /// <summary>
    ///     lmxopcua#850: the AuthType switch in one config and the path in the other — each config passes alone, the
    ///     runtime-merged config does not. The deploy gate catches it; the banner must show it before a deploy does.
    /// </summary>
    [Fact]
    public void A_path_split_from_its_certificate_switch_is_listed_from_the_merged_config()
    {
        var findings = CredentialReferencePreflight.Scan(
            [Drv("o", "Upstream", DriverTypeNames.OpcUaClient, """{"AuthType":"Anonymous","UserCertificatePath":"C:\\stolen\\host.pfx"}""")],
            [new Device { DeviceId = "dev-o", DriverInstanceId = "o", Name = "d", DeviceConfig = """{"AuthType":"Certificate"}""" }],
            []);

        var f = findings.ShouldHaveSingleItem();
        f.Source.ShouldBe(CredentialFindingSource.Draft);
        f.DriverInstanceId.ShouldBe("o");
        f.DeviceName.ShouldBeNull();
        f.Problem.ShouldContain("merged with its devices");
        f.Problem.ShouldContain("lmxopcua#836");
        f.Problem.ShouldNotContain("host.pfx");
    }

    /// <summary>Control: a problem already reported on one config is not listed a second time from the merge.</summary>
    [Fact]
    public void A_path_already_reported_on_its_own_config_is_not_duplicated_by_the_merge() =>
        CredentialReferencePreflight.Scan(
                [Drv("o", "Upstream", DriverTypeNames.OpcUaClient, """{"AuthType":"Certificate","UserCertificatePath":"C:\\certs\\plant.pfx"}""")],
                [new Device { DeviceId = "dev-o", DriverInstanceId = "o", Name = "d", DeviceConfig = "{}" }],
                [])
            .ShouldHaveSingleItem().Problem.ShouldNotContain("merged");

    /// <summary>lmxopcua#849: an env: reference naming another instance is listed like a secret: one.</summary>
    [Fact]
    public void A_cross_instance_env_reference_is_listed() =>
        CredentialReferencePreflight.Scan(
                [
                    Drv("DRV-a", "A", DriverTypeNames.Galaxy, "{}"),
                    Drv("DRV-b", "B", DriverTypeNames.Galaxy, """{"Gateway":{"ApiKeySecretRef":"env:OTOPCUA_GALAXY_DRV_A_KEY"}}"""),
                ],
                [],
                [])
            .ShouldHaveSingleItem().Problem.ShouldContain("lmxopcua#849");
}