using Microsoft.EntityFrameworkCore;
using ZB.MOM.WW.OtOpcUa.AdminUI.Acls;
using ZB.MOM.WW.OtOpcUa.AdminUI.Uns;
using ZB.MOM.WW.OtOpcUa.Configuration;
using ZB.MOM.WW.OtOpcUa.Configuration.Entities;
using ZB.MOM.WW.OtOpcUa.Configuration.Enums;

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

/// <summary>
///     Fixture for <see cref="AclScopeService"/> — two clusters, so cross-cluster scoping is testable, and
///     one deliberately broken UNS chain, so "the row exists but no cluster owns it" is testable
///     separately from "the row does not exist".
/// </summary>
internal static class AclScopeTestDb
{
    public const string ClusterId = "MAIN";
    public const string OtherClusterId = "SIDE";

    public const string FolderId = "RF-plcs";
    public const string DriverId = "DRV-modbus";
    public const string DeviceId = "DEV-1";
    public const string TagGroupId = "TG-motors";
    public const string TagId = "TAG-speed";

    public const string AreaId = "AREA-1";
    public const string LineId = "LINE-1";
    public const string EquipmentId = "EQ-1";

    /// <summary>An equipment whose line does not exist — present, but owned by no cluster.</summary>
    public const string OrphanEquipmentId = "EQ-orphan";

    /// <summary>A driver in the OTHER cluster, for the cross-cluster rule.</summary>
    public const string OtherDriverId = "DRV-side";

    public const string LivePrincipal = "scadabridge-dcl";
    public const string StalePrincipal = "retired-consumer";

    /// <summary>The clock the fixture's key expiries are expressed against.</summary>
    public static readonly DateTime Now = new(2026, 8, 1, 12, 0, 0, DateTimeKind.Utc);

    public static OtOpcUaConfigDbContext CreateNamed(string name) =>
        new(new DbContextOptionsBuilder<OtOpcUaConfigDbContext>().UseInMemoryDatabase(name).Options);

    public static IDbContextFactory<OtOpcUaConfigDbContext> Factory(string name) => new NamedFactory(name);

    /// <summary>Seeds a fresh uniquely-named InMemory database and returns a service over it.</summary>
    public static AclScopeService NewService(TimeProvider? time = null)
    {
        var name = $"acl-{Guid.NewGuid():N}";
        using (var db = CreateNamed(name)) { Seed(db); }

        var factory = Factory(name);
        return new AclScopeService(factory, new RawTreeService(factory), new UnsTreeService(factory), time);
    }

    public static void Seed(OtOpcUaConfigDbContext db)
    {
        db.ServerClusters.Add(new ServerCluster
        {
            ClusterId = ClusterId, Name = "Main", Enterprise = "zb", Site = "warsaw-west",
            RedundancyMode = RedundancyMode.None, CreatedBy = "test",
        });
        db.ServerClusters.Add(new ServerCluster
        {
            ClusterId = OtherClusterId, Name = "Side", Enterprise = "zb", Site = "krakow",
            RedundancyMode = RedundancyMode.None, CreatedBy = "test",
        });

        // MAIN raw: folder → driver → device → group → tag.
        db.RawFolders.Add(new RawFolder
        {
            RawFolderId = FolderId, ClusterId = ClusterId, ParentRawFolderId = null, Name = "PLCs",
        });
        db.DriverInstances.Add(new DriverInstance
        {
            DriverInstanceId = DriverId, ClusterId = ClusterId, RawFolderId = FolderId,
            Name = "modbus-1", DriverType = "Modbus", DriverConfig = "{}",
        });
        db.Devices.Add(new Device
        {
            DeviceId = DeviceId, DriverInstanceId = DriverId, Name = "dev1", DeviceConfig = "{}",
        });
        db.TagGroups.Add(new TagGroup
        {
            TagGroupId = TagGroupId, DeviceId = DeviceId, ParentTagGroupId = null, Name = "Motors",
        });
        db.Tags.Add(new Tag
        {
            TagId = TagId, DeviceId = DeviceId, TagGroupId = TagGroupId, Name = "speed",
            DataType = "Float", AccessLevel = TagAccessLevel.ReadWrite, TagConfig = "{}",
        });

        // SIDE raw: one driver, so a cross-cluster scope has something real to point at.
        db.DriverInstances.Add(new DriverInstance
        {
            DriverInstanceId = OtherDriverId, ClusterId = OtherClusterId, RawFolderId = null,
            Name = "s7-side", DriverType = "S7", DriverConfig = "{}",
        });

        // MAIN UNS: area → line → equipment.
        db.UnsAreas.Add(new UnsArea { UnsAreaId = AreaId, ClusterId = ClusterId, Name = "Packaging" });
        db.UnsLines.Add(new UnsLine { UnsLineId = LineId, UnsAreaId = AreaId, Name = "Line 1" });
        db.Equipment.Add(new Equipment
        {
            EquipmentId = EquipmentId, EquipmentUuid = Guid.NewGuid(), UnsLineId = LineId,
            Name = "packer-1", MachineCode = "packer_001",
        });

        // An equipment whose line was deleted: it exists, but nothing owns it.
        db.Equipment.Add(new Equipment
        {
            EquipmentId = OrphanEquipmentId, EquipmentUuid = Guid.NewGuid(), UnsLineId = "LINE-GONE",
            Name = "stranded", MachineCode = "stranded_001",
        });

        db.ApiKeys.Add(Key("k1", LivePrincipal, enabled: true, expires: null));
        db.ApiKeys.Add(Key("k2", LivePrincipal, enabled: true, expires: null));
        db.ApiKeys.Add(Key("k3", LivePrincipal, enabled: false, expires: null));
        db.ApiKeys.Add(Key("k4", StalePrincipal, enabled: true, expires: Now.AddDays(-1)));

        db.SaveChanges();
    }

    private static ApiKey Key(string id, string principal, bool enabled, DateTime? expires) => new()
    {
        ApiKeyId = id,
        Name = id,
        SecretHash = "not-a-secret",
        Principal = principal,
        Enabled = enabled,
        CreatedUtc = Now.AddDays(-30),
        ExpiresUtc = expires,
    };

    private sealed class NamedFactory(string name) : IDbContextFactory<OtOpcUaConfigDbContext>
    {
        public OtOpcUaConfigDbContext CreateDbContext() => CreateNamed(name);

        public Task<OtOpcUaConfigDbContext> CreateDbContextAsync(CancellationToken cancellationToken = default) =>
            Task.FromResult(CreateNamed(name));
    }
}