using Evergreen.Health.Application.Health.Devices;
using Evergreen.Health.Application.Health.Devices.Discovery;
using Evergreen.Health.Application.Health.Devices.Mattress;
using Evergreen.Health.Application.Health.Integrations.HomeAssistant;
using Evergreen.Health.Application.Health.Scenes;
using Microsoft.Extensions.Options;
using System.Text.Json;
using Xunit;

namespace Admin.NET.Test.Health;

public sealed class SystemServiceFilteringTests
{
    private static HomeAssistantDeviceCatalog Catalog() => new(Options.Create(new HomeAssistantOptions()), new DeviceModuleRegistry([]));

    [Fact]
    public void RegistryDeserializationRetainsSystemServiceMarker()
    {
        var device = JsonSerializer.Deserialize<HomeAssistantDeviceRegistryItem>(
            """{"id":"system-sun","name":"Sun","entry_type":"service"}""");
        Assert.NotNull(device);
        Assert.Equal("service", device.EntryType);
    }

    [Fact]
    public void SystemServicesAreExcludedFromListAndAllDeviceCounts()
    {
        var registry = new HomeAssistantRegistries
        {
            Devices = [new() { Id = "sun", Name = "Sun", EntryType = "service" },
                new() { Id = "backup", Name = "Backup", EntryType = "service" }],
            Entities = [new() { DeviceId = "sun", EntityId = "sensor.sun_next_rising", Platform = "sun" },
                new() { DeviceId = "backup", EntityId = "sensor.backup_backup_manager_state", Platform = "backup" }]
        };
        var states = new Dictionary<string, HomeAssistantState>
        {
            ["sensor.sun_next_rising"] = new() { EntityId = "sensor.sun_next_rising", State = "2026-10-10T06:00:00Z" },
            ["sensor.backup_backup_manager_state"] = new() { EntityId = "sensor.backup_backup_manager_state", State = "idle" }
        };
        for (var i = 0; i < 9; i++)
        {
            var deviceId = $"furniture-{i}";
            var entityId = i == 0 ? "cover.curtain" : $"switch.furniture_{i}";
            registry.Devices.Add(new() { Id = deviceId, Name = $"家具{i}" });
            registry.Entities.Add(new() { DeviceId = deviceId, EntityId = entityId, Platform = "xiaomi_home" });
            states[entityId] = new() { EntityId = entityId, State = i == 0 ? "unavailable" : "on" };
        }
        var devices = Catalog().BuildDiscoveredDevices(registry, states);
        Assert.Equal(9, devices.Count);
        Assert.DoesNotContain(devices, device => device.DeviceId is "sun" or "backup");
        Assert.Contains(devices, device => device.DeviceId == "furniture-0" && !device.Online);
        var summary = HomeAssistantDeviceCatalog.BuildSummary(devices);
        Assert.Equal(9, summary.TotalDevices);
        Assert.Equal(8, summary.OnlineDevices);
        Assert.Equal(1, summary.OfflineDevices);
        Assert.Equal(9, summary.TotalEntities);
        Assert.Equal(8, summary.AvailableEntities);
    }

    [Theory]
    [InlineData("service")]
    [InlineData("SERVICE")]
    public void RenamedSystemServiceStillDoesNotBecomeFurniture(string entryType)
    {
        var registry = new HomeAssistantRegistries
        {
            Devices = [new() { Id = "service", Name = "系统服务", NameByUser = "我的灯", EntryType = entryType }],
            Entities = [new() { DeviceId = "service", EntityId = "sensor.service" }]
        };
        Assert.Empty(Catalog().BuildDiscoveredDevices(registry, new Dictionary<string, HomeAssistantState>
        {
            ["sensor.service"] = new() { EntityId = "sensor.service", State = "on" }
        }));
    }

    [Theory]
    [InlineData("Sun", null)]
    [InlineData("Backup", "")]
    public void PhysicalDevicesAreNotHiddenJustBecauseTheyShareServiceNames(string name, string? entryType)
    {
        var registry = new HomeAssistantRegistries
        {
            Devices = [new() { Id = "physical", Name = name, EntryType = entryType, Manufacturer = "Other brand" }],
            Entities = [new() { DeviceId = "physical", EntityId = "sensor.physical", Platform = "other_integration" }]
        };
        var device = Assert.Single(Catalog().BuildDiscoveredDevices(registry, new Dictionary<string, HomeAssistantState>
        {
            ["sensor.physical"] = new() { EntityId = "sensor.physical", State = "20" }
        }));
        Assert.Equal(name, device.Name);
        Assert.True(device.Online);
    }

    [Fact]
    public void ValidServiceOnlyRegistryDoesNotCreateFallbackFurniture()
    {
        var options = Options.Create(new HomeAssistantOptions
        {
            Entities = new() { MattressLeftHeatingLevel = "number.heating" }
        });
        var runner = new DeviceActionRunner(new FakeHaGateway(), TimeProvider.System, new());
        var catalog = new HomeAssistantDeviceCatalog(options, new DeviceModuleRegistry([new MattressModule(runner, options)]));
        var registry = new HomeAssistantRegistries
        {
            Devices = [new() { Id = "backup", Name = "Backup", EntryType = "service" }],
            Entities = [new() { DeviceId = "backup", EntityId = "sensor.backup", Platform = "backup" }]
        };
        var states = new Dictionary<string, HomeAssistantState>
        {
            ["sensor.backup"] = new() { EntityId = "sensor.backup", State = "idle" },
            ["number.heating"] = new() { EntityId = "number.heating", State = "0" }
        };
        Assert.Empty(catalog.BuildDiscoveredDevices(registry, states));
        Assert.Equal("mattress", Assert.Single(catalog.BuildDiscoveredDevices(null, states)).ModuleKey);
    }
}