using ChatBot.Models.Configuration;
using ChatBot.Services;
using ChatBot.Services.Interfaces;
using ChatBot.Services.Telegram.Commands;
using ChatBot.Tests.TestUtilities;
using FluentAssertions;
using Microsoft.Extensions.Options;
using Moq;
using OllamaSharp.Models.Chat;

namespace ChatBot.Tests.Telegram.Commands;

public class StatusCommandTests : UnitTestBase
{
    private readonly Mock<IOptions<OllamaSettings>> _ollamaOptionsMock;
    private readonly Mock<IOllamaClient> _ollamaClientMock;
    private readonly StatusCommand _statusCommand;

    public StatusCommandTests()
    {
        var ollamaSettings = TestDataBuilder.Configurations.CreateOllamaSettings();
        _ollamaOptionsMock = TestDataBuilder.Mocks.CreateOptionsMock(ollamaSettings);

        _ollamaClientMock = TestDataBuilder.Mocks.CreateOllamaClientMock();

        var chatServiceMock = new Mock<ChatService>(
            TestDataBuilder.Mocks.CreateLoggerMock<ChatService>().Object,
            TestDataBuilder.Mocks.CreateAIServiceMock().Object,
            TestDataBuilder.Mocks.CreateSessionStorageMock().Object,
            TestDataBuilder
                .Mocks.CreateOptionsMock(TestDataBuilder.Configurations.CreateAISettings())
                .Object,
            TestDataBuilder.Mocks.CreateCompressionServiceMock().Object
        );
        var modelServiceMock = new Mock<ModelService>(
            TestDataBuilder.Mocks.CreateLoggerMock<ModelService>().Object,
            _ollamaOptionsMock.Object
        );
        var aiSettingsMock = TestDataBuilder.Mocks.CreateOptionsMock(new AISettings());

        _statusCommand = new StatusCommand(
            chatServiceMock.Object,
            modelServiceMock.Object,
            aiSettingsMock.Object,
            _ollamaClientMock.Object
        );
    }

    [Fact]
    public async Task ExecuteAsync_ShouldReturnStatusMessage_WhenBothServicesAreHealthy()
    {
        // Arrange
        var context = new TelegramCommandContext
        {
            ChatId = 12345,
            Username = "testuser",
            MessageText = "/status",
            ChatType = "private",
            ChatTitle = "Test Chat",
        };

        // Mock Ollama health check
        _ollamaClientMock
            .Setup(x => x.ChatAsync(It.IsAny<OllamaSharp.Models.Chat.ChatRequest>()))
            .Returns(
                TestDataBuilder.Mocks.CreateAsyncEnumerable(
                    new List<OllamaSharp.Models.Chat.ChatResponseStream>
                    {
                        new OllamaSharp.Models.Chat.ChatResponseStream
                        {
                            Message = new OllamaSharp.Models.Chat.Message(
                                ChatRole.Assistant,
                                "Test response"
                            ),
                        },
                    }
                )
            );

        // Act
        var result = await _statusCommand.ExecuteAsync(context);

        // Assert
        result.Should().NotBeNull();
        result.Should().Contain("Статус");
        result.Should().Contain("API");
        result.Should().Contain("системы");
    }

    [Fact]
    public async Task ExecuteAsync_ShouldReturnErrorStatus_WhenOllamaIsUnavailable()
    {
        // Arrange
        var context = new TelegramCommandContext
        {
            ChatId = 12345,
            Username = "testuser",
            MessageText = "/status",
            ChatType = "private",
            ChatTitle = "Test Chat",
        };

        // Mock Ollama failure
        _ollamaClientMock
            .Setup(x => x.ChatAsync(It.IsAny<OllamaSharp.Models.Chat.ChatRequest>()))
            .Throws(new Exception("Ollama unavailable"));

        // Act
        var result = await _statusCommand.ExecuteAsync(context);

        // Assert
        result.Should().NotBeNull();
        result.Should().Contain("Статус");
        result.Should().Contain("API");
        result.Should().Contain("Ошибка");
    }

    [Fact]
    public async Task ExecuteAsync_ShouldReturnErrorStatus_WhenTelegramIsUnavailable()
    {
        // Arrange
        var context = new TelegramCommandContext
        {
            ChatId = 12345,
            Username = "testuser",
            MessageText = "/status",
            ChatType = "private",
            ChatTitle = "Test Chat",
        };

        // Mock Ollama health check
        _ollamaClientMock
            .Setup(x => x.ChatAsync(It.IsAny<OllamaSharp.Models.Chat.ChatRequest>()))
            .Returns(
                TestDataBuilder.Mocks.CreateAsyncEnumerable(
                    new List<OllamaSharp.Models.Chat.ChatResponseStream>
                    {
                        new OllamaSharp.Models.Chat.ChatResponseStream
                        {
                            Message = new OllamaSharp.Models.Chat.Message(
                                ChatRole.Assistant,
                                "Test response"
                            ),
                        },
                    }
                )
            );

        // Act
        var result = await _statusCommand.ExecuteAsync(context);

        // Assert
        result.Should().NotBeNull();
        result.Should().Contain("Статус");
        result.Should().Contain("системы");
        result.Should().Contain("Доступен");
    }
}