using System.CommandLine;
using JdeScoping.ConfigManager.Cli.Commands;
using JdeScoping.ConfigManager.Core.Models;
using JdeScoping.ConfigManager.Core.Services;
using Microsoft.Extensions.DependencyInjection;

namespace JdeScoping.ConfigManager.Cli.Tests.Commands;

[Collection("Console Tests")]
public class TestConnectionCommandTests
{
    private readonly IServiceProvider _serviceProvider;
    private readonly IConfigFileService _configFileService;
    private readonly IAutoDiscoveryService _autoDiscoveryService;
    private readonly IConnectionTestService _connectionTestService;
    private readonly Option<string?> _configPathOption;
    private readonly Option<bool> _verboseOption;
    private readonly Option<bool> _quietOption;

    public TestConnectionCommandTests()
    {
        _configFileService = Substitute.For<IConfigFileService>();
        _autoDiscoveryService = Substitute.For<IAutoDiscoveryService>();
        _connectionTestService = Substitute.For<IConnectionTestService>();

        var services = new ServiceCollection();
        services.AddSingleton(_configFileService);
        services.AddSingleton(_autoDiscoveryService);
        services.AddSingleton(_connectionTestService);
        services.AddTestLogging();
        _serviceProvider = services.BuildServiceProvider();

        _configPathOption = new Option<string?>(["--config-path", "-c"]);
        _verboseOption = new Option<bool>(["--verbose", "-v"]);
        _quietOption = new Option<bool>(["--quiet", "-q"]);
    }

    [Fact]
    public void CreateSqlCommand_ReturnsCommand()
    {
        // Act
        var command = TestConnectionCommand.CreateSqlCommand(
            _serviceProvider, _configPathOption, _verboseOption, _quietOption);

        // Assert
        command.ShouldNotBeNull();
        command.Name.ShouldBe("sql");
        command.Description.ShouldBe("Test SQL Server connection");
    }

    [Fact]
    public void CreateSqlCommand_HasNameOption()
    {
        // Act
        var command = TestConnectionCommand.CreateSqlCommand(
            _serviceProvider, _configPathOption, _verboseOption, _quietOption);

        // Assert
        command.Options.ShouldContain(o => o.Name == "name");
    }

    [Fact]
    public void CreateOracleCommand_ReturnsCommand()
    {
        // Act
        var command = TestConnectionCommand.CreateOracleCommand(
            _serviceProvider, _configPathOption, _verboseOption, _quietOption);

        // Assert
        command.ShouldNotBeNull();
        command.Name.ShouldBe("oracle");
        command.Description.ShouldBe("Test Oracle connection");
    }

    [Fact]
    public void CreateOracleCommand_HasNameOption()
    {
        // Act
        var command = TestConnectionCommand.CreateOracleCommand(
            _serviceProvider, _configPathOption, _verboseOption, _quietOption);

        // Assert
        command.Options.ShouldContain(o => o.Name == "name");
    }

    [Fact]
    public void CreateAllCommand_ReturnsCommand()
    {
        // Act
        var command = TestConnectionCommand.CreateAllCommand(
            _serviceProvider, _configPathOption, _verboseOption, _quietOption);

        // Assert
        command.ShouldNotBeNull();
        command.Name.ShouldBe("all");
        command.Description.ShouldBe("Test all configured connections");
    }

    [Fact]
    public async Task SqlCommand_WithNoConfigFolder_ReturnsError()
    {
        // Arrange
        _autoDiscoveryService.FindConfigFolderAsync(Arg.Any<CancellationToken>())
            .Returns(Task.FromResult<string?>(null));

        var command = TestConnectionCommand.CreateSqlCommand(
            _serviceProvider, _configPathOption, _verboseOption, _quietOption);
        var rootCommand = new RootCommand { command };
        rootCommand.AddGlobalOption(_configPathOption);
        rootCommand.AddGlobalOption(_verboseOption);
        rootCommand.AddGlobalOption(_quietOption);

        // Act
        var exitCode = await rootCommand.InvokeAsync(["sql"]);

        // Assert - command completes without throwing
        command.ShouldNotBeNull();
    }

    [Fact]
    public async Task SqlCommand_WithSuccessfulConnection_ReturnsSuccess()
    {
        // Arrange
        var tempDir = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString());
        Directory.CreateDirectory(tempDir);
        var appSettingsPath = Path.Combine(tempDir, "appsettings.json");
        File.WriteAllText(appSettingsPath, "{}");

        try
        {
            _autoDiscoveryService.FindConfigFolderAsync(Arg.Any<CancellationToken>())
                .Returns(Task.FromResult<string?>(tempDir));

            var config = new ConfigModel
            {
                ConnectionStrings = new ConnectionStringsSection
                {
                    Entries =
                    [
                        new ConnectionStringEntry
                        {
                            Name = "LocalCache",
                            Provider = ConnectionProvider.SqlServer,
                            Server = "localhost",
                            Database = "TestDb"
                        }
                    ]
                }
            };

            _configFileService.LoadAppSettingsAsync(appSettingsPath, Arg.Any<CancellationToken>())
                .Returns(Task.FromResult(config));

            _connectionTestService.TestConnectionAsync(
                Arg.Any<string>(),
                ConnectionProvider.SqlServer,
                Arg.Any<CancellationToken>())
                .Returns(Task.FromResult(new ConnectionTestResult
                {
                    Success = true,
                    Duration = TimeSpan.FromMilliseconds(50)
                }));

            var command = TestConnectionCommand.CreateSqlCommand(
                _serviceProvider, _configPathOption, _verboseOption, _quietOption);
            var rootCommand = new RootCommand { command };
            rootCommand.AddGlobalOption(_configPathOption);
            rootCommand.AddGlobalOption(_verboseOption);
            rootCommand.AddGlobalOption(_quietOption);

            // Capture console output
            var originalOut = Console.Out;
            using var writer = new StringWriter();
            Console.SetOut(writer);

            try
            {
                // Act
                await rootCommand.InvokeAsync(["sql"]);

                // Assert
                var output = writer.ToString();
                output.ShouldContain("Success");
            }
            finally
            {
                Console.SetOut(originalOut);
            }
        }
        finally
        {
            Directory.Delete(tempDir, true);
        }
    }

    [Fact]
    public async Task SqlCommand_WithFailedConnection_ReturnsError()
    {
        // Arrange
        var tempDir = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString());
        Directory.CreateDirectory(tempDir);
        var appSettingsPath = Path.Combine(tempDir, "appsettings.json");
        File.WriteAllText(appSettingsPath, "{}");

        try
        {
            _autoDiscoveryService.FindConfigFolderAsync(Arg.Any<CancellationToken>())
                .Returns(Task.FromResult<string?>(tempDir));

            var config = new ConfigModel
            {
                ConnectionStrings = new ConnectionStringsSection
                {
                    Entries =
                    [
                        new ConnectionStringEntry
                        {
                            Name = "LocalCache",
                            Provider = ConnectionProvider.SqlServer,
                            Server = "localhost",
                            Database = "TestDb"
                        }
                    ]
                }
            };

            _configFileService.LoadAppSettingsAsync(appSettingsPath, Arg.Any<CancellationToken>())
                .Returns(Task.FromResult(config));

            _connectionTestService.TestConnectionAsync(
                Arg.Any<string>(),
                ConnectionProvider.SqlServer,
                Arg.Any<CancellationToken>())
                .Returns(Task.FromResult(new ConnectionTestResult
                {
                    Success = false,
                    Message = "Connection refused"
                }));

            var command = TestConnectionCommand.CreateSqlCommand(
                _serviceProvider, _configPathOption, _verboseOption, _quietOption);
            var rootCommand = new RootCommand { command };
            rootCommand.AddGlobalOption(_configPathOption);
            rootCommand.AddGlobalOption(_verboseOption);
            rootCommand.AddGlobalOption(_quietOption);

            // Capture console output (Serilog writes all output to stdout)
            var originalOut = Console.Out;
            using var writer = new StringWriter();
            Console.SetOut(writer);

            try
            {
                // Act
                await rootCommand.InvokeAsync(["sql"]);

                // Assert
                var output = writer.ToString();
                output.ShouldContain("Failed");
            }
            finally
            {
                Console.SetOut(originalOut);
            }
        }
        finally
        {
            Directory.Delete(tempDir, true);
        }
    }

    [Fact]
    public void SqlCommand_NameOptionExists()
    {
        // Arrange & Act
        var command = TestConnectionCommand.CreateSqlCommand(
            _serviceProvider, _configPathOption, _verboseOption, _quietOption);

        // Assert
        var nameOption = command.Options.FirstOrDefault(o => o.Name == "name");
        nameOption.ShouldNotBeNull();
        nameOption.Description.ShouldBe("Name of the connection string to test");
    }

    [Fact]
    public void AllCommand_HasCorrectDescription()
    {
        // Arrange & Act
        var command = TestConnectionCommand.CreateAllCommand(
            _serviceProvider, _configPathOption, _verboseOption, _quietOption);

        // Assert
        command.Description.ShouldBe("Test all configured connections");
    }
}