using Avalonia;
using Avalonia.Controls;
using Avalonia.Interactivity;
using Avalonia.Media.Imaging;
using Avalonia.Platform.Storage;
using Avalonia.Styling;
using Avalonia.Threading;
using Catalog.Communication.Abstractions;
using Catalog.Communication.Models;
using ImageCatalog;
using Microsoft.Extensions.Logging;
using System;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using System.Threading.Tasks;

namespace ImageCatalog_2;

public partial class AvaloniaMainWindow : Window
{
    private const string ApiLoginKey = "ApiTest.Login";
    private const string ApiPasswordKey = "ApiTest.Password";
    private const string ApiRaceTypeKey = "RaceUpload.TipoGaraId";
    private const string ApiRacePathBaseKey = "RaceUpload.PathBase";
    private const string ApiRemoteProcessedBaseKey = "RaceUpload.RemoteProcessedBasePath";
    private const string ApiRaceOnlineFlagKey = "RaceUpload.FlgEventoInLinea";
    private const string ApiRaceIndexFlagKey = "RaceUpload.FlgTipoIndex";
    private const string ApiRaceFreeFlagKey = "RaceUpload.FlgFree";
    private const string ApiLastRaceIdKey = "RaceUpload.LastRaceId";

    private readonly DataModel _model;
    private readonly IRaceUploadCommunicationClient _apiClient;
    private readonly ParametriSetup _parametriSetup;
    private readonly ILogger<AvaloniaMainWindow> _logger;
    private bool _isDarkTheme = false;

    public AvaloniaMainWindow(
        DataModel model,
        IRaceUploadCommunicationClient apiClient,
        ParametriSetup parametriSetup,
        ILogger<AvaloniaMainWindow> logger)
    {
        InitializeComponent();
        _model = model;
        _apiClient = apiClient;
        _parametriSetup = parametriSetup;
        _logger = logger;
        DataContext = _model;

        // Provide Avalonia dispatcher so DataModel can marshal UI updates
        _model.UiInvoker = action => Dispatcher.UIThread.Invoke(action);

        // Wire dialog events
        _model.SelectSourceFolderRequested += async (_, _) =>
        {
            var folders = await StorageProvider.OpenFolderPickerAsync(new FolderPickerOpenOptions { Title = "Seleziona cartella sorgente" });
            if (folders.Count > 0) _model.SourcePath = folders[0].Path.LocalPath + Path.DirectorySeparatorChar;
        };

        _model.SelectDestinationFolderRequested += async (_, _) =>
        {
            var folders = await StorageProvider.OpenFolderPickerAsync(new FolderPickerOpenOptions { Title = "Seleziona cartella destinazione" });
            if (folders.Count > 0) _model.DestinationPath = folders[0].Path.LocalPath + Path.DirectorySeparatorChar;
        };

        _model.SelectLogoFileRequested += async (_, _) =>
        {
            var files = await StorageProvider.OpenFilePickerAsync(new FilePickerOpenOptions
            {
                Title = "Seleziona logo",
                FileTypeFilter = new[] { new FilePickerFileType("Immagini") { Patterns = new[] { "*.jpg", "*.jpeg", "*.png", "*.bmp", "*.gif" } } }
            });
            if (files.Count > 0)
            {
                _model.LogoFile = files[0].Path.LocalPath;
                UpdateLogoPreview(_model.LogoFile);
            }
        };

        _model.SelectModelsFolderRequested += async (_, _) =>
        {
            var folders = await StorageProvider.OpenFolderPickerAsync(new FolderPickerOpenOptions { Title = "Seleziona cartella modelli" });
            if (folders.Count > 0) _model.ModelsFolderPath = folders[0].Path.LocalPath + Path.DirectorySeparatorChar;
        };

        _model.SelectCsvOutputRequested += async (_, _) =>
        {
            var file = await StorageProvider.SaveFilePickerAsync(new FilePickerSaveOptions
            {
                Title = "Salva CSV",
                DefaultExtension = "csv",
                FileTypeChoices = new[] { new FilePickerFileType("CSV") { Patterns = new[] { "*.csv" } } }
            });
            if (file != null) _model.CsvOutputPath = file.Path.LocalPath;
        };

        _model.SaveSettingsRequested += async (_, _) =>
        {
            var file = await StorageProvider.SaveFilePickerAsync(new FilePickerSaveOptions
            {
                Title = "Salva impostazioni",
                DefaultExtension = "xml",
                FileTypeChoices = new[] { new FilePickerFileType("Setup") { Patterns = new[] { "*.xml" } } }
            });
            if (file != null) await _model.SaveSettingsToFileAsync(file.Path.LocalPath);
        };

        _model.LoadSettingsRequested += async (_, _) =>
        {
            var files = await StorageProvider.OpenFilePickerAsync(new FilePickerOpenOptions
            {
                Title = "Carica impostazioni",
                FileTypeFilter = new[] { new FilePickerFileType("Setup") { Patterns = new[] { "*.xml" } } }
            });
            if (files.Count > 0) await _model.LoadSettingsFromFileAsync(files[0].Path.LocalPath);
        };

        _model.SelectColorRequested += (_, _) =>
        {
            // Color is set by typing hex directly in the TextBox
        };

        _model.SelectTransparentColorRequested += (_, _) =>
        {
            // Color is set by typing hex directly in the TextBox
        };

        _model.PropertyChanged += (_, e) =>
        {
            if (e.PropertyName == nameof(_model.LogoFile))
                UpdateLogoPreview(_model.LogoFile);
        };

        LoadApiTestCredentials();
        LoadRaceUploadSettings();
    }

    private void ToggleTheme_Click(object? sender, RoutedEventArgs e)
    {
        _isDarkTheme = !_isDarkTheme;
        if (Avalonia.Application.Current != null)
            Avalonia.Application.Current.RequestedThemeVariant = _isDarkTheme ? ThemeVariant.Dark : ThemeVariant.Light;
    }

    private void OpenSourceFolder_Click(object? sender, RoutedEventArgs e) => OpenInExplorer(_model.SourcePath);
    private void OpenDestinationFolder_Click(object? sender, RoutedEventArgs e) => OpenInExplorer(_model.DestinationPath);
    private void OpenModelsFolder_Click(object? sender, RoutedEventArgs e) => OpenInExplorer(_model.ModelsFolderPath);
    private void OpenCsvOutputFolder_Click(object? sender, RoutedEventArgs e)
    {
        var dir = Path.GetDirectoryName(_model.CsvOutputPath);
        OpenInExplorer(string.IsNullOrWhiteSpace(dir) ? _model.CsvOutputPath : dir);
    }

    private static void OpenInExplorer(string? path)
    {
        if (string.IsNullOrWhiteSpace(path)) return;
        path = path.Trim().Trim('"');
        try
        {
            if (File.Exists(path))
                System.Diagnostics.Process.Start("explorer.exe", $"/select,\"{path}\"");
            else if (Directory.Exists(path))
                System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo { FileName = path, UseShellExecute = true });
        }
        catch { }
    }

    private void UpdateLogoPreview(string? path)
    {
        var preview = this.FindControl<Avalonia.Controls.Image>("LogoPreview");
        if (preview == null) return;
        if (string.IsNullOrWhiteSpace(path) || !File.Exists(path))
        {
            preview.Source = null;
            return;
        }
        try { preview.Source = new Avalonia.Media.Imaging.Bitmap(path); }
        catch { preview.Source = null; }
    }

    private void LoadApiTestCredentials()
    {
        var loginBox = this.FindControl<Avalonia.Controls.TextBox>("ApiLoginTextBox");
        var passwordBox = this.FindControl<Avalonia.Controls.TextBox>("ApiPasswordTextBox");
        if (loginBox is null || passwordBox is null)
        {
            return;
        }

        loginBox.Text = _parametriSetup.LeggiParametroString(ApiLoginKey);
        passwordBox.Text = _parametriSetup.LeggiParametroString(ApiPasswordKey);
    }

    private void SaveApiTestCredentials()
    {
        var loginBox = this.FindControl<Avalonia.Controls.TextBox>("ApiLoginTextBox");
        var passwordBox = this.FindControl<Avalonia.Controls.TextBox>("ApiPasswordTextBox");
        if (loginBox is null || passwordBox is null)
        {
            return;
        }

        _parametriSetup.AggiornaParametro(ApiLoginKey, loginBox.Text ?? string.Empty);
        _parametriSetup.AggiornaParametro(ApiPasswordKey, passwordBox.Text ?? string.Empty);
        _parametriSetup.SalvaParametriSetup();
    }

    private void LoadRaceUploadSettings()
    {
        var raceTypeBox = this.FindControl<Avalonia.Controls.TextBox>("ApiRaceTypeIdTextBox");
        var pathBaseBox = this.FindControl<Avalonia.Controls.TextBox>("ApiPathBaseTextBox");
        var remoteBaseBox = this.FindControl<Avalonia.Controls.TextBox>("ApiRemoteProcessedBasePathTextBox");
        var onlineBox = this.FindControl<Avalonia.Controls.ComboBox>("ApiEventoInLineaComboBox");
        var indexBox = this.FindControl<Avalonia.Controls.ComboBox>("ApiTipoIndexComboBox");
        var freeBox = this.FindControl<Avalonia.Controls.ComboBox>("ApiFreeEventComboBox");
        var raceIdBox = this.FindControl<Avalonia.Controls.TextBox>("ApiRaceIdTextBox");

        if (raceTypeBox is not null)
        {
            raceTypeBox.Text = _parametriSetup.LeggiParametroString(ApiRaceTypeKey);
        }

        if (pathBaseBox is not null)
        {
            pathBaseBox.Text = _parametriSetup.LeggiParametroString(ApiRacePathBaseKey);
        }

        if (remoteBaseBox is not null)
        {
            remoteBaseBox.Text = _parametriSetup.LeggiParametroString(ApiRemoteProcessedBaseKey);
        }

        SetComboSelection(onlineBox, _parametriSetup.LeggiParametro(ApiRaceOnlineFlagKey, 0));
        SetComboSelection(indexBox, _parametriSetup.LeggiParametro(ApiRaceIndexFlagKey, 1));
        SetComboSelection(freeBox, _parametriSetup.LeggiParametro(ApiRaceFreeFlagKey, 0));

        if (raceIdBox is not null)
        {
            raceIdBox.Text = _parametriSetup.LeggiParametroString(ApiLastRaceIdKey);
        }
    }

    private void SaveRaceUploadSettings()
    {
        var raceTypeBox = this.FindControl<Avalonia.Controls.TextBox>("ApiRaceTypeIdTextBox");
        var pathBaseBox = this.FindControl<Avalonia.Controls.TextBox>("ApiPathBaseTextBox");
        var remoteBaseBox = this.FindControl<Avalonia.Controls.TextBox>("ApiRemoteProcessedBasePathTextBox");
        var onlineBox = this.FindControl<Avalonia.Controls.ComboBox>("ApiEventoInLineaComboBox");
        var indexBox = this.FindControl<Avalonia.Controls.ComboBox>("ApiTipoIndexComboBox");
        var freeBox = this.FindControl<Avalonia.Controls.ComboBox>("ApiFreeEventComboBox");
        var raceIdBox = this.FindControl<Avalonia.Controls.TextBox>("ApiRaceIdTextBox");

        _parametriSetup.AggiornaParametro(ApiRaceTypeKey, raceTypeBox?.Text ?? string.Empty);
        _parametriSetup.AggiornaParametro(ApiRacePathBaseKey, pathBaseBox?.Text ?? string.Empty);
        _parametriSetup.AggiornaParametro(ApiRemoteProcessedBaseKey, remoteBaseBox?.Text ?? string.Empty);
        _parametriSetup.AggiornaParametro(ApiRaceOnlineFlagKey, GetComboSelection(onlineBox).ToString());
        _parametriSetup.AggiornaParametro(ApiRaceIndexFlagKey, GetComboSelection(indexBox).ToString());
        _parametriSetup.AggiornaParametro(ApiRaceFreeFlagKey, GetComboSelection(freeBox).ToString());
        _parametriSetup.AggiornaParametro(ApiLastRaceIdKey, raceIdBox?.Text ?? string.Empty);
        _parametriSetup.SalvaParametriSetup();
    }

    private static void SetComboSelection(Avalonia.Controls.ComboBox? comboBox, int value)
    {
        if (comboBox is null)
        {
            return;
        }

        comboBox.SelectedIndex = value;
    }

    private static int GetComboSelection(Avalonia.Controls.ComboBox? comboBox)
    {
        return comboBox?.SelectedIndex is int index && index >= 0 ? index : 0;
    }

    private async void CreateRace_Click(object? sender, RoutedEventArgs e)
    {
        var loginBox = this.FindControl<Avalonia.Controls.TextBox>("ApiLoginTextBox");
        var passwordBox = this.FindControl<Avalonia.Controls.TextBox>("ApiPasswordTextBox");
        var raceTypeBox = this.FindControl<Avalonia.Controls.TextBox>("ApiRaceTypeIdTextBox");
        var raceDescriptionBox = this.FindControl<Avalonia.Controls.TextBox>("ApiRaceDescriptionTextBox");
        var raceStartPicker = this.FindControl<CalendarDatePicker>("ApiRaceStartDatePicker");
        var raceEndPicker = this.FindControl<CalendarDatePicker>("ApiRaceEndDatePicker");
        var pathBaseBox = this.FindControl<Avalonia.Controls.TextBox>("ApiPathBaseTextBox");
        var localitaBox = this.FindControl<Avalonia.Controls.TextBox>("ApiLocalitaTextBox");
        var raceIdBox = this.FindControl<Avalonia.Controls.TextBox>("ApiRaceIdTextBox");
        var eventoInLineaBox = this.FindControl<Avalonia.Controls.ComboBox>("ApiEventoInLineaComboBox");
        var tipoIndexBox = this.FindControl<Avalonia.Controls.ComboBox>("ApiTipoIndexComboBox");
        var freeBox = this.FindControl<Avalonia.Controls.ComboBox>("ApiFreeEventComboBox");
        var outputBox = this.FindControl<Avalonia.Controls.TextBox>("ApiOutputTextBox");
        var statusBlock = this.FindControl<TextBlock>("ApiStatusTextBlock");
        var createButton = this.FindControl<Avalonia.Controls.Button>("ApiCreateRaceButton");
        var uploadButton = this.FindControl<Avalonia.Controls.Button>("ApiUploadButton");

        if (loginBox is null || passwordBox is null || raceTypeBox is null || raceDescriptionBox is null || raceStartPicker is null ||
            raceEndPicker is null || pathBaseBox is null || localitaBox is null || raceIdBox is null ||
            eventoInLineaBox is null || tipoIndexBox is null || freeBox is null ||
            outputBox is null || statusBlock is null || createButton is null || uploadButton is null)
        {
            return;
        }

        var login = loginBox.Text?.Trim() ?? string.Empty;
        var password = passwordBox.Text ?? string.Empty;
        var descriptionRaw = raceDescriptionBox.Text?.Trim() ?? string.Empty;

        if (string.IsNullOrWhiteSpace(login) || string.IsNullOrWhiteSpace(password) || string.IsNullOrWhiteSpace(descriptionRaw))
        {
            statusBlock.Text = "Inserisci login, password e descrizione gara.";
            return;
        }

        if (!long.TryParse(raceTypeBox.Text?.Trim(), out var tipoGaraId) || tipoGaraId <= 0)
        {
            statusBlock.Text = "Tipo gara non valido.";
            return;
        }

        if (!raceStartPicker.SelectedDate.HasValue)
        {
            statusBlock.Text = "Seleziona la data di inizio gara.";
            return;
        }

        createButton.IsEnabled = false;
        uploadButton.IsEnabled = false;
        statusBlock.Text = "Creazione gara in corso...";
        outputBox.Text = string.Empty;

        try
        {
            var startDate = DateOnly.FromDateTime(raceStartPicker.SelectedDate.Value.Date);
            var endDate = raceEndPicker.SelectedDate.HasValue
                ? DateOnly.FromDateTime(raceEndPicker.SelectedDate.Value.Date)
                : startDate;
            var sanitizedDescription = SanitizeRaceDescription(descriptionRaw);

            SaveApiTestCredentials();
            SaveRaceUploadSettings();

            var loginResponse = await LoginAsync(login, password).ConfigureAwait(true);

            var saveResponse = await _apiClient.SaveRaceAsync(
                new RaceSaveRequest
                {
                    IdGara = 0,
                    Description = sanitizedDescription,
                    StartDate = startDate,
                    EndDate = endDate,
                    TipoGaraId = tipoGaraId,
                    EventoInLinea = GetComboSelection(eventoInLineaBox),
                    TipoIndicizzazione = GetComboSelection(tipoIndexBox),
                    FreeEvent = GetComboSelection(freeBox),
                    PathBase = pathBaseBox.Text?.Trim(),
                    Localita = localitaBox.Text?.Trim(),
                },
                CancellationToken.None);

            var raceId = ExtractRaceId(saveResponse.Body);
            if (raceId <= 0)
            {
                throw new InvalidOperationException("Impossibile ricavare id_gara dalla risposta di salvataggio.");
            }

            raceIdBox.Text = raceId.ToString();
            SaveRaceUploadSettings();

            var createPointsResponse = await _apiClient.CreateRacePointsAsync(raceId, CancellationToken.None);

            var sb = new StringBuilder();
            sb.AppendLine($"Login HTTP: {(int)loginResponse.StatusCode} {loginResponse.StatusCode}");
            sb.AppendLine($"Save Gara HTTP: {(int)saveResponse.StatusCode} {saveResponse.StatusCode}");
            sb.AppendLine($"Crea Punti HTTP: {(int)createPointsResponse.StatusCode} {createPointsResponse.StatusCode}");
            sb.AppendLine($"id_gara: {raceId}");
            sb.AppendLine();
            sb.AppendLine("Gara creata e avvio creazione punti richiesto.");

            outputBox.Text = sb.ToString();
            statusBlock.Text = "Gara creata.";
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Race creation failed in Avalonia tab.");
            outputBox.Text = ex.ToString();
            statusBlock.Text = "Errore durante la creazione gara.";
        }
        finally
        {
            createButton.IsEnabled = true;
            uploadButton.IsEnabled = true;
        }
    }

    private async void UploadProcessed_Click(object? sender, RoutedEventArgs e)
    {
        var loginBox = this.FindControl<Avalonia.Controls.TextBox>("ApiLoginTextBox");
        var passwordBox = this.FindControl<Avalonia.Controls.TextBox>("ApiPasswordTextBox");
        var raceIdBox = this.FindControl<Avalonia.Controls.TextBox>("ApiRaceIdTextBox");
        var pathBaseBox = this.FindControl<Avalonia.Controls.TextBox>("ApiPathBaseTextBox");
        var remoteBaseBox = this.FindControl<Avalonia.Controls.TextBox>("ApiRemoteProcessedBasePathTextBox");
        var outputBox = this.FindControl<Avalonia.Controls.TextBox>("ApiOutputTextBox");
        var statusBlock = this.FindControl<TextBlock>("ApiStatusTextBlock");
        var createButton = this.FindControl<Avalonia.Controls.Button>("ApiCreateRaceButton");
        var uploadButton = this.FindControl<Avalonia.Controls.Button>("ApiUploadButton");

        if (loginBox is null || passwordBox is null || raceIdBox is null || pathBaseBox is null || remoteBaseBox is null ||
            outputBox is null || statusBlock is null || createButton is null || uploadButton is null)
        {
            return;
        }

        var login = loginBox.Text?.Trim() ?? string.Empty;
        var password = passwordBox.Text ?? string.Empty;
        var racePathBase = pathBaseBox.Text?.Trim() ?? string.Empty;
        var remoteProcessedBase = remoteBaseBox.Text?.Trim() ?? string.Empty;

        if (!long.TryParse(raceIdBox.Text?.Trim(), out var raceId) || raceId <= 0)
        {
            statusBlock.Text = "id_gara non valido.";
            return;
        }

        if (string.IsNullOrWhiteSpace(login) || string.IsNullOrWhiteSpace(password))
        {
            statusBlock.Text = "Inserisci login e password.";
            return;
        }

        if (string.IsNullOrWhiteSpace(_model.DestinationPath) || !Directory.Exists(_model.DestinationPath))
        {
            statusBlock.Text = "Cartella destinazione locale non valida.";
            return;
        }

        if (string.IsNullOrWhiteSpace(remoteProcessedBase))
        {
            statusBlock.Text = "Inserisci il path base remoto per le foto processate.";
            return;
        }

        createButton.IsEnabled = false;
        uploadButton.IsEnabled = false;
        statusBlock.Text = "Upload foto processate in corso...";

        try
        {
            SaveApiTestCredentials();
            SaveRaceUploadSettings();
            await LoginAsync(login, password).ConfigureAwait(true);

            var files = Directory
                .EnumerateFiles(_model.DestinationPath, "*.*", SearchOption.AllDirectories)
                .Where(IsSupportedImage)
                .ToList();

            if (files.Count == 0)
            {
                statusBlock.Text = "Nessuna immagine trovata in destinazione.";
                outputBox.Text = "Nessun file processato da inviare.";
                return;
            }

            var uploaded = 0;
            var sb = new StringBuilder();
            sb.AppendLine($"File da inviare: {files.Count}");

            foreach (var file in files)
            {
                var relativePath = Path.GetRelativePath(_model.DestinationPath, file);
                var relativeDir = Path.GetDirectoryName(relativePath) ?? string.Empty;
                var remotePath = CombineRemotePath(remoteProcessedBase, racePathBase, relativeDir);

                await using var stream = File.OpenRead(file);
                await _apiClient.UploadFileToReceiverAsync(
                    new ReceiveFileUploadRequest
                    {
                        FileName = Path.GetFileName(file),
                        FileStream = stream,
                        DestinationPath = remotePath,
                        OverwriteRemoteFile = true,
                    },
                    CancellationToken.None).ConfigureAwait(true);

                uploaded++;
                if (uploaded % 20 == 0 || uploaded == files.Count)
                {
                    statusBlock.Text = $"Upload foto: {uploaded}/{files.Count}";
                }
            }

            sb.AppendLine($"Upload completato: {uploaded}/{files.Count}");
            statusBlock.Text = "Creazione punti foto e indicizzazione in corso...";

            await _apiClient.CreateRacePointsAsync(raceId, CancellationToken.None).ConfigureAwait(true);
            var pointIds = await LoadPointIdsWithRetryAsync(raceId, CancellationToken.None).ConfigureAwait(true);

            foreach (var pointId in pointIds)
            {
                await _apiClient.IndexRacePointAsync(pointId, CancellationToken.None).ConfigureAwait(true);
            }

            sb.AppendLine($"Punti foto indicizzati: {pointIds.Count}");
            outputBox.Text = sb.ToString();
            statusBlock.Text = "Upload e indicizzazione completati.";
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Upload flow failed in Avalonia tab.");
            outputBox.Text = ex.ToString();
            statusBlock.Text = "Errore durante upload/indicizzazione.";
        }
        finally
        {
            createButton.IsEnabled = true;
            uploadButton.IsEnabled = true;
        }
    }

    private async Task<RawEndpointResponse> LoginAsync(string login, string password)
    {
        return await _apiClient.LoginAdminAsync(
            new AdminLoginRequest
            {
                Login = login,
                Password = password,
                Command = "check",
            },
            CancellationToken.None).ConfigureAwait(false);
    }

    private async Task<List<long>> LoadPointIdsWithRetryAsync(long raceId, CancellationToken cancellationToken)
    {
        const int maxAttempts = 10;

        for (var attempt = 1; attempt <= maxAttempts; attempt++)
        {
            var response = await _apiClient.GetRaceDetailAsync(raceId, cancellationToken).ConfigureAwait(false);
            var ids = ExtractPointIds(response.Body);

            if (ids.Count > 0)
            {
                return ids;
            }

            await Task.Delay(TimeSpan.FromSeconds(2), cancellationToken).ConfigureAwait(false);
        }

        return new List<long>();
    }

    private static List<long> ExtractPointIds(string html)
    {
        var ids = Regex
            .Matches(html ?? string.Empty, @"indexFoto\((\d+)\)", RegexOptions.IgnoreCase)
            .Select(m => long.TryParse(m.Groups[1].Value, out var value) ? value : 0L)
            .Where(v => v > 0)
            .Distinct()
            .ToList();

        return ids;
    }

    private static string SanitizeRaceDescription(string value)
    {
        if (string.IsNullOrWhiteSpace(value))
        {
            return string.Empty;
        }

        var cleaned = Regex.Replace(value, "[^A-Za-z0-9 _-]", " ");
        return Regex.Replace(cleaned, "\\s+", " ").Trim();
    }

    private static string CombineRemotePath(string remoteBase, string racePathBase, string relativeDir)
    {
        var segments = new[] { remoteBase, racePathBase, relativeDir }
            .Where(s => !string.IsNullOrWhiteSpace(s))
            .Select(s => s!.Replace('\\', '/').Trim('/'));

        var joined = string.Join('/', segments);
        return string.IsNullOrWhiteSpace(joined) ? "/" : joined + "/";
    }

    private static bool IsSupportedImage(string filePath)
    {
        var extension = Path.GetExtension(filePath);
        if (string.IsNullOrWhiteSpace(extension))
        {
            return false;
        }

        return extension.Equals(".jpg", StringComparison.OrdinalIgnoreCase)
            || extension.Equals(".jpeg", StringComparison.OrdinalIgnoreCase)
            || extension.Equals(".png", StringComparison.OrdinalIgnoreCase)
            || extension.Equals(".bmp", StringComparison.OrdinalIgnoreCase)
            || extension.Equals(".gif", StringComparison.OrdinalIgnoreCase);
    }

    private static long ExtractRaceId(string html)
    {
        if (string.IsNullOrWhiteSpace(html))
        {
            return 0;
        }

        var inputMatch = Regex.Match(
            html,
            "id=\\\"id_gara\\\"[^>]*value=\\\"(?<id>\\d+)\\\"",
            RegexOptions.IgnoreCase);

        if (inputMatch.Success && long.TryParse(inputMatch.Groups["id"].Value, out var idFromInput))
        {
            return idFromInput;
        }

        var labelMatch = Regex.Match(html, "Descrizione \\(id: (?<id>\\d+)\\)", RegexOptions.IgnoreCase);
        return labelMatch.Success && long.TryParse(labelMatch.Groups["id"].Value, out var idFromLabel)
            ? idFromLabel
            : 0;
    }
}