namespace JdeScoping.SecureStoreManager.Services;

/// <summary>
/// Result from unsaved changes prompt.
/// </summary>
public enum UnsavedChangesResult
{
    Save,
    DontSave,
    Cancel
}

/// <summary>
/// Abstraction for platform-specific dialog operations.
/// Enables unit testing of view models that need to show dialogs.
/// </summary>
public interface IDialogService
{
    /// <summary>
    /// Shows an error message dialog.
    /// </summary>
    /// <param name="message">The error message to display.</param>
    /// <param name="title">The dialog title.</param>
    Task ShowErrorAsync(string message, string title);

    /// <summary>
    /// Shows an informational message dialog.
    /// </summary>
    /// <param name="message">The informational message to display.</param>
    /// <param name="title">The dialog title.</param>
    Task ShowInfoAsync(string message, string title);

    /// <summary>
    /// Shows a confirmation dialog with Yes/No options.
    /// </summary>
    /// <param name="message">The confirmation message to display.</param>
    /// <param name="title">The dialog title.</param>
    /// <returns>True if user clicked Yes, false otherwise.</returns>
    Task<bool> ShowConfirmationAsync(string message, string title);

    /// <summary>
    /// Shows a prompt for unsaved changes with Save/Don't Save/Cancel options.
    /// </summary>
    Task<UnsavedChangesResult> ShowUnsavedChangesPromptAsync();

    /// <summary>
    /// Shows a save file dialog.
    /// </summary>
    /// <param name="title">Dialog title.</param>
    /// <param name="fileTypeName">Display name for the file type (e.g., "Key Files").</param>
    /// <param name="pattern">File pattern (e.g., "*.key").</param>
    /// <param name="defaultExtension">Default extension (e.g., ".key").</param>
    /// <returns>Selected file path or null if cancelled.</returns>
    Task<string?> ShowSaveFileDialogAsync(string title, string fileTypeName, string pattern, string defaultExtension);

    /// <summary>
    /// Shows an open file dialog.
    /// </summary>
    /// <param name="title">Dialog title.</param>
    /// <param name="fileTypeName">Display name for the file type (e.g., "Key Files").</param>
    /// <param name="pattern">File pattern (e.g., "*.key").</param>
    /// <returns>Selected file path or null if cancelled.</returns>
    Task<string?> ShowOpenFileDialogAsync(string title, string fileTypeName, string pattern);
}