namespace Biskilog_Accounting.Client.Models
{
    /// <summary>
    /// Structure of the sidebar navigation menu items
    /// </summary>
    public class NavItem
    {
        /// <summary>
        /// The unique id of the menu item
        /// </summary>
        public double Id { get; set; }
        /// <summary>
        /// The title of the menu item to display
        /// </summary>
        public string Title { get; set; } = string.Empty;
        /// <summary>
        /// The description of the menu item or description of the content of the page
        /// </summary>
        public string Description { get; set; } = string.Empty;
        /// <summary>
        /// The link to open the specified page tied to the menu item
        /// </summary>
        public string Link { get; set; } = string.Empty;
        /// <summary>
        /// The icon of the menu item
        /// </summary>
        public string Icon { get; set; } = string.Empty;
        /// <summary>
        /// Children or sub menu item
        /// </summary>
        public List<NavItem> Children { get; set; } = new List<NavItem>();
    }
    /// <summary>
    /// Contains the list of menu Items
    /// </summary>
    public static class Menu
    {
        public static IEnumerable<NavItem> MenuList()
        {
            var menuItems = new List<NavItem>{
                new NavItem()
                {
                    Id = 1,
                    Description = "Analytics page",
                    Icon = "bx-home-circle",
                    Link = "",
                    Title = "Dashboard"
                },
                new NavItem()
                    {
                        Id = 2,
                    Description = "Customers",
                    Icon = "bx-users",
                    Link = "customers",
                    Title = "Customers"
                },
                new NavItem()
                    {
                    Id = 3,
                    Description = "Employees",
                    Icon = "bx-users",
                    Link = "employees",
                    Title = "Employees"
                },
                new NavItem()
                    {
                        Id = 4,
                    Description = "Products",
                    Icon = "bx-box",
                    Link = "",
                    Title = "Products",
                    Children = new List<NavItem>
                        {
                            new NavItem
                            {
                                Id = 4.1,
                                Description = "Inventory",
                                Title = "Inventory"
                            },
                            new NavItem
                            {
                                Id = 4.2,
                                Description = "Inventory",
                                Title = "Bulk Price Changes"
                            },
                            new NavItem
                            {
                                Id = 4.3,
                                Description = "Inventory",
                                Title = "Products Statistics",
                                Icon = "bx-detail"
                            }
                        }
                },
        };

            var uniqueIds = new HashSet<double>();

            //Validates list to check if there are no duplicate Ids
            foreach (var menuItem in menuItems)
            {
                if (!uniqueIds.Add(menuItem.Id))
                {
                    throw new Exception($"Duplicate Id found: {menuItem.Id}");
                }
            }

            return menuItems;
        }
    }
}