@inherits LayoutComponentBase
@inject AuthenticationStateProvider AuthStateProvider
@inject NavigationManager Nav
@inject IUserNotificationService UserNotificationService
@inject IJSRuntime JSRuntime
@implements IDisposable
@using System.Security.Claims

<MudThemeProvider Theme="_theme" @bind-IsDarkMode="_isDarkMode" />
<MudPopoverProvider />
<MudDialogProvider />
<MudSnackbarProvider />

<MudLayout>
    <MudAppBar Elevation="0" Style="background: #0F172A; border-bottom: 1px solid rgba(255, 255, 255, 0.08);">
        <MudIconButton Icon="@Icons.Material.Filled.Menu" Color="Color.Inherit" Edge="Edge.Start" OnClick="ToggleDrawer" Class="d-flex d-md-none mr-2" />
        <MudSpacer />
        <MudIconButton Icon="@(_isDarkMode ? Icons.Material.Filled.LightMode : Icons.Material.Filled.DarkMode)"
                       Color="Color.Inherit"
                       OnClick="ToggleDarkMode"
                       Class="mr-2" />
    </MudAppBar>

    <MudDrawer @bind-Open="_drawerOpen" ClipMode="DrawerClipMode.Never" Elevation="0" Variant="DrawerVariant.Mini" OpenMiniOnHover="false" Class="modern-drawer">
        <NavMenu OnToggleDrawer="ToggleDrawer" />
    </MudDrawer>

    <MudMainContent>
        <MudContainer MaxWidth="MaxWidth.Large" Class="mt-4 pb-8">
            @Body
        </MudContainer>
    </MudMainContent>

    <AuthorizeView>
        <Authorized>
            <ChatbotWidget />
        </Authorized>
    </AuthorizeView>
</MudLayout>

@code {
    private bool _drawerOpen = true;
    private bool _isDarkMode;

    protected override void OnInitialized()
    {
        UserNotificationService.OnUserDeleted += HandleUserDeleted;
    }

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender)
        {
            try
            {
                var saved = await JSRuntime.InvokeAsync<string>("localStorage.getItem", "darkMode");
                if (!string.IsNullOrEmpty(saved))
                {
                    _isDarkMode = bool.Parse(saved);
                    StateHasChanged();
                }
            }
            catch
            {
                // Ignored during prerendering/SSR
            }
        }
    }

    private async Task ToggleDarkMode()
    {
        _isDarkMode = !_isDarkMode;
        await JSRuntime.InvokeVoidAsync("localStorage.setItem", "darkMode", _isDarkMode.ToString().ToLower());
    }

    private async Task HandleUserDeleted(int deletedUserId)
    {
        var state = await AuthStateProvider.GetAuthenticationStateAsync();
        var idClaim = state.User.FindFirst(ClaimTypes.NameIdentifier)?.Value;
        if (idClaim != null && int.TryParse(idClaim, out var myId) && myId == deletedUserId)
        {
            await InvokeAsync(() => Nav.NavigateTo("/auth/logout", forceLoad: true));
        }
    }

    public void Dispose()
    {
        UserNotificationService.OnUserDeleted -= HandleUserDeleted;
    }

    private readonly MudTheme _theme = new()
    {
        PaletteLight = new PaletteLight
        {
            Primary = "#1E293B",
            PrimaryDarken = "#0F172A",
            PrimaryLighten = "#475569",
            Secondary = "#0EA5E9",
            SecondaryDarken = "#0284C7",
            AppbarBackground = "#0F172A",
            Background = "#F8FAFC",
            DrawerBackground = "#0F172A",
            DrawerText = "#94A3B8",
            DrawerIcon = "#94A3B8",
            Surface = "#FFFFFF",
            TextPrimary = "#0F172A",
            TextSecondary = "#475569",
        },
        PaletteDark = new PaletteDark
        {
            Primary = "#0EA5E9",
            PrimaryDarken = "#0284C7",
            PrimaryLighten = "#38BDF8",
            Secondary = "#0EA5E9",
            SecondaryDarken = "#0284C7",
            AppbarBackground = "#0F172A",
            AppbarText = "#F8FAFC",
            Background = "#0B0F19",
            DrawerBackground = "#0F172A",
            DrawerText = "#94A3B8",
            DrawerIcon = "#94A3B8",
            Surface = "#1E293B",
            TextPrimary = "#F8FAFC",
            TextSecondary = "#94A3B8",
            ActionDefault = "#94A3B8",
            Divider = "rgba(255, 255, 255, 0.08)",
        }
    };

    private void ToggleDrawer() => _drawerOpen = !_drawerOpen;
}