@namespace Oqtane.Themes.Controls
@inherits ThemeControlBase
@inject NavigationManager NavigationManager
@inject IPageService PageService
@inject ISettingService SettingService

@if (ShowLanguageSwitcher)
{
    <LanguageSwitcher ButtonClass="@ButtonClass" DropdownAlignment="@LanguageDropdownAlignment" />
}

@if (ShowEditMode && (_showEditMode || (PageState.Page.IsPersonalizable && PageState.User != null && UserSecurity.IsAuthorized(PageState.User, RoleNames.Registered))))
{
    <form method="post" class="app-form-inline" @formname="EditModeForm" @onsubmit="@(async () => await ToggleEditMode(PageState.EditMode))" data-enhance>
        <input type="hidden" name="@Constants.RequestVerificationToken" value="@SiteState.AntiForgeryToken" />
        @if (PageState.EditMode)
        {
            <button type="submit" class="btn @ButtonClass active" aria-pressed="true" autocomplete="off">
                <span class="oi oi-pencil"></span>
            </button>
        }
        else
        {
            <button type="submit" class="btn @ButtonClass" aria-pressed="false" autocomplete="off">
                <span class="oi oi-pencil"></span>
            </button>
        }
    </form>
}

@if (_canViewAdminDashboard || UserSecurity.IsAuthorized(PageState.User, PermissionNames.Edit, PageState.Page.PermissionList))
{
    @if (PageState.RenderMode == RenderModes.Interactive)
    {
        <ControlPanelInteractive PageState="@_pageState" SiteState="@SiteState" ButtonClass="@ButtonClass" ContainerClass="@ContainerClass" HeaderClass="@HeaderClass" BodyClass="@BodyClass" ShowLanguageSwitcher="@ShowLanguageSwitcher" LanguageDropdownAlignment="@LanguageDropdownAlignment" CanViewAdminDashboard="@_canViewAdminDashboard" />
    }
    else
    {
        <ControlPanelInteractive PageState="@_pageState" SiteState="@SiteState" ButtonClass="@ButtonClass" ContainerClass="@ContainerClass" HeaderClass="@HeaderClass" BodyClass="@BodyClass" ShowLanguageSwitcher="@ShowLanguageSwitcher" LanguageDropdownAlignment="@LanguageDropdownAlignment" CanViewAdminDashboard="@_canViewAdminDashboard" @rendermode="@InteractiveRenderMode.GetInteractiveRenderMode(PageState.Site.Runtime, false)" />
    }
}

@code {
    [Parameter]
    public string ButtonClass { get; set; } = "btn-outline-secondary";

    [Parameter]
    public string ContainerClass { get; set; } = "offcanvas offcanvas-end";

    [Parameter]
    public string HeaderClass { get; set; } = "offcanvas-header";

    [Parameter]
    public string BodyClass { get; set; } = "offcanvas-body overflow-auto";

    [Parameter]
    public bool ShowLanguageSwitcher { get; set; } = true;

    [Parameter]
    public string LanguageDropdownAlignment { get; set; } = string.Empty; // Empty or Left or Right

    /// <summary>
    /// Ability to hide the Edit Mode toggle button
    /// </summary>
    [Parameter]
    public bool ShowEditMode { get; set; } = true;

    private PageState _pageState;
    private bool _canViewAdminDashboard = false;
    private bool _showEditMode = false; // internal state (not the same as ShowEditMode parameter)

    protected override void OnParametersSet()
    {
        _canViewAdminDashboard = CanViewAdminDashboard();

        _showEditMode = false;
        if (UserSecurity.IsAuthorized(PageState.User, PermissionNames.Edit, PageState.Page.PermissionList))
        {
            _showEditMode = true;
        }
        else
        {
            foreach (var module in PageState.Modules)
            {
                if (UserSecurity.IsAuthorized(PageState.User, PermissionNames.Edit, module.PermissionList))
                {
                    _showEditMode = true;
                    break;
                }
            }
        }

        // trim PageState to mitigate page bloat caused by Blazor serializing/encrypting state when crossing render mode boundaries
        _pageState = new PageState
        {
            Alias = PageState.Alias,
            Site = new Site
            {
                DefaultContainerType = PageState.Site.DefaultContainerType,
                Settings = PageState.Site.Settings,
                Themes = PageState.Site.Themes
            },
            Page = PageState.Page,
            User = PageState.User,
            Uri = PageState.Uri,
            Route = PageState.Route,
            RenderMode = PageState.RenderMode,
            Runtime = PageState.Runtime
        };
    }

    private bool CanViewAdminDashboard()
    {
        var admin = PageState.Pages.FirstOrDefault(item => item.Path == "admin");
        if (admin != null)
        {
            foreach (var page in PageState.Pages.Where(item => item.ParentId == admin?.PageId))
            {
                if (UserSecurity.IsAuthorized(PageState.User, PermissionNames.View, page.PermissionList))
                {
                    return true;
                }
            }
        }
        return false;
    }

    private async Task ToggleEditMode(bool editMode)
    {
        Page page = null;
        if (PageState.Page.IsPersonalizable && PageState.User != null && UserSecurity.IsAuthorized(PageState.User, RoleNames.Registered))
        {
            page = await PageService.AddPageAsync(PageState.Page.PageId, PageState.User.UserId);
            PageState.EditMode = true;
        }

        if (_showEditMode)
        {
            PageState.EditMode = !editMode;

            if (PageState.User != null) 
            {
                // preserve edit mode for authenticated users
                await SettingService.AddOrUpdateSettingAsync(EntityNames.User, PageState.User.UserId, "CP-editmode", (PageState.EditMode) ? PageState.Page.PageId.ToString() : "-1", false);
            }

            // preserve other querystring parameters
            if (PageState.QueryString.ContainsKey("edit")) PageState.QueryString.Remove("edit");
            PageState.QueryString.Add("edit", PageState.EditMode.ToString().ToLower());
            var url = PageState.Route.AbsolutePath + Utilities.CreateQueryString(PageState.QueryString);
            NavigationManager.NavigateTo(url);
        }
        else
        {
            if (PageState.Page.IsPersonalizable && PageState.User != null && UserSecurity.IsAuthorized(PageState.User, RoleNames.Registered))
            {
                NavigationManager.NavigateTo(NavigateUrl(page.Path, "edit=" + PageState.EditMode.ToString().ToLower()));
            }
        }
    }
}