@namespace Oqtane.Modules.Controls
@inherits ModuleControlBase

<CascadingValue Value="this" IsFixed="true">
    <div class="container-fluid">
        <div class="form-group">
            <ul class="nav nav-tabs" role="tablist">
                @foreach (TabPanel tabPanel in _tabPanels)
                {
                    <li class="nav-item" @key="tabPanel.Name">
                        @if (tabPanel.Name == ActiveTab)
                        {
                            <a class="nav-link active" data-bs-toggle="tab" href="#@tabPanel.Name" role="tab" @onclick:preventDefault="true">
                                @tabPanel.DisplayHeading()
                            </a>
                        }
                        else
                        {
                            <a class="nav-link" data-bs-toggle="tab" href="#@tabPanel.Name" role="tab" @onclick:preventDefault="true">
                                @tabPanel.DisplayHeading()
                            </a>
                        }
                    </li>
                }
            </ul>
            <div class="tab-content">
                <br />
                @ChildContent
            </div>
        </div>
    </div>
</CascadingValue>

@code {
    private List<TabPanel> _tabPanels;

    [Parameter]
    public RenderFragment ChildContent { get; set; } // contains the TabPanels

    [Parameter]
    public string ActiveTab { get; set; } // optional - defaults to first TabPanel if not specified. Can also be set using a "tab=" querystring parameter.

    [Parameter]
    public bool Refresh { get; set; } // optional - used in scenarios where TabPanels are added/removed dynamically within a parent form. ActiveTab may need to be reset as well when this property is used.

    protected override void OnParametersSet()
    {
        if (PageState.QueryString.ContainsKey("tab"))
        {
            ActiveTab = PageState.QueryString["tab"];
        }
        if (_tabPanels == null || Refresh)
        {
            _tabPanels = new List<TabPanel>();
        }
    }

    internal void AddTabPanel(TabPanel tabPanel)
    {
        if (!_tabPanels.Exists(item => item.Name == tabPanel.Name) && IsAuthorized(tabPanel))
        {
            _tabPanels.Add(tabPanel);
            StateHasChanged();
        }
        if (string.IsNullOrEmpty(ActiveTab))
        {
            ActiveTab = tabPanel.Name;
        }
    }

    private bool IsAuthorized(TabPanel tabPanel)
    {
        var authorized = false;
        switch (tabPanel.Security)
        {
            case null: // security not specified - assume SecurityAccessLevel.Anonymous
                authorized = true;
                break;
            case SecurityAccessLevel.Anonymous:
                authorized = true;
                break;
            case SecurityAccessLevel.View:
                authorized = UserSecurity.IsAuthorized(PageState.User, PermissionNames.View, ModuleState.Permissions);
                break;
            case SecurityAccessLevel.Edit:
                authorized = UserSecurity.IsAuthorized(PageState.User, PermissionNames.Edit, ModuleState.Permissions);
                break;
            case SecurityAccessLevel.Admin:
                authorized = UserSecurity.IsAuthorized(PageState.User, RoleNames.Admin);
                break;
            case SecurityAccessLevel.Host:
                authorized = UserSecurity.IsAuthorized(PageState.User, RoleNames.Host);
                break;
        }
        return authorized;
    }
}