@namespace Oqtane.Modules.Admin.Pages
@inherits ModuleBase
@inject NavigationManager NavigationManager
@inject IPageService PageService
@inject IThemeService  ThemeService
@inject IStringLocalizer<Add> Localizer
@inject IStringLocalizer<SharedResources> SharedLocalizer


<form @ref="form" class="@(validated ? "was-validated" : "needs-validation")" novalidate>
    <TabStrip Refresh="@_refresh">
        <TabPanel Name="Settings" ResourceKey="Settings">
            @if (_themeList != null)
            {
                <div class="container">
                    <div class="row mb-1 align-items-center">
                        <Label Class="col-sm-3" For="name" HelpText="Enter the page name" ResourceKey="Name">Name: </Label>
                        <div class="col-sm-9">
                            <input id="name" class="form-control" @bind="@_name" required />
                        </div>
                    </div>
                    <div class="row mb-1 align-items-center">
                        <Label Class="col-sm-3" For="parent" HelpText="Select the parent for the page in the site hierarchy" ResourceKey="Parent">Parent: </Label>
                        <div class="col-sm-9">
                            <select id="parent" class="form-select" @onchange="(e => ParentChanged(e))" required>
                                <option value="-1">&lt;@Localizer["SiteRoot"]&gt;</option>
                                @foreach (Page page in PageState.Pages)
                                {
                                    <option value="@(page.PageId)">@(new string('-', page.Level * 2))@(page.Name)</option>
                                }
                            </select>
                        </div>
                    </div>
                    <div class="row mb-1 align-items-center">
                        <Label Class="col-sm-3" For="insert" HelpText="Select the location where you would like the page to be inserted in relation to other pages" ResourceKey="Insert">Insert: </Label>
                        <div class="col-sm-9">
                            <select id="insert" class="form-select" @bind="@_insert" required>
                                <option value="<<">@Localizer["AtBeginning"]</option>
                                @if (_children != null && _children.Count > 0)
                                {
                                    <option value="<">@Localizer["Before"]</option>
                                    <option value=">">@Localizer["After"]</option>
                                }
                                <option value=">>">@Localizer["AtEnd"]</option>
                            </select>
                            @if (_children != null && _children.Count > 0 && (_insert == "<" || _insert == ">"))
                            {
                                <select class="form-select" @bind="@_childid">
                                    <option value="-1">&lt;@Localizer["Page.Select"]&gt;</option>
                                    @foreach (Page page in _children)
                                    {
                                        <option value="@(page.PageId)">@(page.Name)</option>
                                    }
                                </select>
                            }
                        </div>
                    </div>
                    <div class="row mb-1 align-items-center">
                        <Label Class="col-sm-3" For="navigation" HelpText="Select whether the page is part of the site navigation or hidden" ResourceKey="Navigation">Navigation? </Label>
                        <div class="col-sm-9">
                            <select id="navigation" class="form-select" @bind="@_isnavigation" required>
                                <option value="True">@SharedLocalizer["Yes"]</option>
                                <option value="False">@SharedLocalizer["No"]</option>
                            </select>
                        </div>
                    </div>
                    <div class="row mb-1 align-items-center">
                        <Label Class="col-sm-3" For="clickable" HelpText="Select whether the link in the site navigation is enabled or disabled" ResourceKey="Clickable">Clickable? </Label>
                        <div class="col-sm-9">
                            <select id="clickable" class="form-select" @bind="@_isclickable" required>
                                <option value="True">@SharedLocalizer["Yes"]</option>
                                <option value="False">@SharedLocalizer["No"]</option>
                            </select>
                        </div>
                    </div>
                    <div class="row mb-1 align-items-center">
                        <Label Class="col-sm-3" For="path" HelpText="Optionally enter a url path for this page (ie. home ). If you do not provide a url path, the page name will be used. If the page is intended to be the root path specify '/'." ResourceKey="UrlPath">Url Path: </Label>
                        <div class="col-sm-9">
                            <input id="path" class="form-control" @bind="@_path" />
                        </div>
                    </div>
                    <div class="row mb-1 align-items-center">
                        <Label Class="col-sm-3" For="url" HelpText="Optionally enter a url which this page should redirect to when a user navigates to it" ResourceKey="Redirect">Redirect: </Label>
                        <div class="col-sm-9">
                            <input id="url" class="form-control" @bind="@_url" />
                        </div>
                    </div>
                </div>

                <Section Name="Appearance" ResourceKey="Appearance">
                    <div class="container">
                        <div class="row mb-1 align-items-center">
                            <Label Class="col-sm-3" For="title" HelpText="Optionally enter the page title. If you do not provide a page title, the page name will be used." ResourceKey="Title">Title: </Label>
                            <div class="col-sm-9">
                                <input id="title" class="form-control" @bind="@_title" />
                            </div>
                        </div>
                        <div class="row mb-1 align-items-center">
                            <Label Class="col-sm-3" For="meta" HelpText="Optionally enter meta tags (in exactly the form you want them to be included in the page output)." ResourceKey="Meta">Meta: </Label>
                            <div class="col-sm-9">
								<textarea id="meta" class="form-control" @bind="@_meta" rows="3"></textarea>
                            </div>
                        </div>
                        <div class="row mb-1 align-items-center">
                            <Label Class="col-sm-3" For="theme" HelpText="Select the theme for this page" ResourceKey="Theme">Theme: </Label>
                            <div class="col-sm-9">
                                <select id="theme" class="form-select" value="@_themetype" @onchange="(e => ThemeChanged(e))" required>
                                    @foreach (var theme in _themes)
                                    {
                                        <option value="@theme.TypeName">@theme.Name</option>
                                    }
                                </select>
                            </div>
                        </div>
                        <div class="row mb-1 align-items-center">
                            <Label Class="col-sm-3" For="container" HelpText="Select the default container for the page" ResourceKey="DefaultContainer">Default Container: </Label>
                            <div class="col-sm-9">
                                <select id="container" class="form-select" @bind="@_containertype" required>
                                    <option value="-">&lt;@Localizer["Container.Select"]&gt;</option>
                                    @foreach (var container in _containers)
                                    {
                                        <option value="@container.TypeName">@container.Name</option>
                                    }
                                </select>
                            </div>
                        </div>
                        <div class="row mb-1 align-items-center">
                            <Label Class="col-sm-3" For="icon" HelpText="Optionally provide an icon class name for this page which will be displayed in the site navigation" ResourceKey="Icon">Icon: </Label>
                            <div class="col-sm-9">
                                <input id="icon" class="form-control" @bind="@_icon" />
                            </div>
                        </div>
                        <div class="row mb-1 align-items-center">
                            <Label Class="col-sm-3" For="personalizable" HelpText="Select whether you would like users to be able to personalize this page with their own content" ResourceKey="Personalizable">Personalizable? </Label>
                            <div class="col-sm-9">
                                <select id="personalizable" class="form-select" @bind="@_ispersonalizable" required>
                                    <option value="True">@SharedLocalizer["Yes"]</option>
                                    <option value="False">@SharedLocalizer["No"]</option>
                                </select>
                            </div>
                        </div>
                    </div>
                </Section>
            }
        </TabPanel>
        <TabPanel Name="Permissions" ResourceKey="Permissions">
            <div class="container">
                <div class="row mb-1 align-items-center">
                    <PermissionGrid EntityName="@EntityNames.Page" Permissions="@_permissions" @ref="_permissionGrid" />
                </div>
            </div>
        </TabPanel>
        @if (_themeSettingsType != null)
        {
            <TabPanel Name="ThemeSettings" Heading="Theme Settings" ResourceKey="ThemeSettings">
                @ThemeSettingsComponent
            </TabPanel>
        }
    </TabStrip>
    <button type="button" class="btn btn-success" @onclick="SavePage">@SharedLocalizer["Save"]</button>
    <button type="button" class="btn btn-secondary" @onclick="Cancel">@SharedLocalizer["Cancel"]</button>
</form>

@code {
	public override SecurityAccessLevel SecurityAccessLevel => SecurityAccessLevel.Admin;

	private List<Theme> _themeList;
	private List<ThemeControl> _themes = new List<ThemeControl>();
	private List<ThemeControl> _containers = new List<ThemeControl>();
	private string _name;
	private string _title;
	private string _meta;
	private string _path = string.Empty;
	private string _parentid = "-1";
	private string _insert = ">>";
	private List<Page> _children;
	private int _childid = -1;
	private string _isnavigation = "True";
	private string _isclickable = "True";
	private string _url;
	private string _ispersonalizable = "False";
	private string _themetype = string.Empty;
	private string _containertype = string.Empty;
	private string _icon = string.Empty;
	private string _permissions = string.Empty;
	private PermissionGrid _permissionGrid;
	private Type _themeSettingsType;
	private object _themeSettings;
	private RenderFragment ThemeSettingsComponent { get; set; }
	private bool _refresh = false;
	private ElementReference form;
	private bool validated = false;

	protected override async Task OnInitializedAsync()
	{
		try
		{
			_themeList = await ThemeService.GetThemesAsync();
			_themes = ThemeService.GetThemeControls(_themeList);
			_themetype = PageState.Site.DefaultThemeType;
			_containers = ThemeService.GetContainerControls(_themeList, _themetype);
			_containertype = PageState.Site.DefaultContainerType;
			_children = PageState.Pages.Where(item => item.ParentId == null).ToList();
			_permissions = string.Empty;
			ThemeSettings();
		}
		catch (Exception ex)
		{
			await logger.LogError(ex, "Error Initializing Page {Error}", ex.Message);
			AddModuleMessage(Localizer["Error.Page.Initialize"], MessageType.Error);
		}
	}

	private async void ParentChanged(ChangeEventArgs e)
	{
		try
		{
			_parentid = (string)e.Value;
			_children = new List<Page>();
			if (_parentid == "-1")
			{
				foreach (Page p in PageState.Pages.Where(item => item.ParentId == null))
				{
					if (UserSecurity.IsAuthorized(PageState.User, PermissionNames.View, p.Permissions))
					{
						_children.Add(p);
					}
				}
			}
			else
			{
				foreach (Page p in PageState.Pages.Where(item => item.ParentId == int.Parse(_parentid)))
				{
					if (UserSecurity.IsAuthorized(PageState.User, PermissionNames.View, p.Permissions))
					{
						_children.Add(p);
					}
				}
			}
			StateHasChanged();
		}
		catch (Exception ex)
		{
			await logger.LogError(ex, "Error Loading Child Pages For Parent {PageId} {Error}", _parentid, ex.Message);
			AddModuleMessage(Localizer["Error.ChildPage.Load"], MessageType.Error);
		}
	}

	private async void ThemeChanged(ChangeEventArgs e)
	{
		try
		{
			_themetype = (string)e.Value;
			_containers = ThemeService.GetContainerControls(_themeList, _themetype);
			_containertype = "-";
			ThemeSettings();
			StateHasChanged();
		}
		catch (Exception ex)
		{
			await logger.LogError(ex, "Error Loading Pane Layouts For Theme {ThemeType} {Error}", _themetype, ex.Message);
			AddModuleMessage(Localizer["Error.Pane.Load"], MessageType.Error);
		}
	}

	private void ThemeSettings()
	{
		_themeSettingsType = null;
		var theme = _themeList.FirstOrDefault(item => item.Themes.Any(themecontrol => themecontrol.TypeName.Equals(_themetype)));
		if (theme != null && !string.IsNullOrEmpty(theme.ThemeSettingsType))
		{
			_themeSettingsType = Type.GetType(theme.ThemeSettingsType);
			if (_themeSettingsType != null)
			{
				ThemeSettingsComponent = builder =>
				{
					builder.OpenComponent(0, _themeSettingsType);
					builder.AddComponentReferenceCapture(1, inst => { _themeSettings = Convert.ChangeType(inst, _themeSettingsType); });
					builder.CloseComponent();
				};
			}
			_refresh = true;
		}
	}

	private async Task SavePage()
	{
		validated = true;
		var interop = new Interop(JSRuntime);
		if (await interop.FormValid(form))
		{
			Page page = null;
			try
			{
				if (!string.IsNullOrEmpty(_themetype) && _containertype != "-")
				{
					page = new Page();
					page.SiteId = PageState.Page.SiteId;
					page.Name = _name;
					page.Title = _title;

					if (string.IsNullOrEmpty(_path))
					{
						_path = _name;
					}
					if (_path.Contains("/"))
					{
						if (_path.EndsWith("/") && _path != "/")
						{
							_path = _path.Substring(0, _path.Length - 1);
						}
						_path = _path.Substring(_path.LastIndexOf("/") + 1);
					}

					if (_parentid == "-1")
					{
						page.ParentId = null;
						page.Path = Utilities.GetFriendlyUrl(_path);
					}
					else
					{
						page.ParentId = Int32.Parse(_parentid);
						var parent = PageState.Pages.Where(item => item.PageId == page.ParentId).FirstOrDefault();
						if (parent.Path == string.Empty)
						{
							page.Path = Utilities.GetFriendlyUrl(parent.Name) + "/" + Utilities.GetFriendlyUrl(_path);
						}
						else
						{
							page.Path = parent.Path + "/" + Utilities.GetFriendlyUrl(_path);
						}
					}

					var _pages = await PageService.GetPagesAsync(PageState.Site.SiteId);
					if (_pages.Any(item => item.Path == page.Path))
					{
						AddModuleMessage(string.Format(Localizer["Message.Page.Exists"], _path), MessageType.Warning);
						return;
					}

					if (page.ParentId == null && Constants.ReservedRoutes.Contains(page.Name.ToLower()))
					{
						AddModuleMessage(string.Format(Localizer["Message.Page.Reserved"], page.Name), MessageType.Warning);
						return;
					}

					Page child;
					switch (_insert)
					{
						case "<<":
							page.Order = 0;
							break;
						case "<":
							child = PageState.Pages.Where(item => item.PageId == _childid).FirstOrDefault();
							page.Order = child.Order - 1;
							break;
						case ">":
							child = PageState.Pages.Where(item => item.PageId == _childid).FirstOrDefault();
							page.Order = child.Order + 1;
							break;
						case ">>":
							page.Order = int.MaxValue;
							break;
					}

					page.IsNavigation = (_isnavigation == null ? true : Boolean.Parse(_isnavigation));
					page.IsClickable = (_isclickable == null ? true : Boolean.Parse(_isclickable));
					page.Url = _url;
					page.ThemeType = (_themetype != "-") ? _themetype : string.Empty;
					if (!string.IsNullOrEmpty(page.ThemeType) && page.ThemeType == PageState.Site.DefaultThemeType)
					{
						page.ThemeType = string.Empty;
					}
					page.DefaultContainerType = (_containertype != "-") ? _containertype : string.Empty;
					if (!string.IsNullOrEmpty(page.DefaultContainerType) && page.DefaultContainerType == PageState.Site.DefaultContainerType)
					{
						page.DefaultContainerType = string.Empty;
					}
					page.Icon = (_icon == null ? string.Empty : _icon);
					page.Permissions = _permissionGrid.GetPermissions();
					page.IsPersonalizable = (_ispersonalizable == null ? false : Boolean.Parse(_ispersonalizable));
					page.UserId = null;
					page.Meta = _meta;

                    page = await PageService.AddPageAsync(page);
                    await PageService.UpdatePageOrderAsync(page.SiteId, page.PageId, page.ParentId);

                    await logger.LogInformation("Page Added {Page}", page);
                    if (PageState.QueryString.ContainsKey("cp"))
                    {
                        NavigationManager.NavigateTo(NavigateUrl(PageState.Pages.First(item => item.PageId == int.Parse(PageState.QueryString["cp"])).Path));
                    }
                    else
                    {
                        NavigationManager.NavigateTo(NavigateUrl(page.Path));
                    }
                }
                else
                {
                    AddModuleMessage(Localizer["Message.Required.PageInfo"], MessageType.Warning);
                }

            }
            catch (Exception ex)
            {
                await logger.LogError(ex, "Error Saving Page {Page} {Error}", page, ex.Message);
                AddModuleMessage(Localizer["Error.Page.Save"], MessageType.Error);
            }
        }
        else
        {
            AddModuleMessage(SharedLocalizer["Message.InfoRequired"], MessageType.Warning);
        }
    }

    private void Cancel()
    {
        if (PageState.QueryString.ContainsKey("cp"))
        {
            NavigationManager.NavigateTo(NavigateUrl(PageState.Pages.First(item => item.PageId == int.Parse(PageState.QueryString["cp"])).Path));
        }
        else
        {
            NavigationManager.NavigateTo(NavigateUrl());
        }
    }
}