@using System.Net
@namespace Oqtane.Themes.Controls
@inject NavigationManager NavigationManager
@inject SiteState ComponentSiteState
@inject IUserService UserService
@inject IModuleDefinitionService ModuleDefinitionService
@inject IThemeService ThemeService
@inject IModuleService ModuleService
@inject IPageService PageService
@inject IPageModuleService PageModuleService
@inject ILogService logger
@inject ISettingService SettingService
@inject IJSRuntime jsRuntime
@inject IServiceProvider ServiceProvider
@inject ILogService LoggingService
@inject IStringLocalizer<ControlPanelInteractive> Localizer
@inject IStringLocalizer<SharedResources> SharedLocalizer

<button type="button" class="btn @ButtonClass ms-1" data-bs-toggle="offcanvas" data-bs-target="#offcanvasControlPanel" aria-controls="offcanvasControlPanel" @onclick="ClearMessage">
    <span class="oi oi-cog"></span>
</button>

<div class="@ContainerClass" tabindex="-1" data-bs-scroll="true" data-bs-backdrop="true" id="offcanvasControlPanel" aria-labelledby="offcanvasScrollingLabel">
    <div class="@HeaderClass">
        <h5 id="offcanvasScrollingLabel" class="offcanvas-title">@Localizer["ControlPanel"]</h5>
        <button type="button" class="btn-close text-reset" data-bs-dismiss="offcanvas" aria-label="Close" @onclick="ClearMessage"></button>
    </div>
    <div class="@BodyClass">
        <div class="container-fluid">
            @if (CanViewAdminDashboard)
            {
                <div class="row d-flex">
                    <div class="col">
                        <button type="button" data-bs-dismiss="offcanvas" class="btn btn-primary col-12" @onclick=@(async () => Navigate("Admin"))>@Localizer["AdminDash"]</button>
                    </div>
                </div>
                <hr class="app-rule" />
            }
            @if (UserSecurity.IsAuthorized(PageState.User, PermissionNames.Edit, PageState.Page.PermissionList))
            {
                <div class="row">
                    <div class="col text-center">
                        <label class="control-label">@Localizer["Page.Manage"] </label>
                    </div>
                </div>
                <div class="row d-flex mb-2">
                    <div class="col d-flex justify-content-between">
                        @if (PageState.Page.UserId == null)
                        {
                            <button type="button" class="btn btn-secondary col me-1" data-bs-dismiss="offcanvas" @onclick=@(async () => Navigate("Add"))>@SharedLocalizer["Add"]</button>
                        }
                        <button type="button" class="btn btn-secondary col" data-bs-dismiss="offcanvas" @onclick=@(async () => Navigate("Edit"))>@SharedLocalizer["Edit"]</button>
                        <button type="button" class="btn btn-danger col ms-1" @onclick="ConfirmDelete">@SharedLocalizer["Delete"]</button>
                    </div>
                </div>
                <div class="row d-flex">
                    <div class="col">
                        @if (UserSecurity.ContainsRole(PageState.Page.PermissionList, PermissionNames.View, RoleNames.Everyone))
                        {
                            <button type="button" class="btn btn-secondary col-12" @onclick=@(async () => Publish("unpublish"))>@Localizer["Page.Unpublish"]</button>
                        }
                        else
                        {
                            <button type="button" class="btn btn-secondary col-12" @onclick=@(async () => Publish("publish"))>@Localizer["Page.Publish"]</button>
                        }
                    </div>
                </div>
                <hr class="app-rule" />

                @if (_deleteConfirmation)
                {
                    <div class="app-admin-modal">
                        <div class="modal" tabindex="-1" role="dialog">
                            <div class="modal-dialog">
                                <div class="modal-content">
                                    <div class="modal-header">
                                        <h5 class="modal-title">@Localizer["Page.Delete"]</h5>
                                        <button type="button" class="btn-close" aria-label="Close" @onclick="ConfirmDelete"></button>
                                    </div>
                                    <div class="modal-body">
                                        <p>@Localizer["Confirm.Page.Delete"]</p>
                                    </div>
                                    <div class="modal-footer">
                                        <button type="button" class="btn btn-danger" @onclick="DeletePage">@SharedLocalizer["Delete"]</button>
                                        <button type="button" class="btn btn-secondary" @onclick="ConfirmDelete">@SharedLocalizer["Cancel"]</button>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                }

                <div class="row">
                    <div class="col text-center">
                        <label for="Module" class="control-label">@Localizer["Module.Manage"]</label>
                        <select class="form-select" @onchange="(e => ModuleTypeChanged(e))">
                            <option value="new">@Localizer["Module.AddNew"]</option>
                            @if (PageState.Page.UserId == null)
                            {
                                <option value="add">@Localizer["Module.AddExisting"]</option>
                                <option value="copy">@Localizer["Module.CopyExisting"]</option>
                            }
                        </select>
                        @if (_moduleType == "new")
                        {
                            @if (_moduleDefinitions != null)
                            {
                                <select class="form-select mt-1" @onchange="(e => CategoryChanged(e))">
                                    @foreach (var category in _categories)
                                    {
                                        if (category == _category)
                                        {
                                            <option value="@category" selected>@category @Localizer["Modules"]</option>
                                        }
                                        else
                                        {
                                            <option value="@category">@category @Localizer["Modules"]</option>
                                        }
                                    }
                                </select>
                                <select class="form-select mt-1" @onchange="(e => ModuleChanged(e))">
                                    @if (_moduleDefinitionName == "-")
                                    {
                                        <option value="-" selected>&lt;@Localizer["Module.Select"]&gt;</option>
                                    }
                                    else
                                    {
                                        <option value="-">&lt;@Localizer["Module.Select"]&gt;</option>
                                    }
                                    @foreach (var moduledefinition in _moduleDefinitions)
                                    {
                                        if (moduledefinition.IsEnabled && UserSecurity.IsAuthorized(PageState.User, PermissionNames.Utilize, moduledefinition.PermissionList))
                                        {
                                            if (moduledefinition.Runtimes == "" || moduledefinition.Runtimes.Contains(PageState.Runtime.ToString()))
                                            {
                                                <option value="@moduledefinition.ModuleDefinitionName">@moduledefinition.Name</option>
                                            }
                                        }
                                    }
                                </select>
                            }
                        }
                        else
                        {
                            <select class="form-select mt-1" value="@_pageId" @onchange="(e => PageChanged(e))">
                                <option value="-">&lt;@Localizer["Page.Select"]&gt;</option>
                                @foreach (Page p in _pages)
                                {
                                    <option value="@p.PageId">@p.Name</option>
                                }
                            </select>
                            <select class="form-select mt-1" @bind="@_moduleId">
                                <option value="-">&lt;@Localizer["Module.Select"]&gt;</option>
                                @foreach (Module module in _modules)
                                {
                                    <option value="@module.ModuleId">@module.Title</option>
                                }
                            </select>
                        }
                    </div>
                </div>
                <div class="row">
                    <div class="col text-center">
                        <label for="Title" class="control-label">@Localizer["Title"]</label>
                        <input type="text" name="Title" class="form-control" @bind="@_title" />
                    </div>
                </div>
                <div class="row">
                    <div class="col text-center">
                        <label for="Pane" class="control-label">@Localizer["Pane"]</label>
                        <select class="form-select" @bind="@_pane">
                            @foreach (string pane in PageState.Page.Panes)
                            {
                                <option value="@pane">@pane Pane</option>
                            }
                        </select>
                    </div>
                </div>
                <div class="row">
                    <div class="col text-center">
                        <label for="Insert" class="control-label">@Localizer["Location"]</label>
                        <select class="form-select" @bind="@_location">
                            <option value="@int.MinValue">@Localizer["LocationTop"]</option>
                            <option value="@int.MaxValue">@Localizer["LocationBottom"]</option>
                        </select>
                    </div>
                </div>
                <div class="row">
                    <div class="col text-center">
                        <label for="Container" class="control-label">@Localizer["Container"]</label>
                        <select class="form-select" @bind="@_containerType">
                            @if (_containers != null)
                            {
                                foreach (var container in _containers)
                                {
                                    <option value="@container.TypeName">@container.Name</option>
                                }
                            }
                        </select>
                    </div>
                </div>
                <div class="row">
                    <div class="col text-center">
                        <label for="visibility" class="control-label">@Localizer["Visibility"]</label>
                        <select class="form-select" @bind="@_visibility">
                            <option value="view">@Localizer["VisibilityView"]</option>
                            <option value="edit">@Localizer["VisibilityEdit"]</option>
                        </select>
                    </div>
                </div>
                <button type="button" class="btn btn-primary col-12 mt-4" @onclick="@AddModule">@Localizer["Page.Module.Add"]</button>
                @((MarkupString)_message)
                <hr class="app-rule" />
            }

            <div class="row d-flex">
                <div class="col">
                    <button type="button" data-bs-dismiss="offcanvas" class="btn btn-secondary col-12 mt-2" @onclick=@(async () => await LogoutUser())>@Localizer["Logout"]</button>
                </div>
            </div>
        </div>
    </div>
</div>

@code {
    [Parameter]
    public SiteState SiteState { get; set; }

    [Parameter]
    public PageState PageState { get; set; }

    [Parameter]
    public string ButtonClass { get; set; }

    [Parameter]
    public string ContainerClass { get; set; }

    [Parameter]
    public string HeaderClass { get; set; }

    [Parameter]
    public string BodyClass { get; set; }

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

    [Parameter]
    public string LanguageDropdownAlignment { get; set; }

    [Parameter]
    public bool CanViewAdminDashboard { get; set; }

    private bool _deleteConfirmation = false;
    private List<string> _categories = new List<string>();
    private List<ModuleDefinition> _allModuleDefinitions;
    private List<ModuleDefinition> _moduleDefinitions;
    private List<Page> _pages = new List<Page>();
    private List<Module> _modules = new List<Module>();
    private List<ThemeControl> _containers = new List<ThemeControl>();

    private string _category = "Common";
    private string _pane = "";
    protected string _pageId { get; private set; } = "-";
    protected string _moduleId { get; private set; } = "-";
    protected string _moduleType { get; private set; } = "new";
    protected string _moduleDefinitionName { get; private set; } = "-";

    protected string _title { get; private set; } = "";
    protected string _containerType { get; private set; } = "";
    protected int _location { get; private set; } = int.MaxValue;
    protected string _visibility { get; private set; } = "view";
    protected string _message { get; private set; } = "";

    private string settingCategory = "CP-category";
    private string settingPane = "CP-pane";

    protected override async Task OnParametersSetAsync()
    {
        // repopulate the SiteState service based on the values passed in the SiteState parameter (this is how state is marshalled across the render mode boundary)
        ComponentSiteState.Hydrate(SiteState);

        if (UserSecurity.IsAuthorized(PageState.User, PermissionNames.Edit, PageState.Page.PermissionList))
        {
            LoadSettingsAsync();
            _containers = ThemeService.GetContainerControls(PageState.Site.Themes, PageState.Page.ThemeType);
            _containerType = PageState.Site.DefaultContainerType;
            _allModuleDefinitions = await ModuleDefinitionService.GetModuleDefinitionsAsync(PageState.Page.SiteId);
            _moduleDefinitions = _allModuleDefinitions.Where(item => item.Categories.Contains(_category)).ToList();
            _categories = _allModuleDefinitions.SelectMany(m => m.Categories.Split(',', StringSplitOptions.RemoveEmptyEntries)).Distinct().Where(item => item != "Headless").ToList();
        }
    }

    private void CategoryChanged(ChangeEventArgs e)
    {
        _category = (string)e.Value;
        _moduleDefinitions = _allModuleDefinitions.Where(item => item.Categories.Contains(_category)).ToList();
        _moduleDefinitionName = "-";
        _message = "";
    }

    private void ModuleChanged(ChangeEventArgs e)
    {
        _moduleDefinitionName = (string)e.Value;
        if (_moduleDefinitionName != "-")
        {
            var moduleDefinition = _moduleDefinitions.FirstOrDefault(item => item.ModuleDefinitionName == _moduleDefinitionName);
            _message = "<div class=\"alert alert-info mt-2 text-center\" role=\"alert\">" + moduleDefinition.Description + "</div>";
        }
        else
        {
            _message = "";
        }
        StateHasChanged();
    }

    private async Task ModuleTypeChanged(ChangeEventArgs e)
    {
        _moduleType = (string)e.Value;
        if (_moduleType != "new")
        {
            _pages = await PageService.GetPagesAsync(PageState.Page.SiteId);
        }
        _pageId = "-";
        _moduleId = "-";
    }

    private async Task PageChanged(ChangeEventArgs e)
    {
        _pageId = (string)e.Value;
        if (_pageId != "-")
        {
            _modules = await ModuleService.GetModulesAsync(PageState.Page.SiteId);
            _modules = _modules.Where(module => module.PageId == int.Parse(_pageId) && module.IsDeleted == false &&
                UserSecurity.IsAuthorized(PageState.User, PermissionNames.View, module.PermissionList) &&
                (_moduleType == "add" || module.ModuleDefinition.IsPortable))
                .ToList();
        }
        _moduleId = "-";
        StateHasChanged();
    }

    private async Task AddModule()
    {
        if (UserSecurity.IsAuthorized(PageState.User, PermissionNames.Edit, PageState.Page.PermissionList))
        {
            if ((_moduleType == "new" && _moduleDefinitionName != "-") || (_moduleType != "new" && _moduleId != "-"))
            {
                var newModuleId = _moduleId != "-" ? int.Parse(_moduleId) : 0;
                if (_moduleType == "new")
                {
                    Module module = new Module();
                    module.SiteId = PageState.Page.SiteId;
                    module.PageId = PageState.Page.PageId;
                    module.ModuleDefinitionName = _moduleDefinitionName;
                    module.AllPages = false;
                    module.PermissionList = GenerateDefaultPermissions(module.SiteId);

                    module = await ModuleService.AddModuleAsync(module);
                    newModuleId = module.ModuleId;
                }
                else if (_moduleType == "copy")
                {
                    var module = await ModuleService.GetModuleAsync(int.Parse(_moduleId));
                    module.ModuleId = 0;
                    module.SiteId = PageState.Page.SiteId;
                    module.PageId = PageState.Page.PageId;
                    module.AllPages = false;
                    module.PermissionList = GenerateDefaultPermissions(module.SiteId);

                    module = await ModuleService.AddModuleAsync(module);
                    var moduleContent = await ModuleService.ExportModuleAsync(int.Parse(_moduleId), PageState.Page.PageId);
                    if (!string.IsNullOrEmpty(moduleContent))
                    {
                        await ModuleService.ImportModuleAsync(module.ModuleId, PageState.Page.PageId, moduleContent);
                    }

                    newModuleId = module.ModuleId;
                }

                var pageModule = new PageModule
                    {
                        PageId = PageState.Page.PageId,
                        ModuleId = newModuleId,
                        Title = _title
                    };
                if (string.IsNullOrEmpty(pageModule.Title))
                {
                    if (_moduleType == "new")
                    {
                        pageModule.Title = _moduleDefinitions.FirstOrDefault(item => item.ModuleDefinitionName == _moduleDefinitionName)?.Name;
                    }
                    else
                    {
                        pageModule.Title = _modules.FirstOrDefault(item => item.ModuleId == int.Parse(_moduleId))?.Title;
                    }
                }

                pageModule.Pane = _pane;
                pageModule.Order = _location;
                pageModule.ContainerType = _containerType;

                if (pageModule.ContainerType == PageState.Site.DefaultContainerType)
                {
                    pageModule.ContainerType = "";
                }

                await PageModuleService.AddPageModuleAsync(pageModule);
                await PageModuleService.UpdatePageModuleOrderAsync(pageModule.PageId, pageModule.Pane);
                await UpdateSettingsAsync();

                if (PageState.RenderMode == RenderModes.Interactive)
                {
                    _message = $"<div class=\"alert alert-success mt-2 text-center\" role=\"alert\">{Localizer["Success.Page.ModuleAdd"]}</div>";
                    _title = "";
                    NavigationManager.NavigateTo(Utilities.NavigateUrl(PageState.Alias.Path, PageState.Page.Path, ""));
                }
                else // reload page in static rendering
                {
                    NavigationManager.NavigateTo(Utilities.NavigateUrl(PageState.Alias.Path, PageState.Page.Path, ""), true);
                }
            }
            else
            {
                _message = $"<div class=\"alert alert-warning mt-2 text-center\" role=\"alert\">{Localizer["Message.Require.ModuleSelect"]}</div>";
            }
        }
        else
        {
            _message = $"<div class=\"alert alert-error mt-2 text-center\" role=\"alert\">{Localizer["Error.Authorize.No"]}</div>";
        }
    }

    private List<Permission> GenerateDefaultPermissions(int siteId)
    {
        var permissions = new List<Permission>();
        if (_visibility == "view")
        {
            // set module view permissions to page view permissions
            permissions = SetPermissions(permissions, siteId, PermissionNames.View, PermissionNames.View);
        }
        else
        {
            // set module view permissions to page edit permissions
            permissions = SetPermissions(permissions, siteId, PermissionNames.View, PermissionNames.Edit);
        }
        // set module edit permissions to page edit permissions
        permissions = SetPermissions(permissions, siteId, PermissionNames.Edit, PermissionNames.Edit);

        return permissions;
    }

    private List<Permission> SetPermissions(List<Permission> permissions, int siteId, string modulePermission, string pagePermission)
    {
        foreach (var permission in PageState.Page.PermissionList.Where(item => item.PermissionName == pagePermission))
        {
            permissions.Add(new Permission { SiteId = siteId, EntityName = EntityNames.Module, PermissionName = modulePermission, RoleName = permission.RoleName, UserId = permission.UserId, IsAuthorized = permission.IsAuthorized });
        }
        return permissions;
    }

    private void Navigate(string location)
    {
        int moduleId;
        switch (location)
        {
            case "Admin":
                // get admin dashboard moduleid
                moduleId = int.Parse(PageState.Site.Settings[Constants.AdminDashboardModule]);
                NavigationManager.NavigateTo(Utilities.EditUrl(PageState.Alias.Path, "admin", moduleId, "Index", "returnurl=" + WebUtility.UrlEncode(PageState.Route.PathAndQuery)));
                break;
            case "Add":
            case "Edit":
                // get page management moduleid
                moduleId = int.Parse(PageState.Site.Settings[Constants.PageManagementModule]);
                NavigationManager.NavigateTo(Utilities.EditUrl(PageState.Alias.Path, "admin/pages", moduleId, location, $"id={PageState.Page.PageId}&returnurl={WebUtility.UrlEncode(PageState.Route.PathAndQuery)}"));
                break;
        }
    }

    private async void Publish(string action)
    {
        if (UserSecurity.IsAuthorized(PageState.User, PermissionNames.Edit, PageState.Page.PermissionList))
        {
            var permissions = PageState.Page.PermissionList;
            switch (action)
            {
                case "publish":
                    if (!permissions.Any(item => item.PermissionName == PermissionNames.View && item.RoleName == RoleNames.Everyone))
                    {
                        permissions.Add(new Permission(PageState.Page.SiteId, EntityNames.Page, PageState.Page.PageId, PermissionNames.View, RoleNames.Everyone, null, true));
                    }
                    if (!permissions.Any(item => item.PermissionName == PermissionNames.View && item.RoleName == RoleNames.Registered))
                    {
                        permissions.Add(new Permission(PageState.Page.SiteId, EntityNames.Page, PageState.Page.PageId, PermissionNames.View, RoleNames.Registered, null, true));
                    }
                    break;
                case "unpublish":
                    if (permissions.Any(item => item.PermissionName == PermissionNames.View && item.RoleName == RoleNames.Everyone))
                    {
                        permissions.RemoveAll(item => item.PermissionName == PermissionNames.View && item.RoleName == RoleNames.Everyone);
                    }

                    if (permissions.Any(item => item.PermissionName == PermissionNames.View && item.RoleName == RoleNames.Registered))
                    {
                        permissions.RemoveAll(item => item.PermissionName == PermissionNames.View && item.RoleName == RoleNames.Registered);
                    }
                    break;
            }
            PageState.Page.PermissionList = permissions;
            await PageService.UpdatePageAsync(PageState.Page);
            NavigationManager.NavigateTo(Utilities.NavigateUrl(PageState.Alias.Path, PageState.Page.Path, "refresh"));
        }
    }

    private void ConfirmDelete()
    {
        _deleteConfirmation = !_deleteConfirmation;
        StateHasChanged();
    }

    private async Task DeletePage()
    {
        ConfirmDelete();

        var page = PageState.Page;
        try
        {
            if (page.UserId == null)
            {
                page.IsDeleted = true;
                await PageService.UpdatePageAsync(page);
                await logger.Log(page.PageId, null, PageState.User?.UserId, GetType().AssemblyQualifiedName, "ControlPanel", LogFunction.Delete, LogLevel.Information, null, "Page Deleted {Page}", page);
                NavigationManager.NavigateTo(Utilities.NavigateUrl(PageState.Alias.Path, "", ""));
            }
            else // personalized page
            {
                await PageService.DeletePageAsync(page.PageId);
                await logger.Log(page.PageId, null, PageState.User?.UserId, GetType().AssemblyQualifiedName, "ControlPanel", LogFunction.Delete, LogLevel.Information, null, "Page Deleted {Page}", page);
                NavigationManager.NavigateTo(Utilities.NavigateUrl(PageState.Alias.Path, PageState.Page.Path, ""));
            }
        }
        catch (Exception ex)
        {
            await logger.Log(page.PageId, null, PageState.User?.UserId, GetType().AssemblyQualifiedName, "ControlPanel", LogFunction.Delete, LogLevel.Information, ex, "Page Deleted {Page} {Error}", page, ex.Message);
        }
    }

    // the following code is duplicated from LoginBase
    private async Task LogoutUser()
    {
        await LoggingService.Log(PageState.Alias, PageState.Page.PageId, null, PageState.User?.UserId, GetType().AssemblyQualifiedName, "Logout", LogFunction.Security, LogLevel.Information, null, "User Logout For Username {Username}", PageState.User?.Username);

        Route route = new Route(PageState.Uri.AbsoluteUri, PageState.Alias.Path);
        var url = route.PathAndQuery;

        // verify if anonymous users can access page
        if (!UserSecurity.IsAuthorized(null, PermissionNames.View, PageState.Page.PermissionList))
        {
            url = PageState.Alias.Path;
        }

        if (PageState.Runtime == Shared.Runtime.Hybrid)
        {
            if (PageState.User != null)
            {
                // hybrid apps utilize an interactive logout
                await UserService.LogoutUserAsync(PageState.User);
                var authstateprovider = (IdentityAuthenticationStateProvider)ServiceProvider.GetService(typeof(IdentityAuthenticationStateProvider));
                authstateprovider.NotifyAuthenticationChanged();
                NavigationManager.NavigateTo(url, true);
            }
        }
        else
        {
            // post to the Logout page to complete the logout process
            var fields = new { __RequestVerificationToken = SiteState.AntiForgeryToken, returnurl = url, everywhere = bool.Parse(SettingService.GetSetting(PageState.Site.Settings, "LoginOptions:LogoutEverywhere", "false")) };
            var interop = new Interop(jsRuntime);
            await interop.SubmitForm(Utilities.TenantUrl(PageState.Alias, "/pages/logout/"), fields);
        }
    }

    private void LoadSettingsAsync()
    {
        _category = SettingService.GetSetting(PageState.User?.Settings, settingCategory, "Common");
        var pane = SettingService.GetSetting(PageState.User?.Settings, settingPane, "");
        if (PageState.Page.Panes.Contains(pane))
        {
            _pane = pane;
        }
        else
        {
            if (PageState.Page.Panes.FindIndex(item => item.Equals(PaneNames.Default, StringComparison.OrdinalIgnoreCase)) != -1)
            {
                _pane = PaneNames.Default;
            }
            else
            {
                _pane = PaneNames.Admin;
            }
        }
    }

    private async Task UpdateSettingsAsync()
    {
        if (PageState.User != null)
        {
            Dictionary<string, string> settings = await SettingService.GetUserSettingsAsync(PageState.User.UserId);
            settings = SettingService.SetSetting(settings, settingCategory, _category);
            settings = SettingService.SetSetting(settings, settingPane, _pane);
            await SettingService.UpdateUserSettingsAsync(settings, PageState.User.UserId);
        }
    }

    private void ClearMessage()
    {
        _message = "";
    }
}