<?php
class WPJAM_Admin extends WPJAM_Args{
	private function __construct(){
		$this->args	= ['prefix'=>is_network_admin() ? 'network_' : (is_user_admin() ? 'user_' : '')];

		add_action('wpjam_admin_init', ['WPJAM_Notice', 'on_admin_init']);

		add_action(wp_doing_ajax() ? 'admin_init' : $this->prefix.'admin_menu', [$this, 'init'], 9);

		wp_doing_ajax() || add_filter('wpjam_html', fn($html)=> str_replace(
			['dashicons-before dashicons-ri-', '/wp-admin/page='],
			['ri-', '/wp-admin/admin.php?page='],
			$html
		));
	}

	public function __invoke($key, ...$args){
		if(!$key){
			return $this;
		}

		if(method_exists($this, $key)){
			return $this->$key(...$args);
		}

		$value	= $this->get_arg($key);

		if(!$args){
			return $value ?? $this->get_arg('vars['.$key.']');
		}

		if(is_object($value) && !is_object($args[0])){
			return count($args) >= 2 ? ($value->{$args[0]} = $args[1]) : $value->{$args[0]};
		}

		if(in_array($key, ['script', 'style'])){
			$key	.= '[]';
			$value	= implode("\n", (array)$args[0]);
		}else{
			$value	= $key == 'query_data' ? array_merge($value ?: [], wpjam_map($args[0], fn($v)=> is_array($v)
				? wp_die('query_data 不能为数组')
				: (is_null($v) ? $v : sanitize_textarea_field($v))
			)) : $args[0];
		}

		$this->process_arg($key, fn()=> $value);

		return $value;
	}

	public function url($path=''){
		return wpjam_call($this->prefix.'admin_url', $path);
	}

	public function error($msg='', $type=''){
		if($msg === ''){
			return wpjam_map($this->error ?: [], fn($e)=> wpjam_echo(wpjam_tag('div', ['is-dismissible', 'notice', 'notice-'.$e[0]], ['p', [], $e[1]])));
		}

		if($args = is_wp_error($msg) ? ['error', $msg->get_error_message()] : ($msg ? [$type ?: 'success', $msg] : '')){
			$this->update_arg('error[]', $args);
		}
	}

	public function enqueue(){
		$ver	= get_plugin_data(WPJAM_BASIC_PLUGIN_FILE)['Version'];
		$static	= wpjam_url(dirname(__DIR__), 'relative').'/static';

		wp_enqueue_media(wpjam_pick($this, ['post_id']));	// 引入 jquery-ui-sortable
		wp_enqueue_script('wpjam-script', $static.'/script.js', ['wp-color-picker', 'jquery-ui-autocomplete', ...(wp_is_mobile() ? ['jquery-touch-punch'] : [])], $ver);

		wp_localize_script('wpjam-script', 'wpjam_page_setting', array_map('maybe_closure', $this->vars)+[
			'upload_files'	=> current_user_can('upload_files'),
			'admin_url'		=> $GLOBALS['current_admin_url'],
			'loading'		=> includes_url('js/thickbox/loadingAnimation.gif'),
		]+$this->pick(['query_data', 'query_url', 'block']));

		$this->block && wp_enqueue_script('wpjam-blocks', $static.'/blocks.js', ['wp-plugins', 'wp-editor', 'wp-element', 'wp-components', 'wp-data'], '1.0', true);

		wp_enqueue_style('wpjam-style', $static.'/style.css', ['wp-color-picker', 'editor-buttons'], $ver);

		$this->style	&& wp_add_inline_style('wpjam-style', "\n".implode("\n\n", array_filter($this->style)));
		$this->script	&& wp_add_inline_script('wpjam-script', "jQuery(function($){".preg_replace('/^/m', "\t", "\n".implode("\n\n", $this->script))."\n});");
	}

	public function data_type(...$args){
		if(!$args){
			return $this->data_type;
		}

		if(is_scalar($args[0])){
			return $this->data_type = $args[0];
		}

		$type	= wpjam_get($args[0], 'data_type');

		return $type ? (['data_type'=>$type]+(in_array($type, ['post_type', 'taxonomy']) ? [$type => wpjam_get($args[0], $type, '')] : [])) : [];
	}

	public function dashboard($action, ...$args){
		if($action == 'add_widget'){
			return $this->update_arg('widgets['.array_shift($args).']', ...$args);
		}

		if(is_array($action)){
			$args	= [$action];
			$action	= '';
		}

		if($args){
			$this->dashboard = new WPJAM_Args(...$args);
		}

		$object	= $this->dashboard;

		if(!$action || !$object){
			return $object;
		}

		$name	= $object->name;

		if($action == 'load'){
			$name != 'dashboard' && require_once ABSPATH.'wp-admin/includes/dashboard.php';

			wp_enqueue_script('dashboard');

			foreach(array_merge(maybe_callback($object->widgets, $name) ?: [], array_filter($this->widgets ?: [], fn($v)=> ($v['dashboard'] ?? 'dashboard') == $name)) as $id => $w){
				add_meta_box(
					$w['id'] ?? $id,
					$w['title'],
					$w['callback'] ?? wpjam_get_filter_name($w['id'] ?? $id, 'dashboard_widget_callback'),
					get_current_screen(),
					$w['context'] ?? 'normal',
					$w['priority'] ?? 'core',
					$w['args'] ?? []
				);
			}
		}elseif($action == 'render'){
			return wpjam_tag('div', ['id'=>'dashboard-widgets-wrap'], wpjam_ob('wp_dashboard'))->before(($panel = wpjam_ob($object->welcome_panel, $name)) ? wpjam_tag('div', ['id'=>'welcome-panel', 'class'=>'welcome-panel wpjam-welcome-panel'], $panel) : '');
		}
	}

	public function load(...$args){
		if(count($args) >= 2){
			$map	= ['builtin_page'=>'base', 'plugin_page'=>'plugin_page'];
			$type	= $args[0] ?? array_find_key($map, fn($v)=> isset($args[1][$v]));

			return isset($map[$type]) && $this->update_arg($type.'_load[]', $args[1]);
		}

		if($screen = array_shift($args)){
			$this->screen	= $screen;
			$this->vars		= ($this->vars ?? [])+['screen_id'=>$screen->id]+array_filter(wpjam_pick($screen, ['post_type', 'taxonomy']));

			$screen->base == 'post' && ($this->post_id = (int)($_GET['post'] ?? ($_POST['post_ID'] ?? 0)));
		}

		if($this->plugin_page){
			$type	= 'plugin_page';
			$object	= $this->current_tab ?: $this->plugin_page;
			$args	= [$object->menu_slug, $this->current_tab ? $object->tab_slug : ''];

			$this->vars	+= ['plugin_page'=>$args[0]]+($args[1] ? ['current_tab'=>$args[1]] : []);

			if(!$args[1] && $screen && str_contains($screen->id, '%')){
				$screen->id	= preg_replace_callback('/^(.*?)(_page_.*)/', fn($m)=> (array_search($m[1], $GLOBALS['admin_page_hooks']) ?: $m[1]).$m[2], $screen->id);
			}
		}else{
			if($screen->base == 'customize' || !empty($GLOBALS['plugin_page'])){
				return;
			}

			$type	= 'builtin_page';
			$args	= [$screen];
			$page	= $this->$type = ($_POST[$type] ?? '') ?: $GLOBALS['pagenow'];
			$url	= add_query_arg(array_intersect_key($_REQUEST, wpjam_pick($this->vars, ['taxonomy', 'post_type'])), $this->url($page));

			$GLOBALS['current_admin_url']	= $url;

			$this->vars	+= [$type=>$page];

			if(in_array($screen->base, ['edit', 'upload', 'post'])){
				if(!($this->type_object = wpjam_get_post_type_object($GLOBALS['typenow']))){
					return;
				}
			}elseif(in_array($screen->base, ['term', 'edit-tags'])){
				if(!($this->tax_object = wpjam_get_taxonomy($GLOBALS['taxnow']))){
					return;
				}
			}
		}

		do_action('wpjam_'.$type.'_load', ...$args);	// 兼容

		foreach(wpjam_sort(array_filter($this->get_arg($type.'_load[]'), function($load){
			if($this->plugin_page){
				$page	= $this->plugin_page->name;
				$tab	= ($tab = $this->current_tab) ? $tab->name : '';
				$pv		= $load['plugin_page'] ?? '';
				$tv		= $load['current_tab'] ?? '';

				if($pv && is_callable($pv)){
					return $pv($page, $tab);
				}

				if($pv && !wpjam_compare($page, $pv)){
					return false;
				}

				return $tv ? ($tab && wpjam_compare($tab, $tv)) : !$tab;
			}else{
				if(($sv = $load['screen'] ?? '') && is_callable($sv) && !$sv($this->screen)){
					return false;
				}

				return array_all(['base', 'post_type', 'taxonomy'], fn($k) => empty($load[$k]) || wpjam_compare($this->screen->$k, $load[$k]));
			}
		}), 'order', 'desc', 10) as $load){
			wpjam_map((array)($load['page_file'] ?? []), fn($f)=> is_file($f) && include $f);

			if($cb = $load['callback'] ?? ''){
				wpjam_call($cb, ...$args);
			}elseif($model = $load['model'] ?? ''){
				if($m = array_find(['load', $type.'_load'], fn($m)=> method_exists($model, $m))){
					wpjam_call_method($model, $m, ...$args);
				}
			}
		}

		wpjam_trap($this->plugin_page ? [$object, 'load'] : [$this, 'builtin'], $screen, fn($e)=> $this->error($e));

		add_action('admin_enqueue_scripts',	[$this, 'enqueue'], 9);
		add_action('all_admin_notices',		[$this, 'error'], 9);
	}

	public function builtin(){
		$base	= $this->screen->base;
		$type	= $GLOBALS['typenow'];
		$tax	= $GLOBALS['taxnow'];

		if($base == 'edit'
			|| ($base == 'upload' && (($_GET['mode'] ?? '') ?: get_user_option('media_library_mode', get_current_user_id())) === 'list')
		){
			$object	= $this->type_object;

			WPJAM_Builtin_List_Table::load(wpjam_pick($object, ['title', 'model', 'hierarchical'])+[
				'capability'	=> fn($id)=> $id ? 'edit_post' : $object->cap->edit_posts,
				'primary_key'	=> 'ID',
				'singular'		=> 'post',
				'data_type'		=> 'post_type',
				'meta_type'		=> 'post',
				'post_type'		=> $type,
			]);
		}elseif($base == 'post'){
			$object	= $this->type_object;
			$size	= $object->thumbnail_size;
			$label	= $object->_jam ? $object->labels->name : '';

			$size	&& wpjam_hook('admin_post_thumbnail_html', '.', wpautop('尺寸：'.$size));
			$label	&& wpjam_hook('post_updated_messages', '+', fn($ms)=> [$type=> array_map(fn($m)=> str_replace('文章', $label, $m), $ms['post'])]);

			$options	= wpjam_get_post_options($type, ['list_table'=>false]);

			if(use_block_editor_for_post_type($type) && post_type_supports($type, 'custom-fields')){
				foreach($options as $name => $option){
					if(($option->modal || $option->context === 'side') && wpjam_is_assoc_array($option->fields)){
						$fields	= wpjam_fields($option->fields)->to_block();
						$fields	&& $this->update_arg('block[panels][]', wpjam_pick($option, ['title', 'modal'])+compact('name', 'fields'));

						unset($options[$name]);
					}
				}
			}

			if($options){
				$this->meta_options	= $options;

				add_action('add_meta_boxes',		[$this, 'meta_options'], 10, 2);
				add_action('wp_after_insert_post',	[$this, 'meta_options'], 999);
			}
		}elseif(in_array($base, ['term', 'edit-tags'])){
			$object	= $this->tax_object;
			$label	= $object->_jam ? $object->labels->name : '';

			$label	&& wpjam_hook('term_updated_messages', '+', fn($ms)=> [$tax=> array_map(fn($m)=> str_replace(['项目', 'Item'], [$label, ucfirst($label)], $m), $ms['_item'])]);

			$this->meta_options	= wpjam_get_term_options($tax, ['list_table'=>false]);

			add_action($tax.'_'.($base == 'term' ? 'edit' : 'add').'_form_fields', [$this, 'meta_options'], 10, 2);

			if($base == 'edit-tags'){
				wpjam_map(['slug', 'description'], fn($sup)=> $object->supports($sup) || $this->update_arg('removed_columns[]', $sup));

				$this->update_arg('removed_actions[]', 'inline hide-if-no-js');

				wpjam_hook('pre_insert_term', 'tap', [$this, 'meta_options'], 10, 2);

				add_action((wp_doing_ajax() ? 'created' : 'edited').'_term', [$this, 'meta_options']);

				WPJAM_Builtin_List_Table::load(wpjam_pick($object, ['title','model', 'hierarchical', 'levels', 'sortable'])+[
					'capability'	=> $object->cap->edit_terms,
					'primary_key'	=> 'term_id',
					'singular'		=> 'tag',
					'data_type'		=> 'taxonomy',
					'meta_type'		=> 'term',
					'taxonomy'		=> $tax,
					'post_type'		=> $type,
				]);
			}
		}elseif($base == 'users'){
			WPJAM_Builtin_List_Table::load([
				'title'			=> '用户',
				'model'			=> 'WPJAM_User',
				'capability'	=> 'edit_user',
				'primary_key'	=> 'ID',
				'singular'		=> 'user',
				'data_type'		=> 'user',
				'meta_type'		=> 'user',
			]);
		}
	}

	public function meta_options(...$args){
		$hook		= current_filter();
		$base		= $this->screen->base;
		$options	= $this->meta_options;

		if($base == 'post'){
			if($hook === 'add_meta_boxes'){
				$type	= $args[0];
				$pid	= $args[1]->ID;
				$id		= $this->screen->action == 'add' ? false : $pid;
			}else{
				$action	= 'callback';
				$pid	= $args[0];
				$type	= get_post_type($pid);

				if($_SERVER['REQUEST_METHOD'] != 'POST' || get_post_status($pid) == 'auto-draft' || (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) || (($_POST['wp-preview'] ?? '') == 'dopreview')){
					return;
				}
			}
		}else{
			if($hook == 'pre_insert_term'){
				$action	= 'validate';
				$tax	= $args[0];
				$args	= [];
			}elseif(str_ends_with($hook, '_form_fields')){
				$action	= 'render';
				$i		= str_contains($hook, 'edit') ? 1 : 0;
				$tax	= $args[$i];
				$args	= [($i ? $args[0]->term_id : false), ['fields_type'=>($i ? 'tr' : 'div'), 'wrap_class'=>'form-field']];
			}else{
				$action	= 'callback';
				$tax	= get_term_field('taxonomy', $args[0]);
			}

			$options	= wpjam_filter($options, ['action'=>['value'=>str_contains($hook, 'edit') ? 'edit' : 'add', 'if_null'=>true]]);
		}

		foreach($options as $option){
			if($base == 'post'){
				$context	= $option->context ?: 'normal';

				if(!($cb = $option->meta_box_cb)){
					if(!($option->fields = $option->get_fields($pid))){
						continue;
					}

					$cb	= fn()=> $option->render($id, ['fields_type'=>($context === 'side' ? 'list' : 'table')]);
				}
			}

			if($hook === 'add_meta_boxes'){
				add_meta_box($option->name, $option->title, $cb, $type, $context, $option->priority);
			}else{
				wpjam_trap([$option, $action], ...[...$args, 'die']);
			}
		}
	}

	public function init(){
		if($GLOBALS['pagenow'] == 'admin-post.php'){
			return;
		}

		if(wp_doing_ajax()){
			wpjam_ajax('wpjam-page-action', [
				'admin'			=> true,
				'nonce_action'	=> fn($data)=> $data['action_type'] == 'form' ? '' : ($data['page_action'] ?? ''),
				'callback'		=> fn($data)=> ($object	= wpjam_get_page_action($data['page_action'] ?? '')) ? $object($data['action_type']) : wpjam_page_action_compat($data),
			]);

			wpjam_ajax('wpjam-query', [
				'admin'			=> true,
				'fields'		=> ['data_type'=> ['required'=>true]],
				'callback'		=> fn($data)=> wpjam_query('data_type', $data),
				'nonce_action'	=> fn($data)=> wpjam_get_data_type($data['data_type'], $data['query_args'] ?? [])->nonce_action($data['query_args'] ?? []),
			]);

			wpjam_ajax('wpjam-upload', [
				'admin'			=> true,
				'allow'			=> fn()=> current_user_can('upload_files'), 
				'nonce_action'	=> fn($data)=> 'upload-'.$data['name'].'-'.$data['accept'],
				'callback'		=> fn($data)=> wpjam_upload($data['filename'] ?? $data['name'], $data)
			]);

			$screen	= $_POST['screen_id'] ?? ($_POST['screen'] ?? '');

			if(!$screen){
				return;
			}

			$page	= $GLOBALS['plugin_page'] = $_POST['plugin_page'] ?? '';
			$part	= $page ? wpjam_at($screen, '_page_'.$page, 1) : $screen;
			$type	= array_find(['network', 'user'], fn($v)=> str_ends_with($part, '-'.$v));
			$const	= $type ? 'WP_'.strtoupper($type).'_ADMIN' : '';

			$const && !defined($const) && define($const, true);

			$screen == 'upload' && ([$GLOBALS['hook_suffix'], $screen]	= [$screen, '']);
		}

		do_action('wpjam_admin_init');

		add_action('current_screen', [$this, 'load'], 9);

		$menu	= new WPJAM_Plugin_Page();
		$pages	= apply_filters('wpjam_pages', $this->pages ?: []);

		if(wp_doing_ajax()){
			$page && ($slug = array_find_key($pages, fn($v, $k)=> $page == $k || isset($v['subs'][$page]))) && $menu->parse($pages[$slug], $page, $slug);

			set_current_screen($screen);
		}else{
			wpjam_map($pages, [$menu, 'parse']);
		}
	}

	public static function get_instance(){
		static $object;
		return $object ??= new self();
	}
}

class WPJAM_Plugin_Page extends WPJAM_Args{
	private $builtins = [];

	public function __get($key){
		$value	= parent::__get($key);

		if($key == 'name'){
			return $this->tab_slug ?: $this->menu_slug;
		}elseif($key == 'type'){
			return ($value ??= $this->function) == 'list' ? 'list_table' : (in_array($value, ['option', 'list_table', 'form', 'dashboard', 'tab']) ? $value : '');
		}

		return $value;
	}

	public function get_sub($slug){
		return $this->pull('subs['.$slug.']') ?: array_filter(['menu_title'=>$this->sub_title])+wpjam_except($this->args, ['position', 'subs', 'page_title']);
	}

	public function parse($args, $slug, $parent=''){
		if(wp_doing_ajax()){
			$this->args	= $args;

			[$args, $parent]	= $this->subs ? [$this->get_sub($slug), $parent] : [$args, ''];
		}elseif(!$this->builtins){
			$map	= ['appearance'=>'themes', 'settings'=>'options', 'profile'=>'users'];

			$this->builtins	= wpjam_reduce($GLOBALS['admin_page_hooks'], fn($c, $v, $k)=> $c+[(str_starts_with($k, 'edit.php?') && $v != 'pages') ? wpjam_get_post_type_setting($v, 'plural') : $v => $k]+(isset($map[$v]) ? [$map[$v]=>$k] : []), []);
		}

		$this->args	= $args+['menu_slug'=>$slug];
		$slug		= $this->menu_slug;
		$builtin	= $parent ? '' : ($this->builtins[$slug] ?? '');

		if(!$builtin){
			$path	= str_contains($parent, '.php') ? $parent : 'admin.php';

			if(!$this->menu_title || !$this->is_available(['network'=>$this->pull('network', ($path == 'admin.php'))])){
				return;
			}

			$this->page_title	??= $this->menu_title;
			$this->capability	??= 'manage_options';

			if(!str_contains($slug, '.php')){
				$this->admin_url = add_query_arg(['page'=>$slug], $path);

				if(!$this->query_data()){
					return;
				}

				$cb	= '__return_true';
			}else{
				str_starts_with($slug, $GLOBALS['pagenow']) && array_all(wp_parse_args(parse_url($slug, PHP_URL_QUERY)), fn($v, $k)=> $v == ($_GET[$k] ?? '')) && wpjam_hook('parent_file', $parent ?: $slug);
			}

			$object	= ($this->is_current() && ($parent || (!$parent && !$this->subs))) ? wpjam_admin('plugin_page', wp_clone($this)) : null;
			$args	= [$this->page_title, $this->menu_title, $this->capability, $slug, ($object ? [$object, 'render'] : ($cb ?? null)), $this->position];
			$icon	= $parent ? '' : ($this->icon ? wpjam_prefix($this->icon, 'dashicons-') : '');
			$hook	= $parent ? add_submenu_page($parent, ...$args) : add_menu_page(...wpjam_add_at($args, -1, $icon));

			$object && wpjam_admin('page_hook', $hook);
		}

		if(!$parent && ($builtin || $this->subs)){
			$subs	= ($builtin ? [] : [$slug=>$this->get_sub($slug)])+wpjam_sort($this->subs, fn($v)=> ($v['order'] ?? 10) - ($v['position'] ?? 10)*1000);

			wpjam_map($subs, fn($sub, $s)=> $this->parse($sub, $s, $builtin ?: $slug));
		}
	}

	private function is_available($args){
		return array_all([
			'network'		=> fn($v)=> is_network_admin() ? (bool)$v : $v !== 'only',
			'capability'	=> fn($v)=> current_user_can($v),
			'plugin_page'	=> fn($v)=> $v == $this->menu_slug
		], fn($cb, $k)=> isset($args[$k]) ? $cb($args[$k]) : true);
	}

	public function is_current(){
		return ($this->tab_slug ? $GLOBALS['current_tab'] : $GLOBALS['plugin_page']) == $this->name;
	}

	public function query_data(){
		if($this->query_args){
			$query_data	= $this->get_param($this->query_args);

			if($null_data = array_filter($query_data, fn($v)=> is_null($v))){
				return $this->is_current() ? wp_die('「'.implode('」,「', array_keys($null_data)).'」参数无法获取') : false;
			}

			wpjam_admin('query_url[]', [$this->admin_url, ($this->admin_url = add_query_arg($query_data, $this->admin_url))]);

			$this->is_current() && wpjam_admin('query_data', $query_data);
		}

		return true;
	}

	private function throw($title){
		wpjam_throw('error', $title);
	}

	private function include(){
		$cb	= $this->pull('load_callback');
		$cb && !is_callable($cb) && $this->include();	// load_callback 优先文件加载，如不存在，尝试先加载文件
		$cb && wpjam_call($cb, $this->name);

		wpjam_map((array)$this->pull(($this->tab_slug ? 'tab' : 'page').'_file'), fn($f)=> include($f));
	}

	private function defaults($defaults=null){
		($defaults	??= $this->defaults) && is_array($defaults) && wpjam_default($defaults);
	}

	public function load(){
		$this->defaults();
		$this->include();

		do_action('wpjam_plugin_page', $this, ($type = $this->type));

		if($type && $type != 'tab'){
			$name	= $this->{$type.'_name'} ?: $this->menu_slug;
			$object	= $this->page_object($type, $name, 'preprocess');
		}

		if($this->data_type){
			$data_type	= wpjam_admin('data_type', $this->data_type);
			$dt_object	= wpjam_get_data_type($data_type, $this->args);

			$dt_object && $dt_object->meta_type && wpjam_admin('meta_type', $dt_object->meta_type);

			in_array($data_type, ['post_type', 'taxonomy']) && $this->$data_type && !wpjam_admin('screen', $data_type) && wpjam_admin('screen', $data_type, $this->$data_type);
		}

		$this->actions	&& wpjam_map($this->actions, 'wpjam_register_page_action', 'kv');
		$this->chart	&& wpjam_chart(is_array($this->chart) ? $this->chart : []);
		$this->editor	&& add_action('admin_footer', 'wp_enqueue_editor');

		$GLOBALS['current_admin_url']	= wpjam_admin('url', $this->admin_url);

		if($type == 'tab'){
			$GLOBALS['current_tab']	= wp_doing_ajax() ? ($_POST['current_tab'] ?? null) : ($_GET['tab'] ?? null);

			$tabs	= $this->get_arg('tabs', [], 'callback');
			$tabs	= wpjam_reduce(wpjam_admin('tabs[]'), fn($c, $v, $k)=> $this->is_available($v) ? $c+[$v['tab_slug']=>$v] : $c, $tabs);
			$tabs	= wpjam_array(wpjam_sort($tabs, 'order', 'desc', 10), fn($s, $tab)=> ($tab = new self(['tab_slug'=>$s, 'admin_url'=>$this->admin_url.'&tab='.$s]+$tab+['capability'=>$this->capability]))->query_data() ? [$s, $tab, $GLOBALS['current_tab'] ??= $s] : null);

			$object	= $tabs ? ($tabs[$GLOBALS['current_tab']] ?? $this->throw('无效的 Tab')) : $this->throw('Tabs 未设置');

			$object->type || $object->function || $this->throw('Tab 未设置 function');
			$object->type == 'tab' && $this->throw('Tab 不能嵌套 Tab');

			$object->menu_slug	= $this->menu_slug;

			if(!wp_doing_ajax()){
				$this->tabs		= $tabs;
				$this->render	= [$object, 'render'];
			}

			wpjam_admin('current_tab', $object);
			wpjam_admin('load');
		}elseif($type){
			$object	??= $this->page_object($type, $name);

			if($type == 'dashboard'){
				$load	= fn()=> wpjam_dashboard('load');
				$render	= fn()=> wpjam_dashboard('render');
			}else{
				$load	= wpjam_callback([$object, 'page_load']);;
				$render	= [$object, 'render'];
			}

			$load && (wp_doing_ajax() ? $load() : add_action('load-'.wpjam_admin('page_hook'), $load));

			$this->render		= $render;
			$this->page_title	= $object->title ?: $this->page_title;
			$this->summary		= $this->summary ?: $object->get_arg('summary');

			$object->query_args && wpjam_admin('query_data', $this->get_param($object->query_args));
		}else{
			$function		= $this->function ?: wpjam_get_filter_name($this->name, 'page');
			$this->render	= is_callable($function) ? fn()=> wpjam_chart('render').wpjam_ob($function) : $this->throw('页面函数'.'「'.$function.'」未定义。');
		}
	}

	private function page_object($type, $name, $step=''){
		$object	= null;
		$args	= $this->$type;

		if($step == 'preprocess'){
			if($type == 'option'){
				$object	= WPJAM_Option_Setting::get($name);
				$object	= $object ? $object->get_current() : null;
			}elseif($type == 'form'){
				$object	= wpjam_get_page_action($name);
			}

			if($object){
				$args	= $object->to_array();
			}else{
				$model	= in_array($type, ['list_table', 'form']) ? ($args ? (is_string($args) ? $args : '') : $this->model) : '';
				$args	= ($cb = wpjam_callback([$model, 'get_'.$type])) ? $cb($this) : $args;
				$args	= wpjam_is_assoc_array($args) ? $args+$this->pick(['model']) : $args;

				$args && ($args	= $this->$type = maybe_callback($args, $this));
			}

			if(is_array($args)){
				!empty($args['meta_type']) && wpjam_admin('meta_type', $args['meta_type']);

				$this->update_args(wpjam_admin('data_type', $args));
			}

			return $object;
		}

		if(!$args){
			array_any(['form'=>['callback'], 'option'=>['sections', 'fields'], 'dashboard'=>['widgets'], 'list_table'=>['model']][$type], fn($k)=> $this->$k) || $this->throw($type.'「'.$name.'」未定义。');

			$args	= $type == 'list_table' ? wpjam_except($this->to_array(), 'defaults') : $this->to_array();
		}

		if($type == 'option'){
			return wpjam_register_option($name, $args)->get_current();
		}elseif($type == 'form'){
			return wpjam_register_page_action($name, $args);
		}elseif($type == 'dashboard'){
			return wpjam_dashboard(['name'=>$name]+$args);
		}

		$model	= $args['model'] ?? '';

		(!$model || !class_exists($model)) && $this->throw('List Table Model'.'「'.$model.'」未定义。');

		$this->defaults($args['defaults'] ?? []);

		wpjam_map(['admin_head', 'admin_footer'], fn($v)=> wpjam_hook($v, wpjam_callback([$model, $v])));

		return new WPJAM_List_Table($args+array_filter([
			'layout'	=> 'table',
			'name'		=> $name,
			'singular'	=> $name,
			'plural'	=> $name.'s',
			'capability'=> $this->capability ?: 'manage_options',
			'sortable'	=> $this->sortable,
			'data_type'	=> 'model',
			'per_page'	=> 50
		]));
	}

	public function render(){
		$sum	= maybe_callback($this->summary, $this->menu_slug, $this->tab_slug ?: '');
		$sum	= !$sum || is_array($sum) ? '' : (is_file($sum) ? wpjam_get_file_data($sum, 'summary') : $sum);
		$tag	= wpjam_tag('h1', ['wp-heading-inline'], ($this->page_title ?? $this->title))->after([
			['hr', ['wp-header-end']],
			$sum ? ['p', ['summary'], $sum] : '',
			...($this->type == 'tab' ? [
				wpjam_ob(wpjam_get_filter_name($this->menu_slug, 'page')) ?: '',	// 所有 Tab 页面都执行
				wpjam_tag('nav', ['nav-tab-wrapper', 'wp-clearfix'])->append(array_map(fn($tab)=> ['a', ['class'=>['nav-tab', $tab->is_current() ? 'nav-tab-active' : ''], 'href'=>$tab->admin_url], ($tab->tab_title ?: $tab->title)], $this->tabs))
			] : []),
			wpjam_call($this->render, $this)
		]);

		return $this->tab_slug ? $tag->tag('h2') : wpjam_echo($tag->wrap('div', ['wrap']));
	}
}

class WPJAM_Page_Action extends WPJAM_Args{
	public function __invoke($type=''){
		if($type == 'form'){
			if(!($title	= $_POST['page_title'] ?? '')){
				if($key	= array_find(['page_title', 'button_text', 'submit_text'], fn($k)=> $this->$k && !is_array($this->$k))){
					$title	= $this->$key;
				}
			}

			return $this->pick(['width', 'modal_id'])+['type'=>'form', 'form'=>$this->get_form(), 'page_title'=>$title];
		}

		$this->is_allowed($type) || wp_die('access_denied');

		$args	= $this->validate ? [wpjam_params('data', $this->get_fields())] : [];
		$submit	= $type == 'submit' ? (($_POST['submit'] ?? '') ?: $this->name) : '';
		$button	= $submit ? wpjam_button($this, $submit) : [];
		$type	= $button['response'] ?? ($this->response ?? $this->name);
		$cb		= $button['callback'] ?? $this->callback;
		$result	= ($cb ? wpjam_try($cb, ...[...$args, $submit ?: $this->name]) : null) ?? wpjam_throw('invalid_callback');

		if(is_array($result)){
			if(empty($result['errcode'])){
				$result['notice']	??= wpjam_pull($result, 'errmsg') ?: '';
			}
		}else{
			$result	= is_string($result) ? [($type == 'redirect' ? 'url' : 'data')=>$result] : [];
		}

		$result	+= ['type'=>$type]+$this->pick(['dismiss']);
		$result	+= $result['type'] == 'redirect' ? $this->pick(['target']) : [];

		return apply_filters('wpjam_ajax_response', $result);
	}

	public function is_allowed($type=''){
		return wpjam_can($this->capability ?? ($type ? 'manage_options' : ''), $this->name);
	}

	public function render(){
		return wpjam_trap([$this, 'get_form'], 'die');
	}

	public function get_button($args=[]){
		if($this->is_allowed()){
			$text	= $this->update_args(wpjam_except($args, 'data'))->button_text ?? '保存';

			return wpjam_tag(($this->tag ?: 'a'), $this->pick(['style', 'class'])+[
				'class'	=> 'button-primary large',
				'title'	=> $this->page_title ?: $text,
				'data'	=> $this->get_attr($args)+$this->pick(['direct', 'confirm'])+['title'=>$this->page_title ?: $this->button_text]
			], $text)->add_class('wpjam-button');
		}
	}

	public function get_form(){
		if($this->is_allowed()){
			return $this->get_fields()->wrap('form', [
				'id'		=> $this->form_id ?: 'wpjam_form',
				'button'	=> wpjam_button($this),
				'data'		=> $this->get_attr()
			]);
		}
	}

	public function get_attr($args=[]){
		return [
			'action'	=> $this->name,
			'nonce'		=> wp_create_nonce($this->name),
			'data'		=> wp_parse_args($args['data'] ?? [], ($this->data ?: [])),
		];
	}

	public function get_fields(){
		$fields	= wpjam_try('maybe_callback', $this->fields, $this->name) ?: [];
		$data	= is_callable($this->data_callback) ? wpjam_try($this->data_callback, $this->name, $fields) : [];

		return wpjam_fields($fields, wpjam_merge($this->args, ['data'=>$data ?: []]));
	}
}

class WPJAM_Chart extends WPJAM_Args{
	public function validate($data){
		$fields	= wpjam_fields($this->get_fields(['data'=>$data]));

		return $fields->validate($data+$fields->get_defaults());
	}

	public function render($wrap=true){
		if(!$this->show_form){
			return;
		}

		$fields	= is_array($wrap) ? $this->get_fields() : apply_filters('wpjam_chart_fields', $this->get_fields());
		$fields += $wrap === true ? ['chart_button'=>['type'=>'submit', 'value'=>'显示', 'class'=>'button button-secondary']] : [];	
		$fields	= wpjam_fields($fields)->render(is_array($wrap) ? $wrap : ['fields_type'=>'']);

		return $wrap === true //.($this->show_compare && $current != -1 ? '&type='.$current : ''); 
		? $fields->wrap('form', ['method'=>'POST', 'action'=>$GLOBALS['current_admin_url'], 'id'=>'chart_form', 'class'=>'chart-form'])
		: $fields;
	}

	public function get_value($key, $args=[]){
		if(is_array($key)){
			return wpjam_fill($key, fn($k)=> $this->get_value($k, $args));
		}

		if(str_contains($key, 'timestamp')){
			return wpjam_strtotime($this->get_value(str_replace('timestamp', 'date', $key)).' '.(str_starts_with($key, 'end_') ? '23:59:59' : '00:00:00'));
		}

		if($value = ($args['data'][$key] ?? '') ?: wpjam_param($key, $args['method'] ?? $this->method)){
			wpjam_set_cookie($key, $value, HOUR_IN_SECONDS);
		}

		if($value = $_COOKIE[$key] ?? ''){
			return $value;
		}

		if(in_array($key, ['date_format', 'date_type'])){
			return '%Y-%m-%d';
		}elseif($key == 'compare'){
			return 0;
		}

		if(in_array($key, ['date', 'start_date', 'end_date'])){
			$ts	= time() - (DAY_IN_SECONDS*['date'=>1, 'start_date'=>30, 'end_date'=>0][$key]);
		}elseif(in_array($key, ['start_date_2', 'end_date_2'])){
			$ts	= $this->get_value('start_timestamp') - DAY_IN_SECONDS;
			$ts	-= $key == 'start_date_2' ? ($this->get_value('end_timestamp') - $this->get_value('start_timestamp')) : 0;
		}

		return isset($ts) ? wpjam_date('Y-m-d', $ts) : null;
	}

	public function get_fields($args=[]){
		$start	= $args['show_start_date'] ?? $this->show_start_date;
		$comp	= $this->show_compare && $start;
		$fields	= ['date_set'=>['title'=>($args['title'] ?? ($comp ? '日期' : '')), 'sep'=>' ', 'fields'=>($start ? [
			'start_date'	=> ['type'=>'date'],
			'date_view'		=> ['type'=>'view',		'value'=>'-'],
			'end_date'		=> ['type'=>'date']
		] : [
			'prev_day'		=> ['type'=>'button',	'value'=>'‹',	'class'=>'button prev-day'],
			'date'			=> ['type'=>'date'],
			'next_day'		=> ['type'=>'button',	'value'=>'›',	'class'=>'button next-day']
		])]+($start ? ['validate_callback'=>function($data){
			$span	= $this->max_date_span;
			$diff	= strtotime($data['end_date']) - strtotime($data['start_date']);

			if($msg	= $diff < 0 ? '开始日期不能大于结束日期' : ($span && $diff > DAY_IN_SECONDS * $span ? '时长不能超过'.$span.'天' : '')){
				wpjam_throw('error', $msg);
			}
		}] : [])];

		$fields	+= $this->show_date_type ? ['date_format'=>['type'=>'select', 'options'=>['%Y-%m'=>'按月', '%Y-%m-%d'=>'按天', '%Y-%m-%d %H:00'=>'按小时', '%Y-%m-%d %H:%i'=>'按分钟']]] : [];	// '%Y%U'=>'按周'

		$fields	+= $comp && wpjam_param('type', ['default'=>-1]) !=-1 ? ['compare_set'=>['before'=>'对比：',	'sep'=>' ',	'fields'=>[
			'start_date_2'	=> ['type'=>'date'],
			'date_view_2'	=> ['type'=>'view',	'value'=>'-'],
			'end_date_2'	=> ['type'=>'date'],
			'compare'		=> ['type'=>'checkbox'],
		]]] : [];

		return wpjam_map($fields, fn($v, $k)=> $v+(in_array($v['type'], ['date', 'checkbox']) ? [
			'value'				=> $this->get_value($k, $args),
			'value_callback'	=> fn($k)=> $this->get_value($k, $args)
		] : []), ['deep'=>'fields']);
	}

	public static function line($data, $args=[], $type='Line'){
		foreach(($args['labels'] ?? []) as $k => $v){
			if(is_array($v)){
				$columns[$k]	= $v['label'];

				if($v['show_in_chart'] ?? true){
					$labels[$k]	= $v['label'];
				}

				if(!empty($v['callback'])){
					$cbs[$k]	= $v['callback'];
				}
			}else{
				$columns[$k]	= $labels[$k] = $v;
			}
		}

		$xkey	= $args['day_key'] ?? 'day';
		$ykeys	= array_keys($labels);
		$data	+= ($args['show_table'] ?? true) && $data ? ['total' => array_fill_keys($ykeys, 0)] : [];

		foreach($data as $day => &$item){
			$item	= (array)$item;
			$item	= array_merge($item, isset($cbs) ? array_map(fn($cb)=> $cb($item), $cbs) : []);

			if($day !== 'total'){
				$item[$xkey] ??= $day;

				if(isset($data['total'])){
					$data['total']		= wpjam_map($data['total'], fn($v, $k)=> $v+(is_numeric($item[$k] ?? null) ? $item[$k] : 0));
					$rows[$item[$xkey]]	= $item;
				}

				$item	= wpjam_pull($item, [...$ykeys, $xkey]);
			}
		}

		$total	= wpjam_pull($data, 'total');
		$tag	= wpjam_tag();

		if($args['show_chart'] ?? true){
			$tag->append(wpjam_tag('div', [
				'id'	=> $args['chart_id'] ?? 'daily-chart',
				'data'	=> ['chart'=>['type'=>$type, 'options'=>['data'=>$data, 'xkey'=>$xkey, 'ykeys'=>$ykeys, 'labels'=>array_values($labels)]]]
			]));
		}

		if($total && $data){
			$labels		= ($args['day_labels'] ?? [])+['sum'=>'累加', 'avg'=>'平均'];
			$columns	= [$xkey => $args['day_label'] ?? '时间']+$columns;
			$th			= wpjam_tag('tr')->append(wpjam_map($columns, fn($col, $id)=> wpjam_tag('th', ['scope'=>'col', 'id'=>$id], $col)));
			$rows		+= ($args['show_sum'] ?? true) ? ['sum'=>$total] : [];
			$rows		+= ($args['show_avg'] ?? true) ? ['avg'=>array_map(fn($v)=> is_numeric($v) ? round($v/count($data)) : '', $total)] : [];
			$rows		= wpjam_map($rows, fn($row, $k)=> wpjam_tag('tr')->append(wpjam_map($columns, fn($col, $id)=> wpjam_tag('td', [
				'data'	=> ['colname'=>$col],
				'class'	=> ['column-'.$id, ($id == $xkey ? 'column-primary' : '')]
			])->append($id == $xkey ? [($labels[$k] ?? $k), wpjam_tag('button', ['class'=>'toggle-row'])] : ($row[$id] ?? '')))));

			$tag->append(wpjam_tag('table', ['class'=>'wp-list-table widefat striped'])->append([
				wpjam_tag('thead')->append($th),
				wpjam_tag('tbody')->append($rows),
				wpjam_tag('tfoot')->append($th)
			]));
		}

		return $tag;
	}

	public static function bar($data, $args=[]){
		return self::line($data, $args, 'Bar');
	}

	public static function donut($data, $args=[]){
		$tag	= wpjam_tag('div', ['class'=>'donut-chart-wrap']);
		$data	= wpjam_array($data, fn($k, $v)=> [null, [
			'label'	=> !empty($v['label']) ? ($args['labels'][$v['label']] ?? $v['label']) : '/',
			'value'	=> $v['count']
		]]);

		if($args['show_chart'] ?? true){
			$tag->append('div', [
				'id'	=> $args['chart_id'] ?? 'chart_'.wp_generate_password(6, false, false),
				'data'	=> ['chart'=>['type'=>'Donut', 'options'=>['data'=>$data]]]
			]);
		}

		if(($args['show_table'] ?? true) && $data){
			$columns	= (!empty($args['show_line_num']) ? ['no'=>'排名'] : [])+['label'=>$args['title'] ?? '名称', 'value'=>'数量'];

			if($total = $args['total'] ?? false){
				$total		= $total === true ? array_sum(array_column($data, 'value')) : $total;
				$data		+= ['total'=>['label'=>'所有', 'value'=>$total]];
				$columns	+= ['rate'=>'比例'];
			}

			$tag->append(wpjam_tag('table', ['wp-list-table', 'widefat', 'striped'])->append([
				wpjam_tag('thead')->append(wpjam_tag('tr')->append(wpjam_map($columns, fn($col, $id)=> wpjam_tag('th', ['scope'=>'col', 'id'=>$id], $col)))),
				wpjam_tag('tbody')->append(wpjam_map($data, fn($item, $k)=> wpjam_tag('tr')->append(wpjam_map($columns, fn($col, $id)=> wpjam_tag('td', ['data'=>['colname'=>$col]], $item[$id] ?? ($id == 'no' ? ($k === 'total' ? '' : $k+1) : round($item['value']/$total*100, 2).'%'))))))
			]));
		}

		return $tag;
	}

	public static function create($args=[]){
		$offset	= (int)get_option('gmt_offset');
		$offset	= $offset >= 0 ? '+'.$offset.':00' : $offset.':00';

		$GLOBALS['wpdb']->query("SET time_zone = '{$offset}';");

		wpjam_style('morris',	['cdn'=>true, 'src'=>'/morris.js/0.5.1/morris.css']);
		wpjam_script('raphael',	['cdn'=>true, 'src'=>'/raphael/2.3.0/raphael.min.js']);
		wpjam_script('morris',	['cdn'=>true, 'src'=>'/morris.js/0.5.1/morris.min.js']);

		return new self($args+[
			'method'			=> 'POST',
			'show_form'			=> true,
			'show_start_date'	=> true,
			'show_date_type'	=> false,
			'show_compare'		=> false
		]);
	}
}