<?php
/**
 * User center helpers.
 *
 * @package AKSRT
 */

defined('ABSPATH') || exit;

if (!function_exists('aksrt_normalize_user_contacts')) {
	/**
	 * Sanitize the editable public contact list.
	 *
	 * @param mixed $raw_contacts Submitted contact rows.
	 * @return array<int, array{name:string,url:string,icon:string}>
	 */
	function aksrt_normalize_user_contacts($raw_contacts): array {
		$contacts = [];
		if (!is_array($raw_contacts)) {
			return $contacts;
		}

		foreach ($raw_contacts as $contact) {
			if (!is_array($contact)) {
				continue;
			}

			$url  = isset($contact['url']) ? esc_url_raw(wp_unslash($contact['url'])) : '';
			$icon = isset($contact['icon']) ? sanitize_key(wp_unslash($contact['icon'])) : '';
			$icon = preg_replace('/^(fab|fas|far)[\s-]*/', '', $icon);
			$icon = preg_replace('/^fa[\s-]*/', '', (string) $icon);
			$icon = trim(preg_replace('/^[\s-]+/', '', (string) $icon), '- ');
			if (!$url || !$icon) {
				continue;
			}

			$contacts[] = [
				'name' => aksrt_icon_key_to_name($icon),
				'url'  => $url,
				'icon' => $icon,
			];
		}

		return $contacts;
	}
}

if (!function_exists('aksrt_save_user_center_profile')) {
	/**
	 * Save the user-center profile form for both AJAX and no-JS requests.
	 *
	 * @param int   $user_id User being updated.
	 * @param array $input   Untrusted request data.
	 * @return true|WP_Error
	 */
	function aksrt_save_user_center_profile(int $user_id, array $input) {
		if (!$user_id || $user_id !== get_current_user_id()) {
			return new WP_Error('aksrt_profile_forbidden', __('无权操作', 'aksrt'));
		}

		$errors = [];
		$update = ['ID' => $user_id];

		if (isset($input['nickname'])) {
			$name = sanitize_text_field(wp_unslash($input['nickname']));
			if (mb_strlen($name) < 1 || mb_strlen($name) > 50) {
				$errors[] = __('昵称长度需在 1-50 字之间', 'aksrt');
			} else {
				$update['display_name'] = $name;
			}
		}

		if (isset($input['description'])) {
			$description = sanitize_textarea_field(wp_unslash($input['description']));
			if (mb_strlen($description) > 500) {
				$errors[] = __('个人简介不能超过 500 字', 'aksrt');
			} else {
				$update['description'] = $description;
			}
		}

		if ($errors) {
			return new WP_Error('aksrt_profile_invalid', implode('<br>', $errors));
		}

		if (count($update) > 1) {
			$result = wp_update_user($update);
			if (is_wp_error($result)) {
				return $result;
			}
		}

		update_user_meta($user_id, 'aksrt_user_contacts', aksrt_normalize_user_contacts($input['contacts'] ?? []));


		return true;
	}
}

if (!function_exists('aksrt_get_user_center_tab_url')) {
	/**
	 * Build a canonical full-page user-center tab URL.
	 */
	function aksrt_get_user_center_tab_url(string $tab): string {
		$tab = sanitize_key($tab);
		if ('invite' === $tab || 'promotion' === $tab) {
			$tab = 'revenue';
		}
		return aksrt_get_user_center_url($tab);
	}
}

if (!function_exists('aksrt_normalize_user_center_tabs')) {
	/**
	 * Normalize the dashboard tab contract.
	 */
	function aksrt_normalize_user_center_tabs(array $tabs): array {
		$normalized = [];
		foreach ($tabs as $key => $tab) {
			$key = sanitize_key((string) $key);
			if (!$key || !is_array($tab)) {
				continue;
			}
			$normalized[$key] = [
				'label'            => (string) ($tab['label'] ?? $key),
				'icon'             => sanitize_html_class((string) ($tab['icon'] ?? 'circle')),
				'template'         => isset($tab['template']) ? (string) $tab['template'] : '',
				'context_callback' => $tab['context_callback'] ?? null,
			];
		}
		return $normalized;
	}
}

if (!function_exists('aksrt_capture_user_center_view')) {
	/**
	 * Render an internal user-center view into an inert HTML payload.
	 */
	function aksrt_capture_user_center_view(string $view, array $context): string {
		// Built-in panels map to renderer files; "profile" content lives in profile-form.php.
		$map = [
			'level'          => 'level',
			'profile'        => 'form',
			'creator'        => 'creator',
			'comments'       => 'comments',
			'favorites'      => 'favorites',
			'credits'        => 'credits',
			'vip'            => 'vip',
			'orders'         => 'orders',
			'auth'           => 'auth',
			'revenue'        => 'revenue',
			'settings'       => 'settings',
			'header'         => 'header',
			'sidebar'        => 'sidebar',
			'account-modals' => 'account-modals',
		];
		$view = sanitize_file_name($view);
		$renderer = $map[$view] ?? $view;
		$path = AKSRT_DIR . '/inc/helpers/user-center-renderers/profile-' . $renderer . '.php';
		if (!is_file($path)) {
			return '';
		}

		ob_start();
		$args = ['context' => $context];
		require $path;
		return (string) ob_get_clean();
	}
}

if (!function_exists('aksrt_capture_user_center_panel')) {
	/**
	 * Capture a built-in or registered user-center panel body.
	 */
	function aksrt_capture_user_center_panel(string $tab_key, array $tab, array $context): string {
		$built_in_tabs = ['profile', 'level', 'creator', 'comments', 'favorites', 'credits', 'vip', 'orders', 'auth', 'revenue', 'settings'];
		if (in_array($tab_key, $built_in_tabs, true)) {
			return aksrt_capture_user_center_view($tab_key, $context);
		}

		$panel_context = $context;
		if (is_callable($tab['context_callback'] ?? null)) {
			$custom_context = call_user_func($tab['context_callback'], $context, $tab_key);
			if (is_array($custom_context)) {
				$panel_context = array_merge($panel_context, $custom_context);
			}
		}

		$template = ltrim((string) ($tab['template'] ?? ''), '/');
		if ($template === '') {
			return '';
		}

		$template_path = locate_template([$template . '.php', $template], false, false);
		if (!$template_path) {
			return '';
		}

		ob_start();
		load_template($template_path, false, ['context' => $panel_context]);
		return (string) ob_get_clean();
	}
}

if (!function_exists('aksrt_build_user_center_render_context')) {
	/**
	 * Assemble all runtime data before template parts are entered.
	 */
	function aksrt_build_user_center_render_context(array $context): array {
		$active_tab = (string) ($context['active_tab'] ?? 'profile');
		$context['header_html'] = aksrt_capture_user_center_view('header', $context);
		$context['sidebar_html'] = aksrt_capture_user_center_view('sidebar', $context);
		$context['mobile_tabs'] = [];
		foreach ((array) ($context['dashboard_tabs'] ?? []) as $tab_key => $tab) {
			$context['mobile_tabs'][] = [
				'key'       => (string) $tab_key,
				'label'     => (string) ($tab['label'] ?? $tab_key),
				'url'       => aksrt_get_user_center_tab_url((string) $tab_key),
				'is_active' => $active_tab === $tab_key,
			];
		}

		$context['panels'] = [];
		foreach ((array) ($context['dashboard_tabs'] ?? []) as $tab_key => $tab) {
			$context['panels'][$tab_key] = [
				'key'       => (string) $tab_key,
				'url'       => aksrt_get_user_center_tab_url((string) $tab_key),
				'is_active' => $active_tab === $tab_key,
				'is_loaded' => $active_tab === $tab_key,
				'html'      => $active_tab === $tab_key
					? aksrt_capture_user_center_panel((string) $tab_key, (array) $tab, $context)
					: '',
			];
		}

		$context['account_modals_html'] = 'settings' === $active_tab
			? aksrt_capture_user_center_view('account-modals', $context)
			: '';
		return $context;
	}
}


if (!function_exists('aksrt_user_center_empty_svgs')) {
	/**
	 * Shared empty-state icons for user-center panels.
	 *
	 * @return array{post:string,comment:string,favorite:string}
	 */
	function aksrt_user_center_empty_svgs(): array {
		return [
			'post' => '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5"><path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"/><path d="M14 2v6h6"/></svg>',
			'comment' => '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5"><path d="M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z"/></svg>',
			'favorite' => '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5"><polygon points="12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2"/></svg>',
		];
	}
}

if (!function_exists('aksrt_user_center_resolve_tabs')) {
	/**
	 * Resolve dashboard tabs + active tab for the private user center.
	 *
	 * @return array{tabs:array,keys:array<int,string>,default:string,active:string,urls:array<string,string>}
	 */
	function aksrt_user_center_resolve_tabs(): array {
		$tabs = class_exists('\AKSRT\User\Center')
			? \AKSRT\User\Center::get_instance()->get_dashboard_tabs()
			: [
				'profile'   => ['label' => __('个人信息', 'aksrt'), 'icon' => 'user'],
				'comments'  => ['label' => __('我的评论', 'aksrt'), 'icon' => 'comment'],
				'favorites' => ['label' => __('我的收藏', 'aksrt'), 'icon' => 'star'],
				'settings'  => ['label' => __('账号设置', 'aksrt'), 'icon' => 'cog'],
			];
		$tabs = aksrt_normalize_user_center_tabs($tabs);
		$keys = array_keys($tabs);
		$default = in_array('vip', $keys, true)
			? 'vip'
			: (in_array('profile', $keys, true) ? 'profile' : ($keys[0] ?? 'profile'));
		$active = (string) get_query_var('aksrt_user_center_tab') ?: $default;
		if ($active === 'balance') {
			$active = 'credits';
		}
		if ('signin' === $active || 'assets' === $active) {
			$active = 'credits';
		} elseif ('invite' === $active || 'promotion' === $active) {
			$active = 'revenue';
		} elseif ('vip' === $active) {
			// Prefer dedicated vip tab when registered; else credits (VIP shop).
			$active = in_array('vip', $keys, true) ? 'vip' : 'credits';
		}
		if (!in_array($active, $keys, true)) {
			$active = $default;
		}
		$urls = [];
		foreach ($keys as $key) {
			$urls[$key] = aksrt_get_user_center_tab_url($key);
		}
		return [
			'tabs'    => $tabs,
			'keys'    => $keys,
			'default' => $default,
			'active'  => $active,
			'urls'    => $urls,
		];
	}
}

if (!function_exists('aksrt_user_center_runtime_config')) {
	/**
	 * Frontend runtime config injected into the private user center page.
	 */
	function aksrt_user_center_runtime_config(int $user_id, string $default_tab, string $active_tab, array $tab_urls): array {
		return [
			'ajaxUrl'       => admin_url('admin-ajax.php'),
			'publicNonce'   => wp_create_nonce('aksrt_public_nonce'),
			'settingsNonce' => wp_create_nonce('aksrt_account_settings'),
			'userId'        => $user_id,
			'restUrl'        => rest_url('aksrt/v1'),
				'restNonce'      => wp_create_nonce('wp_rest'),
			'submitNonce'    => wp_create_nonce('aksrt_submit'),
				'defaultTab'    => $default_tab,
			'activeTab'     => $active_tab,
			'tabAliases'    => [
					'signin' => 'credits',
				'invite' => 'revenue',
				'promotion' => 'revenue',
				'assets' => 'credits',
					// vip → vip when panel exists; SPA may still map missing keys via server resolve.
					'vip'    => 'vip',
				],
			'tabUrls'       => $tab_urls,
			'i18n'          => [
				'contactUrlPlaceholder' => __('链接 URL', 'aksrt'),
				'deleteLabel'            => __('删除', 'aksrt'),
				'saving'                 => __('保存中…', 'aksrt'),
				'saveBtn'                => __('保存修改', 'aksrt'),
				'saved'                  => __('已保存', 'aksrt'),
				'saveFailed'             => __('保存失败', 'aksrt'),
				'networkError'           => __('网络错误，请重试', 'aksrt'),
				'confirmUnfavorite'      => __('确定取消收藏这篇文章？', 'aksrt'),
				'unfavorited'            => __('已取消收藏', 'aksrt'),
				'operationFailed'        => __('操作失败', 'aksrt'),
				'confirmUnbind'          => __('确定解除绑定?', 'aksrt'),
				'unbinding'              => __('解除中...', 'aksrt'),
				'unbindSuccess'          => __('解除成功', 'aksrt'),
				'unbindFailed'           => __('解除失败', 'aksrt'),
				'unbind'                 => __('解除', 'aksrt'),
			],
		];
	}
}

if (!function_exists('aksrt_user_center_avatar_upload_config')) {
	/**
	 * Avatar upload config for the private user center.
	 */
	function aksrt_user_center_avatar_upload_config(bool $enabled): array {
		if (!$enabled) {
			return [];
		}
		$settings = class_exists('\AKSRT\Settings\Settings') ? \AKSRT\Settings\Settings::get_all() : [];
		$max_size = max(1, min(10, (int) ($settings['avatar_max_size'] ?? 2))) * MB_IN_BYTES;
		return [
			'enabled'           => true,
			'restUrl'           => rest_url('aksrt/v1/user/avatar'),
			'restNonce'         => wp_create_nonce('wp_rest'),
			'buttonId'          => 'aksrt-upload-avatar-btn',
			'inputId'           => 'aksrt-avatar-file-input',
			'imageId'           => 'aksrt-user-avatar-image',
			'fieldName'         => 'avatar',
			'maxSize'           => $max_size,
			'idleText'          => __('更换头像', 'aksrt'),
			'loadingText'       => __('上传中…', 'aksrt'),
			'tooLargeText'      => sprintf(__('图片大小不能超过 %dMB', 'aksrt'), (int) ($max_size / MB_IN_BYTES)),
			'successText'       => __('头像已更新', 'aksrt'),
			'errorText'         => __('头像上传失败', 'aksrt'),
		];
	}
}

if (!function_exists('aksrt_user_center_cover_upload_config')) {
	/**
	 * Cover upload config for the private user-center hero.
	 */
	function aksrt_user_center_cover_upload_config(bool $allow_bg_upload): array {
		if (!$allow_bg_upload) {
			return [];
		}
		return [
			'enabled'          => true,
			'restUrl'          => rest_url('aksrt/v1/user/background'),
			'restNonce'        => wp_create_nonce('wp_rest'),
			'buttonId'         => 'aksrt-upload-bg-btn',
			'inputId'          => 'aksrt-bg-file-input',
			'imageId'          => 'aksrt-cover-img',
			'fieldName'        => 'background',
			'maxSize'          => 2097152,
			'fallbackImage'    => AKSRT_URI . '/assets/img/person_background.png',
			'idleText'         => __('编辑', 'aksrt'),
			'loadingText'      => __('上传中…', 'aksrt'),
			'tooLargeText'     => __('图片大小不能超过 2MB', 'aksrt'),
			'successText'      => __('背景图已更新', 'aksrt'),
			'errorText'        => __('上传失败', 'aksrt'),
			'networkErrorText' => __('网络错误，请重试', 'aksrt'),
		];
	}
}

if (!function_exists('aksrt_get_user_center_render_context')) {
	/**
	 * Resolve the current user's complete render context outside template files.
	 */
	function aksrt_get_user_center_render_context(WP_User $current_user): array {
		$user_id = (int) $current_user->ID;

		$user_center_settings = class_exists('\AKSRT\Settings\Settings')
			? \AKSRT\Settings\Settings::get_user_center_settings()
			: [
				'tabs'          => ['profile', 'comments', 'favorites'],
				'avatar_upload' => true,
				'cover_upload'  => true,
				'social_links'  => true,
			];

		$tabs = aksrt_user_center_resolve_tabs();
		$active_tab = $tabs['active'];

		$dashboard = function_exists('aksrt_get_user_dashboard_view')
			? aksrt_get_user_dashboard_view($user_id, [
				'viewer_id'            => $user_id,
				'include_recent_posts' => false,
				'include_governance'   => true,
			])
			: [];

		$post_count = (int) ($dashboard['post_count'] ?? count_user_posts($user_id, 'post', true));
		$comment_count = (int) ($dashboard['comment_count'] ?? get_comments(['user_id' => $user_id, 'count' => true, 'status' => 'approve']));
		$favorite_post_ids = $dashboard['favorite_post_ids'] ?? [];
		$favorite_count = (int) ($dashboard['favorite_count'] ?? count($favorite_post_ids));
		$user_contacts = $dashboard['user_contacts'] ?? get_user_meta($user_id, 'aksrt_user_contacts', true);
		$user_contacts = is_array($user_contacts) ? $user_contacts : [];
		$user_background_url = (string) ($dashboard['background_url'] ?? get_user_meta($user_id, 'aksrt_background_image', true));
		$allow_avatar_upload = !empty($user_center_settings['avatar_upload']);
		$allow_bg_upload = !empty($user_center_settings['cover_upload']) && class_exists('\AKSRT\Settings\Settings') && aksrt_get_setting('allow_background_upload', false);
		$messages_enabled = !class_exists('\AKSRT\Settings\Settings') || \AKSRT\Settings\Settings::message_enabled();
		$follower_count = class_exists('\AKSRT\User\Follow')
			? \AKSRT\User\Follow::get_instance()->get_follower_count($user_id)
			: 0;

		$svgs = aksrt_user_center_empty_svgs();
		require_once AKSRT_DIR . '/templates/parts/user-shared-helpers.php';

		$vip_settings = class_exists('\AKSRT\Settings\Settings') ? \AKSRT\Settings\Settings::get_payment_vip_settings() : [];
		$affiliate_settings = class_exists('\AKSRT\Settings\Settings') ? \AKSRT\Settings\Settings::get_payment_affiliate_settings() : [];
		$show_credit_tabs = (bool) ($dashboard['credits_enabled'] ?? false);
		$currency_name = (string) ($dashboard['currency_name'] ?? __('积分', 'aksrt'));
		$balance_enabled = (bool) ($dashboard['balance_enabled'] ?? false);
		$wallet_balance = (float) ($dashboard['wallet_balance'] ?? 0.0);
		$runtime_config = aksrt_user_center_runtime_config($user_id, $tabs['default'], $active_tab, $tabs['urls']);
		$runtime_config['avatarUpload'] = aksrt_user_center_avatar_upload_config($allow_avatar_upload);
		$revenue_settings = class_exists('\AKSRT\Settings\Settings') ? \AKSRT\Settings\Settings::get_payment_revenue_settings() : [];
		$show_revenue_section = !empty($revenue_settings['enabled']) || !empty($affiliate_settings['enabled']);
		$revenue_url = isset($tabs['tabs']['revenue'])
			? aksrt_get_user_center_tab_url('revenue')
			: '';

		$render_context = [
			'user_center_settings'      => $user_center_settings,
			'dashboard_tabs'            => $tabs['tabs'],
			'dashboard_tab_keys'        => $tabs['keys'],
			'default_dashboard_tab'     => $tabs['default'],
			'active_tab'                => $active_tab,
			'dashboard'                 => $dashboard,
			'target_user'               => $current_user,
			'user_id'                   => $user_id,
			'post_count'                => $post_count,
			'comment_count'             => $comment_count,
			'favorite_post_ids'         => $favorite_post_ids,
			'favorite_count'            => $favorite_count,
			'follower_count'            => $follower_count,
			'user_contacts'             => $user_contacts,
			'profile_signals'           => $dashboard['profile_signals'] ?? [],
			'user_background_url'       => $user_background_url,
			'allow_bg_upload'           => $allow_bg_upload,
			'show_avatar_edit'          => $allow_avatar_upload,
			'notification_unread_count' => function_exists('aksrt_get_user_unread_notification_count') ? aksrt_get_user_unread_notification_count($user_id) : 0,
			'messages_url'              => $messages_enabled && function_exists('aksrt_get_messages_page_url') ? aksrt_get_messages_page_url() : '',
			'revenue_url'               => $revenue_url,
			'per_page'                  => 10,
			'comments_page'             => max(1, isset($_GET['comments_page']) ? (int) $_GET['comments_page'] : 1),
			'favorites_page'            => max(1, isset($_GET['favorites_page']) ? (int) $_GET['favorites_page'] : 1),
			'svg_empty_comment'         => $svgs['comment'],
			'svg_empty_favorite'        => $svgs['favorite'],
			'orders_url'                => function_exists('aksrt_get_user_center_tab_url')
					? aksrt_get_user_center_tab_url('orders')
					: (function_exists('aksrt_get_orders_page_url') ? aksrt_get_orders_page_url() : ''),
			'show_vip'                  => !empty($vip_settings['enabled']),
			'show_credit_tabs'          => $show_credit_tabs,
			'affiliate_enabled'         => $show_credit_tabs && !empty($affiliate_settings['enabled']),
			'show_revenue_section'      => $show_revenue_section,
			'currency_name'             => $currency_name,
			'credit_balance'            => (float) ($dashboard['credit_balance'] ?? 0.0),
			'credits_enabled'           => $show_credit_tabs,
			'balance_enabled'           => $balance_enabled,
			'wallet_balance'            => $wallet_balance,
			'vip_settings'              => $vip_settings,
			'user_email'                => (string) $current_user->user_email,
			'runtime_config'            => $runtime_config,
			'cover_upload_config'       => aksrt_user_center_cover_upload_config($allow_bg_upload),
		];

		return aksrt_build_user_center_render_context($render_context);
	}
}