<?php
/**
 * Search box with hot keywords + type/cat scope (zibll widget_ui_search / zib_get_search_box).
 *
 * @package AKSRT
 */

namespace AKSRT\Widgets;

use AKSRT\Widgets\Traits\CommonWidgetFields;

defined('ABSPATH') || exit;

class SearchWidget extends \WP_Widget {
	use CommonWidgetFields;

	public function __construct() {
		parent::__construct('aksrt_search', esc_html__('AKSRT 搜索', 'aksrt'), [
			'description' => esc_html__('搜索框：类型切换、分类范围、热门关键词与搜索历史。', 'aksrt'),
			'classname'   => 'widget_aksrt_search',
		]);
	}

	public function widget($args, $instance): void {
		echo $args['before_widget']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
		$title = apply_filters('widget_title', (string) ($instance['title'] ?? ''), $instance, $this->id_base);
		if ($title !== '') {
			echo $args['before_title'] . esc_html($title) . $args['after_title']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
		}

		$placeholder = sanitize_text_field((string) ($instance['placeholder'] ?? __('开启精彩搜索', 'aksrt')));
		if ($placeholder === '' && function_exists('aksrt_get_search_placeholder')) {
			$placeholder = aksrt_get_search_placeholder();
		}
		$show_kw      = !empty($instance['show_keywords']);
		$show_history = !empty($instance['show_history']);
		$show_types   = !empty($instance['show_type']) || !isset($instance['show_type']);
		// NOTE: SearchWidget owns a business `show_type` checkbox (search-type
		// toggle) that shares the key name with the common `show_type` (device
		// visibility). To avoid an admin-form collision, this widget does NOT
		// render the shared common-form section (render_common_form_section is
		// intentionally not called). The shared affix helper is still wired in
		// widget() via aksrt_widget_affix_attrs(), and update_common_fields()
		// persists common keys — but note the shared show_type cannot be set
		// here, so display_callback treats it as 'all' (always visible).
		$show_cat     = !empty($instance['show_input_cat']);
		$kw_title     = sanitize_text_field((string) ($instance['keywords_title'] ?? __('热门搜索', 'aksrt')));
		$more_but     = sanitize_text_field((string) ($instance['more_but'] ?? ''));
		$more_url     = esc_url_raw(trim((string) ($instance['more_but_url'] ?? '')));
		// Affix helper (shared layer sidebar_affix).
		$affix        = function_exists('aksrt_widget_affix_attrs') ? aksrt_widget_affix_attrs($instance) : ['class' => '', 'attr' => ''];

		$state = function_exists('aksrt_get_search_form_state')
			? aksrt_get_search_form_state()
			: [
				'type'             => 'post',
				'types'            => ['post' => __('文章', 'aksrt')],
				'category_id'      => 0,
				'category_enabled' => false,
				'categories'       => [],
			];

		$type_options = is_array($state['types'] ?? null) ? $state['types'] : ['post' => __('文章', 'aksrt')];
		$in_type = sanitize_key((string) ($instance['in_type'] ?? $state['type'] ?? 'post'));
		if (!isset($type_options[$in_type])) {
			$in_type = array_key_first($type_options) ?: 'post';
		}

		// Category scope.
		$in_cat = max(0, (int) ($instance['in_cat'] ?? 0));
		if ($in_cat <= 0) {
			$in_cat = (int) ($state['category_id'] ?? 0);
		}
		$cat_enabled = $show_cat && ($state['category_enabled'] || !empty($instance['show_input_cat']));
		$categories = [];
		if ($cat_enabled) {
			$more_raw = trim((string) ($instance['more_cats'] ?? ''));
			if ($more_raw !== '') {
				$ids = array_values(array_filter(array_map('intval', preg_split('/[,，\s]+/', $more_raw) ?: [])));
				if ($ids) {
					$got = get_categories([
						'taxonomy'   => 'category',
						'include'    => $ids,
						'hide_empty' => false,
						'orderby'    => 'include',
					]);
					$categories = is_array($got) ? $got : [];
				}
			}
			if (!$categories) {
				$categories = is_array($state['categories'] ?? null) ? $state['categories'] : [];
			}
			if (!$categories && function_exists('aksrt_get_search_categories')) {
				$categories = aksrt_get_search_categories();
			}
		}

		// Only show type UI when more than one type is configured, unless forced.
		if ($show_types && count($type_options) < 2 && empty($instance['force_show_type'])) {
			// Still keep hidden type field for default.
			$show_types_ui = false;
		} else {
			$show_types_ui = $show_types && count($type_options) >= 1;
		}

		$keywords = [];
		if ($show_kw) {
			if (class_exists('\AKSRT\Settings\Settings') && method_exists('\AKSRT\Settings\Settings', 'hot_search_keywords')) {
				$keywords = \AKSRT\Settings\Settings::hot_search_keywords();
			} elseif (function_exists('aksrt_get_search_hot_keywords')) {
				$keywords = aksrt_get_search_hot_keywords();
			} elseif (function_exists('aksrt_get_setting')) {
				$raw = (string) aksrt_get_setting('hot_search_keywords', '');
				$keywords = array_values(array_filter(array_map('trim', preg_split('/[\r\n,，]+/', $raw) ?: [])));
			}
			$custom = trim((string) ($instance['keywords'] ?? ''));
			if ($custom !== '') {
				$keywords = array_values(array_filter(array_map('trim', preg_split('/[\r\n,，]+/', $custom) ?: [])));
			}
			$keywords = array_slice(is_array($keywords) ? $keywords : [], 0, 12);
		}

		$uid = 'aksrt-sw-' . esc_attr($this->id);
		?>
		<div class="widget-search-box aksrt-search-widget search-input<?php echo $affix['class']; ?>" id="<?php echo $uid; ?>"<?php echo $affix['attr']; ?>>
			<form
				role="search"
				method="get"
				class="aksrt-search-widget__form search-form"
				action="<?php echo esc_url(home_url('/')); ?>"
				data-aksrt-search-form="widget"
				data-default-search-type="<?php echo esc_attr($in_type); ?>"
				data-default-category="<?php echo esc_attr((string) $in_cat); ?>"
			>
				<?php if ($show_types_ui) : ?>
					<div class="aksrt-search-widget__types" role="tablist" aria-label="<?php esc_attr_e('搜索类型', 'aksrt'); ?>">
						<?php foreach ($type_options as $type_key => $type_label) : ?>
							<button
								type="button"
								class="aksrt-search-widget__type<?php echo $in_type === $type_key ? ' is-active' : ''; ?>"
								data-search-type="<?php echo esc_attr((string) $type_key); ?>"
							><?php echo esc_html((string) $type_label); ?></button>
						<?php endforeach; ?>
					</div>
				<?php endif; ?>

				<div class="aksrt-search-widget__line line-form">
					<?php if ($cat_enabled && !empty($categories)) : ?>
						<div class="aksrt-search-widget__cat option-dropdown">
							<label class="screen-reader-text" for="<?php echo $uid; ?>-cat"><?php esc_html_e('分类', 'aksrt'); ?></label>
							<select
								id="<?php echo $uid; ?>-cat"
								class="aksrt-search-widget__cat-select"
								data-search-category-select
								<?php disabled($in_type !== 'post'); ?>
							>
								<option value="0"><?php esc_html_e('全部分类', 'aksrt'); ?></option>
								<?php foreach ($categories as $term) :
									if (!$term instanceof \WP_Term) {
										continue;
									}
									?>
									<option value="<?php echo esc_attr((string) $term->term_id); ?>" <?php selected($in_cat, (int) $term->term_id); ?>>
										<?php echo esc_html($term->name); ?>
									</option>
								<?php endforeach; ?>
							</select>
						</div>
					<?php endif; ?>

					<div class="aksrt-search-widget__field search-input-text">
						<label class="screen-reader-text" for="<?php echo $uid; ?>-s"><?php esc_html_e('搜索关键词', 'aksrt'); ?></label>
						<input
							id="<?php echo $uid; ?>-s"
							type="search"
							name="s"
							class="widget-search-box__input line-form-input"
							placeholder="<?php echo esc_attr($placeholder); ?>"
							value="<?php echo esc_attr(get_search_query()); ?>"
							autocomplete="off"
						>
						<button type="submit" class="widget-search-box__btn" aria-label="<?php esc_attr_e('搜索', 'aksrt'); ?>">
							<i class="fas fa-search" aria-hidden="true"></i>
						</button>
					</div>
				</div>

				<input type="hidden" name="aksrt_search_type" value="<?php echo esc_attr($in_type); ?>">
				<?php if ($cat_enabled) : ?>
					<input type="hidden" name="aksrt_category" value="<?php echo esc_attr($in_type === 'post' && $in_cat > 0 ? (string) $in_cat : ''); ?>">
				<?php endif; ?>
			</form>

			<?php if ($show_history) : ?>
				<div class="aksrt-search-widget__history" data-aksrt-search-history>
					<div class="aksrt-search-widget__kw-head">
						<div class="aksrt-search-widget__kw-title"><?php esc_html_e('搜索历史', 'aksrt'); ?></div>
						<button type="button" class="aksrt-search-widget__history-clear" data-aksrt-search-history-clear hidden><?php esc_html_e('清空', 'aksrt'); ?></button>
					</div>
					<div class="aksrt-search-widget__history-list" data-aksrt-search-history-list></div>
				</div>
			<?php endif; ?>

			<?php if ($keywords) : ?>
				<div class="aksrt-search-widget__keywords">
					<?php if ($kw_title !== '') : ?>
						<div class="aksrt-search-widget__kw-title"><?php echo esc_html($kw_title); ?></div>
					<?php endif; ?>
					<div class="aksrt-search-widget__kw-list">
						<?php foreach ($keywords as $kw) :
							$kw = is_array($kw) ? (string) ($kw['keyword'] ?? $kw['text'] ?? '') : (string) $kw;
							if ($kw === '') {
								continue;
							}
							$url = function_exists('aksrt_build_search_url')
								? aksrt_build_search_url($kw, ['aksrt_search_type' => $in_type])
								: add_query_arg(['s' => $kw, 'aksrt_search_type' => $in_type], home_url('/'));
							?>
							<a class="aksrt-search-widget__kw" href="<?php echo esc_url($url); ?>"><?php echo esc_html($kw); ?></a>
						<?php endforeach; ?>
					</div>
				</div>
			<?php endif; ?>

			<?php if ($more_but !== '' && $more_url !== '') : ?>
				<div class="aksrt-search-widget__more">
					<a href="<?php echo esc_url($more_url); ?>"><?php echo esc_html($more_but); ?></a>
				</div>
			<?php endif; ?>
		</div>
		<?php
		echo $args['after_widget']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
	}

	public function form($instance): void {
		$type_options = function_exists('aksrt_get_search_type_options')
			? aksrt_get_search_type_options()
			: ['post' => __('文章', 'aksrt')];
		$in_type = sanitize_key((string) ($instance['in_type'] ?? 'post'));
		?>
		<p>
			<label><?php esc_html_e('标题（可选）', 'aksrt'); ?>
				<input class="widefat" type="text" name="<?php echo esc_attr($this->get_field_name('title')); ?>" value="<?php echo esc_attr((string) ($instance['title'] ?? '')); ?>">
			</label>
		</p>
		<p>
			<label><?php esc_html_e('占位文本', 'aksrt'); ?>
				<input class="widefat" type="text" name="<?php echo esc_attr($this->get_field_name('placeholder')); ?>" value="<?php echo esc_attr((string) ($instance['placeholder'] ?? __('开启精彩搜索', 'aksrt'))); ?>">
			</label>
		</p>
		<p>
			<label><input type="checkbox" name="<?php echo esc_attr($this->get_field_name('show_type')); ?>" value="1" <?php checked(!empty($instance['show_type']) || !isset($instance['show_type'])); ?>> <?php esc_html_e('显示类型切换（≥2 种时）', 'aksrt'); ?></label><br>
			<label><input type="checkbox" name="<?php echo esc_attr($this->get_field_name('show_input_cat')); ?>" value="1" <?php checked(!empty($instance['show_input_cat'])); ?>> <?php esc_html_e('显示分类筛选', 'aksrt'); ?></label><br>
			<label><input type="checkbox" name="<?php echo esc_attr($this->get_field_name('show_keywords')); ?>" value="1" <?php checked(!empty($instance['show_keywords'])); ?>> <?php esc_html_e('显示热门关键词', 'aksrt'); ?></label><br>
			<label><input type="checkbox" name="<?php echo esc_attr($this->get_field_name('show_history')); ?>" value="1" <?php checked(!empty($instance['show_history'])); ?>> <?php esc_html_e('显示搜索历史', 'aksrt'); ?></label>
		</p>
		<p>
			<label><?php esc_html_e('默认类型', 'aksrt'); ?>
				<select class="widefat" name="<?php echo esc_attr($this->get_field_name('in_type')); ?>">
					<?php foreach ($type_options as $k => $label) : ?>
						<option value="<?php echo esc_attr($k); ?>" <?php selected($in_type, $k); ?>><?php echo esc_html($label); ?></option>
					<?php endforeach; ?>
				</select>
			</label>
		</p>
		<p>
			<label><?php esc_html_e('默认分类 ID（0=全部）', 'aksrt'); ?>
				<input class="tiny-text" type="number" min="0" name="<?php echo esc_attr($this->get_field_name('in_cat')); ?>" value="<?php echo esc_attr((string) ((int) ($instance['in_cat'] ?? 0))); ?>">
			</label>
		</p>
		<p>
			<label><?php esc_html_e('可选分类 ID（逗号；空=后台/全部分类）', 'aksrt'); ?>
				<input class="widefat" type="text" name="<?php echo esc_attr($this->get_field_name('more_cats')); ?>" value="<?php echo esc_attr((string) ($instance['more_cats'] ?? '')); ?>">
			</label>
		</p>
		<p>
			<label><?php esc_html_e('关键词标题', 'aksrt'); ?>
				<input class="widefat" type="text" name="<?php echo esc_attr($this->get_field_name('keywords_title')); ?>" value="<?php echo esc_attr((string) ($instance['keywords_title'] ?? __('热门搜索', 'aksrt'))); ?>">
			</label>
		</p>
		<p>
			<label><?php esc_html_e('自定义关键词（逗号/换行；空=后台配置）', 'aksrt'); ?>
				<textarea class="widefat" rows="2" name="<?php echo esc_attr($this->get_field_name('keywords')); ?>"><?php echo esc_textarea((string) ($instance['keywords'] ?? '')); ?></textarea>
			</label>
		</p>
		<p>
			<label><?php esc_html_e('更多按钮文案', 'aksrt'); ?>
				<input class="widefat" type="text" name="<?php echo esc_attr($this->get_field_name('more_but')); ?>" value="<?php echo esc_attr((string) ($instance['more_but'] ?? '')); ?>">
			</label>
		</p>
		<p>
			<label><?php esc_html_e('更多按钮链接', 'aksrt'); ?>
				<input class="widefat" type="text" name="<?php echo esc_attr($this->get_field_name('more_but_url')); ?>" value="<?php echo esc_attr((string) ($instance['more_but_url'] ?? '')); ?>">
			</label>
		</p>
		<?php // Common-form section intentionally skipped: SearchWidget owns a
		      // business `show_type` checkbox (search-type toggle) that collides
		      // with the shared common `show_type` (device visibility). The
		      // shared affix/display/animation/layout fields are therefore not
		      // rendered here; update_common_fields() below still persists any
		      // common keys submitted through other surfaces, and the affix
		      // helper is wired in widget() via aksrt_widget_affix_attrs(). ?>
		<?php
	}

	public function update($new_instance, $old_instance): array {
		return $this->update_common_fields($new_instance, $old_instance, [
			'title'           => sanitize_text_field((string) ($new_instance['title'] ?? '')),
			'placeholder'     => sanitize_text_field((string) ($new_instance['placeholder'] ?? '')),
			'show_keywords'   => !empty($new_instance['show_keywords']) ? 1 : 0,
			'show_history'    => !empty($new_instance['show_history']) ? 1 : 0,
			'show_type'       => !empty($new_instance['show_type']) ? 1 : 0,
			'show_input_cat'  => !empty($new_instance['show_input_cat']) ? 1 : 0,
			'in_type'         => sanitize_key((string) ($new_instance['in_type'] ?? 'post')),
			'in_cat'          => max(0, (int) ($new_instance['in_cat'] ?? 0)),
			'more_cats'       => sanitize_text_field((string) ($new_instance['more_cats'] ?? '')),
			'keywords_title'  => sanitize_text_field((string) ($new_instance['keywords_title'] ?? '')),
			'keywords'        => sanitize_textarea_field((string) ($new_instance['keywords'] ?? '')),
			'more_but'        => sanitize_text_field((string) ($new_instance['more_but'] ?? '')),
			'more_but_url'    => esc_url_raw(trim((string) ($new_instance['more_but_url'] ?? ''))),
		]);
	}
}