<?php
namespace JVBase\blocks;

use JVBase\managers\CacheManager;
use JVBase\utility\Features;
use JVBase\utility\Checker;
use JVBase\forms\TaxonomySelector;
use WP_Block;

if (!defined('ABSPATH')) {
	exit;
}

class FeedBlock
{
	protected CacheManager $cache;
	protected array $config;
	protected string $path = JVB_DIR.'/build/feed';

	public function __construct()
	{
		// Initialize cache with connections
		$this->cache = CacheManager::for('feed_block', WEEK_IN_SECONDS);

		// Set up cache connections for all feed content types
		$this->setupCacheConnections();

		add_action('init', [$this, 'registerBlock']);
	}

	/**
	 * Set up cache connections for feed content
	 */
	protected function setupCacheConnections(): void
	{
		// Connect to all content types that show in feed
		$contentTypes = Features::getTypesWithFeature('show_feed', 'content');
		foreach ($contentTypes as $type) {
			CacheManager::for('feed_content')->connectTo('post', $type);
		}

		// Connect to all taxonomies that show in feed
		$taxonomies = Features::getTypesWithFeature('show_feed', 'taxonomy');
		foreach ($taxonomies as $tax) {
			CacheManager::for('feed_taxonomy')->connectTo('taxonomy', $tax);
		}
	}

	public function registerBlock()
	{
		register_block_type($this->path, [
			'render_callback' => [$this, 'render']
		]);
	}

	protected function buildParams(array $attributes): array
	{
		if (!jvbCheck('inheritQuery', $attributes)) {
			return [
				'title' => $attributes['title'],
				'content' => $attributes['contentTypes'],
				'taxonomies' => $this->getTaxonomies($attributes['contentTypes'])
			];
		}
		$config = [
			'is_gallery'    => false,
			'content'       => '',
			'taxonomies'    => []
		];
		$type = get_queried_object();

		if (is_post_type_archive() || is_singular()) {
			$content = is_singular() ? jvbNoBase($type->post_type) : jvbNoBase($type->name);
			$mainConfig = JVB_CONTENT[$content]??false;
			if ($mainConfig && array_key_exists('feed', $mainConfig) && array_key_exists('config', $mainConfig['feed'])){
				$config = array_merge($config, $mainConfig['feed']['config']);
			} else {
				$config['content'] = $content;
				$config['icon'] = JVB_CONTENT[$content]['icon']??['logo-triangle'];
			}
			if (is_singular()) {
				$config['source'] = $type->ID;
			}

			$config['taxonomies'] = $this->getTaxonomies([$content]);
		} elseif (is_tax()) {
			$content = jvbNoBase($type->taxonomy);
			$mainConfig = JVB_TAXONOMY[$content]??false;
			if ($mainConfig) {
				$config['content'] = $mainConfig['for_content'];
				$config['context'] = $content;  // ← ADD THIS
				$config['taxonomies'] = $this->getTaxonomies($mainConfig['for_content']);
				if (array_key_exists('feed', $mainConfig) && array_key_exists('config', $mainConfig['feed'])){
					$config = array_merge($config, $mainConfig['feed']['config']);
				}
			}
			$config['source'] = $type->term_id;
		}

		if (!is_array($config['content'])) {
			$config['content'] = [$config['content']];
		}

		return $config;
	}

	/**
	 * Get taxonomies for given content types
	 * Uses Checker instead of globals
	 */
	protected function getTaxonomies(array $content): array
	{
		$checker = Checker::getInstance();
		$taxonomies = [];

		foreach ($content as $contentType) {
			$contentTaxonomies = $checker->getTaxonomiesForContent($contentType);
			$contentTaxonomies = array_filter($contentTaxonomies, function($taxonomy) {
				return array_key_exists('show_feed', JVB_TAXONOMY[$taxonomy]) && JVB_TAXONOMY[$taxonomy]['show_feed'];
			});
			$taxonomies = array_merge($taxonomies, $contentTaxonomies);
		}

		return array_unique($taxonomies);
	}

	public function render(array $attributes, string $content, WP_Block $block)
	{
		$this->config = $this->buildParams($attributes);
		return $this->cache->remember(
			$this->config,
			function() {
				return $this->renderBlock();
			}
		);
	}

	protected function renderBlock(): string
	{
		$ids = (array_key_exists('ids', $this->config) && !empty($this->config['ids'])) ? ' id="'.implode(' ',$this->config['ids']).'"' : '';
		$classes = (array_key_exists('classes', $this->config) && !empty($this->config['classes'])) ? ' class="'.implode(' ',$this->config['classes']).'"' : '';
		$source = (array_key_exists('source', $this->config)) ? ' data-source="'.$this->config['source'].'"' : '';
		$context = (array_key_exists('context', $this->config)) ? ' data-context="'.$this->config['context'].'"' : '';
		$icons = (array_key_exists('icon', $this->config)) ? ' data-icon="'.$this->config['icon'].'"' : ' data-icon="logo-triangle"';
		$gallery = (array_key_exists('is_gallery', $this->config) && $this->config['is_gallery']) ? ' data-gallery' : '';
		$content = (array_key_exists('content', $this->config)) ? ' data-content="'.implode(',',$this->config['content']).'"' : '';
		ob_start();
		?>
		<section<?= $ids.$classes ?> class="feed-block"<?= $content.$source.$context.$gallery.$icons ?>>
			<?php
			$this->renderFilters();
			$this->renderGrid();
			$this->renderLoader();
			$this->renderTemplates();
			echo TaxonomySelector::outputSelectorModal();
			?>
		</section>
		<?php
		return ob_get_clean();
	}

	protected function renderFilters(): void
	{
		if (empty($this->config)) {
			return;
		}

		$feedContent = $this->getFeedContent();
		$hasMany = count($this->config['content']) > 1;
		?>
		<form class="feed-filters" data-save="feed-<?=$this->config['context']?>">
			<?php if ($hasMany) {
				//If we have multiple content, only show the content first
				?>
				<details class="col a-start">
				<summary class="row btw">
					<span class="label">SHOWING: </span>
					<?php
					$labels = [];
					foreach ($this->config['content'] as $i => $type) :

						$checked = $i === 0 ? ' checked' : '';
						$label = $feedContent[$type]['plural'] ?? ucfirst($type);
						?>
						<input type="radio"
							   id="filter-<?= esc_attr($type) ?>"
							   class="btn"
							   name="content"
							   data-filter="content"
							   value="<?= esc_attr($type) ?>"
							<?= $checked ?>>
						<label for="filter-<?= esc_attr($type) ?>" title="Show <?= $label ?>" class="row">
							<?= jvbIcon($feedContent[$type]['icon']) ?>
							<span class="screen-reader-text"><?= $label ?></span>
						</label>
						<?php
						$labels['filter-'.$type] = $label;
					endforeach;
					?>
					<ul class="filter-label">
						<?php
						$i = 0;
						foreach ($labels as $id => $label) {
							$active = $i === 0 ? ' class="active"' : '';
							?>
							<li id="<?= $id ?>"<?= $active ?>>
								<?= $label ?>
							</li>
							<?php
							$i++;
						}
						?>
					</ul>
			<?php } ?>


					<?php if (Features::forSite()->has('favourites') && is_user_logged_in()) : ?>
						<input type="checkbox" id="favourites" class="btn" name="favourites" value="on"
							   data-filter="favourites">
						<label for="favourites" title="Show Favourites" class="row">
							<?= jvbIcon('heart').jvbIcon('heart', ['style' => 'fill']) ?>
							<span class="screen-reader-text">Show Favourites Only</span>
						</label>
					<?php endif; ?>
				<?php if ($hasMany) { ?>
				</summary>
				<?php } ?>

					<div class="filters">
						<div class="filter-group row start">
							<span class="label">FILTER BY:</span>

							<?php
							$checker = Checker::getInstance();
							foreach ($this->config['taxonomies'] as $tax) :
								$taxConfig = JVB_TAXONOMY[$tax] ?? null;
								if (!$taxConfig) continue;

								$contentForTax = $checker->getContentForTaxonomy($tax);
								$hidden = empty($contentForTax) ? ' hidden' : '';

								$taxSelector = new TaxonomySelector(
									'feed-'.$tax,
									$tax,
									[
										'icon'			=> $taxConfig['icon']??'logo-triangle',
										'update' 		=> '.selected-items-section .selected-items',
										'types' 		=> $contentForTax,
										'autocomplete'	=> false,
										'hidden' 		=> $hidden,
										'output'		=> 'minimal'
									]
								);
								echo $taxSelector->render();
							endforeach;
							?>
						</div>
						<div class="selected-items-section">
							<div class="selected-items row"></div>
							<div class="filter-actions row">
								<?= jvbRenderToggleTextField('match', 'Match', 'Filters', 'ALL', 'ANY', false, ['filter' => 'match']) ?>
								<button type="button" class="clear-filters row">
									<?= jvbIcon('x') ?>
									Clear All Filters
								</button>
							</div>
						</div>
					</div>

					<div class="row btw nowrap">
						<div class="order-by filter-group row start w-full">
							<span class="label">ORDER BY:</span>
							<?php
							//TODO: Get content types that can be sorted alphabetically
							?>
							<input type="radio" id="order-title" class="btn" name="orderby" value="title" data-for="artist,shop" data-filter="orderby" hidden>
							<label for="order-title" title="Order by Name" class="row">
								<?= jvbIcon('alphabetical') ?>
								<span class="label">Name</span>
							</label>

							<input type="radio" id="order-date" class="btn" name="orderby" value="date" data-filter="orderby" checked>
							<label for="order-date" title="Order by Date" class="row">
								<?= jvbIcon('calendar', ['title' => 'Date']) ?>
								<span class="label">Date</span>
							</label>

							<input type="radio" id="order-random" class="btn" name="orderby" value="random" data-filter="orderby">
							<label for="order-random" title="Random Order" class="row">
								<?= jvbIcon('shuffle') ?>
								<span class="label">Random</span>
							</label>
						</div>

						<div class="order-direction filter-group row start w-full" data-for-order="date,title">
							<span class="label">ORDER:</span>
							<input type="radio" id="order-desc" class="btn" name="order" value="desc" data-filter="order" checked>
							<label for="order-desc" title="Sort Descending (A-Z, 1-10)" class="row">
								<?= jvbIcon('sort-descending') ?>
								<span class="label" >DESC (A-Z)</span>
							</label>

							<input type="radio" id="order-asc" class="btn" name="order" value="asc" data-filter="order">
							<label for="order-asc" title="Sort Ascending (Z-A, 10-1)" class="row">
								<?= jvbIcon('sort-ascending') ?>
								<span class="label" >ASC (Z-A)</span>
							</label>
						</div>
					</div>
			<?php if ($hasMany) { ?>
				</details>
			<?php } ?>
		</form>
		<?php
	}

	protected function renderGrid(): void
	{
		?>
		<div class="item-grid">
			<?php
			$total = count($this->config['content']) - 1;
			for ($i = 1; $i <= 36; $i++) {
				$rand = rand(0, $total);
				$config = Features::getConfig($this->config['content'][$rand]);
				$icon = jvbIcon($config['icon']??'logo-triangle');
				?>
				<div class="placeholder"><?=apply_filters('jvbFeedPlaceholder', $icon) ?></div>
				<?php
			}
			?>
		</div>
		<?php
	}

	protected function renderLoader(): void
	{
		?>
		<button type="button" class="load-more">
			<?= jvbIcon('arrow-elbow-left-down') ?>
			Show Me More
			<?= jvbIcon('arrow-elbow-right-down') ?>
		</button>

		<?= jvbLoadingScreen() ?>
		<?php
		if (array_key_exists('is_gallery', $this->config)) {
			jvbRenderGallery();
		}
	}

	protected function renderTemplates(): void
	{
		echo '<template class="feed-item">'.apply_filters('jvbFeedItem', '<details class="item feed" data-umami-event="view_feed">
            <summary class="row btw">
                <span class="handle">DETAILS</span>
                <button class="favourite" title="Add to favourites" onclick="toggleFavourite(this)">
                    '.jvbIcon('heart')
				.jvbIcon('heart', ['style'=>'fill']).'
                </button>
                <div class="feed-images">
                    <a>
                        <img width="300px" height="300px" loading="lazy" decoding="async">
                    </a>
                </div>
            </summary>

            <div class="item-info">
                <h3><a></a></h3>
                <div class="item">
                    <span class="label"></span>
                    <a></a>
                    <p></p>
                </div>
                <div class="item-list">
                    <span class="label"></span>
                        <ul>
                            <li>
                                <a></a>
                            </li>
                        </ul>
                    </div>
                </div>
            </div>
        </details>', $this->config).'</template>';

		echo '<template class="emptyState">'.apply_filters('jvbFeedEmptyState', '<div class="feed-empty-state">
                <h3>NOTHING HERE...</h3>
                <p>Try tweaking those filters a bit.</p>
                <p>Edmonton\'s got talent - let\'s find it.</p>
            </div>', $this->config). '</template>';
		echo '<template class="placeholderTemplate"><div class="placeholder">'.apply_filters('jvbFeedPlaceholder', jvbIcon('logo-triangle')).'</div></template>';
	}

	/**
	 * Get feed content using Features instead of get_option
	 * Returns array of slug => config for types that show in feed
	 */
	public function getFeedContent(): array
	{
		return JVB()->routes('feed')->getFeedTypesConfig();
	}
}