<?php
/**
 * Template library.
 *
 * @package ShapeOptions
 */

defined( 'ABSPATH' ) || exit;

/**
 * Ready-made option groups. Every card previews the exact fields it will
 * create; installing makes a DRAFT group (via the builder's sanitizer) so
 * store owners review pricing before publishing.
 */
if ( ! class_exists( 'Shapeoptions_Templates' ) ) :

class Shapeoptions_Templates {

	/**
	 * Admin builder — reused for sanitizing installed fields.
	 *
	 * @var Shapeoptions_Admin
	 */
	private $admin;

	/**
	 * Hook up.
	 *
	 * @param Shapeoptions_Admin $admin Admin builder instance.
	 */
	public function __construct( $admin ) {
		$this->admin = $admin;

		add_action( 'admin_menu', array( $this, 'menu' ), 25 );
		add_action( 'admin_post_shapeoptions_install_template', array( $this, 'install' ) );
		add_action( 'admin_enqueue_scripts', array( $this, 'assets' ) );
	}

	/**
	 * Load the template library's CSS on its own page only.
	 *
	 * @param string $hook Current admin page hook suffix.
	 */
	public function assets( $hook ) {
		if ( 'shapeoptions_group_page_shapeoptions-templates' !== $hook ) {
			return;
		}

		wp_enqueue_style(
			'shapeoptions-admin-templates',
			SHAPEOPTIONS_URL . 'assets/css/shapeoptions-admin-templates.css',
			array(),
			shapeoptions_asset_version( SHAPEOPTIONS_PATH . 'assets/css/shapeoptions-admin-templates.css', SHAPEOPTIONS_VERSION )
		);
	}

	/**
	 * Register the library page.
	 */
	public function menu() {
		add_submenu_page(
			'edit.php?post_type=shapeoptions_group',
			__( 'ShapeOptions Templates', 'shapeoptions' ),
			__( 'Templates', 'shapeoptions' ),
			'manage_woocommerce',
			'shapeoptions-templates',
			array( $this, 'render_page' )
		);
	}

	/**
	 * All templates. Add-ons register more through the filter below.
	 *
	 * @return array<string,array{title:string,description:string,fields:array}>
	 */
	public function get_templates() {
		$templates = array(
			'gift_wrap_basic' => array(
				'title'       => __( 'Gift wrap (basic)', 'shapeoptions' ),
				'description' => __( 'A gift-wrap toggle with an optional note — the classic upsell.', 'shapeoptions' ),
				'fields'      => array(
					array( 'type' => 'switch', 'label' => __( 'Gift wrap this item', 'shapeoptions' ), 'key' => 'gift_wrap', 'price' => 5 ),
					array( 'type' => 'textarea', 'label' => __( 'Gift note (optional)', 'shapeoptions' ), 'key' => 'gift_note', 'maxlength' => 200 ),
				),
			),
			'personalization' => array(
				'title'       => __( 'Personalization (basic)', 'shapeoptions' ),
				'description' => __( 'A name/text line plus a style choice with per-choice fees.', 'shapeoptions' ),
				'fields'      => array(
					array( 'type' => 'text', 'label' => __( 'Personalization text', 'shapeoptions' ), 'key' => 'perso_text', 'required' => 1, 'price' => 4, 'maxlength' => 25, 'description' => __( 'Exactly as it should appear on the product.', 'shapeoptions' ) ),
					array( 'type' => 'radio', 'label' => __( 'Style', 'shapeoptions' ), 'key' => 'perso_style', 'choices' => array(
						array( 'label' => __( 'Printed', 'shapeoptions' ), 'value' => 'printed', 'price' => 0 ),
						array( 'label' => __( 'Embroidered', 'shapeoptions' ), 'value' => 'embroidered', 'price' => 6 ),
					) ),
				),
			),
			'delivery_notes'  => array(
				'title'       => __( 'Delivery preferences', 'shapeoptions' ),
				'description' => __( 'Preferred delivery date, time window and courier instructions.', 'shapeoptions' ),
				'fields'      => array(
					array( 'type' => 'date', 'label' => __( 'Preferred delivery date', 'shapeoptions' ), 'key' => 'delivery_date' ),
					array( 'type' => 'select', 'label' => __( 'Time window', 'shapeoptions' ), 'key' => 'delivery_window', 'choices' => array(
						array( 'label' => __( 'Anytime', 'shapeoptions' ), 'value' => 'any', 'price' => 0 ),
						array( 'label' => __( 'Morning (9–12)', 'shapeoptions' ), 'value' => 'morning', 'price' => 3 ),
						array( 'label' => __( 'Evening (17–21)', 'shapeoptions' ), 'value' => 'evening', 'price' => 3 ),
					) ),
					array( 'type' => 'textarea', 'label' => __( 'Instructions for the courier', 'shapeoptions' ), 'key' => 'delivery_notes', 'maxlength' => 300 ),
				),
			),
		);

		/**
		 * Register extra templates.
		 *
		 * @param array $templates slug => template definition.
		 */
		return apply_filters( 'shapeoptions/templates', $templates );
	}

	/**
	 * Render the library grid with per-template field previews.
	 */
	public function render_page() {
		$installed = isset( $_GET['shapeoptions_installed'] ) ? absint( $_GET['shapeoptions_installed'] ) : 0; // phpcs:ignore WordPress.Security.NonceVerification.Recommended
		$labels    = shapeoptions()->fields->get_labels();
		?>
		<div class="wrap">
			<h1><?php esc_html_e( 'ShapeOptions — Template Library', 'shapeoptions' ); ?></h1>
			<?php if ( $installed ) : ?>
				<div class="notice notice-success shapeoptions-notice"><p>
					<?php esc_html_e( 'Template installed as a draft group.', 'shapeoptions' ); ?>
					<a href="<?php echo esc_url( get_edit_post_link( $installed ) ); ?>"><?php esc_html_e( 'Review & publish it', 'shapeoptions' ); ?></a>
				</p></div>
			<?php endif; ?>
			<p><?php esc_html_e( 'Each template creates a draft option group you can review, adjust and publish. The list below each card shows exactly which fields you get.', 'shapeoptions' ); ?></p>

			<div class="shapeoptions-tpl-grid">
				<?php foreach ( $this->get_templates() as $slug => $template ) : ?>
					<div class="shapeoptions-tpl">
						<h2><?php echo esc_html( $template['title'] ); ?></h2>
						<p class="shapeoptions-tpl__desc"><?php echo esc_html( $template['description'] ); ?></p>

						<ul class="shapeoptions-tpl__fields">
							<?php foreach ( $template['fields'] as $field ) : ?>
								<li>
									<span>
										<?php echo esc_html( $field['label'] ?? '' ); ?>
										<?php if ( ! empty( $field['required'] ) ) : ?><abbr title="<?php esc_attr_e( 'required', 'shapeoptions' ); ?>">*</abbr><?php endif; ?>
										<?php if ( ! empty( $field['price'] ) ) : ?>
											<em>(<?php echo wp_kses_post( wc_price( $field['price'] ) ); ?>)</em>
										<?php endif; ?>
									</span>
									<span class="shapeoptions-tpl__type"><?php echo esc_html( $labels[ $field['type'] ?? '' ] ?? $field['type'] ); ?></span>
								</li>
							<?php endforeach; ?>
						</ul>

						<form method="post" action="<?php echo esc_url( admin_url( 'admin-post.php' ) ); ?>">
							<input type="hidden" name="action" value="shapeoptions_install_template" />
							<input type="hidden" name="template" value="<?php echo esc_attr( $slug ); ?>" />
							<?php wp_nonce_field( 'shapeoptions_install_template' ); ?>
							<?php submit_button( __( 'Install', 'shapeoptions' ), 'primary', 'submit', false ); ?>
						</form>
					</div>
				<?php endforeach; ?>
			</div>
		</div>
		<?php
	}

	/**
	 * Install a template as a draft group via the builder's sanitizer.
	 */
	public function install() {
		check_admin_referer( 'shapeoptions_install_template' );
		if ( ! current_user_can( 'manage_woocommerce' ) ) {
			wp_die( esc_html__( 'You are not allowed to install templates.', 'shapeoptions' ) );
		}

		$slug      = sanitize_key( wp_unslash( $_POST['template'] ?? '' ) );
		$templates = $this->get_templates();
		if ( ! isset( $templates[ $slug ] ) ) {
			wp_die( esc_html__( 'Unknown template.', 'shapeoptions' ) );
		}

		$post_id = wp_insert_post(
			array(
				'post_type'   => 'shapeoptions_group',
				'post_title'  => $templates[ $slug ]['title'],
				'post_status' => 'draft',
			)
		);

		if ( is_wp_error( $post_id ) || ! $post_id ) {
			wp_die( esc_html__( 'The template could not be installed. Please try again.', 'shapeoptions' ) );
		}

		$clean = array();
		$seen  = array();
		foreach ( $templates[ $slug ]['fields'] as $raw ) {
			$field = $this->admin->sanitize_field( $raw, $seen );
			if ( $field ) {
				$seen[]  = $field['key'];
				$clean[] = $field;
			}
		}
		update_post_meta( $post_id, '_shapeoptions_fields', $clean );
		update_post_meta( $post_id, '_shapeoptions_conditions', array( 'type' => 'all', 'ids' => array() ) );
		update_post_meta( $post_id, '_shapeoptions_placement', 'before' );

		wp_safe_redirect( add_query_arg( 'shapeoptions_installed', $post_id, admin_url( 'edit.php?post_type=shapeoptions_group&page=shapeoptions-templates' ) ) );
		exit;
	}
}

endif;