<?php
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Front-end "+ Add Video" — lets store admins/shop managers upload a video
 * and tag products directly from the shoppable feed (shortcode, Elementor
 * widget, or Gutenberg block), without going into wp-admin. Only visible to
 * users who can `manage_woocommerce` (Shop Manager + Administrator) — never
 * shown to regular shoppers.
 */
class ADDOSHVI_Frontend_Editor {

	private static $instance = null;

	public static function instance() {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	private function __construct() {
		add_action( 'wp_ajax_addoshvi_frontend_save_video', array( $this, 'ajax_save_video' ) );
	}

	/**
	 * Capability gate for the whole feature — store admin/staff only.
	 */
	public static function current_user_can_edit() {
		return current_user_can( 'manage_woocommerce' ) || current_user_can( 'manage_options' );
	}

	public function ajax_save_video() {
		check_ajax_referer( 'addoshvi_frontend_editor', 'nonce' );

		if ( ! self::current_user_can_edit() ) {
			wp_send_json_error( array( 'message' => __( 'You do not have permission to add videos.', 'addonn-shoppable-video' ) ) );
		}

		$video_attachment_id = isset( $_POST['video_attachment_id'] ) ? absint( $_POST['video_attachment_id'] ) : 0;
		if ( ! $video_attachment_id || 0 !== strpos( (string) get_post_mime_type( $video_attachment_id ), 'video/' ) ) {
			wp_send_json_error( array( 'message' => __( 'Please choose a valid video file.', 'addonn-shoppable-video' ) ) );
		}

		$product_ids = isset( $_POST['product_ids'] ) ? array_map( 'absint', (array) $_POST['product_ids'] ) : array();
		$product_ids = array_filter( $product_ids );
		if ( empty( $product_ids ) ) {
			wp_send_json_error( array( 'message' => __( 'Tag at least one product.', 'addonn-shoppable-video' ) ) );
		}
		// Only keep IDs that are real, purchasable products.
		$valid_product_ids = array();
		foreach ( $product_ids as $pid ) {
			$product = wc_get_product( $pid );
			if ( $product && $product->is_purchasable() ) {
				$valid_product_ids[] = $pid;
			}
		}
		if ( empty( $valid_product_ids ) ) {
			wp_send_json_error( array( 'message' => __( 'None of the tagged products are valid/purchasable.', 'addonn-shoppable-video' ) ) );
		}

		$title = isset( $_POST['title'] ) ? sanitize_text_field( wp_unslash( $_POST['title'] ) ) : '';
		if ( '' === $title ) {
			$attachment_title = get_the_title( $video_attachment_id );
			$title             = $attachment_title ? $attachment_title : sprintf(
				/* translators: %s: current date and time, used as a fallback title for an untitled video. */
				__( 'Video — %s', 'addonn-shoppable-video' ),
				current_time( 'Y-m-d H:i' )
			);
		}

		$cover_attachment_id = isset( $_POST['cover_attachment_id'] ) ? absint( $_POST['cover_attachment_id'] ) : 0;
		if ( $cover_attachment_id && 0 !== strpos( (string) get_post_mime_type( $cover_attachment_id ), 'image/' ) ) {
			$cover_attachment_id = 0; // Ignore anything that isn't actually an image.
		}

		$whatsapp_enabled = ! empty( $_POST['whatsapp_enabled'] );
		// Digits only — this gets concatenated straight into a wa.me/{number}
		// URL, and a stray space/dash/"+" would break that link.
		$whatsapp_number  = isset( $_POST['whatsapp_number'] ) ? preg_replace( '/\D+/', '', sanitize_text_field( wp_unslash( $_POST['whatsapp_number'] ) ) ) : '';

		$post_id = wp_insert_post( array(
			'post_type'   => ADDOSHVI_POST_TYPE,
			'post_status' => 'publish',
			'post_title'  => $title,
		), true );

		if ( is_wp_error( $post_id ) ) {
			wp_send_json_error( array( 'message' => $post_id->get_error_message() ) );
		}

		update_post_meta( $post_id, '_addoshvi_video_attachment_id', $video_attachment_id );
		update_post_meta( $post_id, '_addoshvi_products', $valid_product_ids );
		update_post_meta( $post_id, '_addoshvi_whatsapp_enabled', $whatsapp_enabled ? '1' : '' );
		update_post_meta( $post_id, '_addoshvi_whatsapp_number', $whatsapp_number );

		if ( $cover_attachment_id ) {
			set_post_thumbnail( $post_id, $cover_attachment_id );
		}

		$video_data = ADDOSHVI_Shortcode::get_video_data( $post_id );
		if ( ! $video_data ) {
			// Shouldn't happen given the validation above, but fail safe.
			wp_send_json_error( array( 'message' => __( 'Video was saved but could not be rendered — please check it in Shoppable Videos.', 'addonn-shoppable-video' ) ) );
		}

		ob_start();
		$video = $video_data; // Expected variable name inside the template.
		include ADDOSHVI_PLUGIN_DIR . 'templates/video-card.php';
		$card_html = ob_get_clean();

		wp_send_json_success( array(
			'message'   => __( 'Video added!', 'addonn-shoppable-video' ),
			'video_id'  => $post_id,
			'card_html' => $card_html,
		) );
	}
}