Plugin to format WordPress posts created byt the DsgnWrks Instagram Importer

dsgnwrks-instagram-importer-hooks.php

<?php
/*
Plugin Name: DsgnWrks Instagram Importer Hooks
Plugin URI: http://dsgnwrks.pro/plugins/dsgnwrks-instagram-importer
Description: Improvements to the Instagram Importer
Author URI: http://www.nfriedly.com
Author: nfriedly
Version: 0.0.0
*/

// initially based on https://gist.github.com/jtsternberg/b7c3b5371c6f639693b8f086859ad129

function format_instagram_post_remove_initial_image( $content ) {
	return preg_replace( '/<p><img[^>]+></p>/', '', $content, 1 );
}

function format_instagram_post_insert_video( $content ) {
	$content = format_instagram_post_remove_initial_image( $content );
	
	$video_src = get_post_meta( get_the_ID(), 'instagram_video_url_standard_resolution', true );
	if ( $video_src ) {
		$content = '[video src="' . esc_url_raw( $video_src ) . '" /]' . $content ;
	}
	return $content;
}

function format_instagram_post_insert_carousel( $content ) {
	$content = format_instagram_post_remove_initial_image( $content );
	
	$carousel = '';
	$post_id = get_the_ID();
	
	$videos = get_post_meta( $post_id, 'instagram_video_url_standard_resolution', false );
	foreach ( $videos as $video_src ) {
		$carousel .= '[video src="' . esc_url_raw( $video_src ) . '" /]';
	}
	
	$featured_image_id = get_post_thumbnail_id( $post_id );
	$pictures = get_post_meta( $post_id, 'instagram_image_id', false );
	foreach ( $pictures as $attach_id ) {
		if ( $attach_id !== $featured_image_id ) { // because my template already displays the featured image on the post page
			$img_element = wp_get_attachment_image( $attach_id, 'full', false, array(
				'class' => 'insta-image'
			) );
			$carousel .= '<p>' . $img_element . '</p>';
		}
	}

	$content = $carousel . $content;
	return $content;
}

function format_instagram_post( $content ) {
	$type = get_post_meta( get_the_ID(), 'instagram_type', true );
	if ( $type == 'video' ) {
		return format_instagram_post_insert_video( $content );
	}
	if ( $type == 'carousel' ) {
		return format_instagram_post_insert_carousel( $content );
	}
	if ( $type == 'image' ) {
		// the template I'm using automatically shows this as the featured image
		// you may want to disable this if you have a different template
		return format_instagram_post_remove_initial_image( $content );
	}
}
add_filter( 'the_content', 'format_instagram_post', 10, 1 );