importer_example.php

add_action('template_redirect', function() {
	if (!isset($_GET['import_ciso_workshops'])) {
		return;
	}

	global $wpdb;
	$data_to_import = json_decode(file_get_contents(dirname(__FILE__) . '/import_data/Programs/ciso-workshops.json'), TRUE);

	if (empty($data_to_import)) {
		echo 'Invalid file';
		exit;
	}

	foreach ($data_to_import as $index => $data_item) {
		$post_type = 'crb_program';
		$posts_exists = crb_post_exists('crb_program', $data_item['name']);
		if ($posts_exists) {
			echo 'Post ' . $data_item['name'] . ' already exists  <h3>' . $posts_exists . '</h3><br>';
			continue;
		}

		if ($data_item['date']) {
			//[date format] 2016-08-24 13:36:01
			$post_timestamp = strtotime($data_item['date']);
			$post_date = date('Y-m-d', $post_timestamp);
		}

		$args = array(
			'post_content' => $data_item['single_data']['content'],
			'post_title' => $data_item['name'],
			'post_excerpt' => $data_item['description'],
			'post_date' => $post_date,
			'post_status' => 'publish',
			'post_type' => 'crb_program',
		);

		$post_id =  wp_insert_post($args);

		if (!is_wp_error($post_id)) {
			// Import Topics
			$topic_terms = [];
			$tags_terms = [];
			$topics = $data_item['single_data']['topics'];

			if ($topics) {
				foreach ($topics as $topic_name) {
					$topic_term = get_term_by('name', htmlspecialchars($topic_name), 'crb_topic');

					if ($topic_term) {
						$topic_terms[] = $topic_term->term_id;
					}
				}
			}

			if (!empty($topic_terms)) {
				wp_set_post_terms($post_id, $topic_terms, 'crb_topic');
			}

			// Import thumbnail
		    $upload_dir = wp_upload_dir();

		    $image_data = file_get_contents($data_item['image_original']);
		    $has_original = true;
			if (is_wp_error($image_data)) {
				echo 'Original image does not exists';
				$image_data = file_get_contents($data_item['image']);
				$has_original = false;
			}

			if ($has_original) {
			    $filename = basename($data_item['image_original']);
			} else {
			    $filename = basename($data_item['image']);
			}

		    if(wp_mkdir_p($upload_dir['path'])) {
			    $file = $upload_dir['path'] . '/' . $filename;
		    }   else {
				$file = $upload_dir['basedir'] . '/' . $filename;
		    }
		    	
		    file_put_contents($file, $image_data);

		    $wp_filetype = wp_check_filetype($filename, null );
		    $attachment = array(
		        'post_mime_type' => $wp_filetype['type'],
		        'post_title' => sanitize_file_name($filename),
		        'post_content' => '',
		        'post_status' => 'inherit'
		    );

		    $attach_id = wp_insert_attachment( $attachment, $file, $post_id );

		    require_once(ABSPATH . 'wp-admin/includes/image.php');

		    $attach_data = wp_generate_attachment_metadata( $attach_id, $file );
		    $res1= wp_update_attachment_metadata( $attach_id, $attach_data );
		    $res2= set_post_thumbnail( $post_id, $attach_id );

		    // Update post meta 
		    if ($data_item['date']) {
		    	update_post_meta($post_id, '_crb_program_date', $post_date);
		    }

		    if ($data_item['link']) {
		    	update_post_meta($post_id, '_crb_program_old_link', $data_item['link']);
		    }

		    // Attach PDFs
		    $pdfs = $data_item['pdfs'];

		    if ($pdfs) {
		    	foreach ($pdfs as $num => $pdf) {
		    		$pdf_data = file_get_contents($pdf['link']);

		    		$pdf_filename = basename($pdf['link']);

				    if(wp_mkdir_p($upload_dir['path'])) {
					    $pdf_file = $upload_dir['path'] . '/' . $pdf_filename;
				    }   else {
						$pdf_file = $upload_dir['basedir'] . '/' . $pdf_filename;
				    }
				    	
				    file_put_contents($pdf_file, $pdf_data);

				    $wp_filetype = wp_check_filetype($pdf_filename, null );
				    $pdf_attachment = array(
				        'post_mime_type' => $wp_filetype['type'],
				        'post_title' => sanitize_file_name($pdf_filename),
				        'post_content' => '',
				        'post_status' => 'inherit'
				    );

				    $pdf_attach_id = wp_insert_attachment( $pdf_attachment, $pdf_file, $post_id );
				    
				    update_post_meta($post_id, '_crb_program_pdfs_-_file_' . $num, $pdf_attach_id  );
				    update_post_meta($post_id, '_crb_program_pdfs_-_label_' . $num, $pdf['text'] );
		    	}
		    }

		    // Top Intro Image  intro_image_original

		    $top_image_data = file_get_contents($data_item['single_data']['intro_image_original']);

		    $top_image_filename = basename($data_item['single_data']['intro_image_original']);

		    if(wp_mkdir_p($upload_dir['path'])) {
			    $top_file = $upload_dir['path'] . '/' . $top_image_filename;
		    }   else {
				$top_file = $upload_dir['basedir'] . '/' . $top_image_filename;
		    }
		    	
		    file_put_contents($top_file, $top_image_data);

		    $wp_filetype = wp_check_filetype($top_image_filename, null );
		    $top_attachment = array(
		        'post_mime_type' => $wp_filetype['type'],
		        'post_title' => sanitize_file_name($top_image_filename),
		        'post_content' => '',
		        'post_status' => 'inherit'
		    );

		    $top_attach_id = wp_insert_attachment( $top_attachment, $top_file, $post_id );
		    $top_attach_data = wp_generate_attachment_metadata( $top_attach_id, $top_file );
		    $top_res1= wp_update_attachment_metadata( $top_attach_id, $top_attach_data );

		    if ($top_attach_id) {
		    	update_post_meta($post_id, '_crb_program_top_image', $top_attach_id);
		    }

		    // Attach Images To Post
		    $additional_images = $data_item['single_data']['images'];

		    if ($additional_images) {
		    	$additional_images_array = array();

		    	foreach ($additional_images as $num => $additional_image) {
		    		$additional_image_data = file_get_contents($additional_image);

		    		$additional_filename = basename($additional_image);

				    if(wp_mkdir_p($upload_dir['path'])) {
					    $additional_file = $upload_dir['path'] . '/' . $additional_filename;
				    }   else {
						$additional_file = $upload_dir['basedir'] . '/' . $additional_filename;
				    }
				    	
				    file_put_contents($additional_file, $additional_image_data);

				    $wp_filetype = wp_check_filetype($additional_filename, null );
				    $additional_attachment = array(
				        'post_mime_type' => $wp_filetype['type'],
				        'post_title' => sanitize_file_name($additional_filename),
				        'post_content' => '',
				        'post_status' => 'inherit'
				    );

				    $additional_attach_id = wp_insert_attachment( $additional_attachment, $additional_file, $post_id );
				    $additional_attach_data = wp_generate_attachment_metadata( $additional_attach_id, $additional_file );
				    $additional_res1= wp_update_attachment_metadata( $additional_attach_id, $additional_attach_data );
				    if ($additional_attach_id) {
				    	$new_image_url = wp_get_attachment_url($additional_attach_id);
				    	$additional_images_array[$additional_image] = $new_image_url;
				    }
		    	}

		    	if ($additional_images_array) {
			    	$fixer = new CDS_Content_Fixer($data_item['single_data']['content'], $additional_images_array);
			    	$post_body_with_local_imgs = $fixer->fix_img_srcs();

			    	wp_update_post(array(
			    		'ID' => $post_id,
			    		'post_content' => $post_body_with_local_imgs
			    	));
		    	}
		    	
		    }

		    echo ($index + 1) . ' Successfully improrted post: ' . $data_item['name'] . '<br>'; 
		} else {
			echo 'Can not import post ' . $data['name'] . '<br>';
		}
	}
	exit;
});