<?php
namespace ExclusiveAddons\Elementor;

use Elementor\TemplateLibrary\Source_Base;

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

class Template_Library_Source extends Source_Base {

	/**
	 * Template library data cache
	 */
	const LIBRARY_CACHE_ID = 'exad_library_cache';

	/**
	 * Template info api url
	 */
	const TEMPLATE_LIBRARY_API_INFO = 'https://sites.exclusiveaddons.com/wp-json/exad/v1/library-config';

	/**
	 * Template data api url
	 */
	const TEMPLATE_LIBRARY_ITEMS_API = 'https://sites.exclusiveaddons.com/wp-json/exad/v1/library/';

	public function get_id() {
		return 'exclusive-addons-library';
	}

	public function get_title() {
		return __( 'Template Library', 'exclusive-addons-elementor' );
	}

	public function register_data() {}

	public function save_item( $template_data ) {
		return new \WP_Error( 'invalid_request', 'Cannot save template to Template Library' );
	}

	public function update_item( $new_data ) {
		return new \WP_Error( 'invalid_request', 'Cannot update template to Template Library' );
	}

	public function delete_template( $template_id ) {
		return new \WP_Error( 'invalid_request', 'Cannot delete template from Template Library' );
	}

	public function export_template( $template_id ) {
		return new \WP_Error( 'invalid_request', 'Cannot export template from Template Library' );
	}

	public function get_items( $args = [] ) {
		$library_data = self::get_library_data();

		$templates = [];

		if ( ! empty( $library_data['templates'] ) ) {
			foreach ( $library_data['templates'] as $template_data ) {
				$templates[] = $this->prepare_template( $template_data );
			}
		}

		return $templates;
	}

	public function get_categories() {
		$library_data = self::get_library_data();

		return ( ! empty( $library_data['categories'] ) ? $library_data['categories'] : [] );
	}

	public function get_type_category() {
		$library_data = self::get_library_data();

		return ( ! empty( $library_data['type_category'] ) ? $library_data['type_category'] : [] );
	}

	/**
	 * Prepare template items to match model
	 *
	 * @param array $template_data
	 * @return array
	 */
	private function prepare_template( array $template_data ) {
		return [
			'template_id' => $template_data['id'],
			'title'       => $template_data['title'],
			'type'        => $template_data['type'],
			'thumbnail'   => $template_data['thumbnail'],
			'category'    => $template_data['category'],
			'isPro'       => $template_data['is_pro'],
			'url'         => $template_data['url'],
		];
	}

	/**
	 * Get library data from remote source and cache
	 *
	 * @param boolean $force_update
	 * @return array
	 */
	private static function request_library_data( $force_update = false ) {
		$data = get_option( self::LIBRARY_CACHE_ID );

		if ( $force_update || false === $data ) {
			$timeout = ( $force_update ) ? 25 : 8;

			$response = wp_remote_get( self::TEMPLATE_LIBRARY_API_INFO, [
				'timeout' => $timeout,
			] );

			if ( is_wp_error( $response ) || 200 !== (int) wp_remote_retrieve_response_code( $response ) ) {
				update_option( self::LIBRARY_CACHE_ID, [] );
				return false;
			}

			$data = json_decode( wp_remote_retrieve_body( $response ), true );

			if ( empty( $data ) || ! is_array( $data ) ) {
				update_option( self::LIBRARY_CACHE_ID, [] );
				return false;
			}

			update_option( self::LIBRARY_CACHE_ID, $data, 'no' );
		}

		return $data;
	}

	/**
	 * Get library data
	 *
	 * @param boolean $force_update
	 * @return array
	 */
	public static function get_library_data( $force_update = false ) {
		self::request_library_data( $force_update );

		$data = get_option( self::LIBRARY_CACHE_ID );

		if ( empty( $data ) ) {
			return [];
		}

		return $data;
	}

	/**
	 * Get remote template.
	 *
	 * Retrieve a single remote template from Elementor.com servers.
	 *
	 * @param int $template_id The template ID.
	 *
	 * @return array Remote template.
	 */
	public function get_item( $template_id ) {
		$templates = $this->get_items();

		return $templates[ $template_id ];
	}

	public static function request_template_data( $template_id ) {
		if ( empty( $template_id ) ) {
			return;
		}

		$body = [
			'home_url' => trailingslashit( home_url() ),
			'version' => EXAD_PLUGIN_VERSION,
		];

		$response = wp_remote_get(
			self::TEMPLATE_LIBRARY_ITEMS_API . $template_id,
			[
				'body' => $body,
				'timeout' => 25
			]
		);

		return wp_remote_retrieve_body( $response );
	}

	/**
	 * Get remote template data.
	 *
	 * Retrieve the data of a single remote template
	 *
	 * @return array|\WP_Error Remote Template data.
	 */
	public function get_data( array $args, $context = 'display' ) {
		$data = self::request_template_data( $args['template_id'] );

		$data = json_decode( $data, true );

		if ( empty( $data ) || empty( $data['content'] ) ) {
			throw new \Exception( __( 'Template does not have any content', 'exclusive-addons-elementor' ) );
		}

		$data['content'] = $this->replace_elements_ids( $data['content'] );
		$data['content'] = $this->process_export_import_content( $data['content'], 'on_import' );

		$post_id = $args['editor_post_id'];
		$document = \Elementor\Plugin::instance()->documents->get( $post_id );

		if ( $document ) {
			$data['content'] = $document->get_elements_raw_data( $data['content'], true );
		}

		return $data;
	}
}
