<?php
/**
 * @package CleverOgre
 * @subpackage OgreIssuu
 * @version 0.1.0
 * @since 0.1.0
 */

namespace OgreIssuu;

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

use stdClass;
use Exception;
use lasselehtinen\Issuu\Issuu;
use lasselehtinen\Issuu\Publications;
use OgreIssuu\Api\Publications as ApiPublications;
use OgreIssuu\Api\User;

class Api {
    use Singleton;

    private Issuu $client;

    public function __construct() {
        if (!Settings::exists('token')) return;
        $this->client = new Issuu(Settings::get('token'));
    }

    public function get_user():?stdClass {
        if (!isset($this->client)) return null;

        $user = new User($this->client);
        try {
            return $user->getUserProfile();
        } catch (Exception $e) {
            error_log($e->getMessage());
            return null;
        }
    }

    public function get_publications(array $args = []):?stdClass {
        if (!isset($this->client)) return null;

        $args = wp_parse_args($args, [
            'size' => 10,
            'page' => 1,
            'state' => 'ALL',
            'q' => '',
        ]);

        $publications = new Publications($this->client);
        try {
            return $publications->list($args['size'], $args['page'], $args['state'], $args['q']);
        } catch (Exception $e) {
            error_log($e->getMessage());
            return null;
        }
    }

    public function get_publication(string $slug):?stdClass {
        if (!isset($this->client)) return null;

        $publications = new Publications($this->client);
        try {
            return $publications->getPublicationBySlug($slug);
        } catch (Exception $e) {
            error_log($e->getMessage());
            return null;
        }
    }

    public function get_publication_assets(string $slug, array $args = []):?stdClass {
        if (!isset($this->client)) return null;

        $publications = new ApiPublications($this->client);
        try {
            return $publications->getPublicationAssetsBySlug($slug, $args);
        } catch (Exception $e) {
            error_log($e->getMessage());
            return null;
        }
    }

    public function get_publication_embed(string $slug, array $args = []):?stdClass {
        if (!isset($this->client)) return null;

        $publications = new ApiPublications($this->client);
        try {
            return $publications->getPublicationEmbedBySlug($slug, $args);
        } catch (Exception $e) {
            error_log($e->getMessage());
            return null;
        }
    }

    public function get_publication_by_public_location(string $url, array $args = []):?stdClass {
        if (!isset($this->client) || empty($url)) return null;

        if (strpos($url, 'https://') !== 0) {
            $user = $this->get_user();
            if (is_null($user) || !property_exists($user, 'username') || empty($user->username)) return null;
            $url = "https://issuu.com/$user->username/docs/$url";
        }

        // Remove query params
        $url = explode('?', $url)[0];

        $page = 1;
        while (true) {
            $publications = $this->get_publications(array_merge($args, [
                'page' => $page++,
            ]));
            if (is_null($publications) || !$publications->count || empty($publications->results)) break;
            foreach ($publications->results as $publication) {
                if (!property_exists($publication, 'publicLocation') || empty($publication->publicLocation)) continue;
                if ($publication->publicLocation == $url) return $publication;
            }
        }
        return null;
    }

}