<?php

/**
 * Utility class for fetching Zillow listings.
 *
 * @since      1.0.0
 * @package    Listings_For_Zillow_Free
 * @subpackage Listings_For_Zillow_Free/public/includes
 */

class LFZW_Fr_Listings {

    /**
     * Client profile URL for fetching the listings.
     *
     * @since 1.0.0
     * @var string
     */
    private $profile_url;

    /**
     * Unique encodedZuid for the client profile.
     *
     * @since 1.0.0
     * @var string
     */
    private $encoded_zuid;

    /**
     * Scrapper instance to fetch data
     *
     * @since 1.0.0
     * @var string
     */
    private $scrapper;

    /**
     * Constructor to initialize the profile URL and fetch encodedZuid.
     *
     * @since 1.0.0
     * @param string $profile_url Client profile URL for fetching listings.
     */
    public function __construct( $profile_url ) {

        require_once LFZW_Fr_Main::$plugin_dir . 'includes/core/class-lfzw-fr-scrapper.php';

        $this->profile_url = $profile_url;
        $this->scrapper = new LFZW_Fr_Scrapper();
        $this->encoded_zuid = get_option('lfzw_encoded_zuid');
    }

    /**
     * Listings getter method
     * Fetches and formats all listings.
     *
     * @since 1.0.0
     * @return array All listings
     */
    public function get_listings() {

        $listings = $this->fetch_active_listings();
        if(!empty($listings)) {
            return $this->format_listings($listings);
        } else {
            throw new \Exception( "Listings not found.", 404 );
        }
    }

    /**
     * Utility method for imagee.
     *
     * @since 1.0.0
     * @return string url
     */
    function convert_zillow_image_url($url, $newSuffix = 'cc_ft_576') {
        
        $parts = explode('-', $url);
        if (count($parts) > 1) {
            $base = $parts[0];
            return $base . '-' . $newSuffix . '.webp';
        }
        return $url;
    }

    /**
     * This method converts all listings data into a fixed format accepted by listings template ensuring template remains independent of fetched data and logic
     *
     * @since 1.0.0
     * @param array $listings
     * @return array All formatted listings
     */
    private function format_listings( $listings ) {

        $formatted_listings = array();

        foreach ( $listings as $listing ) {

            $list_id = isset( $listing['zpid'] ) ? sanitize_text_field( $listing['zpid'] ) : '';

            $list_ttl = $list_adrs = $list_city = $list_state = $list_zip = '';

            if ( isset( $listing['address'] ) ) {
                $address = $listing['address'];
                $list_ttl   = isset( $address['line1'] ) ? sanitize_text_field( $address['line1'] ) : '';
                $list_adrs  = isset( $address['line2'] ) ? sanitize_text_field( $address['line2'] ) : '';
                $list_city  = isset( $address['city'] ) ? sanitize_text_field( $address['city'] ) : '';
                $list_state = isset( $address['stateOrProvince'] ) ? sanitize_text_field( $address['stateOrProvince'] ) : '';
                $list_zip   = isset( $address['postalCode'] ) ? sanitize_text_field( $address['postalCode'] ) : '';
            }

            $list_beds  = isset( $listing['bedrooms'] ) ? absint( $listing['bedrooms'] ) : '';
            $list_baths = isset( $listing['bathrooms'] ) ? absint( $listing['bathrooms'] ) : '';
            $list_img   = isset( $listing['primary_photo_url'] ) ? esc_url_raw( $this->convert_zillow_image_url( $listing['primary_photo_url'] ) ) : '';
            $list_lat   = isset( $listing['latitude'] ) ? floatval( $listing['latitude'] ) : '';
            $list_long  = isset( $listing['longitude'] ) ? floatval( $listing['longitude'] ) : '';
            $list_url = isset( $listing['listing_url'] ) ? $listing['listing_url'] : '';
            if ( $list_url && strpos( $list_url, 'http' ) !== 0 ) {
                $list_url = 'https://www.zillow.com' . $list_url;
            }
            $list_url = esc_url_raw( $list_url );

            $list_price = isset( $listing['price'] ) ? sanitize_text_field( $listing['price'] ) : '';

            $data = array(
                'list_id'  => $list_id,
                'title'    => $list_ttl,
                'address'  => $list_adrs,
                'city'     => $list_city,
                'state'    => $list_state,
                'zip'      => $list_zip,
                'beds'     => $list_beds,
                'baths'    => $list_baths,
                'image'    => $list_img,
                'lat'      => $list_lat,
                'long'     => $list_long,
                'list_url' => $list_url,
                'price'    => $list_price,
            );

            $formatted_listings[] = $data;
        }

        return $formatted_listings;
    }

    /**
     * Fetch and return active listings for the specified Zillow user.
     *
     * @since 1.0.0
     * @return void
     */
    private function fetch_active_listings( ) {

        if(!$this->encoded_zuid) {
            throw new \Exception( "Error getting the listings. Please contact the site owner." );
        }

        $page         = 1;
        $all_listings = array();

        $listings_url = "https://private-zillow.p.rapidapi.com/agent/for_sale?encodedZuid={$this->encoded_zuid}&page={$page}";

        try {
            $response = $this->scrapper->make_request( $listings_url );
            $data     = json_decode( $response, true );

            $page_listings = isset( $data['forSaleListings'] ) && is_array( $data['forSaleListings'] ) ? $data['forSaleListings'] : [];

            if ( count( $page_listings ) > 0 ) {
                $all_listings = array_merge( $all_listings, $page_listings );

                if (count($all_listings) > 3) {
                    $all_listings = array_slice($all_listings, 0, 3);
                }
            }

        } catch ( Exception $e ) {
            error_log( "Error fetching page $page: " . $e->getMessage() );
        }

        return $all_listings;
    }
}