<?php

/**
 * This class defines the AJAX handler methods for backend settings
 * 
 * @since      1.0.0
 *
 * @package    Listings_For_Zillow_Free
 * @subpackage Listings_For_Zillow_Free/admin/includes
 */
class LFZW_Fr_Admin_Ajax_Handler {

    public function __construct() {

        add_action('wp_ajax_lfzw_fr_save_profile_data', [$this, 'save_profile_data']); 
        add_action('wp_ajax_lfzw_fr_save_listings', [$this, 'save_listings']); 
        add_action('wp_ajax_lfzw_fr_save_listing_details', [$this, 'save_listing_details']);
        add_action('wp_ajax_lfzw_fr_search_agents', [$this, 'search_agents']);
        add_action('wp_ajax_lfzw_fr_select_agent', [$this, 'select_agent']);

        require_once LFZW_Fr_Main::$plugin_dir . 'includes/core/class-lfzw-fr-db-persistor.php';
        require_once LFZW_Fr_Main::$plugin_dir . 'includes/core/class-lfzw-fr-agent-search.php';
		
    }

    private function validate_request() {
        $res_array = array();
		if (
            !isset($_POST) ||
            empty($_POST) ||
            !wp_verify_nonce($_POST['lfzw_nonce'], 'lfzw_fr_ajax_nonce') ||
            !is_user_logged_in() ||
            !current_user_can('manage_options')
        ) {
            header('HTTP/1.1 400 Bad Request');
            $res_array['error'] = 'error - Access denied or invalid POST values';
            echo json_encode($res_array);
            exit;
        }
    }

    function save_profile_data() {

        $res_array = array();
		$this->validate_request();

        try {

            $url = '';
            if(isset($_POST['url'])) {
                // Not sanitize_text_field(): the agent profile link can contain "%XX" sequences
                // (e.g. "Alex%20Antigua") which sanitize_text_field() strips out.
                $url = esc_url_raw(wp_unslash($_POST['url']));
            }

            if(!$url) {
                $res_array['error'] = 'Please fill required fields!';
                echo json_encode($res_array);
                exit;
            }
            
            $last_char = substr($url, -1);
            if($last_char == '/'){
                $url = substr($url, 0, -1);
            }
            update_option('lfzw_fr_listings_url', $url);

            LFZW_Fr_DB_Persistor::save_profile_data();
            $res_array['success'] = true;

        } catch(Exception $e) {
            $res_array['error'] = $e->getMessage();
        }

        echo json_encode($res_array);
        exit;
        
    }

    function save_listings(){

		$res_array = array();
		$this->validate_request();

		try {
            $all_listings = LFZW_Fr_DB_Persistor::save_listings();
            $res_array['all_listings'] = $all_listings;
            $res_array['total_listings'] = count($all_listings);
            $res_array['success'] = true;
        } catch(Exception $e) {
            $res_array['error'] = $e->getMessage();
        }

		echo json_encode($res_array);
        exit;

	}

    function save_listing_details(){

		$res_array = array();
		$this->validate_request();

		try {

            $list_id = '';
            if(isset($_POST['list_id'])) {
                $list_id = sanitize_text_field($_POST['list_id']);
            }

            if(!$list_id) {
                $res_array['error'] = 'Listing ID is missing!';
                echo json_encode($res_array);
                exit;
            }

            $all_listings = LFZW_Fr_DB_Persistor::save_listing_details($list_id);
            $res_array['success'] = true;
        } catch(Exception $e) {
            $res_array['error'] = $e->getMessage();
        }

		echo json_encode($res_array);
        exit;

	}

    function search_agents() {

        $res_array = array();
        $this->validate_request();

        try {

            $agent_name = '';
            if (isset($_POST['agent_name'])) {
                $agent_name = sanitize_text_field($_POST['agent_name']);
            }

            if (!$agent_name) {
                $res_array['error'] = 'Please fill required fields!';
                echo json_encode($res_array);
                exit;
            }

            $agent_search = new LFZW_Fr_Agent_Search();
            $agents = $agent_search->search($agent_name);

            $res_array['agents'] = $agents;
            $res_array['success'] = true;

        } catch(Exception $e) {
            $res_array['error'] = $e->getMessage();
        }

        echo json_encode($res_array);
        exit;

    }

    function select_agent() {

        $res_array = array();
        $this->validate_request();

        try {

            $encoded_zuid = isset($_POST['encoded_zuid']) ? sanitize_text_field($_POST['encoded_zuid']) : '';
            if (!$encoded_zuid) {
                $res_array['error'] = 'Selected agent is missing a Zillow ID!';
                echo json_encode($res_array);
                exit;
            }

            $name      = isset($_POST['name']) ? sanitize_text_field($_POST['name']) : '';
            $link      = isset($_POST['link']) ? esc_url_raw(wp_unslash($_POST['link'])) : '';
            $image_url = isset($_POST['image_url']) ? esc_url_raw(wp_unslash($_POST['image_url'])) : '';

            update_option('lfzw_encoded_zuid', $encoded_zuid);

            if ($link) {
                $last_char = substr($link, -1);
                if ($last_char == '/') {
                    $link = substr($link, 0, -1);
                }
                update_option('lfzw_fr_listings_url', $link);
            }

            update_option('lfzw_fr_selected_agent', array(
                'name'      => $name,
                'image_url' => $image_url,
            ));

            $res_array['success'] = true;

        } catch(Exception $e) {
            $res_array['error'] = $e->getMessage();
        }

        echo json_encode($res_array);
        exit;

    }

}