<?php

require_once(AWPCP_DIR . '/classes/helpers/page.php');


/**
 * @since  2.1.4
 */
class AWPCP_SearchAdsPage extends AWPCP_Page {

    public $messages = array();

    public function __construct($page='awpcp-search-ads', $title=null) {
        parent::__construct($page, is_null($title) ? __('Search Ads', 'AWPCP') : $title);

        add_filter('awpcp-display-ads-before-list', array($this, 'show_return_link'));
    }

    public function get_current_action($default='searchads') {
        return awpcp_request_param('a', $default);
    }

    public function url($params=array()) {
        $url = awpcp_get_page_url('search-ads-page-name');
        return add_query_arg($params, $url);
    }

    public function show_return_link($content) {
        if (isset($this->return_link) && !empty($this->return_link)) {
            return $content . $this->return_link;
        }
        return $content;
    }

    public function dispatch() {
        wp_enqueue_script('awpcp-page-search-ads');
        wp_enqueue_script('awpcp-extra-fields');

        $awpcp = awpcp();
        $awpcp->js->localize( 'page-search-ads', array(
            'keywordphrase' => __( 'You did not enter a keyword or phrase to search for. You must at the very least provide a keyword or phrase to search for.', 'AWPCP' )
        ) );

        return $this->_dispatch();
    }

    protected function _dispatch($default=null) {
        $action = $this->get_current_action();

        switch ($action) {
            case 'dosearch':
                return $this->do_search_step();
            case 'searchads':
            default:
                return $this->search_step();
        }
    }

    protected function get_posted_data() {
        $data = array(
            'query' => awpcp_request_param('keywordphrase'),
            'category' => awpcp_request_param('searchcategory'),
            'name' => awpcp_request_param('searchname'),
            'min_price' => awpcp_parse_money( awpcp_request_param( 'searchpricemin' ) ),
            'max_price' => awpcp_parse_money( awpcp_request_param( 'searchpricemax' ) ),
            'country' => awpcp_request_param('searchcountry'),
            'state' => awpcp_request_param('searchstate'),
            'city' => awpcp_request_param('searchcity'),
            'county' => awpcp_request_param('searchcountyvillage')
        );

        $data = apply_filters( 'awpcp-get-posted-data', $data, 'search' );

        return $data;
    }

    protected function validate_posted_data($data, &$errors=array()) {
        $filtered = array_filter($data);

        if (empty($filtered)) {
            $errors[] = __("You did not enter a keyword or phrase to search for. You must at the very least provide a keyword or phrase to search for.", "AWPCP");
        }

        if (!empty($data['query']) && strlen($data['query']) < 3) {
            $errors['query'] = __("You have entered a keyword that is too short to search on. Search keywords must be at least 3 letters in length. Please try another term.", "AWPCP");
        }

        if (!empty($data['min_price']) && !is_numeric($data['min_price'])) {
            $errors['min_price'] = __("You have entered an invalid minimum price. Make sure your price contains numbers only. Please do not include currency symbols.", "AWPCP");
        }

        if (!empty($data['max_price']) && !is_numeric($data['max_price'])) {
            $errors['max_price'] = __("You have entered an invalid maximum price. Make sure your price contains numbers only. Please do not include currency symbols.", "AWPCP");
        }

        return empty($errors);
    }

    protected function search_step() {
        $this->messages[] = __("Use the form below to conduct a broad or narrow search. For a broader search enter fewer parameters. For a narrower search enter as many parameters as needed to limit your search to a specific criteria.", "AWPCP");
        return $this->search_form($this->get_posted_data());
    }

    protected function search_form($form, $errors=array()) {
        global $hasregionsmodule, $hasextrafieldsmodule;

        $ui['module-region-fields'] = $hasregionsmodule;
        $ui['module-extra-fields'] = $hasextrafieldsmodule;
        $ui['posted-by-field'] = get_awpcp_option('displaypostedbyfield');
        $ui['price-field'] = get_awpcp_option('displaypricefield');

        $messages = $this->messages;
        $hidden = array('a' => 'dosearch');

        $page = $this;
        $template = AWPCP_DIR . '/frontend/templates/page-search-ads.tpl.php';
        $params = compact('page', 'ui', 'form', 'hidden', 'messages', 'errors');

        return $this->render($template, $params);
    }

    protected function do_search_step() {
        global $wpdb, $hasextrafieldsmodule;

        $errors = array();
        $form = $this->get_posted_data();

        if (!$this->validate_posted_data($form, $errors)) {
            return $this->search_form($form, $errors);
        }


        // build a link to hold all query parameters
        $params = array_merge(stripslashes_deep($_REQUEST), array('a' => 'searchads'));
        $href = add_query_arg(urlencode_deep($params), awpcp_current_url());
        $this->return_link = '<div class="awpcp-return-to-search-link"><a href="' . esc_attr($href) . '">' . __('Return to Search', 'AWPCP') . '</a></div>';


        $conditions = array('disabled = 0');

        if (!empty($form['query'])) {
            $sql = 'MATCH (ad_title, ad_details) AGAINST (%s IN BOOLEAN MODE)';
            $conditions[] = $wpdb->prepare($sql, $form['query']);
        }

        if (!empty($form['name'])) {
            $conditions[] = $wpdb->prepare('ad_contact_name = %s', $form['name']);
        }

        if (!empty($form['category'])) {
            $sql = '(ad_category_id = %1$d OR ad_category_parent_id = %1$d)';
            $conditions[] = $wpdb->prepare($sql, $form['category']);
        }

        if (!empty($form['min_price'])) {
            $price = $form['min_price'] * 100;
            $conditions[] = $wpdb->prepare('ad_item_price >= %d', $price);
        }

        if (!empty($form['max_price'])) {
            $price = $form['max_price'] * 100;
            $conditions[] = $wpdb->prepare('ad_item_price <= %d', $price);
        }

        $fields = array(
            'city' => 'ad_city',
            'county' => 'ad_county_village',
            'state' => 'ad_state',
            'country' => 'ad_country'
        );

        foreach ($fields as $field => $column) {
            if (!empty($form[$field])) {
                if (is_array($form[$field])) {
                    $conditions[] = $wpdb->prepare("{$column} IN (%s)", join(',', $cities));
                } else {
                    $conditions[] = sprintf("{$column} LIKE '%%%s%%'", $wpdb->escape($form[$field]));
                }
            }
        }

        $where = join(' AND ', $conditions);

        // Is the extra fields module present with the required search builder function?
        // If so call the "where clause" builder function
        if ($hasextrafieldsmodule == 1 && function_exists('build_extra_fields_search_where')) {
            $where .=  build_extra_fields_search_where();
        }

        $order = get_awpcp_option( 'search-results-order' );

        return awpcp_display_ads( $where, '', '', $order, 'ad' );
    }
}