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Edit File: ai-document-gapgpt.php

<?php
/**
 * Plugin Name: AI Document System - GapGPT
 * Description: پلاگین مدیریت مدارک و اعتبارسنجی کاربران با ChatGPT (GapGPT API) و OTP ایمیل
 * Version: 1.0
 * Author: Reza SA
 */

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

class AI_Document_GapGPT {

private $option_name = 'ai_gapgpt_api_key';
    private $table_name;

public function __construct() {
        global $wpdb;
        $this->table_name = $wpdb->prefix . 'ai_document_gapgpt';
        register_activation_hook(__FILE__, array($this, 'activate_plugin'));
        add_action('admin_menu', array($this, 'admin_menu'));
        add_shortcode('ai_document_form', array($this, 'document_form_shortcode'));
        add_action('init', array($this, 'handle_form_submission'));
    }

public function activate_plugin() {
        global $wpdb;
        $charset_collate = $wpdb->get_charset_collate();
        $sql = "CREATE TABLE {$this->table_name} (
            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
            first_name VARCHAR(255),
            last_name VARCHAR(255),
            email VARCHAR(255),
            mobile VARCHAR(50),
            files LONGTEXT,
            otp_code VARCHAR(10),
            verified TINYINT(1) DEFAULT 0,
            submitted_at DATETIME DEFAULT CURRENT_TIMESTAMP,
            PRIMARY KEY (id)
        ) $charset_collate;";
        require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
        dbDelta($sql);
    }

public function admin_menu() {
        add_menu_page('AI Document System','AI Documents','manage_options','ai-document-gapgpt',array($this,'admin_page'),'dashicons-media-document',80);
    }

public function admin_page() {
        if (isset($_POST['ai_gapgpt_api_key'])) {
            update_option($this->option_name, sanitize_text_field($_POST['ai_gapgpt_api_key']));
            echo '<div class="updated"><p>API Key saved.</p></div>';
        }
        $api_key = get_option($this->option_name, '');
        echo '<div class="wrap"><h1>AI Document System - GapGPT Settings</h1>'; 
        echo '<form method="post" enctype="multipart/form-data">';
        echo '<label>GapGPT API Key:</label> <input type="password" name="ai_gapgpt_api_key" value="'.esc_attr($api_key).'" style="width:400px;">';
        echo '<p><input type="submit" value="Save" class="button button-primary"></p></form></div>';
    }

public function document_form_shortcode() {
        ob_start();
        echo '<form method="post" enctype="multipart/form-data">';
        echo '<h3>Personal Information</h3>'; 
        echo '<input type="text" name="first_name" placeholder="First Name" required><br>'; 
        echo '<input type="text" name="last_name" placeholder="Last Name" required><br>'; 
        echo '<input type="email" name="email" placeholder="Email" required><br>'; 
        echo '<input type="text" name="mobile" placeholder="Mobile Number" required><br>'; 
        echo '<h3>Upload Documents</h3>'; 
        echo '<label>Biometric Photo (JPG 50-100KB)</label><input type="file" name="biometric_photo" accept=".jpg" required><br>'; 
        echo '<label>Passport First Page (JPG <100KB)</label><input type="file" name="passport_page" accept=".jpg" required><br>'; 
        echo '<label>Degree Certificate (JPG <150KB)</label><input type="file" name="degree_cert" accept=".jpg" required><br>'; 
        echo '<label>CV (PDF/DOC <200KB)</label><input type="file" name="cv_file" accept=".pdf,.doc,.docx" required><br>'; 
        echo '<input type="submit" name="submit_ai_doc" value="Submit and Verify">';
        echo '</form>';
        return ob_get_clean();
    }

public function handle_form_submission() {
        if (!isset($_POST['submit_ai_doc'])) return;
        if (!isset($_FILES)) return;

$first_name = sanitize_text_field($_POST['first_name']);
        $last_name = sanitize_text_field($_POST['last_name']);
        $email = sanitize_email($_POST['email']);
        $mobile = sanitize_text_field($_POST['mobile']);

$files_data = array();
        $upload_dir = wp_upload_dir();
        $base_dir = $upload_dir['basedir'] . '/ai_documents/';
        if (!file_exists($base_dir)) mkdir($base_dir, 0755, true);

foreach ($_FILES as $key => $file) {
            if ($file['error'] === UPLOAD_ERR_OK) {
                $file_name = time().'_'.sanitize_file_name($file['name']);
                move_uploaded_file($file['tmp_name'], $base_dir . $file_name);
                $files_data[$key] = $upload_dir['baseurl'].'/ai_documents/'.$file_name;
            }
        }

$otp_code = rand(100000, 999999);

global $wpdb;
        $wpdb->insert($this->table_name,array('first_name'=>$first_name,'last_name'=>$last_name,'email'=>$email,'mobile'=>$mobile,'files'=>maybe_serialize($files_data),'otp_code'=>$otp_code,'verified'=>0));

wp_mail($email, 'Verification Code', "Your OTP Code: $otp_code");

$api_key = get_option($this->option_name, '');
        if (empty($api_key)) return;

$gap_endpoint = 'https://gapgpt.app/api/v1/gpt4o/chat';
        $headers = array('Authorization' => 'Bearer ' . $api_key,'Content-Type' => 'application/json');

$file_list = implode(", ", $files_data);
        $payload = array('model'=>'gpt4o','messages'=>array(array('role'=>'user','content'=>'Check the uploaded documents: '.$file_list)),'temperature'=>0);

$response = wp_remote_post($gap_endpoint, array('headers'=>$headers,'body'=>wp_json_encode($payload),'timeout'=>60));

if(is_wp_error($response)) return;

$body = wp_remote_retrieve_body($response);
        $result = json_decode($body,true);

echo '<h3>AI Verification Result:</h3><pre>'.esc_html(print_r($result,true)).'</pre>';
        echo '<p>An OTP code has been sent to your email. Please enter it to complete the registration.</p>';
        exit;
    }
}

new AI_Document_GapGPT();
?>

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