<?php
/*
 * Plugin Name:       AION Chatbot
 * Plugin URI:        https://wordpress.org/plugins/aion-chatbot/
 * Description:       A chatbot plugin.
 * Version:           1.0.1
 * Requires at least: 5.2
 * Requires PHP:      7.2
 * Author:            AION
 * Author URI:        https://aionchat.com/
 * License:           GPL v2 or later
 * License URI:       https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain:       aion-chatbot
*/

/**
 * install and uninstall aion_chatbot plugin
 **/
if (!defined('ABSPATH')) exit; // Exit if accessed directly

register_activation_hook(__file__, 'aion_chatbot_admin_activation');
register_deactivation_hook(__file__, 'aion_chatbot_admin_deactivation');

function aion_chatbot_admin_activation()
{
    aion_chatbot_get_admin_options(false);
}
function aion_chatbot_admin_deactivation()
{
    delete_option('aion_chatbot_options');
}
/**
 * add new menu into WordPress admin menu
 **/
add_action('admin_menu', 'aion_chatbot_admin_menu_hook');
function aion_chatbot_admin_menu_hook()
{
    if (function_exists('add_options_page')) {
        add_menu_page(
            'AION Chatbot',
            'AION Chatbot',
            'manage_options',
            'aion_chatbot',
            'aion_chatbot_admin_menu',
            'dashicons-admin-comments', //36 34
        );
    }
}

/**
 * Init plugin
 **/
add_action('admin_init', 'aion_chatbot_options_init');
function aion_chatbot_options_init()
{
    register_setting('aion_chatbot', 'aion_chatbot_options', 'aion_chatbot_validate_options');
}

/** 
 * Sanitize and validate input. Accepts an array, return a sanitized array. 
 **/
function aion_chatbot_validate_options($input)
{
    if (isset($input['account_created'])) {
        $sanitary_values['account_created'] = intval($input['account_created']);
    }
    if (isset($input['agent_id'])) {
        $sanitary_values['agent_id'] = sanitize_text_field($input['agent_id']);
    }
    if (isset($input['chat_icon'])) {
        $sanitary_values['chat_icon'] = sanitize_text_field($input['chat_icon']);
    }
    if (isset($input['intent'])) {
        $sanitary_values['intent'] = sanitize_text_field($input['intent']);
    }
    if (isset($input['chat_title'])) {
        $sanitary_values['chat_title'] = sanitize_text_field($input['chat_title']);
    }
    if (isset($input['bot_message_color'])) {
        $sanitary_values['bot_message_color'] = sanitize_text_field($input['bot_message_color']);
    }
    if (isset($input['button_titlebar_color'])) {
        $sanitary_values['button_titlebar_color'] = sanitize_text_field($input['button_titlebar_color']);
    }
    if (isset($input['chat_background_color'])) {
        $sanitary_values['chat_background_color'] = sanitize_text_field($input['chat_background_color']);
    }
    if (isset($input['font_color'])) {
        $sanitary_values['font_color'] = sanitize_text_field($input['font_color']);
    }
    if (isset($input['user_message_color'])) {
        $sanitary_values['user_message_color'] = sanitize_text_field($input['user_message_color']);
    }
    if (isset($input['send_icon_color'])) {
        $sanitary_values['send_icon_color'] = sanitize_text_field($input['send_icon_color']);
    }
    return $sanitary_values;
}

/**
 * admin options, set default values if empty
 **/
function aion_chatbot_get_admin_options($return = true)
{
    $options = array(
        'agent_id' => '',
        'chat_icon' => '',
        'intent' => '',
        'chat_title' => '',
        'bot_message_color' => '',
        'button_titlebar_color' => '',
        'chat_background_color' => '',
        'font_color' => '',
        'user_message_color' => '',
        'send_icon_color' => '',
    );
    $current_options = get_option('aion_chatbot_options');
    if (!empty($current_options)) {
        foreach ($current_options as $key => $option)
            $options[$key] = $option;
    }
    update_option('aion_chatbot_options', $options);
    if ($return) return $options;
}

/**
 * handle admin form
 **/
function aion_chatbot_admin_menu()
{
    require_once plugin_dir_path(__FILE__) . 'templates/question.php';
    require_once plugin_dir_path(__FILE__) . 'templates/guest.php';
    require_once plugin_dir_path(__FILE__) . 'templates/user.php';
}

/**
 * inject the HTML code in frontend
 **/
function aion_chatbot_insert()
{
    $options = aion_chatbot_get_admin_options();
    echo '<input type="hidden" id="aion_chatbot_data" valid="true"  
            agent_id="' . $options['agent_id'] . '" 
            chat_icon="' . $options['chat_icon'] . '" 
            intent="' . $options['intent'] . '" 
            chat_title="' . $options['chat_title'] . '" 
            bot_message_color="' . $options['bot_message_color'] . '" 
            button_titlebar_color="' . $options['button_titlebar_color'] . '" 
            chat_background_color="' . $options['chat_background_color'] . '" 
            font_color="' . $options['font_color'] . '" 
            user_message_color="' . $options['user_message_color'] . '" 
            send_icon_color="' . $options['send_icon_color'] . '""/>';
}

add_action('wp_head', 'aion_chatbot_insert');

/**
 * enqueue scripts and styles
 **/
function aion_chatbot_enqueue()
{
    wp_enqueue_script('aion_chatbot-js', plugins_url('/assets/main.js', __FILE__));
    wp_enqueue_style('aion_chatbot', plugins_url('/assets/style.css', __FILE__));

    wp_register_script('dialogflow-console', 'https://www.gstatic.com/dialogflow-console/fast/messenger/bootstrap.js', null, null, true);
    wp_enqueue_script('dialogflow-console');
}
function aion_chatbot_enqueue_admin()
{
    if ($_GET["page"] == "aion_chatbot") {
        wp_enqueue_script('aion_chatbot-admin-js', plugins_url('/assets/admin/main.js', __FILE__));
        wp_enqueue_style('aion_chatbot-admin', plugins_url('/assets/admin/style.css', __FILE__));
    }
}

add_action('wp_enqueue_scripts', 'aion_chatbot_enqueue');
add_action('admin_enqueue_scripts', 'aion_chatbot_enqueue_admin');


/**
 * remove default footer message
 **/
function aion_chatbot_remove_footer_admin()
{
    echo '';
}

add_filter('admin_footer_text', 'aion_chatbot_remove_footer_admin');

/**
 * remove default WP version from footer 
 **/
function aion_chatbot_remove_footer_wp_version_admin()
{
    remove_filter('update_footer', 'core_update_footer');
}

add_action('admin_menu', 'aion_chatbot_remove_footer_wp_version_admin');

/**
 * add settings link in plugins page
 **/
function aion_chatbot_add_plugin_page_settings_link($links)
{
    $links[] = '<a href="' .
        admin_url('options-general.php?page=aion_chatbot') .
        '">' . __('Settings') . '</a>';
    return $links;
}
add_filter('plugin_action_links_' . plugin_basename(__FILE__), 'aion_chatbot_add_plugin_page_settings_link');