<?php
/**
 * Plugin Name: AfriDoctor Messenger
 * Description: Adds the AfriDoctor messenger (patient/practitioner chat bubble) to your website. No code to write: just paste your AfriDoctor practitioner ID in the settings.
 * Version: 1.0.0
 * Author: AfriDoctor
 * Author URI: https://afridoctor.com
 * License: GPLv2 or later
 * Text Domain: afridoctor-messenger
 */

if (!defined('ABSPATH')) {
    exit; // Accès direct interdit.
}

define('AFRIDOCTOR_MESSENGER_OPTION_PROVIDER_ID', 'afridoctor_messenger_provider_id');
define('AFRIDOCTOR_MESSENGER_OPTION_HOST', 'afridoctor_messenger_host');
define('AFRIDOCTOR_MESSENGER_DEFAULT_HOST', 'https://afridoctor.com');

/**
 * `esc_url_raw()` seule ne suffit pas : si le praticien tape le domaine sans protocole (ex.
 * « afridoctor.com »), WordPress le fait suivre silencieusement par `http://` plutôt que
 * `https://`. On force explicitement le protocole par défaut avant de sanitizer, pour ne
 * jamais dépendre de ce comportement.
 */
function afridoctor_messenger_sanitize_host($value) {
    $value = trim((string) $value);
    if ($value === '') {
        return AFRIDOCTOR_MESSENGER_DEFAULT_HOST;
    }
    if (!preg_match('#^https?://#i', $value)) {
        $value = 'https://' . $value;
    }
    return esc_url_raw($value);
}

/**
 * Enregistre et charge le script d'intégration via l'API standard WordPress
 * (wp_enqueue_script), uniquement si un identifiant praticien est renseigné : ne jamais
 * injecter un extrait cassé après activation du plugin. Pour que le widget s'affiche
 * réellement, le domaine de ce site doit aussi être renseigné côté AfriDoctor (espace
 * praticien, section messagerie) — la vraie protection contre une installation non
 * autorisée se fait là, pas ici.
 */
function afridoctor_messenger_enqueue_widget() {
    $provider_id = trim((string) get_option(AFRIDOCTOR_MESSENGER_OPTION_PROVIDER_ID, ''));
    if ($provider_id === '') {
        return;
    }

    $host = trim((string) get_option(AFRIDOCTOR_MESSENGER_OPTION_HOST, AFRIDOCTOR_MESSENGER_DEFAULT_HOST));
    if ($host === '') {
        $host = AFRIDOCTOR_MESSENGER_DEFAULT_HOST;
    }

    wp_register_script(
        'afridoctor-messenger-widget',
        esc_url(rtrim($host, '/') . '/messenger-widget.js'),
        [],
        '1.0.0',
        ['in_footer' => true, 'strategy' => 'async']
    );
    wp_add_inline_script(
        'afridoctor-messenger-widget',
        'window.AfridoctorMessenger = ' . wp_json_encode([
            'providerId' => $provider_id,
            'host' => $host,
        ]) . ';',
        'before'
    );
    wp_enqueue_script('afridoctor-messenger-widget');
}
add_action('wp_enqueue_scripts', 'afridoctor_messenger_enqueue_widget');

/**
 * Page de réglages : un seul champ obligatoire (identifiant praticien), un champ domaine
 * avancé pré-rempli et replié par défaut pour madadoc.com / mauridoc.com.
 */
function afridoctor_messenger_register_settings() {
    register_setting('afridoctor_messenger', AFRIDOCTOR_MESSENGER_OPTION_PROVIDER_ID, [
        'type' => 'string',
        'sanitize_callback' => 'sanitize_text_field',
        'default' => '',
    ]);
    register_setting('afridoctor_messenger', AFRIDOCTOR_MESSENGER_OPTION_HOST, [
        'type' => 'string',
        'sanitize_callback' => 'afridoctor_messenger_sanitize_host',
        'default' => AFRIDOCTOR_MESSENGER_DEFAULT_HOST,
    ]);
}
add_action('admin_init', 'afridoctor_messenger_register_settings');

function afridoctor_messenger_add_settings_page() {
    add_options_page(
        __('AfriDoctor Messenger', 'afridoctor-messenger'),
        __('AfriDoctor Messenger', 'afridoctor-messenger'),
        'manage_options',
        'afridoctor-messenger',
        'afridoctor_messenger_render_settings_page'
    );
}
add_action('admin_menu', 'afridoctor_messenger_add_settings_page');

function afridoctor_messenger_render_settings_page() {
    if (!current_user_can('manage_options')) {
        return;
    }

    $provider_id = get_option(AFRIDOCTOR_MESSENGER_OPTION_PROVIDER_ID, '');
    $host = get_option(AFRIDOCTOR_MESSENGER_OPTION_HOST, AFRIDOCTOR_MESSENGER_DEFAULT_HOST);
    ?>
    <div class="wrap">
        <h1><?php esc_html_e('AfriDoctor Messenger', 'afridoctor-messenger'); ?></h1>
        <p>
            <?php esc_html_e(
                'Collez ci-dessous votre identifiant praticien AfriDoctor (disponible dans votre espace AfriDoctor, section messagerie). Vous devez aussi y renseigner le domaine de ce site pour que la bulle de chat apparaisse.',
                'afridoctor-messenger'
            ); ?>
        </p>
        <form method="post" action="options.php">
            <?php settings_fields('afridoctor_messenger'); ?>
            <table class="form-table" role="presentation">
                <tr>
                    <th scope="row">
                        <label for="afridoctor_messenger_provider_id">
                            <?php esc_html_e('Identifiant praticien', 'afridoctor-messenger'); ?>
                        </label>
                    </th>
                    <td>
                        <input
                            type="text"
                            id="afridoctor_messenger_provider_id"
                            name="<?php echo esc_attr(AFRIDOCTOR_MESSENGER_OPTION_PROVIDER_ID); ?>"
                            value="<?php echo esc_attr($provider_id); ?>"
                            class="regular-text"
                            required
                        />
                    </td>
                </tr>
            </table>
            <details style="margin: 16px 0;">
                <summary><?php esc_html_e('Options avancées (domaine AfriDoctor)', 'afridoctor-messenger'); ?></summary>
                <table class="form-table" role="presentation">
                    <tr>
                        <th scope="row">
                            <label for="afridoctor_messenger_host">
                                <?php esc_html_e('Domaine AfriDoctor', 'afridoctor-messenger'); ?>
                            </label>
                        </th>
                        <td>
                            <input
                                type="url"
                                id="afridoctor_messenger_host"
                                name="<?php echo esc_attr(AFRIDOCTOR_MESSENGER_OPTION_HOST); ?>"
                                value="<?php echo esc_attr($host); ?>"
                                class="regular-text"
                            />
                            <p class="description">
                                <?php esc_html_e(
                                    'À changer uniquement si votre compte est sur madadoc.com ou mauridoc.com.',
                                    'afridoctor-messenger'
                                ); ?>
                            </p>
                        </td>
                    </tr>
                </table>
            </details>
            <?php submit_button(); ?>
        </form>
    </div>
    <?php
}