<?php
// /sms/notify_rdv.php
declare(strict_types=1);

namespace Sms;

require_once __DIR__ . '/wa_client.php';

function notify_rdv(string $to, string $prenomNom, string $dateHeureDDMMYYYY_HHMM): array
{
    // Charge config & templates
    $cfg       = require __DIR__ . '/config.php';
    $templates = require __DIR__ . '/templates.php';

    $tplName = 'notification_rdv';
    $tpl     = $templates[$tplName] ?? null;
    if (!$tpl) {
        throw new \RuntimeException("Template {$tplName} non déclaré dans /sms/templates.php");
    }

    // Valide le format date/heure attendu "01/01/2025 12:00"
    if (!preg_match('/^\d{2}\/\d{2}\/\d{4}\s\d{2}:\d{2}$/', $dateHeureDDMMYYYY_HHMM)) {
        throw new \InvalidArgumentException('Format date/heure invalide. Attendu: "01/01/2025 12:00"');
    }

    // Vérifie le compte de variables attendu dans le BODY
    $expected = (int)($tpl['components']['body_params'] ?? 0);
    $actual   = 2;
    if ($expected !== $actual) {
        throw new \RuntimeException("Le template {$tplName} attend {$expected} paramètres BODY, {$actual} fournis.");
    }

    $lang = $tpl['language'] ?: ($cfg['default_lang'] ?? 'ru');

    $client = new WaClient($cfg);
    // {{1}} = prénom nom ; {{2}} = date-heure
    return $client->sendTemplate($tplName, $lang, $to, [$prenomNom, $dateHeureDDMMYYYY_HHMM]);
}
function notify_rdv_en_attente(string $to, string $prenomNom, string $dateHeureDDMMYYYY_HHMM, int $rdvId): array
{
    // Config & templates
    $cfg       = is_file(__DIR__.'/config.php') ? require __DIR__.'/config.php' : [
        'phone_number_id' => getenv('WHATSAPP_PHONE_NUMBER_ID') ?: '',
        'access_token'    => getenv('WHATSAPP_TOKEN') ?: '',
        'default_lang'    => 'ru',
        'timeout'         => 20,
    ];
    if (($cfg['phone_number_id'] ?? '') === '' || ($cfg['access_token'] ?? '') === '') {
        throw new \RuntimeException("Config WhatsApp manquante: crée /sms/config.php ou définis les variables d'environnement.");
    }

    $templates = require __DIR__ . '/templates.php';
    $tplName   = 'en_attente_confirmation';
    $tpl       = $templates[$tplName] ?? null;
    if (!$tpl) {
        throw new \RuntimeException("Template {$tplName} non déclaré dans /sms/templates.php");
    }

    // Valide date/heure "01/01/2025 12:00"
    if (!preg_match('/^\d{2}\/\d{2}\/\d{4}\s\d{2}:\d{2}$/', $dateHeureDDMMYYYY_HHMM)) {
        throw new \InvalidArgumentException('Format date/heure invalide. Attendu: "01/01/2025 12:00"');
    }

    // Vérifie compte de variables attendu
    $expectedBody = (int)($tpl['components']['body_params'] ?? 0);
    if ($expectedBody !== 2) {
        throw new \RuntimeException("Le template {$tplName} attend {$expectedBody} paramètres BODY, 2 fournis.");
    }

    // Bouton URL index "0" avec 1 paramètre ({{1}})
    $btnCfg = $tpl['components']['button_url_params']['0'] ?? 0;
    if ((int)$btnCfg !== 1) {
        throw new \RuntimeException("Le bouton URL index 0 du template {$tplName} doit attendre 1 paramètre.");
    }

    $lang   = $tpl['language'] ?: ($cfg['default_lang'] ?? 'ru');
    $client = new WaClient($cfg);

    // BODY: {{1}} prénomNom, {{2}} dateHeure ; BUTTON index "0": {{1}} = rdvId
    return $client->sendTemplate(
        $tplName,
        $lang,
        $to,
        [$prenomNom, $dateHeureDDMMYYYY_HHMM],
        ['0' => [(string)$rdvId]]
    );
}