<?php
// api/update_radius.php
// Update radius satu rumah ibadah + reassign penduduk

require_once __DIR__ . '/../includes/config.php';

header('Content-Type: application/json; charset=utf-8');
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: POST, OPTIONS');
header('Access-Control-Allow-Headers: Content-Type');

if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') exit;

$input = getInput();
$id     = $input['id'] ?? null;
$radius = $input['radius'] ?? null;

if (!$id || !$radius) {
    jsonResponse(['success' => false, 'error' => 'id dan radius diperlukan'], 400);
}

$radius = max(100, min(5000, (int)$radius)); // clamp 100–5000m

$db = getDB();
$db->prepare("UPDATE rumah_ibadah SET radius = ? WHERE id = ?")->execute([$radius, $id]);

reassignAll();

jsonResponse(['success' => true, 'radius' => $radius, 'message' => "Radius diubah ke {$radius}m, penduduk di-reassign"]);