<?php
// api.php
header('Content-Type: application/json; charset=utf-8');
require_once __DIR__ . '/includes/db.php';

$action = $_GET['action'] ?? $_POST['action'] ?? '';

switch ($action) {
    case 'get_tires':
        $tires = TireStore::getTires();
        $brand = $_GET['brand'] ?? '';
        $rim = $_GET['rim'] ?? '';
        $season = $_GET['season'] ?? '';
        $category = $_GET['category'] ?? '';
        $q = trim($_GET['q'] ?? '');

        $filtered = array_filter($tires, function($t) use ($brand, $rim, $season, $category, $q) {
            if ($brand && $t['brand'] !== $brand) return false;
            if ($rim && (string)$t['rim'] !== (string)$rim) return false;
            if ($season && $t['season'] !== $season) return false;
            if ($category && stripos($t['category'], $category) === false) return false;
            if ($q) {
                $searchContent = $t['name'] . ' ' . $t['brand'] . ' ' . $t['size_str'] . ' ' . implode(' ', $t['vehicles'] ?? []);
                if (stripos($searchContent, $q) === false) return false;
            }
            return true;
        });

        echo json_encode(["status" => "success", "count" => count($filtered), "data" => array_values($filtered)], JSON_UNESCAPED_UNICODE);
        break;

    case 'get_tire':
        $id = $_GET['id'] ?? '';
        $tire = TireStore::getTireById($id);
        if ($tire) {
            echo json_encode(["status" => "success", "data" => $tire], JSON_UNESCAPED_UNICODE);
        } else {
            echo json_encode(["status" => "error", "message" => "تایر مورد نظر یافت نشد."], JSON_UNESCAPED_UNICODE);
        }
        break;

    case 'submit_consultation':
        $name = trim($_POST['name'] ?? '');
        $phone = trim($_POST['phone'] ?? '');
        $car = trim($_POST['car'] ?? '');
        $message = trim($_POST['message'] ?? '');

        if (!$name || !$phone) {
            echo json_encode(["status" => "error", "message" => "لطفاً نام و شماره تماس خود را وارد نمایید."], JSON_UNESCAPED_UNICODE);
            exit;
        }

        $res = TireStore::addConsultation([
            "name" => $name,
            "phone" => $phone,
            "car" => $car,
            "message" => $message
        ]);

        echo json_encode(["status" => "success", "message" => "درخواست مشاوره شما با موفقیت ثبت شد. کارشناسان ما به زودی با شما تماس خواهند گرفت.", "data" => $res], JSON_UNESCAPED_UNICODE);
        break;

    default:
        echo json_encode(["status" => "error", "message" => "Invalid action"], JSON_UNESCAPED_UNICODE);
        break;
}