<?php

declare(strict_types=1);

namespace App\Core;

final class Request
{
    private string $method;
    private string $path;
    private array $headers;
    private array $queryParams;
    private array $body;
    private array $files;
    public ?object $user = null; // Populated by AuthMiddleware
    public ?string $tenantId = null; // Populated by TenantMiddleware

    public function __construct()
    {
        $this->method = $_SERVER['REQUEST_METHOD'];
        
        // Normalize path: extract /api/v1/... portion from any subdirectory structure
        $rawPath = parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH);
        $apiPos = strpos($rawPath, '/api/v1/');
        if ($apiPos !== false) {
            $this->path = substr($rawPath, $apiPos); // e.g. /api/v1/auth/login
        } else {
            $this->path = $rawPath;
        }
        $this->headers = getallheaders();
        $this->queryParams = $_GET;
        $this->files = $_FILES;
        
        $contentType = $this->getHeader('Content-Type');
        if ($contentType && str_contains($contentType, 'application/json')) {
            $this->body = json_decode(file_get_contents('php://input'), true) ?? [];
        } else {
            $this->body = $_POST;
        }
    }

    public function getMethod(): string { return $this->method; }
    public function getPath(): string { return $this->path; }
    public function getHeaders(): array { return $this->headers; }
    public function getQueryParams(): array { return $this->queryParams; }
    public function getBody(): array { return $this->body; }
    public function getFiles(): array { return $this->files; }

    public function getHeader(string $name): ?string
    {
        $name = strtolower($name);
        foreach ($this->headers as $key => $value) {
            if (strtolower($key) === $name) {
                return $value;
            }
        }
        return null;
    }

    public function input(string $key, mixed $default = null): mixed
    {
        return $this->body[$key] ?? $this->queryParams[$key] ?? $default;
    }
}