<?php

namespace Modules\Core\Shipping\Carriers\BoxNow;

use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Http;
use Modules\Core\Shipping\Carriers\BoxNow\Exceptions\BoxNowApiException;

class BoxNowClient
{
    private const TOKEN_CACHE_KEY = 'boxnow.access_token';

    public function __construct(private readonly array $config) {}

    /**
     * GET/POST against the main delivery/parcel API, authenticated with a
     * cached Bearer token.
     */
    public function request(string $method, string $path, array $payload = []): array
    {
        $response = Http::withToken($this->token())
            ->timeout($this->config['timeout'])
            ->{$method}("{$this->config['base_url']}{$path}", $payload);

        if ($response->status() === 401) {
            // Token expired early / was revoked — refresh once and retry.
            Cache::forget(self::TOKEN_CACHE_KEY);

            $response = Http::withToken($this->token())
                ->timeout($this->config['timeout'])
                ->{$method}("{$this->config['base_url']}{$path}", $payload);
        }

        if ($response->failed()) {
            throw new BoxNowApiException(
                "Box Now API error ({$response->status()}) on {$method} {$path}",
                $response->json() ?? [],
            );
        }

        return $response->json() ?? [];
    }

    /**
     * The origins/destinations lookups are served faster from a separate
     * location API host, per Box Now's own documentation.
     */
    public function locationRequest(string $path, array $query = []): array
    {
        $response = Http::withToken($this->token())
            ->timeout($this->config['timeout'])
            ->get("{$this->config['location_api_url']}{$path}", $query);

        if ($response->failed()) {
            throw new BoxNowApiException(
                "Box Now location API error ({$response->status()}) on GET {$path}",
                $response->json() ?? [],
            );
        }

        return $response->json() ?? [];
    }

    /**
     * Fetch raw bytes (e.g. a PDF label) rather than JSON.
     */
    public function requestRaw(string $path): string
    {
        $response = Http::withToken($this->token())
            ->timeout($this->config['timeout'])
            ->get("{$this->config['base_url']}{$path}");

        if ($response->failed()) {
            throw new BoxNowApiException("Box Now API error ({$response->status()}) on GET {$path}");
        }

        return $response->body();
    }

    private function token(): string
    {
        return Cache::remember(self::TOKEN_CACHE_KEY, now()->addMinutes(55), function () {
            $response = Http::timeout($this->config['timeout'])
                ->post("{$this->config['base_url']}/auth-sessions", [
                    'grant_type' => 'client_credentials',
                    'client_id' => $this->config['client_id'],
                    'client_secret' => $this->config['client_secret'],
                ]);

            if ($response->failed()) {
                throw new BoxNowApiException('Box Now authentication failed', $response->json() ?? []);
            }

            return $response->json('access_token');
        });
    }
}