<?php

declare(strict_types=1);

namespace App\Libraries;

use MongoDB\Client;
use MongoDB\Database;

/**
 * Shared MongoDB connection wrapper.
 */
final class Mongo
{
    private static ?Database $db = null;

    public static function db(): Database
    {
        if (self::$db === null) {
            $db = env('MONGO_DB', 'ggdeals');

            $client = new Client(
                self::uri(),
                [],
                [
                    'typeMap' => [
                        'root'     => 'array',
                        'document' => 'array',
                        'array'    => 'array',
                    ],
                ]
            );

            self::$db = $client->selectDatabase($db);
        }

        return self::$db;
    }

    private static function uri(): string
    {
        $uri = env('MONGO_URI');
        if (is_string($uri) && $uri !== '') {
            return $uri;
        }

        $host = env('MONGO_HOST', 'harness-mongo');
        $port = env('MONGO_PORT', '27017');
        $user = (string) env('MONGO_USER', '');
        $pass = (string) env('MONGO_PASS', '');

        $auth = $user !== '' ? urlencode($user) . ':' . urlencode($pass) . '@' : '';

        return "mongodb://{$auth}{$host}:{$port}/?authSource=admin";
    }

    public static function collection(string $name): \MongoDB\Collection
    {
        return self::db()->selectCollection($name);
    }
}