<?php

namespace App\Utils;


class Shadowrocket
{
    public static function buildShadowsocks($password, $server)
    {
        $name = rawurlencode($server['name']);
        $str = str_replace(
            ['+', '/', '='],
            ['-', '_', ''],
            base64_encode("{$server['cipher']}:{$password}")
        );
        return "ss://{$str}@{$server['host']}:{$server['port']}#{$name}\r\n";
    }

    public static function buildVmess($uuid, $server)
    {
        $userinfo = base64_encode('auto:' . $uuid . '@' . $server['host'] . ':' . $server['port']);
        $config = [
            'tfo' => 1,
            'remark' => $server['name'],
            'alterId' => $server['alter_id']
        ];
        if ($server['tls']) {
            $config['tls'] = 1;
            if ($server['tlsSettings']) {
                $tlsSettings = json_decode($server['tlsSettings'], true);
                if (isset($tlsSettings['allowInsecure']) && !empty($tlsSettings['allowInsecure']))
                    $config['allowInsecure'] = (int)$tlsSettings['allowInsecure'];
                if (isset($tlsSettings['serverName']) && !empty($tlsSettings['serverName']))
                    $config['peer'] = $tlsSettings['serverName'];
            }
        }
        if ($server['network'] === 'ws') {
            $config['obfs'] = "websocket";
            if ($server['networkSettings']) {
                $wsSettings = json_decode($server['networkSettings'], true);
                if (isset($wsSettings['path']) && !empty($wsSettings['path']))
                    $config['path'] = $wsSettings['path'];
                if (isset($wsSettings['headers']['Host']) && !empty($wsSettings['headers']['Host']))
                    $config['obfsParam'] = $wsSettings['headers']['Host'];
            }
        }
        if ($server['network'] === 'grpc') {
            $config['obfs'] = "grpc";
            if (isset($server['networkSettings'])) {
                $grpcObject = json_decode($server['networkSettings'], true);
                if (isset($grpcObject['serviceName'])) {
                    $config['obfsParam'] = json_encode([
                        'Host' => $grpcObject['serviceName']
                    ]);
                    $config['path'] = '/';
                }
            }
        }
        $query = http_build_query($config, '', '&', PHP_QUERY_RFC3986);
        $uri = "vmess://{$userinfo}?{$query}";
        $uri .= "\r\n";
        return $uri;
    }

    public static function buildTrojan($password, $server)
    {
        $name = rawurlencode($server['name']);
        $query = http_build_query([
            'allowInsecure' => $server['allow_insecure'],
            'peer' => $server['server_name']
        ]);
        $uri = "trojan://{$password}@{$server['host']}:{$server['port']}?{$query}&tfo=1#{$name}";
        $uri .= "\r\n";
        return $uri;
    }
}