<?php

class getSpecificData {

    public function getWeather() {
        $url = "https://api.openweathermap.org/data/2.5/weather?q=Berlin,DE&APPID=5bc3e1a438c58fca444c4370ac0517b2&units=metric";

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_TIMEOUT, 10);

        $response = curl_exec($ch);

        if(curl_errno($ch)) {
            echo "cURL Fehler: " . curl_error($ch);
            exit;
        }

        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);

        if ($httpCode === 200) {
            $data = json_decode($response, true);

            return [
                'aktuell'      => $data['main']['temp'],
                'min'          => $data['main']['temp_min'],
                'max'          => $data['main']['temp_max'],
                'gefuehlt'     => $data['main']['feels_like']
            ];
        } else {
            return "API Fehler. HTTP Code: " . $httpCode;
        }
    }

    public function getUserAgent(): string {
        return $_SERVER['HTTP_USER_AGENT'] ?? 'Unbekannt';
    }

    public function getRequestURL(): string {
        return $_SERVER['REQUEST_URI'] ?? 'Unbekannt';
    }

    public function getCookie(string $name): ?string {
        return $_COOKIE[$name] ?? 'Unbekannt';
    }

    public function getSessionID(): string {
        return $session_id ?? 'Unbekannt ';
    }

    public function getServerPort(): string {
        return $_SERVER['SERVER_PORT'] ?? 'Unbekannt';
    }

    public function getClientPort(): string {
        return $_SERVER['REMOTE_PORT'] ?? 'Unbekannt';
    }

    public function getDocumentRoot(): string {
        return $_SERVER['DOCUMENT_ROOT'] ?? 'Unbekannt';
    }
    
    public function getQuery(): string {
        return $_SERVER['QUERY_STRING'] ?? 'Unbekannt';
    }
    
    public function getRequestMethod(): string {
        return $_SERVER['REQUEST_METHOD'] ?? 'Unbekannt';
    }

    public function getCurrentDir(): string {
        return __DIR__ ; 
    }

    public function getReferer(): string {
        return $_SERVER['HTTP_REFERER'] ?? 'Unbekannt';
    }

    public function getWebsite(): string {
        return $_SERVER['HTTP_HOST'] ?? 'Unbekannt';
    }

    public function getDatabase(): string {
        $conn = db_connect();
        return $conn->host_info;
    }

    public function getLoggingStatus($variable) {
        $status = DatabaseShow(
            "Variablen",
            "WERT",
            "VARIABLENNAME = ?",
            $variable
        );
        return $status;
    }
    
    public function getServerName(): string {
        $Servername = $_SERVER['SERVER_NAME'] ?? 'Unbekannt';

        if (in_array($Servername, ['Unbekannt', '0.0.0.0', '127.0.0.1'])) {
            return "Lokal";
        } else {
            return $Servername;
        }
    }

    public function getServerIP(): string {
        $ServerIP = $_SERVER['SERVER_ADDR'] ?? 'Unbekannt';

        if (in_array($ServerIP, ['Unbekannt', '0.0.0.0', '127.0.0.1'])) {
            return "Lokal";
        } else {
            return $ServerIP;
        }
    }
    
    public function getClientIP(): string {
        $xff = $_SERVER['HTTP_X_FORWARDED_FOR'] ?? null;

        if ($xff) {
            $ips = array_map('trim', explode(',', $xff));
            $clientIp = $ips[0];
            return $clientIp;
        } else {
            return $_SERVER['REMOTE_ADDR'];
        }
    }

    public function getRequestTime(): string {
        date_default_timezone_set('Europe/Berlin');
        $timestamp = $_SERVER['REQUEST_TIME'] ?? time();
        return date('Y-m-d H:i:s', $timestamp);
    }

    function getGeoIP($ClientIP) {
        if (in_array($ClientIP, ['0.0.0.0', '127.0.0.1', '172.30.0.1'])) {
            return "Lokal";
        } elseif (in_array($ClientIP, ['Unbekannt', '0.0.0.0', '127.0.0.1'])) {
            return "Lokal";
        } else {
            $response = file_get_contents("http://ip-api.com/json/{$ClientIP}?fields=country,countryCode");
            $data = json_decode($response);
            return $data->country; 
        }
    }

    function getWhitelistedIPs() {
        include_once 'DatabaseController.php';
        $data = DatabaseShow(
            "Whitelisted",
            "`IP-ADDRESSE`"
        );

        $results = [];
        foreach ($data as $row) {
            $results[] =$row['IP-ADDRESSE'];
        }
        return $results;
    }

    function getServerNode($ServerIP) {
        $nodes = [
            'node1' => '172.30.0.11',
            'node1' => '172.30.0.21',

            'node2' => '172.30.0.12',
            'node2' => '172.30.0.22',
            
            'node3' => '172.30.0.13',
            'node3' => '172.30.0.23',
            
            'node4' => '172.30.0.14',
            'node4' => '172.30.0.24',
            'Lokal' => 'Lokal',
        ];

        foreach ($nodes as $node => $ip) {
            if ($ServerIP == $ip) {
                return $node;
                break;
            }
        }   
    } 

    function getClientStatus($ClientIP) {
        if (in_array($ClientIP, $this->getWhitelistedIPs())) {
            return "Trusted";
        } 
        return "Untrusted";
    }

    function getIsAdmin(){
        return $_SESSION['is_admin'] ?? false;
    }
    
    function getIsSuperuser(){
        return $_SESSION['is_superuser'] ?? false;
    }
    
    function getUsername(){
        return $_SESSION['username'] ?? 'Gast';
    }

public function getAllData(): array {
    return [
        'Server - Document Root'   => $this->getDocumentRoot(),
        'Server - Current Dir'     => $this->getCurrentDir(),
        'Server - Name'            => $this->getServerName(),
        'Server - IP'              => $this->getServerIP(),
        'Server - Port'            => $this->getServerPort(),
        'Server - Node'            => $this->getServerNode($this->getServerIP()),
        'Server - Database'        => $this->getDatabase(),


        'Request - URL'            => $this->getRequestURL(),
        'Request - Method'         => $this->getRequestMethod(),
        'Request - Query'          => $this->getQuery(),
        'Request - Referer'        => $this->getReferer(),
        'Request - Time'           => $this->getRequestTime(),


        'Client - IP'              => $this->getClientIP(),
        'Client - Port'            => $this->getClientPort(),
        'Client - Country'         => $this->getGeoIP($this->getClientIP()),
        'Client - User Agent'      => $this->getUserAgent(),
        'Client - Cookie USER'     => $this->getCookie('USER'),
        'Client - Cookie SESSSRV'  => $this->getCookie('SESSSRV'),
        'Client - Session ID'      => $this->getSessionID(),


        'Access - Whitelisted'     => $this->getClientStatus($this->getClientIP()),
        'Access - Whitelisted IPs' => $this->getWhitelistedIPs(),


        'User - Username'          => $this->getUsername(),
        'User - Is Admin'          => $this->getIsAdmin(),
        'User - Is Superuser'      => $this->getIsSuperuser(),

        'System - Website'         => $this->getWebsite(),
        'Logging - Public'         => $this->getLoggingStatus('GENERAL_PUBLIC_LOGGING')[0]['WERT'],
        'Logging - Public DEV'     => $this->getLoggingStatus('DEV_PUBLIC_LOGGING')[0]['WERT'],
        'Logging - Backend'        => $this->getLoggingStatus('GENERAL_BACKEND_LOGGING')[0]['WERT'],
        'Logging - Backend DEV'    => $this->getLoggingStatus('DEV_BACKEND_LOGGING')[0]['WERT'],
    ];
}

    public function ShowAllData(): void {
        $SpecificData = (new getSpecificData())->getAllData();

        echo "<pre>";
        foreach ($SpecificData as $key => $value) {
            if (is_array($value)) {
                $value = implode(', ', $value);
            }
        printf("%-22s : %s\n", $key, $value);
        }
        echo "</pre>";
    }
}