<?php

class Config {
    private const NEXTCLOUD_BASE_URL = "NCBGW_BASE_URL";
    private const SECRET = "NCBGW_SECRET";
    private const BASIC_AUTH_USERNAME = 'NCBGW_USERNAME';
    private const BASIC_AUTH_PASSWORD = 'NCBGW_PASSWORD';

    private $nextCloudBaseUrl;
    private $secret;
    private $username;
    private $password;

    function __construct($config) {
        $this->nextCloudBaseUrl = $this->getRequired($config, Config::NEXTCLOUD_BASE_URL);
        $this->secret = $this->getRequired($config, Config::SECRET);
        $this->username = $this->getRequired($config, Config::BASIC_AUTH_USERNAME);
        $this->password = $this->getRequired($config, Config::BASIC_AUTH_PASSWORD);
    }

    private function getRequired($config, $key) {
        if (array_key_exists($key, $config)) {
            return $config[$key];
        } else {
            throw new Exception("missing configuration " . $key);
        }
    }

    public function getSecret() {
        return $this->secret;
    }

    public function getUrl() {
        return $this->nextCloudBaseUrl . '/ocs/v2.php/apps/spreed/api/v1';
    }

    public function getUsername() {
        return $this->username;
    }

    public function getPassword() {
        return $this->password;
    }
}