<?php

class Vodia_Api {
    private $log;

    private $baseurl;
    private $admin_user;
    private $admin_pass;
    private $session_name;
    private $session_id;


    public function __construct($baseurl, $admin_user, $admin_pass) {
        $this->log = mfLoghandler::singleton();

        $this->baseurl = rtrim($baseurl, '/');
        $this->admin_user = $admin_user;
        $this->admin_pass = $admin_pass;

        if(!$this->baseurl || !$this->admin_user || !$this->admin_pass) {
            throw new Exception("Invalid Arguments");
        }
    }

    private function _authenticate($domain) {
        $url = $this->baseurl.VODIA_API_EP_SYSTEM_SESSION;

        $session_id = false;
        //$this->session_name = sprintf("%x", crc32(uniqid("thetool", true)));
        $this->session_name = "auth";

        $ctx_options = ["http" => [
            "ignore_errors" => true,
            "method" => "POST",
            "headers" => [
                "Accept: application/json",
                "Content-Type: application/json",
            ],
            "content" => json_encode([
                "name" => $this->session_name,
                "value" => "$this->admin_user ".md5($this->admin_pass),
                "admin" => true,
                "domain" => $domain,
            ]),
            //"header" => $headers,
        ]];

        //$this->log->debug(__METHOD__.": authenticating to $url for domain $domain, user $this->admin_user");
        //$this->log->debug(__METHOD__.": ".print_r($ctx_options, true));


        $ctx = stream_context_create($ctx_options);
        $output = file_get_contents($url, false, $ctx);
        //$this->log->debug(__METHOD__.": auth output: $output");

        $m = [];
        if(preg_match('/^"([^"]+)"$/', $output, $m)) {
            if($m[1]) {
                $session_id = $m[1];
            }
        }

        if(!$session_id) {
            throw new Exception("Authentication failed for domain $domain");
        }

        $this->session_id = $session_id;
        return true;
    }

    public function setUsersettings($domain, $user, Array $user_settings) {
        if(!$this->session_id) {
            $this->_authenticate($domain);
        }

        $url = $this->baseurl.VODIA_API_EP_POST_USER_SETTINGS;
        $url = str_replace("{DOMAIN}", $domain, $url);
        $url = str_replace("{EXT}", $user, $url);

        $ctx_options = [
            "http" => [
                "ignore_errors" => true,
                "method" => "POST",
                "header" => [
                    "Cookie: session=".$this->session_id,
                    "Accept: application/json",
                    "Content-Type: application/json",
                ],
                "content" => json_encode($user_settings),
            ]
        ];

        $ctx = stream_context_create($ctx_options);
        $output = file_get_contents($url, false, $ctx);

        //$this->log->debug(__METHOD__.": output: $output");

        return true;
    }

    /**
     * Get user settings for a specific user in a domain.
     *
     * @param string $domain The domain to query.
     * @param string $user The user extension to query.
     * @param string|bool $key Optional. If provided, only the value for this key will be returned.
     * @return mixed Returns the user settings as an associative Array or a specific key's value as string if $key is provided or false if $key is not available.
     */
    public function getUsersetting($domain, $user, $key = false) {
        if(!$this->session_id) {
            $this->_authenticate($domain);
        }

        $url = $this->baseurl.VODIA_API_EP_GET_USER_SETTINGS;
        $url = str_replace("{DOMAIN}", $domain, $url);
        $url = str_replace("{EXT}", $user, $url);

        $ctx_options = [
            "http" => [
                "ignore_errors" => true,
                "method" => "GET",
                "header" => [
                    "Cookie: session=".$this->session_id,
                    "Accept: application/json",
                    "Content-Type: application/json",
                ],
            ]
        ];

        $ctx = stream_context_create($ctx_options);
        $output = file_get_contents($url, false, $ctx);

        //$this->log->debug(__METHOD__.": output: $output");

        $user_settings = json_decode($output, true);

        if($key) {
            if(array_key_exists($key, $user_settings)) {
                return $user_settings[$key];
            } else {
                return false;
            }
        }

        return $user_settings;

    }
}