<?php
set_include_path("../includes/");
require_once("../includes/DB.php");
require_once("../inside/credentials.php");


/* Set HTTP response code */
function set_response_code($code) {
    if(!is_int($code)) {
        return false;
    }
    header('X-Ignore-This: something', true, $code);
}


function is_valid_utf8($text) {
    return mb_check_encoding($text, 'utf-8');
}


function get_db_connection($fetch_mode=NULL, $options=NULL) {
    if($options == NULL) {
        $options = array(
            'debug'       => 2,
            'portability' => DB_PORTABILITY_ALL,
        );
    }

    $conn = DB::connect(getDSN(), $options);

    if(DB :: isError($conn)) {
        echo $conn->toString();
    } else {
        if($fetch_mode != NULL) {
            $conn->setFetchMode($fetch_mode);
        }
    }

    return $conn;
}


function clean_phonenumber($pn) {
    $pn = preg_replace('/[^0-9\+]/', '', $pn); // remove everything except valid chars
    $pn = preg_replace('/^00/','+', $pn); // replace starting 00 with +
    // norwegian phone numbers
    if( strlen($pn) === 8 && ($pn[0] === "4" || $pn[0] === "9") ) {
        $pn = "+47".$pn;
    }
    // ...without +
    if( strlen($pn) === 10 && $pn[0] === "4" && $pn[1] === "7" && ($pn[2] === "4" || $pn[2] === "9") ) {
        $pn = "+".$pn;
    }
    return $pn;
}


// E.164
function valid_phonenumber($phone) {
    return preg_match('/^\+?\d{8,15}$/i', $phone);
}


function get_user_data($ids, $conn) {
    $conn->setFetchMode(DB_FETCHMODE_ASSOC);

    /* Get data */
    $sql_is_member = "u.expires > NOW() OR u.expires IS NULL AS is_member";
    $CARDNO_LEGACY_MAX = 100000000;
    $sql_card_is_legacy = "u.cardno<$CARDNO_LEGACY_MAX AS card_is_legacy";
    $sql_groups = "GROUP_CONCAT(DISTINCT g.id,';',g.name SEPARATOR ',') AS groups";
    $data_sql = "SELECT u.id,u.username,u.firstname,u.lastname,u.email,up.number,u.expires,u.cardno,$sql_card_is_legacy,$sql_groups,$sql_is_member
    FROM din_user as u
    LEFT JOIN din_userphonenumber as up ON up.user_id=u.id
    LEFT JOIN din_usergrouprelationship AS ug ON u.id=ug.user_id
    LEFT JOIN din_group AS g ON g.id=ug.group_id
    WHERE u.id IN ($ids)
    GROUP BY u.id
    ORDER BY u.firstname, u.lastname ASC";

    $res = $conn->getAll($data_sql);

    if( DB::isError($res) ) {
        new Exception($res->getMessage());
    }
    $results = array();

    /* Encode and output */
    foreach($res as $result) {
        foreach($result as $key => $value) {
            if($key == "groups") {
                if($value === "") {
                    continue; // no groups
                }
                $u_gs = array();
                $u_groups = explode(",",$value);
                foreach($u_groups as $g) {
                    list($id,$name) = explode(";", $g);
                    if( !is_valid_utf8($name) ) {
                        $name = utf8_encode($name);
                    }

                    $u_gs[] = array(
                        'id' => $id,
                        'name' => $name
                    );
                }
                $result[$key] = $u_gs;
            }
            /* Encoding issues? oh yes, utf-8 please */
            elseif( !is_valid_utf8($value) ) {
                $result[$key] = utf8_encode($value);
            }
        }
        $results[] = $result;
    }
    return $results;
}