function apiVars($query)
{
$channel = channelOrDie($query);
$varName = $query[3];
if (!preg_match('/^[A-Z0-9\\-]{1,64}$/i', $varName)) {
tellError("bad varname", 400);
}
if ($query[2] == 'set') {
authOrDie($query, AUTH_SHARED_SECRET);
$json = json_decode(file_get_contents("php://input"));
if ($json == false || !property_exists($json, "value")) {
tellBadParam('json');
}
$value = $json->value;
if (strlen($value) > 255) {
tellBadParam('value');
}
// if (property_exists($json, "description")) {
// $description = $json->description;
// if (strlen($description) > 255) {
// tellBadParam('description');
// }
// $success = dbSetVar($channel, $varName, $value, $description);
// } else {
$success = dbSetVar($channel, $varName, $value);
// }
if ($success) {
tellSuccess();
} else {
tellError("database error", 500);
}
} else {
if ($query[2] == 'increment') {
authOrDie($query, AUTH_SHARED_SECRET);
$json = json_decode(file_get_contents("php://input"));
if ($json == false || !property_exists($json, "incAmount")) {
tellBadParam('json');
}
$incAmount = $json->incAmount;
if (!is_int($incAmount) && !is_float($incAmount)) {
tellBadParam('incAmount');
}
$result = dbIncrementVar($channel, $varName, $incAmount);
if ($result !== false) {
$response = array("newValue" => $result);
tellSuccess($response);
} else {
tellError("database error", 500);
}
} else {
if ($query[2] == 'unset') {
authOrDie($query, AUTH_SHARED_SECRET);
$success = dbDeleteVar($channel, $varName);
if ($success === false) {
tellError("database error", 500);
} else {
if ($success === NULL) {
tellError("var not found", 404);
}
}
tellSuccess();
} else {
if ($query[2] == 'get') {
$row = dbGetVar($channel, $varName);
if ($row === false) {
tellError("database error", 500);
} else {
if ($row === NULL) {
tellError("var not found", 404);
}
}
tellSuccess($row);
} else {
tellBadMethod();
}
}
}
}
}
/**
* Increments the value of a var, or creates a new row for that var in the database
*
* Returns new value if successful, or false if an error occurred (should use === when checking return value)
*/
function dbIncrementVar($channel, $varName, $incAmount = 0)
{
global $mysqli;
initMysqli();
$row = dbGetVar($channel, $varName);
if ($row === false || $row === NULL) {
$dbAction = dbSetVar($channel, $varName, $incAmount);
if ($dbAction === false) {
return $dbAction;
}
return strval($incAmount);
} else {
$oldValue = $row['value'];
if (is_numeric($oldValue)) {
if (intval($oldValue) == floatval($oldValue)) {
$newValue = intval($oldValue) + $incAmount;
} else {
$newValue = floatval($oldValue) + $incAmount;
}
$newValueStr = strval($newValue);
$dbAction = dbSetVar($channel, $varName, $newValueStr);
if ($dbAction === false) {
return $dbAction;
}
return $newValueStr;
} else {
return $oldValue;
}
}
}