var NodeGit = require("../");

var normalizeOptions = NodeGit.Utils.normalizeOptions;

var FilterRegistry = NodeGit.FilterRegistry;

var _register = FilterRegistry.register;

var _unregister = FilterRegistry.unregister;

// register should add filter by name to dict and return

// Override FilterRegistry.register to normalize Filter

FilterRegistry.register = function(name, filter, priority, callback) {

// setting default value of attributes

if (filter.attributes === undefined) {

filter.attributes = "";

}

filter = normalizeOptions(filter, NodeGit.Filter);

if (!filter.check || !filter.apply) {

return callback(new Error(

"ERROR: please provide check and apply callbacks for filter"

));

}

return _register(name, filter, priority)

.then(function(result) {

if (typeof callback === "function") {

callback(null, result);

}

return result;

}, callback);

};

FilterRegistry.unregister = function(name, callback) {

return _unregister(name)

.then(function(result) {

if (typeof callback === "function") {

callback(null, result);

}

return result;

}, callback);

};