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

var normalizeFetchOptions = NodeGit.Utils.normalizeFetchOptions;

var normalizeOptions = NodeGit.Utils.normalizeOptions;

var shallowClone = NodeGit.Utils.shallowClone;

var Submodule = NodeGit.Submodule;

var _foreach = Submodule.foreach;

var _update = Submodule.prototype.update;

// Override Submodule.foreach to eliminate the need to pass null payload

Submodule.foreach = function(repo, callback) {

return _foreach(repo, callback, null);

};

/**

* Updates a submodule

*

* @async

* @param {Number} init Setting this to 1 will initialize submodule

* before updating

* @param {SubmoduleUpdateOptions} options Submodule update settings

* @return {Number} 0 on success, any non-zero return value from a callback

*/

Submodule.prototype.update = function(init, options) {

var fetchOpts = normalizeFetchOptions(options && options.fetchOpts);

if (options) {

options = shallowClone(options);

delete options.fetchOpts;

}

options = normalizeOptions(options, NodeGit.SubmoduleUpdateOptions);

if (options) {

options.fetchOpts = fetchOpts;

}

return _update.call(this, init, options);

};