/* Saves the Full JSON at each modification */

Rkns.jsonIO = function(_renkan, _opts) {

    var _proj = _renkan.project;

    if (typeof _opts.http_method === "undefined") {

        _opts.http_method = 'PUT';

    }

    var _load = function() {

        _renkan.renderer.redrawActive = false;

        _proj.set({

            loadingStatus : true

        });

        Rkns.$.getJSON(_opts.url, function(_data) {

            _renkan.dataloader.load(_data);

            _proj.set({

                loadingStatus : false

            });

            _proj.set({

                saveStatus : 0

            });

            _renkan.renderer.redrawActive = true;

        });

    };

    var _save = function() {

        _proj.set({

            saveStatus : 2

        });

        var _data = _proj.toJSON();

        if (!_renkan.read_only) {

            Rkns.$.ajax({

                type : _opts.http_method,

                url : _opts.url,

                contentType : "application/json",

                data : JSON.stringify(_data),

                success : function(data, textStatus, jqXHR) {

                    _proj.set({

                        saveStatus : 0

                    });

                }

            });

        }

    };

    var _thrSave = Rkns._.throttle(function() {

        setTimeout(_save, 100);

    }, 1000);

    //TODO: Rearrange to avoid the 2 firts PUT due to a change in the project model

    // Take car of setting up the listener correctly to listen the save action on the view

    _proj.on("add:nodes add:edges add:users add:views", function(_model) {

        _model.on("change remove", function(_model) {

            _thrSave();

        });

        _thrSave();

    });

    _proj.on("change", function() {

        if (!(_proj.changedAttributes.length === 1 && _proj

                .hasChanged('saveStatus'))) {

            _thrSave();

        }

    });

    _load();

};