/**

 * TODO: add js header

 */

define([

    "dojo",

    "dojo/cookie",

    "dojo/json",

    "dojo/ready",

    "coweb/main",

    "rcolor",

], function(dojo, cookie, json, ready, coweb, RColor) {

    var CoRenkan = function() {

    };

    var proto = CoRenkan.prototype;

    proto.init = function() {

    	console.log("ready callback", dojo.config.corenkanConfig);

    	this.renkan = dojo.config.corenkanConfig.renkan;

    	this.project = dojo.config.corenkanConfig.renkan.project;

    	this.initCollab(dojo.config.corenkanConfig.projectId);

    	var that = this;

    	ready(function() {

	    	var sess = coweb.initSession();

	    	that.session = sess;

	    	sess.prepare({userDefined: {project_id:dojo.config.corenkanConfig.projectId}, collab: true}).then(function(data) {

	    		console.log("Prepare ok : ", data);

	        	that.setObjects();

	    	});

	    	sess.onStatusChange = function(status) {

	    	    console.log(status);

	    	    if(typeof that.onStatusChange === "function") {

	    	    	that.onStatusChange(status);

	    	    }

	    	};

    	});

    };

    proto.initCollab = function(id) {

    	console.log("init collabbs objects " + "users_" + id + ", " + "renkan_" + id);

    	this.users_collab = coweb.initCollab({id: "users_" + id});

    	this.users_collab.subscribeReady(this, "onLocalJoin");        

        this.users_collab.subscribeSiteJoin(this, 'onRemoteJoin');

        this.users_collab.subscribeSiteLeave(this, 'onRemoteLeave');

    	this.users_collab.subscribeSync("roster", this, "onRemoteRosterChange");

    	this.users_collab.subscribeStateResponse(this, "onUsersStateResponse");

    	this.collab = coweb.initCollab({id : "renkan_" + id});    	    	    	

    	this.collab.subscribeSync("project", this, "onRemoteProjectChange");

    	this.collab.subscribeSync("user", this, "onRemoteUserChange");

    	this.collab.subscribeSync("node", this, "onRemoteNodeChange");

    	this.collab.subscribeSync("edge", this, "onRemoteEdgeChange");

    	this.collab.subscribeStateResponse(this, "onStateResponse");    	

    };

    proto.onLocalJoin = function(params) {

    	console.log("Local join", params);

    	this.current_site = params.site;

    	if(typeof this.renkan !== "undefined" && this.renkan != null && typeof this.renkan.current_user != "undefined") {

    		this.renkan.current_user.set("site_id", params.site);

    	}

    };

    proto.onRemoteJoin = function(params) {

    	console.log("Remote join", params);

    	// do nothing

    };

    proto.onRemoteLeave = function(params) {

    	console.log("Remote leave", params);

    	// remove remote site from current_user_list

    	if(typeof this.renkan === "undefined" || this.renkan == null || typeof this.renkan.current_user_list === "undefined" || this.renkan.current_user_list == null) {

    		return;

    	}

    	for ( var user in this.renkan.current_user_list.filter(function(u) { return u.get("site_id") == params.site; })) {

			this.renkan.current_user_list.remove(user);

		}

    };

    proto.onUsersStateResponse = function(state) {

    	user_list = json.parse(state);

    	console.log("Users State response", user_list);

    	_.each(user_list, function(user, i, l) {

    		user['_id'] = user['id'];

    	});    	

    	this.renkan.current_user_list.reset(user_list, {silent: true});

    };

    proto.onStateResponse = function(state) {

    	obj = json.parse(state);

    	console.log("State response", obj);

    	obj['_id'] = obj['id'];

    	this.project.set(obj, {validate: true});

    };

    function prepareValues(obj,c) {

		values = {};

		for(var fieldname in c.changes) {

			if(c.changes[fieldname]) {

				values[fieldname] = obj.get(fieldname);

			}    			

		}

		return values;

    }

    proto.addObjectBind = function(type, obj, c, options, collab) {

		console.log("add " + type,obj, c, options);

		if(this.project == null) {

			console.log("null project exiting");

			return;

		}

		var values = obj.toJSON();

		var new_values = {

			id: obj.id,

			_type: type,

			_index: options.index,

			_project_id : obj.get("project").get("_id"),

			_user_id : (this.project.current_user!=null)?this.project.current_user.id:null

		};

		for(var k in new_values) {

			values[k] = new_values[k];

		}

		console.log("add values : ", values);

		collab.sendSync(type, values, "insert", options.index);

    };

    proto.removeObjectBind = function(type, obj, c, options, collab) {

		console.log("delete " + type,obj, c, options);

		var values = {

    	    id: obj.id,

    	    _type: type,

    	    _index: options.index,

    	    _project_id : obj.get("project").id,

    	    _user_id : (this.project.current_user!=null)?this.project.current_user.id:null

    	};

		collab.sendSync(type, values, "delete", options.index);    	

    };

    proto.updateObjectBind = function(type, obj, options, collab) {

		console.log("change " + type,obj, options);

		if(typeof obj != "undefined" && obj.hasChanged()) {

			var values = {

			    id: obj.id,

	    	    _type: type,

	    	    _project_id : obj.get("project").id,

	    	    _user_id : (this.project.current_user!=null)?this.project.current_user.id:null

	    	};

			_.extend(values,obj.changed);		

	    	collab.sendSync(type, values);

		}

    };

    /**

     * Called when an abject is changed

     * 

     */

    proto.objectChange = function(event, model, collection, options) {

		console.log("project change all ", event, model, collection, options);

		// check that current user is in user list of the project

		if(this.project == null || this.project.current_user == null) {

			return;

		}

		var current_user = this.project.current_user;

		if(this.project.get("users").get(current_user.id) == null) {

			var props = current_user.toJSON();

			this.project.addUser(props);

		}

	};

    proto.setObjects = function() {

    	console.log("Cookie BAYEUX_BROWSER : " + cookie("BAYEUX_BROWSER"));

    	var renkan = this.renkan;

    	var project = renkan.project;

    	this.setProject(project);

    	this.setRenkan(renkan);

    	this.setUser(renkan);

    };

    proto.setRenkan = function(renkan) {

    	console.log("Set Renkan");

    	var that = this;

    	renkan.current_user_list.bind("add", function(obj, c, options) {

    		that.addObjectBind("roster", obj, c, options, that.users_collab);

    	});

    	//renkan.current_user_list.bind("remove", function(obj, c, options) {

    	//	that.removeObjectBind("_roster", obj, c, options, that.users_collab);

    	//});

    	renkan.current_user_list.bind("change", function(obj, options) {

    		that.updateObjectBind("roster", obj, options, that.users_collab);

    	});

    	renkan.current_user_list.bind("change", function(obj, options) {

    		console.log("update roster",obj, options);

    		// get user in project

    		project = obj.get("project");

    		if(project == null) {

    			console.log("null project return");

    			return;

    		}

    		user = project.get("users").get(obj.id);

    		if(user == null) {

    			console.log("user " + obj.id + " not in project. return");

    			return;

    		}

    		for(att in obj.changed) {

    			new_val = obj.changed[att];

    			if(user.get("att") != new_val) {

    				user.set(att, new_val);

    			}

    		}

    	});

    };

    proto.setUser = function(renkan) {

    	console.log("set user : " + cookie("BAYEUX_BROWSER"));

    	if(typeof renkan === "undefined" || typeof renkan.project === "undefined" || renkan.project == null) {

    		return;

    	}

    	var user_id = cookie("BAYEUX_BROWSER");

    	var project = renkan.project;

    	var puser = project.get("users").get(user_id);

    	var puser_def = null;

    	if(puser == null) {

    		color = new RColor();

    		puser_def = {

    		    id: user_id,

                title: "anonymous",

                project: project,

                color: color.get(true, 0.3, 0.99),

                site_id: this.current_site

            };

    	}

    	else {

    		puser_def = puser.toJSON();

    		puser_def.project = project;

    	}

    	puser = renkan.current_user_list.push(puser_def);

    	project.current_user = puser;

    	renkan.current_user = puser.id;

    	var that = this;

    	project.once("all", function(event, model, collection, options){

    		that.objectChange(event, model, collection, options);

    	});

    	project.get("nodes").once("all", function(event, model, collection, options){

    		that.objectChange(event, model, collection, options);

    	});

    	project.get("edges").once("all", function(event, model, collection, options){

    		that.objectChange(event, model, collection, options);

    	});

    };

    proto.setProject = function(project) {

    	console.log("project", project);

    	var projectFields = ["title", "description", "uri"];

    	var that = this;

    	for(var fieldIndex in projectFields) {

    		(function(fi){

	    		var field = projectFields[fi];

	        	project.bind("change:"+field, function(obj, c) {

	        		console.log(c);

	        		values = {

	        		    id: obj.id,

	        		    _type: "project",

	        		    _project_id: obj.id,

	        		    _user_id : (that.project.current_user!=null)?that.project.current_user.id:null

	        		};

	        		values[field] = c;

	        		that.collab.sendSync("project", values);