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(function (){'use strict';
// some default values
// note that how default values are defined/used may change
var defaults = {
token: '123456789',
api: '/api'
};
var CALL = 2;
var RETOK = 3;
var RETERR = 4;
var EVENT = 5;
var PROTO1 = "x-afb-ws-json1";
// Definition of the Angular module
var AfbClientModule = angular.module('AfbClient', []);
// The instanciation of the module
AfbClientModule.factory('AfbClient', [ '$location', function ($location) {
var refid = $location.host();
var params = $location.search();
return clients[refid] || (client[refid] = new AfbContext(refid, params));
}]);
// prototype for handling context by uuid and token
function AfbContext(refid, params) {
this.refid = refid;
this.api = params.api || defaults.api;
this.uhttp = params.uhttp || this.api+'/';
this.uws = params.uws || this.api;
this.token = params.token || defaults.token;
this.uuid = params.uuid;
this.ws = null;
}
// prototype of functions linked to AfbContext object
AfbContext.prototype = {
// call using websockets
call: function(method, query) { return getws(this).call(method, query); },
// call using get
get: function(method, query) { return $http.get(this.uhttp+method, mixtu(this, query)); },
// call using post
post: function(method, query) { return $http.post(this.uhttp+method, mixtu(this, query)); }
};
// get the current websocket
function getws(ctxt) {
return ctxt.ws || (ctxt.ws = new AfbWebSocket(ctxt));
}
// inserts the current token in the answer
function mixtu(ctxt, query) {
return ("token" in query) ? query : angular.extend({token:ctxt.token},query);
}
// prototype for websocket
function AfbWebSocket(ctxt) {
var protos = [ PROTO1 ];
this.context = ctxt;
var url = "ws:" + ctxt.refid + ctxt.uws;
var q = ctxt.uuid ? ("?x-afb-uuid=" + ctxt.uuid) : "";
if (ctxt.token)
q = (q ? (q + "&") : "?") + ("x-afb-token=" + ctxt.token);
this.pendings = {};
this.awaitens = {};
this.counter = 0;
this.ws = new WebSocket(url + q, protos);
this.ws.onopen = onopen.bind(this);
this.ws.onerror = onerror.bind(this);
this.ws.onclose = onclose.bind(this);
this.ws.onmessage = onmessage.bind(this);
this.onopen = onopen;
this.onabort = onabort;
}
AfbWebSocket.prototype = {
call: function(method, query) {
return new Promise((function(resolve, reject){
var id = String(this.counter = 4095 & (this.counter + 1));
while (id in this.pendings) id = String(this.counter = 4095 & (this.counter + 1));
this.pendings[id] = [ resolve, reject ];
var arr = [CALL, id, method, request ];
var tok = this.context.token; if (tok) arr.push(tok);
this.ws.send(angular.toJson(arr, 0));
}).bind(this));
},
addEvent: function (name, handler) {
(this.awaitens[name] || (this.awaitens[name] = [])).push(handler);
},
removeEvent: function (name, handler) {
var a = this.awaitens[name];
if (a) {
var i = a.indexOf(handler);
if (i >= 0) a.splice(i, 1);
}
}
};
function onmessage(ev) {
var obj = angular.fromJson(ev.data);
var id = obj[1];
var ans = obj[2];
if (obj[3])
this.context.token = obj[3];
switch (obj[0]) {
case RETOK: reply(this.pendings, id, ans, 0); break;
case RETERR: reply(this.pendings, id, ans, 1); break;
case EVENT: fire(this.awaitens, id, ans); break;
}
}
function fire(awaitens, name, data) {
var a = awaitens[name];
if (a) a.forEach(function(handler){handler(data);});
var i = name.indexOf("/");
if (i >= 0) {
a = awaitens[name.substring(0,i)];
if (a) a.forEach(function(handler){handler(data);});
}
a = awaitens["*"];
if (a) a.forEach(function(handler){handler(data);});
}
function reply(pendings, id, ans, offset) {
if (id in pendings) {
var p = pendings[id];
delete pendings[id];
var f = p[offset];
if (f) f(ans);
}
}
/*
AFB_websocket = function(onopen, onabort) {
}
function onerror(event) {
var f = this.onabort;
if (f) {
delete this.onopen;
delete this.onabort;
f && f(this);
}
this.onerror && this.onerror(this);
}
function onopen(event) {
var f = this.onopen;
delete this.onopen;
delete this.onabort;
f && f(this);
}
function onclose(event) {
for (var id in this.pendings) {
var ferr = this.pendings[id].onerror;
ferr && ferr(null, this);
}
this.pendings = {};
this.onclose && this.onclose();
}
function close() {
this.ws.close();
}
function call(method, request) {
}
*/
/*
// Factory is a singleton and share its context within all instances.
AfbClientModule.factory('AppCall', function ($http, AppConfig, $log) {
var myCalls = {
get : function(plugin, action, query, callback) {
if (!query.token) query.token = AppConfig.session.token; // add token to provided query
$http.get('/api/' + plugin + '/' + action , {params: query}).then (callback, callback);
}
};
return myCalls;
});
*/
})();
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