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context.js
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context.js
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var promisify = require("bluebird-events");
const EventEmitter = require('events');
function Context (timestamp, ip, user_id, session_id) {
Object.defineProperty(this, "_cached_user_data", {
value: false,
writable: true
})
Object.defineProperty(this, "loading_user_data", {
value: false,
writable: true
})
Object.defineProperty(this, "e", {
value: new EventEmitter()
})
this.e.setMaxListeners(20);
Object.defineProperty(this, "session_id", {
value: session_id
}); //to make it non-enumerable and non-writeable
if (user_id === undefined || user_id === false) {
user_id = null;
}
if (timestamp === undefined) {
var d = new Date();
timestamp = d.getTime();
}
this.timestamp = timestamp;
this.ip = ip || null;
this.user_id = user_id;
}
Context.prototype = new function(){
this.get_user_data = function(){
var self = this;
if (this.user_id === null){
return Promise.resolve(null);
} else if (self.loading_user_data){
return promisify(self.e, {
resolve: "loaded_user_data",
reject: "error"
})
} else if (self._cached_user_data === false){
var Sealious = require("sealious");
self.loading_user_data = true;
var SuperContext = require("lib/super-context.js");
var c = new SuperContext(self);
return Sealious.run_action(c, ["resources", "user", this.user_id], "show")
.then(function(user_data){
self._cached_user_data = user_data;
self.loading_user_data = false;
self.e.emit("loaded_user_data", user_data);
return user_data;
}).catch(function(error){
self.e.emit("error");
throw error;
})
} else {
return Promise.resolve(self._cached_user_data);
}
}
this.run_action = function(subject_path, action_name, params){
var Sealious = require("sealious");
return Sealious.run_action(this, subject_path, action_name, params);
}
}
module.exports = Context;

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