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context.js
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context.js
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"use strict";
const locreq = require("locreq")(__dirname);
const promisify = require("bluebird-events");
const EventEmitter = require("events");
function Context(
timestamp,
ip,
user_id,
session_id,
anonymous_session_id,
anon_session_is_new,
anonymous_user_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
Object.defineProperty(this, "anonymous_session_id", {
value: anonymous_session_id || null,
}); // to make it non-enumerable and non-writeable
Object.defineProperty(this, "anon_session_is_new", {
value: anon_session_is_new || false,
}); // to make it non-enumerable and non-writeable
if (user_id === undefined || user_id === false) {
user_id = null;
}
if (timestamp === undefined) {
const d = new Date();
timestamp = d.getTime();
}
this.timestamp = timestamp;
this.ip = ip || null;
this.user_id = user_id;
this.anonymous_user_id = anonymous_user_id || null;
}
Context.prototype.get_user_data = function(app) {
const 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) {
const SuperContext = locreq("lib/super-context.js");
self.loading_user_data = true;
const c = new SuperContext(self);
return app
.run_action(c, ["collections", "users", 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);
}
};
module.exports = Context;

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