0
0
Fork 0
mirror of https://github.com/matrix-construct/construct synced 2024-11-17 23:40:57 +01:00
construct/modules/static/js/storage.js
2018-02-05 21:24:34 -08:00

121 lines
2.9 KiB
JavaScript

/*
// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
*/
'use strict';
/**************************************
*
* Local & Session storage
*
* Lifetimes in order from most persistent to most transient:
*
* + mc.account - synchronized with server account_data (requires auth)
* + mc.local - synchronized with window localStorage
* + mc.session - synchronized with window sessionStorage
* + mc.instance - not synchronized; lifetime is the same as mc object.
*
* Note that the storage objects are serialized to JSON when actually being stored.
* Anything placed inside a live storage object should have a JSON representation.
*
* Note that storage is partitioned based on the mc.opts.base_url. This ensures
* if the target server changes for whatever reason the webstorage objects will be
* different for different base URL's.
*
*/
mc.storage = {};
/* Reads from webstorage into the client's webstorage globals.
*/
mc.storage.init = function()
{
let prefix = mc.opts.base_url.hash();
let update = (facility, target) =>
{
let item = facility.getItem(prefix);
if(item == null)
return;
let data = JSON.parse(item);
Object.update(target, data);
};
update(localStorage, mc.local);
update(sessionStorage, mc.session);
//console.log("read local storage objects");
if(typeof(mc.session.model) != "object")
mc.session.model = {};
mc.model = mc.session.model;
if(typeof(mc.model.show) != "object")
mc.model.show = {};
mc.show = mc.model.show;
};
/** Writes back the client's webstorage objects.
*/
mc.storage.sync = function()
{
let prefix = mc.opts.base_url.hash();
let update = (facility, source) =>
{
let item = JSON.stringify(source);
facility.setItem(prefix, item);
};
update(localStorage, mc.local);
update(sessionStorage, mc.session);
//console.log("wrote local storage objects");
};
/**
* account_data based storage
*/
mc.storage.account = {};
/** Update account-based storage object
*/
mc.storage.account.update = function(data)
{
Object.update(mc.account, data);
};
/** Write back account-based storage to server
*/
mc.storage.account.sync = function()
{
if(!mc.instance.authentic)
return false;
return mc.storage.account.sync.data();
};
mc.storage.account.sync.data = async function()
{
let data = mc.account;
let user_id = mc.my.mxid;
let type = mc.opts.account_data.key;
if(empty(data))
return;
let request = mc.m.user.account_data.put(user_id, type, data); try
{
let response = await request.response;
}
catch(error)
{
console.error("Error synchronizing account_data: " + error);
}
};