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function sync (subs, keys) {
var wsServers
localforage.getItem('securepubs').then(function (servers) {
if (servers) {
wsServers = servers
} else {
servers = ['ws://bogbook.com', 'ws://localhost:8080']
var pubs = []
servers.forEach(server => {
var ws = new WebSocket(server)
ws.onopen = function () {
ws.send(JSON.stringify({requester: keys.publicKey, sendpub: true}))
}
ws.onmessage = function (message) {
pubs.push(server + '/~' + message.data)
localforage.setItem('securepubs', pubs)
}
})
wsServers = pubs
}
}).then(function () {
subs.forEach(function (sub) {
wsServers.forEach(function (server, index) {
setTimeout(function () {
console.log('SYNCING WITH: ' + server + ' to fetch ' + sub)
var split = server.split('~')
var serverurl = split[0]
var serverpub = split[1]
var ws = new WebSocket(serverurl)
bog(sub).then(srclog => {
if (srclog) {
open(srclog[0]).then(msg => {
ws.onopen = function () {
var message = JSON.stringify(msg)
// if we have a log then send the latest log and see if we get anything back
box(message, serverpub, keys).then(boxed => {
var obj = {
requester: keys.publicKey,
box: boxed
}
ws.send(JSON.stringify(obj))
})
}
ws.onmessage = function (message) {
var req = JSON.parse(message.data)
console.log(req)
unbox(req.box, req.requester, keys).then(unboxed => {
var unboxedreq = JSON.parse(nacl.util.encodeUTF8(unboxed))
console.log(unboxedreq)
if (unboxedreq.seq === 0) {
var stringedfeed = JSON.stringify(srclog)
box(stringedfeed, serverpub, keys).then(boxed => {
var obj = {
requester: keys.publicKey,
box: boxed
}
console.log('Sending entire log of ' + msg.author + ' to ' + serverpub)
console.log(obj)
ws.send(JSON.stringify(obj))
})
}
if (unboxedreq.seq > msg.seq) {
console.log('server feed is longer, requesting diff from server')
var reqdiff = JSON.stringify({author: unboxedreq.author, seq: msg.seq})
box(reqdiff, serverpub, keys).then(boxed => {
var obj = {
requester: keys.publicKey,
box: boxed
}
ws.send(JSON.stringify(obj))
})
}
if (unboxedreq.seq < msg.seq) {
console.log('server feed is shorter, sending diff to server')
var diff = JSON.stringify(srclog.slice(0, msg.seq - unboxedreq.seq))
box(diff, serverpub, keys).then(boxed => {
var obj = {
requester: keys.publicKey,
box: boxed
}
ws.send(JSON.stringify(obj))
})
}
if (Array.isArray(unboxedreq)) {
console.log('received diff from server')
open(unboxedreq[0]).then(msg => {
localforage.getItem(msg.author).then(feed => {
open(feed[0]).then(lastmsg => {
if (unboxedreq.length + lastmsg.seq === msg.seq) {
var newlog = unboxedreq.concat(feed)
localforage.setItem(msg.author, newlog).then(success => {
console.log('combined existing feed of ' + msg.author + ' with diff and saved to client')
})
localforage.getItem('log').then(log => {
if (!log) {
var log = []
}
for (var i = unboxedreq.length -1; i >= 0; --i) {
open(unboxedreq[i]).then(opened => {
log.unshift(opened)
var scroller = document.getElementById('scroller')
scroller.insertBefore(render(opened, keys), scroller.childNodes[2])
if (unboxedreq.length + lastmsg.seq === opened.seq) {
log.sort((a, b) => a.timestamp - b.timestamp)
var reversed = log.reverse()
localforage.setItem('log', reversed).then(success => {
console.log('saved log with ' + opened.author + ' prepended to localForage')
})
}
})
}
})
}
})
})
})
}
})
}
})
} else {
console.log('NO LOG IN CLIENT')
ws.onopen = function () {
var reqwhole = JSON.stringify({author: sub, seq: 0})
box(reqwhole, serverpub, keys).then(boxed => {
var obj = {
requester: keys.publicKey,
box: boxed
}
ws.send(JSON.stringify(obj))
})
}
ws.onmessage = function (message) {
var req = JSON.parse(message.data)
console.log('received message from ' + req.requester)
unbox(req.box, req.requester, keys).then(unboxed => {
var unboxedreq = JSON.parse(nacl.util.encodeUTF8(unboxed))
if (Array.isArray(unboxedreq)) {
open(unboxedreq[0]).then(msg => {
localforage.getItem(msg.author).then(feed => {
if (!feed) {
localforage.setItem(msg.author, unboxedreq).then(success => {
console.log('saved log of ' + msg.author + ' to localforage')
})
localforage.getItem('log').then(log => {
if (!log) {
var log = []
}
for (var i = unboxedreq.length -1; i >= 0; --i) {
open(unboxedreq[i]).then(opened => {
log.unshift(opened)
var scroller = document.getElementById('scroller')
scroller.insertBefore(render(opened, keys), scroller.childNodes[2])
if (opened.seq === unboxedreq.length) {
log.sort((a, b) => a.timestamp - b.timestamp)
var reversed = log.reverse()
localforage.setItem('log', reversed).then(success => {
console.log('saved log with ' + opened.author + ' prepended to localForage')
})
}
})
}
})
}
})
})
}
})
}
}
})
}, index * 100000)
})
})
})
}
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