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// bog.open -- opens a signature and returns content if you pass a signature and a public key
// EX: open(msg).then(content => { console.log(content) })
async function open (msg) {
var pubkey = nacl.util.decodeBase64(msg.author.substring(1))
var sig = nacl.util.decodeBase64(msg.signature)
var opened = await JSON.parse(nacl.util.encodeUTF8(nacl.sign.open(sig, pubkey)))
opened.key = msg.key
return opened
}
// bog.keys -- gets your public/private keypair, generates one if there is none
// EX: keys().then(key => { console.log(key)})
async function keys (key) {
var keypair = await localforage.getItem('id')
if (keypair != null) {
return keypair
} else {
var genkey = nacl.sign.keyPair()
var keypair = {
publicKey: '@' + nacl.util.encodeBase64(genkey.publicKey),
privateKey: nacl.util.encodeBase64(genkey.secretKey)
}
localforage.setItem('id', keypair)
return keypair
}
}
// bog.get -- iterates over log and returns a post.
// EX: get('%x5T7KZ5haR2F59ynUuCggwEdFXlLHEtFoBQIyKYppZYerq9oMoIqH76YzXQpw2DnYiM0ugEjePXv61g3E4l/Gw==').then(msg => { console.log(msg)})
async function get (key) {
var log = await localforage.getItem('log')
if (log != null) {
for (var i = log.length - 1; i >= 0; --i) {
if (log[i].key === key) {
return log[i]
}
}
}
}
// bog.getName -- iterates over a feed and returns a person's name
function getName (id) {
var name = h('span')
name.textContent = id.substring(0, 10) + '...'
return name
}
// bog.log (feed) -- returns a specific feed if a parameter is passed, if not returns the entire log
// EX: bog().then(log => { console.log(log)})
// EX: bog('@ExE3QXmBhYQlGVA3WM2BD851turNzwhruWbIpMd7rbQ=').then(log => { console.log(log)})
async function bog (feed) {
if (feed) {
var log = await localforage.getItem(feed)
return log
} else {
var log = await localforage.getItem('log')
return log
}
}
// bog.publish -- publishes a new bog post and updates the feeds
// EX: publish({type: 'post', timestamp: Date.now(), text: 'Hello World'}).then(msg => { console.log(msg)})
async function publish (post, keys) {
post.author = keys.publicKey
var message = { author: keys.publicKey }
var feed = await localforage.getItem(keys.publicKey)
if (feed) {
var firstMsg = await open(feed[0])
post.seq = ++firstMsg.seq
message.key = '%' + nacl.util.encodeBase64(nacl.hash(nacl.util.decodeUTF8(JSON.stringify(post)))),
message.signature = nacl.util.encodeBase64(nacl.sign(nacl.util.decodeUTF8(JSON.stringify(post)), nacl.util.decodeBase64(keys.privateKey)))
localforage.getItem('log').then(log => {
if (log) {
log.unshift(message)
localforage.setItem('log', log)
} else {
var feed = [message]
localforage.setItem('log', feed)
}
})
feed.unshift(message)
localforage.setItem(keys.publicKey, feed)
return message
} else {
post.seq = 0
message.key = '%' + nacl.util.encodeBase64(nacl.hash(nacl.util.decodeUTF8(JSON.stringify(post)))),
message.signature = nacl.util.encodeBase64(nacl.sign(nacl.util.decodeUTF8(JSON.stringify(post)), nacl.util.decodeBase64(keys.privateKey)))
localforage.getItem('log').then(log => {
if (log) {
log.unshift(message)
localforage.setItem('log', log)
} else {
var feed = [message]
localforage.setItem('log', feed)
}
})
var feed = [message]
localforage.setItem(keys.publicKey, feed)
return message
}
}
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