1 files changed, 128 insertions, 0 deletions
diff --git a/bog.js b/bog.js
new file mode 100644
index 0000000..aa347ce
--- /dev/null
+++ b/bog.js
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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
+  }
+}
+
+