add built-in emoji as blobs

1 files changed, 46 insertions, 3 deletions

diff --git a/lib/serve.js b/lib/serve.js
index b6a058a..1909bbc 100644
--- a/lib/serve.js
+++ b/lib/serve.js
@@ -19,6 +19,7 @@ var mime = require('mime-types')
 var ident = require('pull-identify-filetype')
 var htime = require('human-time')
 var ph = require('pull-hyperscript')
+var emojis = require('emoji-named-characters')
 
 module.exports = Serve
 
@@ -1970,7 +1971,18 @@ Serve.prototype.composer = function (opts, cb) {
     .map(function (mention) { return mention.name })
     .filter(uniques())
     .map(function (name) {
-      var id = formEmojiNames[name] || self.app.getReverseEmojiNameSync(name)
+      // 1. check emoji-image mapping for this message
+      var id = formEmojiNames[name]
+      if (id) return {name: name, id: id}
+      // 2. TODO: check user's preferred emoji-image mapping
+      // 3. check builtin emoji
+      var link = self.getBuiltinEmojiLink(name)
+      if (link) {
+        return {name: name, id: link.link}
+        blobs[id] = {type: link.type, size: link.size}
+      }
+      // 4. check recently seen emoji
+      id = self.app.getReverseEmojiNameSync(name)
       return {name: name, id: id}
     })
 
@@ -2054,8 +2066,17 @@ Serve.prototype.composer = function (opts, cb) {
       .filter(function (mention) {
         if (mention.emoji) {
           mention.link = formEmojiNames[mention.name]
-            || self.app.getReverseEmojiNameSync(mention.name)
-          if (!mention.link) return false
+          if (!mention.link) {
+            var link = self.getBuiltinEmojiLink(mention.name)
+            if (link) {
+              mention.link = link.link
+              mention.size = link.size
+              mention.type = link.type
+            } else {
+              mention.link = self.app.getReverseEmojiNameSync(mention.name)
+              if (!mention.link) return false
+            }
+          }
         }
         var blob = blobs[mention.link]
         if (blob) {
@@ -2172,6 +2193,28 @@ Serve.prototype.composer = function (opts, cb) {
 
 }
 
+function hashBuf(buf) {
+  var hash = crypto.createHash('sha256')
+  hash.update(buf)
+  return '&' + hash.digest('base64') + '.sha256'
+}
+
+Serve.prototype.getBuiltinEmojiLink = function (name) {
+  if (!(name in emojis)) return
+  var file = path.join(emojiDir, name + '.png')
+  var fileBuf = fs.readFileSync(file)
+  var id = hashBuf(fileBuf)
+  // seed the builtin emoji
+  pull(pull.once(fileBuf), this.app.sbot.blobs.add(id, function (err) {
+    if (err) console.error('error adding builtin emoji as blob', err)
+  }))
+  return {
+    link: id,
+    type: 'image/png',
+    size: fileBuf.length,
+  }
+}
+
 Serve.prototype.emojis = function (path) {
   var self = this
   pull(