1 files changed, 40 insertions, 0 deletions
diff --git a/lib/app.js b/lib/app.js
index 3b56da7..bac3d53 100644
--- a/lib/app.js
+++ b/lib/app.js
@@ -977,6 +977,46 @@ App.prototype.getAddresses = function (id) {
   )
 }
 
+App.prototype.isPub = function (id, cb) {
+  if (!this.sbot.backlinks) {
+    return pull(
+      this.sbot.links({
+        dest: id,
+        rel: 'pub'
+      }),
+      pull.take(1),
+      pull.collect(function (err, links) {
+        if (err) return cb(err)
+        cb(null, links.length == 1)
+      })
+    )
+  }
+  return pull(
+    this.sbot.backlinks.read({
+      limit: 1,
+      query: [
+        {$filter: {
+          dest: id,
+          value: {
+            content: {
+              type: 'pub',
+              address: {
+                key: id,
+                host: {$truthy: true},
+                port: {$truthy: true},
+              }
+            }
+          }
+        }}
+      ]
+    }),
+    pull.collect(function (err, msgs) {
+      if (err) return cb(err)
+      cb(null, msgs.length == 1)
+    })
+  )
+}
+
 App.prototype.getIdeaTitle = function (id, cb) {
   if (!this.sbot.backlinks) return cb(null, String(id).substr(0, 8) + '…')
   pull(