From 75fa67ce9869076f2d1994902b2a6a2c14807856 Mon Sep 17 00:00:00 2001
From: cel <cel@f/6sQ6d2CMxRUhLpspgGIulDxDCwYD7DzFzPNr7u5AU=.ed25519>
Date: Thu, 20 Apr 2017 19:34:32 -0700
Subject: Factor out contacts stream handling

---
 lib/app.js   | 114 ++---------------------------------------------------------
 package.json |   3 +-
 2 files changed, 3 insertions(+), 114 deletions(-)

diff --git a/lib/app.js b/lib/app.js
index da15d28..b64ec2a 100644
--- a/lib/app.js
+++ b/lib/app.js
@@ -8,8 +8,7 @@ var ssbAvatar = require('ssb-avatar')
 var hasher = require('pull-hash/ext/ssb')
 var multicb = require('multicb')
 var paramap = require('pull-paramap')
-var many = require('pull-many')
-var defer = require('pull-defer')
+var Contacts = require('ssb-contact')
 
 var Serve = require('./serve')
 var Render = require('./render')
@@ -243,115 +242,6 @@ App.prototype.streamChannels = function (opts) {
   )
 }
 
-App.prototype.streamFollows = function (id) {
-  return pull(
-    this.sbot.links({
-      source: id,
-      rel: 'contact',
-      values: true,
-      reverse: true,
-    }),
-    pull.map(function (msg) {
-      return msg.value.content
-    }),
-    pull.filter(),
-    pull.unique(function (c) {
-      return c.contact
-    }),
-    pull.filter(function (c) {
-      return c.following
-    }),
-    pull.map(function (c) {
-      return c.contact
-    })
-  )
-}
-
-App.prototype.streamFollowers = function (id) {
-  return pull(
-    this.sbot.links({
-      dest: id,
-      rel: 'contact',
-      values: true,
-      reverse: true,
-    }),
-    pull.unique(function (msg) {
-      return msg.value.author
-    }),
-    pull.filter(function (msg) {
-      var c = msg.value.content
-      return c && c.following
-    }),
-    pull.map(function (msg) {
-      return msg.value.author
-    })
-  )
-}
-
-App.prototype.streamFriends = function (id, endCb) {
-  var follows = {}, followers = {}
-  return pull(
-    many([
-      pull(
-        this.streamFollows(id),
-        pull.map(function (id) {
-          return {id: id, follow: true}
-        })
-      ),
-      pull(
-        this.streamFollowers(id),
-        pull.map(function (id) {
-          return {id: id, follower: true}
-        })
-      )
-    ]),
-    pull.filter(function (op) {
-      if (op.follow) {
-        if (followers[op.id]) {
-          delete followers[op.id]
-          return true
-        } else {
-          follows[op.id] = true
-          return false
-        }
-      }
-      if (op.follower) {
-        if (follows[op.id]) {
-          delete follows[op.id]
-          return true
-        } else {
-          followers[op.id] = true
-          return false
-        }
-      }
-    }),
-    pull.map(function (op) {
-      return op.id
-    }),
-    endCb && function (read) {
-      return function (abort, cb) {
-        read(abort, function (end, data) {
-          cb(end, data)
-          if (end) endCb(end === true ? null : end, {
-            followers: Object.keys(followers),
-            follows: Object.keys(follows),
-          })
-        })
-      }
-    }
-  )
-}
-
 App.prototype.createContactStreams = function (id) {
-  var follows = defer.source()
-  var followers = defer.source()
-  var friends = this.streamFriends(id, function (err, more) {
-    follows.resolve(err ? pull.error(err) : pull.values(more.follows))
-    followers.resolve(err ? pull.error(err) : pull.values(more.followers))
-  })
-  return {
-    friends: friends,
-    follows: follows,
-    followers: followers,
-  }
+  return new Contacts(this.sbot).createContactStreams(id)
 }
diff --git a/package.json b/package.json
index 28f1704..1bc5812 100644
--- a/package.json
+++ b/package.json
@@ -13,15 +13,14 @@
     "mime-types": "^2.1.12",
     "multicb": "^1.2.1",
     "pull-cat": "^1.1.11",
-    "pull-defer": "^0.2.2",
     "pull-hash": "^1.0.0",
     "pull-hyperscript": "^0.2.2",
     "pull-identify-filetype": "^1.1.0",
-    "pull-many": "^1.0.8",
     "pull-paginate": "^1.0.0",
     "pull-paramap": "^1.2.1",
     "pull-stream": "^3.5.0",
     "ssb-avatar": "^0.2.0",
+    "ssb-contact": "^1.0.0",
     "ssb-marked": "^0.7.1",
     "ssb-mentions": "^0.2.0",
     "ssb-party": "^0.3.0",
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