From a755d08d1cdfde6a9a48de38d8fdd779148709b8 Mon Sep 17 00:00:00 2001
From: cel <cel@f/6sQ6d2CMxRUhLpspgGIulDxDCwYD7DzFzPNr7u5AU=.ed25519>
Date: Wed, 12 Apr 2017 17:53:27 -0700
Subject: Add (un)follow button

---
 lib/app.js   | 15 +++++++++++++++
 lib/serve.js | 42 +++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 56 insertions(+), 1 deletion(-)

diff --git a/lib/app.js b/lib/app.js
index 6cc71a0..465e45b 100644
--- a/lib/app.js
+++ b/lib/app.js
@@ -201,6 +201,21 @@ App.prototype.streamPeers = function (opts) {
   })
 }
 
+App.prototype.getFollow = function (source, dest, cb) {
+  var self = this
+  pull(
+    self.sbot.links({source: source, dest: dest, rel: 'contact', values: true}),
+    pull.filter(function (msg) {
+      var c = msg && msg.value && msg.value.content
+      return c && c.type === 'contact'
+    }),
+    pull.reduce(function (doesFollow, msg) {
+      var c = msg.value.content
+      return !!c.following
+    }, false, cb)
+  )
+}
+
 App.prototype.getFollows = function (id, cb) {
   var self = this
   pull(
diff --git a/lib/serve.js b/lib/serve.js
index ec63b59..9137bc5 100644
--- a/lib/serve.js
+++ b/lib/serve.js
@@ -116,6 +116,7 @@ Serve.prototype.go = function () {
     if (err) next(err)
     else if (data.action === 'publish') self.publishJSON(next)
     else if (data.action === 'vote') self.publishVote(next)
+    else if (data.action === 'contact') self.publishContact(next)
     else next()
   }
 
@@ -152,6 +153,15 @@ Serve.prototype.publishVote = function (cb) {
   this.publish(content, cb)
 }
 
+Serve.prototype.publishContact = function (cb) {
+  var content = {
+    type: 'contact',
+    contact: this.data.contact,
+    following: !!this.data.following
+  }
+  this.publish(content, cb)
+}
+
 Serve.prototype.publish = function (content, cb) {
   var self = this
   var done = multicb({pluck: 1, spread: true})
@@ -827,14 +837,32 @@ Serve.prototype.friendList = function (friends, cb) {
   return list
 }
 
+var relationships = [
+  '',
+  'followed',
+  'follows you',
+  'friend'
+]
+
+var relationshipActions = [
+  'follow',
+  'unfollow',
+  'follow back',
+  'unfriend'
+]
+
 Serve.prototype.wrapUserFeed = function (isScrolled, id) {
   var self = this
+  var myId = self.app.sbot.id
   return u.hyperwrap(function (thread, cb) {
     var done = multicb({pluck: 1, spread: true})
     self.app.getAbout(id, done())
+    self.app.getFollow(myId, id, done())
+    self.app.getFollow(id, myId, done())
     if (!isScrolled) self.app.getFriendInfo(id, done())
-    done(function (err, about, info) {
+    done(function (err, about, weFollowThem, theyFollowUs, info) {
       if (err) return cb(err)
+      var relationshipI = weFollowThem | theyFollowUs<<1
       var done = multicb({pluck: 1, spread: true})
       done()(null, [
         h('section.ssb-feed',
@@ -848,6 +876,18 @@ Serve.prototype.wrapUserFeed = function (isScrolled, id) {
               {innerHTML: self.app.render.markdown(about.description)}) : ''
           )),
           isScrolled ? '' : [
+            id === myId ? '' : h('tr',
+              h('td'),
+              h('td.follow-info', h('form', {action: '', method: 'post'},
+                relationships[relationshipI], ' ',
+                h('input', {type: 'hidden', name: 'action', value: 'contact'}),
+                h('input', {type: 'hidden', name: 'contact', value: id}),
+                h('input', {type: 'hidden', name: 'following',
+                  value: weFollowThem ? '' : 'following'}),
+                h('input', {type: 'submit',
+                  value: relationshipActions[relationshipI]})
+              ))
+            ),
             h('tr',
               h('td', 'friends:'),
               h('td', self.friendList(info.friends, done()))
-- 
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