1 files changed, 96 insertions, 0 deletions
diff --git a/followalert.rb b/followalert.rb
new file mode 100755
index 0000000..5315d9c
--- /dev/null
+++ b/followalert.rb
@@ -0,0 +1,96 @@
+#!/usr/bin/env ruby
+
+# print new follows/unfollows to stdout
+
+require 'json'
+require 'net/http'
+require 'date'
+
+channel = "bungmonkey"
+unless ARGV.empty?
+  channel = ARGV[0]
+end
+
+# this is technically data but we'll shove it in .config because i am a bad person
+DATAPATH=Dir.home+'/.config/twitch/'
+
+def difftime(seconds)
+  units = [60,60,24].reduce([seconds]) { |m,o| m.unshift(m.shift.divmod(o)).flatten }
+  # [days, hours, minutes, seconds]
+  result = Array.new
+  units[3] > 0 && result.unshift(units[3].to_s + " seconds")
+  units[2] > 0 && result.unshift(units[2].to_s + " minutes")
+  units[1] > 0 && result.unshift(units[1].to_s + " hours")
+  units[0] > 0 && result.unshift(units[0].to_s + " days")
+  result.length > 1 && result[-1]="and "+result[-1]
+  return result.join(', ')
+end
+
+unless File.exists?(DATAPATH+channel+'/follows')
+  unless File.exists?(DATAPATH+channel)
+    unless File.exists?(DATAPATH)
+      unless File.exists?(Dir.home+'/.config')
+        Dir.mkdir(Dir.home+'/.config')
+      end
+      Dir.mkdir(DATAPATH)
+    end
+    Dir.mkdir(DATAPATH+channel)
+  end
+  Dir.mkdir(DATAPATH+channel+'/follows')
+end
+
+unless File.exists?(DATAPATH+channel+'/unfollows')
+  Dir.mkdir(DATAPATH+channel+'/unfollows')
+end
+
+http = Net::HTTP.new('api.twitch.tv', 443)
+http.use_ssl = true
+http.read_timeout = 500
+
+offset = 0
+total = 1
+
+twitchfollows = Array.new
+localfollows = Array.new
+localunfollows = Array.new
+
+while offset < total
+begin
+  response = JSON.parse(http.request(Net::HTTP::Get.new("/kraken/channels/#{channel}/follows?offset=#{offset}&limit=100")).body)
+rescue
+  exit 2 # if twitch is broken, give up for now and wait until later
+  # very occasionally the API spits out blank json. it would be nice to detect this, but i have not caught it in debugging.
+end
+  total = response['_total']
+  for follow in response['follows']
+    name = follow['user']['name'].gsub('/','slash') # sterilize
+    followtime = DateTime.iso8601(follow["created_at"]).strftime(format='%s')
+    followpath   = DATAPATH+channel+'/follows/'+name
+    unfollowpath = DATAPATH+channel+'/unfollows/'+name
+    unless File.exists?(followpath)
+      File.write(followpath, followtime)
+      if File.exists?(unfollowpath)
+        print name + ' refollowed after ' + difftime( followtime.to_i - File.read(unfollowpath).to_i ) + "!\n"
+      else
+        print name + " is now following!\n"
+      end
+    end
+    twitchfollows << name
+  end
+  offset += 100
+
+end
+
+localfollows   = Dir.entries(DATAPATH+channel+'/follows/')   - [".", ".."]
+localunfollows = Dir.entries(DATAPATH+channel+'/unfollows/') - [".", ".."]
+
+for unfollow in localfollows - twitchfollows
+  unfollowpath = DATAPATH+channel+'/unfollows/'+unfollow
+  followpath   = DATAPATH+channel+'/follows/'+unfollow
+  unless File.exists?(unfollowpath)
+    unfollowtime = DateTime.now.strftime(format='%s')
+    File.write(unfollowpath, unfollowtime)
+    print unfollow + ' unfollowed after ' + difftime(unfollowtime.to_i - File.read(followpath).to_i) + "!\n"
+    File.unlink(followpath)
+  end
+end