From 3abde183b745e45b14decf6c533ccf409c8dabc7 Mon Sep 17 00:00:00 2001
From: Mike Slemmer <mike@jamkazam.com>
Date: Fri, 12 Apr 2013 15:36:05 -0700
Subject: [PATCH] added model stuff for mix

---
 lib/jam_ruby.rb                  |  1 +
 lib/jam_ruby/models/mix.rb       | 51 +++++++++++++++++++++++++
 spec/jam_ruby/models/mix_spec.rb | 64 ++++++++++++++++++++++++++++++++
 3 files changed, 116 insertions(+)
 create mode 100644 lib/jam_ruby/models/mix.rb
 create mode 100644 spec/jam_ruby/models/mix_spec.rb

diff --git a/lib/jam_ruby.rb b/lib/jam_ruby.rb
index 2bcc3471e..6f9063e1b 100644
--- a/lib/jam_ruby.rb
+++ b/lib/jam_ruby.rb
@@ -58,6 +58,7 @@ require "jam_ruby/models/user_favorite"
 require "jam_ruby/models/search"
 require "jam_ruby/models/recording"
 require "jam_ruby/models/recorded_track"
+require "jam_ruby/models/mix"
 
 include Jampb
 
diff --git a/lib/jam_ruby/models/mix.rb b/lib/jam_ruby/models/mix.rb
new file mode 100644
index 000000000..a05e4e23d
--- /dev/null
+++ b/lib/jam_ruby/models/mix.rb
@@ -0,0 +1,51 @@
+# FIXME:
+# Need to pass in the JSON spec for the mix and put that in the migration.
+
+module JamRuby
+  class Mix < ActiveRecord::Base
+    MAX_MIX_TIME = 7200     # 2 hours
+
+    def self.schedule(recording_id, user_id, description, spec)
+      # This would have made it so you couldn't have more than one mix of a recording+owner
+      #raise unless self.where(:recording_id => recording_id, :owner_id => user_id).size == 0
+      recording = Recording.find(recording_id)
+      raise if recording.nil?
+      raise if recording.owner_id != user_id
+
+		  mix = Mix.new 
+      mix.recording_id = recording_id
+      mix.owner_id = user_id
+      mix.description = description
+      mix.spec = spec
+      mix.save
+
+      mix
+    end
+    
+    def self.next(mix_server)
+      # First check if there are any mixes started so long ago that we want to re-run them
+      Mix.where("completed_at IS NULL AND started_at < ?", Time.now - MAX_MIX_TIME).each do |mix|
+        mix.started_at = nil
+        mix.mix_server = nil
+        mix.save
+      end
+
+      mix = Mix.where(:started_at => nil).limit(1).first
+      return nil if mix.nil?
+
+      mix.started_at = Time.now
+      mix.mix_server = mix_server
+      mix.save
+      
+      mix
+    end
+
+
+    def finish(url)
+      self.completed_at = Time.now
+      self.url = url
+      save
+    end
+
+  end
+end
diff --git a/spec/jam_ruby/models/mix_spec.rb b/spec/jam_ruby/models/mix_spec.rb
new file mode 100644
index 000000000..5e7753762
--- /dev/null
+++ b/spec/jam_ruby/models/mix_spec.rb
@@ -0,0 +1,64 @@
+require 'spec_helper'
+
+describe Mix do
+  before do
+    @user = FactoryGirl.create(:user)
+    @connection = FactoryGirl.create(:connection, :user => @user)
+    @instrument = FactoryGirl.create(:instrument, :description => 'a great instrument')
+    @track = FactoryGirl.create(:track, :connection => @connection, :instrument => @instrument)
+    @music_session = FactoryGirl.create(:music_session, :creator => @user, :musician_access => true)
+    @music_session.connections << @connection
+    @music_session.save
+    @recording = Recording.start(@music_session.id, @user)
+    @recording.stop
+    @mix = Mix.schedule(@recording.id, @user.id, "description", "{}")
+  end
+ 
+  it "should create a mix for a user's recording properly" do
+    @mix.recording_id.should == @recording.id
+    @mix.owner_id.should == @user.id
+    @mix.description.should == "description"
+    @mix.spec.should == "{}"
+    @mix.url.should be_nil
+    @mix.mix_server.should be_nil
+    @mix.started_at.should be_nil
+    @mix.completed_at.should be_nil
+  end
+
+  it "should fail to create a mix if the userid doesn't own the recording" do
+    @user2 = FactoryGirl.create(:user)
+    expect { Mix.schedule(@recording.id, @user2.id) }.to raise_error
+  end
+  
+  it "should fail if the recording doesn't exist" do
+    expect { @mix2 = Mix.schedule("bad_recording_id", @user.id) }.to raise_error
+  end
+
+  it "should return a mix when the cron asks for it" do
+    this_mix = Mix.next("server")
+    this_mix.id.should == @mix.id
+    @mix.reload
+    @mix.started_at.should_not be_nil
+    @mix.mix_server.should == "server"
+    @mix.completed_at.should be_nil
+  end
+
+  it "should record when a mix has finished" do
+    Mix.find(@mix.id).finish("http://blah")
+    @mix.reload
+    @mix.completed_at.should_not be_nil
+    @mix.url.should == "http://blah"
+  end
+
+  it "should re-run a mix if it was started a long time ago" do
+    this_mix = Mix.next("server")
+    @mix.reload
+    @mix.started_at -= 1000000
+    @mix.save
+    this_mix = Mix.next("server")
+    this_mix.id.should == @mix.id
+  end
+
+end
+
+