adds basic file upload widget, dependencies and resources for attachm…

…ents

Signed-off-by: Akash Manohar J <akash@akash.im>

Gemfile

@@ -12,6 +12,9 @@ gem 'bushido'
 gem 'thin'
 gem 'faye'
 gem 'kaminari'
+gem 'aws-sdk'
+gem 'paperclip'
+gem 'remotipart'
 
 # Gems used only for assets and not required
 # in production environments by default.

Gemfile.lock

@@ -41,6 +41,11 @@ GEM
       multi_json (~> 1.0)
     addressable (2.2.7)
     arel (3.0.2)
+    aws-sdk (1.3.8)
+      httparty (~> 0.7)
+      json (~> 1.4)
+      nokogiri (<= 1.5.0)
+      uuidtools (~> 2.1)
     bcrypt-ruby (3.0.1)
     builder (3.0.0)
     bushido (0.0.36)
@@ -57,6 +62,7 @@ GEM
       xpath (~> 0.1.4)
     childprocess (0.3.1)
       ffi (~> 1.0.6)
+    cocaine (0.2.1)
     coffee-rails (3.2.2)
       coffee-script (>= 2.2.0)
       railties (~> 3.2.0)
@@ -109,6 +115,9 @@ GEM
     highline (1.6.11)
     hike (1.2.1)
     http_parser.rb (0.5.3)
+    httparty (0.8.1)
+      multi_json
+      multi_xml
     i18n (0.6.0)
     jasmine-core (1.2.0.rc1)
     journey (1.0.3)
@@ -127,8 +136,14 @@ GEM
       treetop (~> 1.4.8)
     mime-types (1.17.2)
     multi_json (1.1.0)
+    multi_xml (0.4.2)
     nokogiri (1.5.0)
     orm_adapter (0.0.6)
+    paperclip (2.7.0)
+      activerecord (>= 2.3.0)
+      activesupport (>= 2.3.2)
+      cocaine (>= 0.0.2)
+      mime-types
     polyglot (0.3.3)
     rack (1.4.1)
     rack-cache (1.2)
@@ -155,6 +170,7 @@ GEM
     rake (0.9.2.2)
     rdoc (3.12)
       json (~> 1.4)
+    remotipart (1.0.2)
     rest-client (1.6.7)
       mime-types (>= 1.16)
     rspec (2.8.0)
@@ -204,6 +220,7 @@ GEM
     uglifier (1.2.3)
       execjs (>= 0.3.0)
       multi_json (>= 1.0.2)
+    uuidtools (2.1.2)
     warden (1.1.1)
       rack (>= 1.0)
     xpath (0.1.4)
@@ -214,6 +231,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  aws-sdk
   bushido
   capybara
   coffee-rails (~> 3.2.1)
@@ -226,7 +244,9 @@ DEPENDENCIES
   jasmine!
   jquery-rails
   kaminari
+  paperclip
   rails (= 3.2.2)
+  remotipart
   rspec-rails
   sass-rails (~> 3.2.3)
   shoulda-matchers

app/assets/javascripts/backbone/data/channels.js.coffee

@@ -0,0 +1,3 @@
+class Kandan.Data.Channels
+  @active_channel_id: ()->
+    Kandan.Helpers.Channels.get_active_channel_id()

app/assets/javascripts/backbone/helpers/channels.js.coffee

@@ -9,7 +9,6 @@ class Kandan.Helpers.Channels
   @selected_tab: ()->
     $('#channels').tabs('option', 'selected')
 
-
   @get_active_channel_id: ()->
     $("#channels .ui-tabs-panel")
       .eq(@selected_tab())

app/assets/javascripts/backbone/plugins/attachments.js.coffee

@@ -0,0 +1,39 @@
+class Kandan.Plugins.Attachments
+
+  @plugin_namespace: "Kandan.Plugins.Attachments"
+
+  @template: _.template('''
+    <form accept-charset="UTF-8" action="/channels/<%= channel_id %>/attachments.js" data-remote="true" html="{:multipart=&gt;true}" id="file_upload" method="post"><div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="✓">
+      <input name="<%=csrf_param %>" type="hidden" value="<%= csrf_token %>"></div>
+      <input id="channel_id_<%= channel_id %>" name="channel_id[<%= channel_id %>]" type="hidden">
+      <input id="file" name="file" type="file">
+      <input name="commit" type="submit" value="Upload">
+   </form>
+  ''')
+
+  @channel_id: ()->
+    Kandan.Data.Channels.active_channel_id()
+
+  @csrf_param: ->
+    $('meta[name=csrf-param]').attr('content')
+
+
+  @csrf_token: ->
+    $('meta[name=csrf-token]').attr('content')
+
+
+  @render: ($widget_el)->
+    $upload_form = @template({
+      channel_id: @channel_id(),
+      csrf_param: @csrf_param(),
+      csrf_token: @csrf_token()
+    })
+    $widget_el.append($upload_form)
+    # $widget_el.append($file_list)
+
+
+  @init: ()->
+    Kandan.Widgets.register "attachments", @plugin_namespace
+
+
+Kandan.Plugins.register "Kandan.Plugins.Attachments"

app/controllers/attachments_controller.rb

@@ -0,0 +1,67 @@
+# -*- coding: utf-8 -*-
+class AttachmentsController < ApplicationController
+
+  before_filter :authenticate_user!
+
+  # GET /attachments
+  # GET /attachments.json
+  def index
+    @channel    = Channel.find_by_name(params[:channel_id])
+    @attachments = @channel.attachments.order("created_at DESC")
+
+    respond_to do |format|
+      format.json { render :json => @attachments.to_json(:methods => :url) }
+    end
+  end
+
+  # POST /attachments
+  # POST /attachments.json
+  def create
+    @channel    = Channel.find_by_name(params[:channel_id])
+    @attachment = Attachment.new(params[:attachment])
+
+    @attachment.user = current_user
+    @attachment.channel = Channel.find_by_name(params[:channel_id])
+    @attachment.file = params[:file]
+
+    respond_to do |format|
+      if @attachment.save
+        format.html { }
+        format.js
+        format.json { render json: @attachment, status: :created }
+      else
+        format.html { render action: "new" }
+        format.js
+        format.json { render json: @attachment.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # PUT /attachments/1
+  # PUT /attachments/1.json
+  def update
+    @attachment = Attachment.find_by_name(params[:id])
+
+    respond_to do |format|
+      if @attachment.update_attributes(params[:attachment])
+        format.html { redirect_to @attachment, notice: 'Attachment was successfully updated.' }
+        format.json { head :ok }
+      else
+        format.html { render action: "edit" }
+        format.json { render json: @attachment.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # DELETE /attachments/1
+  # DELETE /attachments/1.json
+  def destroy
+    @attachment = Attachment.find_by_name(params[:id])
+    @attachment.destroy
+
+    respond_to do |format|
+      format.html { redirect_to attachments_url }
+      format.json { head :ok }
+    end
+  end
+end

app/models/attachment.rb

@@ -0,0 +1,24 @@
+require 'paperclip'
+
+class Attachment < ActiveRecord::Base
+  belongs_to :channel
+  belongs_to :user
+  belongs_to :message
+
+  has_attached_file :file,
+                    :storage         => :s3,
+                    :s3_credentials  => {
+                      :access_key_id     => ENV['S3_ACCESS_KEY_ID'],
+                      :secret_access_key => ENV['S3_SECRET_ACCESS_KEY'],
+                      :session_token     => ENV['STS_SESSION_TOKEN']
+                    },
+                    :bucket            => ENV['S3_BUCKET'],
+                    :url             => "/:attachment/:id/:style/:basename.:extension",
+                    :path            => "#{ENV['S3_PREFIX']}/:attachment/:id/:style/:basename.:extension"
+
+  attr_accessible :file
+
+  def url
+    file.to_s
+  end
+end

config/routes.rb

@@ -5,6 +5,7 @@
 
   resources :channels do
     resources :activities
+    resources :attachments
   end
 
   get "/active_users" => "apis#active_users"

config/s3.yml

@@ -0,0 +1,4 @@
+access_key_id: <%= ENV['S3_ACCESS_KEY_ID'] %>
+secret_access_key: <%= ENV['S3_SECRET_ACCESS_KEY'] %>
+bucket: <%= ENV['S3_BUCKET'] %>
+session_token: <%= ENV['STS_SESSION_TOKEN'] %>