From 1370d21460255914e03754fb0f20052e6b3002d7 Mon Sep 17 00:00:00 2001
From: Jesse Morgan <jesse@jesterpm.net>
Date: Sat, 28 Mar 2015 23:14:33 -0700
Subject: Crude first pass at downloading files.

---
 app/controllers/application_controller.rb |  4 +++
 app/controllers/downloads_controller.rb   | 22 ++++++++++++++++
 app/views/downloads/index.html.erb        | 44 ++++++++-----------------------
 config/routes.rb                          |  3 ++-
 4 files changed, 39 insertions(+), 34 deletions(-)

diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index d83690e..a994170 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -2,4 +2,8 @@ class ApplicationController < ActionController::Base
   # Prevent CSRF attacks by raising an exception.
   # For APIs, you may want to use :null_session instead.
   protect_from_forgery with: :exception
+
+  def not_found
+    raise ActionController::RoutingError.new('Not Found')
+  end
 end
diff --git a/app/controllers/downloads_controller.rb b/app/controllers/downloads_controller.rb
index 300d0b1..2681b0a 100644
--- a/app/controllers/downloads_controller.rb
+++ b/app/controllers/downloads_controller.rb
@@ -1,3 +1,6 @@
+require 'aws-sdk-core/s3'
+require 'fileutils'
+
 class DownloadsController < ApplicationController
   before_action :set_download, only: [:show, :edit, :update, :destroy]
 
@@ -7,6 +10,25 @@ class DownloadsController < ApplicationController
     @downloads = Download.all
   end
 
+  # GET /downloads/:filename
+  def download
+    download = Download.find_by(filename: params[:filename]) or not_found
+
+    s3client = Aws::S3::Client.new()
+    s3obj = Aws::S3::Object.new(ENV['S3_DOWNLOADS_BUCKET'], download.filename, client: s3client)
+    resp = s3obj.get
+
+    FileUtils.mkdir_p(Rails.root.join('tmp', 'downloads'))
+
+    cached_filename = Rails.root.join('tmp', 'downloads', download.filename)
+
+    File.open(cached_filename, 'wb') do |file|
+      file.write resp.body.read
+    end
+
+    send_file cached_filename
+  end
+
   # GET /downloads/1
   # GET /downloads/1.json
   def show
diff --git a/app/views/downloads/index.html.erb b/app/views/downloads/index.html.erb
index c017aab..0f0afc9 100644
--- a/app/views/downloads/index.html.erb
+++ b/app/views/downloads/index.html.erb
@@ -1,35 +1,13 @@
 <p id="notice"><%= notice %></p>
 
-<h1>Listing Downloads</h1>
-
-<table>
-  <thead>
-    <tr>
-      <th>Name</th>
-      <th>Filename</th>
-      <th>Type</th>
-      <th>Description</th>
-      <th>Hits</th>
-      <th colspan="3"></th>
-    </tr>
-  </thead>
-
-  <tbody>
-    <% @downloads.each do |download| %>
-      <tr>
-        <td><%= download.name %></td>
-        <td><%= download.filename %></td>
-        <td><%= download.type %></td>
-        <td><%= download.description %></td>
-        <td><%= download.hits %></td>
-        <td><%= link_to 'Show', download %></td>
-        <td><%= link_to 'Edit', edit_download_path(download) %></td>
-        <td><%= link_to 'Destroy', download, method: :delete, data: { confirm: 'Are you sure?' } %></td>
-      </tr>
-    <% end %>
-  </tbody>
-</table>
-
-<br>
-
-<%= link_to 'New Download', new_download_path %>
+<% @downloads.each do |download| %>
+  <article>
+    <h3><%= download.name %></h3>
+    <p><%= download.description %></p>
+    <p class="filedetails">
+      <span>Type:</span> <%= download.type %>
+      <span>Downloads:</span> <%= download.hits %>
+    </p>
+    <p><%= link_to "Download", download_path(download.filename) %></p>
+  </article>
+<% end %>
diff --git a/config/routes.rb b/config/routes.rb
index 1486509..33b0274 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,5 +1,6 @@
 Rails.application.routes.draw do
-  resources :downloads
+  get 'downloads' => 'downloads#index'
+  get 'downloads/:filename' => 'downloads#download', :filename => /.+/, :as => 'download'
 
   # The priority is based upon order of creation: first created -> highest priority.
   # See how all your routes lay out with "rake routes".
-- 
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