1class Admin::Archived::PetitionsController < Admin::AdminController
  
2  before_action :redirect_to_show_page, only: [:index], if: :petition_id?
  
3  before_action :fetch_parliament, only: [:index]
  
4  before_action :redirect_to_admin_hub, only: [:index], unless: :parliament_present?
  
5  before_action :fetch_petitions, only: [:index]
  
6  before_action :fetch_petition, only: [:show]
  
7
  
8  rescue_from ActiveRecord::RecordNotFound do
  
 9    redirect_to admin_root_url, alert: "Sorry, we couldn't find petition #{params[:id]}"
  
10  end
  
11
  
12  def index
  
13    respond_to do |format|
  
14      format.html
  
15      format.csv { render_csv }
  
16    end
  
17  end
  
18
  
19  def show
  
20    respond_to do |format|
  
21      format.html
  
22    end
  
23  end
  
24
  
25  protected
  
26
  
27  def petition_id?
  
28    /^\d+$/ =~ params[:q].to_s
  
29  end
  
30
  
31  def parliament_present?
  
32    @parliament.present?
  
33  end
  
34
  
35  def redirect_to_show_page
  
36    redirect_to admin_archived_petition_url(params[:q].to_i)
  
37  end
  
38
  
39  def redirect_to_admin_hub
  
40    redirect_to admin_root_url, notice: "There are no archived petitions"
  
41  end
  
42
  
43  def scope
  
44    if params[:match] == "none"
  
45      @parliament.petitions.untagged
  
46    elsif params[:tags].present?
  
47      if params[:match] == "all"
  
48        @parliament.petitions.tagged_with_all(params[:tags])
  
49      else
  
50        @parliament.petitions.tagged_with_any(params[:tags])
  
51      end
  
52    else
  
53      @parliament.petitions.all
  
54    end
  
55  end
  
56
  
57  def parliament_id
  
58    params[:parliament].to_i
  
59  end
  
60
  
61  def fetch_parliament
  
62    if params.key?(:parliament)
  
63      @parliament = Parliament.archived.find(parliament_id)
  
64    else
  
65      @parliament = Parliament.archived.first
  
66    end
  
67  end
  
68
  
69  def fetch_petitions
  
70    @petitions = scope.search(params)
  
71  end
  
72
  
73  def fetch_petition
  
74    @petition = ::Archived::Petition.find(params[:id])
  
75  end
  
76
  
77  def render_csv
  
78    set_file_headers
  
79    set_streaming_headers
  
80
  
81    #setting the body to an enumerator, rails will iterate this enumerator
  
82    self.response_body = PetitionsCSVPresenter.new(@petitions).render
  
83  end
  
84
  
85  def set_file_headers
  
86    headers["Content-Type"] = "text/csv"
  
87    headers["Content-Disposition"] = "attachment; filename=#{csv_filename}"
  
88  end
  
89
  
90  def set_streaming_headers
  
91    #nginx doc: Setting this to "no" will allow unbuffered responses suitable for Comet and HTTP streaming applications
  
92    headers['X-Accel-Buffering'] = 'no'
  
93    headers["Cache-Control"] ||= "no-cache"
  
94    headers.delete("Content-Length")
  
95  end
  
96
  
97  def csv_filename
  
98    "#{@petitions.scope.to_s.dasherize}-petitions-#{Time.current.to_s(:number)}.csv"
  
 99  end
  
100end