require "camping"
require "camping/session"
require "pathname"
require "markaby"

Markaby::Builder.set(:indent, 2)

Camping.goes :Anne

unless defined? PUBLIC_DIR
  PUBLIC_DIR = Pathname.new(__FILE__).dirname + "public"
  IMAGE_DIR = PUBLIC_DIR + "images"
end

module Anne

  include Camping::Session
  secret "JeMoeder"

  def self.create
    Anne::Models.create_schema
  end

end

module Anne::Models

  class User < Base
  end

  class Vote < Base
    belongs_to :user
  end

  class BasicFields < V 1.0
    def self.up
      create_table User.table_name do |t|
        t.string :study, :gender, :spaciousness, :email, :comments
        t.integer :study_year
        t.boolean :colorblind, :prize, :results
        t.timestamps
      end
      create_table Vote.table_name do |t|
        t.string :image, :choice
        t.integer :user_id
      end
    end

    def self.down
      drop_table User.table_name
      drop_table Vote.table_name
    end
  end

end

module Anne::Helpers

  def next_image
    all_images = 
      Pathname.glob(IMAGE_DIR + "*-l.png").map { |img| img.basename.to_s.sub("-l.png", "") }
    all_votes = 
      Anne::Models::Vote.find(:all, 
                              :conditions => { :user_id => @state["user"].id })
    voted_images = all_votes.map { |vote| vote.image }
    remaining_images = all_images - voted_images
    return nil, 100 if remaining_images.empty?
    return remaining_images.sort_by { rand }.first,
           100 - (remaining_images.length * 100.0 / all_images.length).ceil
  end

end

module Anne::Controllers

  class Index
    def get
      render :intro
    end
  end

  class Start
    def get
      return redirect Vote if @state["user"]
      render :start
    end

    def post
      @state["user"] = User.create(
        :study => @input.user_study,
        :study_year => @input.user_study_year,
        :gender => @input.user_gender,
        :colorblind => @input.user_colorblind == "ja",
        :spaciousness => @input.user_spaciousness)
      redirect Vote
    end
  end

  class Vote
    def get
      return redirect Index if not @state["user"]
      image, progress = next_image
      return redirect Finish if image.nil?
      render :vote, image, progress
    end

    def post
      choice = if @input["left.x"] then "left"
               elsif @input["right.x"] then "right"
               else raise "no choice made!"
               end
      vote = Anne::Models::Vote.create( :user_id => @state["user"].id,
                                        :image => @input.image,
                                        :choice => choice )
      redirect Vote
    end
  end

  class ImageX
    def get(file)
      unless file =~ /\.\./ 
        headers["Content-Type"] = "image/png"
        headers["X-Sendfile"] = 
          (IMAGE_DIR.relative_path_from(PUBLIC_DIR) + file).to_s
      else
        @status = 403
        "You're not allowed to retrieve #{file}!"
      end
    end
  end

  class Finish
    def get
      return redirect Index if not @state["user"]
      return redirect Vote unless next_image.first.nil?
      return redirect Thanks unless @state["user"].results.nil?
      render :finish
    end

    def post
      user = @state["user"]
      raise "unknown user" if user.nil?
      user.email = @input.email
      user.prize = !@input.prize.nil?
      user.results = !@input.results.nil?
      user.comments = @input.comments
      user.save
      redirect Thanks
    end
  end

  class Style < R '/style\.css'
    STYLE = File.read(__FILE__).gsub(/.*__END__/m, '')

    def get
      @headers['Content-Type'] = 'text/css; charset=utf-8'
      STYLE
    end
  end

  class Thanks
    def get
      render :thanks
    end
  end

end

module Anne::Views

  def layout
    xhtml_strict do
      head do
        title "Enquête ruimtelijke effecten"
        link :rel => "stylesheet", :type => "text/css",
             :media => "screen", :href => "/style.css"
      end
      body do
        div.header! do
          h1 do
            span.left "Enquête ruimtelijke effecten" 
            img.right :src => R(ImageX, "tuelogo.gif"), 
                :alt => "[TU/e logo]", 
                :style => "right: 180px";
            img.right :src => R(ImageX, "philipslogo.gif"), 
                :alt => "[Philips logo]",
                :style => "padding: 5px 5px; margin: 13px 0px; background: white;"
          end
        end
        div.content! { self << yield }
        div.footer! do
          p "Copyright © 2010 Anne Pijl, Bram Senders, Paul van Tilburg"
        end
      end
    end
  end

  def intro
    p "Met deze enquête worden een aantal ruimtelijke effecten onderzocht. " \
      "Je krijgt 45 keer twee afbeeldingen te zien. Je kiest welke afbeelding" \
      " je ruimtelijker ervaart. In welke afbeelding zie je meer diepte, " \
      "welke afbeelding lijkt jou het meest 3-dimensionaal? Als je het niet " \
      "weet, klik je op een willekeurige afbeelding. De test duurt 5 " \
      "minuten. Succes!"

    p "Doe de test volledig om kans te maken op eerste prijs van een " \
      "Philips Living Colors lamp of de tweede prijs van 20 euro."
    p "– Anne Pijl"

    form :action => R(Start), :method => :get do
      input :type => "submit", :value => "Ga verder"
    end
  end

  def make_select(label_name, name, options)
    p do
      label label_name, :for => name
      select :name => name do
        options.each { |option_str| option option_str }
      end
    end
  end

  def start
    h2 "Persoonlijke karakteristieken"
    p "Graag zou ik ten behoeve van de statistiek het volgende van je willen weten:"

    form :action => R(Start), :method => :post do
      make_select "Faculteit", "user_study", 
        ["niet van toepassing", 
         "Biomedische Technologie",
         "Bouwkunde",
         "Electrical Engineering",
         "Industrial Design",
         "Scheikundige Technologie",
         "Industrial Engineering & Innovation Sciences",
         "Technische Natuurkunde",
         "Werktuigbouwkunde",
         "Wiskunde & Informatica"]
      make_select "Studiejaar", "user_study_year", 
        ["niet van toepassing"] + (1998..2009).to_a
      make_select "Geslacht", "user_gender", ["", "man", "vrouw"]
      make_select "Ben je kleurenblind?", "user_colorblind", ["nee", "ja"]
      make_select "Vind je dat je een goed ruimtelijk voorstellingsvermogen hebt?", 
        "user_spaciousness", ["neutraal", "ja", "nee"]

      input :type => "submit", :value => "Start de enquête!"
    end
  end

  def vote(image, progress = 0)
    h2 "Welk beeld is ruimtelijker?"
    form.images! :action => R(Vote), :method => :post do
      input :type => "hidden", :name => "image", :value => image
      input :type => "image", :src => R(ImageX, "#{image}-l.png"), 
            :name => "left", :class => "left image"
      input :type => "image", :src => R(ImageX, "#{image}-r.png"), 
            :name => "right", :class => "right image"
    end
    div.progressbar! do
      div.done! :style => "width: #{progress}%" do end
    end
  end

  def finish
    h2 "Dank je wel voor het meedoen aan dit onderzoek."
    p "Als je geïnteresseerd bent in de resultaten van de enquête of je wilt " \
      "meedingen naar de Philips Living Colors lamp of de prijs van 20 " \
      "euro, vul dan hier je e-mailadres in."

    form :action => R(Finish), :method => :post do
      p do
        label "E-mailadres", :for => "email"
        input :type => "text", :name => "email"
      end
      p do
        input :type => "checkbox", :name => "prize", :checked => true
        label "Ik wil meedingen naar de prijs.", :for => "prize"
      end
      p do
        input :type => "checkbox", :name => "results", :checked => true
        label "Ik wil de resultaten van het onderzoek ontvangen.", :for => "results"
      end

      p "Je e-mailadres wordt enkel gebruikt voor de enquête-resultaten en " \
        "om je op de hoogte te stellen als je gewonnen hebt."

      p do
        label "Opmerkingen over dit onderzoek", :for => "comments"
        br
        textarea :name => "comments", :cols => 80, :rows => 5
      end

      input :type => "submit", :value => "Verstuur"
    end
  end

  def thanks
    h2 "Bedankt!"

    p "Je antwoorden zijn verstuurd."
  end

end

__END__
/* Style sheet for the Anne Survey Camping app */

html { background: #333; }

body {
  margin: 10px auto;
  padding: 10px;
  width: 960px;
  font-family: Verdana, Geneva, Arial, Helvetica, sans-serif;
  color: white;
  background-color: black;
  -webkit-border-radius: 12px;
  -moz-border-radius: 12px;
  border-radius: 12px;
}

#header { position: relative; height: 73px; }
#header span { bottom: 10px; }

#images { position: relative; height: 470px; }
.image { border: thin solid #888; }
.left  { position: absolute; left: 0px; }
.right { position: absolute; right: 0px; }

#progressbar {
  height: 6px;
  margin-top: 8px;
  background-color: #101073;
}

#progressbar #done {
  height: 6px;
  background-color: #d6007b;
}

#footer {
  padding: 0px 0px 0px 8px;
  margin-top: 14px;
  border-top: thin #eee solid;
  font-size: 69.4%;
}