# two ways to create bugs so far
# one involves deleting a varation and then editing an activity that was formerly associated with it, the wrong variation list will autoload
# the second involves doing a refresh during an edit in which you've changed the exercise, the wrong variations load

class ActivitiesController < ApplicationController
  resource_controller
  before_filter :login_required

  index.wants.html do
    if params[:user_id]
      @activities = Activity.find(:all, :conditions => { :user_id => params[:user_id] }, :order => 'performed desc' )
    else
      render :action => 'home'
    end
  end

  new_action.before do
    # allow user to insert record similar to a previously done exercise
    if params[:activity_id]
      @autoload = Activity.find params[:activity_id]
      @variation = @autoload.variation
      ['reps','rest','weight','tempo'].each do |moo|
        @activity.write_attribute(moo,@autoload.read_attribute(moo.to_sym))
      end
    else
      # find most commonly done variation
      greatest = [0,0]
      Activity.find(:all, :conditions => { :user_id => 1 }).group_by(&:variation_id).each { |vid,ex| greatest = [ex.length,vid] if ex.length }
      if greatest[1] > 0
        @variation = Variation.find greatest[1]
        @activity.weight = Activity.find(:first, :order => 'performed desc', :conditions => { :variation_id => @variation.id }).weight if @variation and @variation.exercise.name.match('pullup')
      end
      @variation ||= Variation.first
    end

    @variations = @variation.exercise.variations_collection
    @exercise_selected = @variation.exercise.id
    @variations = @variation.exercise.variations_collection
    @variation_selected = @variation.id

    # autoload the date from the last inserted record (if < 5 minutes ago)
    # for say when you're adding exercises done on a past day
    @previous = Activity.find :first, :order => 'created_at desc', :conditions => { :user_id => current_user.id }
    if @previous and @previous.performed != Date.today and Time.now < @previous.created_at + 300
      @activity.write_attribute('performed',@previous.performed)
    end

  end

  # it's possible for a variation associated with an activity to get deleted
  # rather than force an activity delete this handles it
  edit.before do
    if @activity.variation_id
      @variations = @activity.exercise.variations_collection
      @variation_selected = @activity.variation.id
      @exercise_selected = @activity.exercise.id
    else
      @variations = [['standard','']]
    end
  end

  [create,update,destroy].each do |action|
    action.wants.html do
      redirect_to my_activities_path(current_user)
    end
  end

  def find_variations
    exercise = Exercise.find(params[:exercise_id])
    render :update do |page|
      page.replace 'activity_variation_id', select(:activity, :variation_id, exercise.variations_collection, :selected => exercise.standard_variation)
    end
  end

  private
    def collection
      @collection ||= Activity.by_date
    end

end
~