module Budgets
  class InvestmentsController < ApplicationController
    include FeatureFlags
    include CommentableActions
    include FlagActions

    before_action :authenticate_user!, except: [:index, :show]

    load_and_authorize_resource :budget
    load_and_authorize_resource :investment, through: :budget, class: "Budget::Investment"

    before_action -> { flash.now[:notice] = flash[:notice].html_safe if flash[:html_safe] && flash[:notice] }
    before_action :load_ballot, only: [:index, :show]
    before_action :load_heading, only: [:index, :show]
    before_action :set_random_seed, only: :index

    feature_flag :budgets

    has_orders %w{most_voted newest oldest}, only: :show
    has_orders ->(c){ c.instance_variable_get(:@budget).balloting? ? %w{random price} : %w{random confidence_score} }, only: :index

    invisible_captcha only: [:create, :update], honeypot: :subtitle

    respond_to :html, :js

    def index
      @investments = apply_filters_and_search(@investments).send("sort_by_#{@current_order}").page(params[:page]).per(10).for_render
      set_budget_investment_votes(@investments)
    end

    def new
    end

    def show
      @commentable = @investment
      @comment_tree = CommentTree.new(@commentable, params[:page], @current_order)
      set_comment_flags(@comment_tree.comments)
      set_budget_investment_votes(@investment)
    end

    def create
      @investment.author = current_user

      if @investment.save
        notice = t('flash.actions.create.budget_investment', activity: "<a href='#{user_path(current_user, filter: :budget_investments)}'>#{t('layouts.header.my_activity_link')}</a>")
        redirect_to @investment, notice: notice, flash: { html_safe: true }
      else
        render :new
      end
    end

    def destroy
      investment.destroy
      redirect_to user_path(current_user, filter: 'budget_investments'), notice: t('flash.actions.destroy.budget_investment')
    end

    def vote
      @investment.register_selection(current_user)
      set_budget_investment_votes(@investment)
    end

    private

      def set_random_seed
        if params[:order] == 'random' || params[:order].blank?
          params[:random_seed] ||= rand(99)/100.0
          Budget::Investment.connection.execute "select setseed(#{params[:random_seed]})"
        else
          params[:random_seed] = nil
        end
      end

      def investment_params
        params.require(:investment).permit(:title, :description, :external_url, :heading_id, :terms_of_service)
      end

      def apply_filters_and_search(investments)
        if params[:heading_id].blank?
          @filter_heading_name = t('geozones.none')
        else
          @filter_heading = @budget.headings.find(params[:heading_id])
          @filter_heading_name = @filter_heading.name
        end

        investments = investments.by_heading(params[:heading_id].presence || @budget.headings.first)

        if params[:unfeasible].present?
          investments = investments.unfeasible
        else
          investments = @budget.balloting? ? investments.feasible.valuation_finished : investments.not_unfeasible
        end

        investments = investments.search(params[:search]) if params[:search].present?
        investments
      end

      def load_ballot
        @ballot = Budget::Ballot.where(user: current_user, budget: @budget).first_or_create
      end

      def load_heading
        @heading = @budget.headings.find(params[:heading_id]) if params[:geozone_id].present?
      end

  end

end