class Promoter::PromotionCodesController < ApplicationController
  before_action :authenticate_user!
  before_action :set_event
  before_action :set_promotion_code, only: [ :edit, :update, :destroy ]

  # GET /promoter/events/:event_id/promotion_codes
  # Display all promotion codes for a specific event
  def index
    @promotion_codes = @event.promotion_codes.includes(:user)
  end


  # GET /promoter/events/:event_id/promotion_codes/new
  # Show form to create a new promotion code
  def new
    @promotion_code = @event.promotion_codes.new
  end

  # GET /promoter/events/:event_id/promotion_codes/:id/edit
  # Show form to edit an existing promotion code
  def edit
  end

  # POST /promoter/events/:event_id/promotion_codes
  # Create a new promotion code for the event
  def create
    @promotion_code = @event.promotion_codes.new(promotion_code_params_with_conversion)
    @promotion_code.user = current_user

    if @promotion_code.save
      redirect_to promoter_event_promotion_codes_path(@event), notice: "Promotion code was successfully created."
    else
      render :new, status: :unprocessable_entity
    end
  end

  # PATCH/PUT /promoter/events/:event_id/promotion_codes/:id
  # Update an existing promotion code
  def update
    if @promotion_code.update(promotion_code_params_with_conversion)
      redirect_to promoter_event_promotion_codes_path(@event), notice: "Promotion code was successfully updated."
    else
      render :edit, status: :unprocessable_entity
    end
  end

  # DELETE /promoter/events/:event_id/promotion_codes/:id
  # Delete a promotion code
  def destroy
    @promotion_code.destroy
    redirect_to promoter_event_promotion_codes_path(@event), notice: "Promotion code was successfully destroyed."
  end

  private

  # Find the event based on the URL parameter
  def set_event
    @event = Event.find(params[:event_id])
  end

  # Find the promotion code based on the URL parameter
  def set_promotion_code
    @promotion_code = @event.promotion_codes.find(params[:id])
  end

  # Strong parameters for promotion code form (accepts euros for display)
  def promotion_code_params
    params.require(:promotion_code).permit(:code, :discount_amount_euros, :expires_at, :active, :usage_limit)
  end

  # Convert euros to cents for database storage
  # The form displays euros for user convenience, but the database stores cents
  def promotion_code_params_with_conversion
    params = promotion_code_params
    if params[:discount_amount_euros].present?
      # Convert euros to cents (e.g., 20.50 -> 2050)
      params[:discount_amount_cents] = (params[:discount_amount_euros].to_f * 100).to_i
      params.delete(:discount_amount_euros) # Remove the temporary euro parameter
    end
    params
  end
end