# frozen_string_literal: true

module Admin
  class CostEntriesController < Admin::BaseController
    before_action :set_entry, only: %i[edit update destroy]

    def new
      @entry = PlatformCostEntry.new(
        month: parse_month(params[:month]) || Time.zone.today.beginning_of_month,
        label: PlatformCostEntry::DEFAULT_LABEL
      )
    end

    def create
      @entry = PlatformCostEntry.new(entry_attributes)
      if @entry.save
        redirect_to admin_costs_path(month: month_param(@entry.month)), notice: t("admin.flash.cost_entry_created")
      else
        flash.now[:alert] = @entry.errors.full_messages.join(", ")
        render :new, status: :unprocessable_entity
      end
    end

    def edit; end

    def update
      if @entry.update(entry_attributes)
        redirect_to admin_costs_path(month: month_param(@entry.month)), notice: t("admin.flash.cost_entry_updated")
      else
        flash.now[:alert] = @entry.errors.full_messages.join(", ")
        render :edit, status: :unprocessable_entity
      end
    end

    def destroy
      month = @entry.month
      @entry.destroy!
      redirect_to admin_costs_path(month: month_param(month)), notice: t("admin.flash.cost_entry_destroyed")
    end

    private

    def set_entry
      @entry = PlatformCostEntry.find(params[:id])
    end

    def entry_attributes
      attrs = params.require(:platform_cost_entry).permit(:month, :label, :amount_euros, :notes)
      if attrs[:amount_euros].present?
        attrs[:amount_cents] = Billing::EuroAmount.to_cents(attrs.delete(:amount_euros))
      end
      attrs[:notes] = nil if attrs[:notes].blank?
      attrs
    end

    def parse_month(value)
      return nil if value.blank?

      Date.strptime(value.to_s, "%Y-%m").beginning_of_month
    rescue ArgumentError, TypeError
      nil
    end

    def month_param(date)
      date.strftime("%Y-%m")
    end
  end
end