module Admin
  class BillingInvoicesController < BaseController
    before_action :set_club
    before_action :set_invoice, only: %i[edit update]

    def index
      @payments = @club.billing_payments.recent.includes(:invoice)
      @invoices = @club.billing_invoices.recent.includes(:billing_payment, pdf_attachment: :blob)
    end

    def new
      @payment = @club.billing_payments.find_by(id: params[:billing_payment_id]) if params[:billing_payment_id].present?
      if @payment&.invoice.present?
        redirect_to edit_admin_club_billing_invoice_path(@club, @payment.invoice), alert: "Esiste già una fattura per questo pagamento."
        return
      end

      @invoice = @club.billing_invoices.build(
        issued_on: Date.current,
        currency: "eur",
        source: "manual",
        status: "draft",
        billing_payment: @payment,
        amount_cents: @payment&.amount_cents,
        number: suggested_invoice_number
      )
    end

    def create
      @invoice = @club.billing_invoices.build(invoice_params)
      @invoice.source = "manual"
      @invoice.status = "draft"

      if @invoice.save
        redirect_to edit_admin_club_billing_invoice_path(@club, @invoice),
                    notice: "Bozza fattura #{@invoice.number} creata. Carica il PDF e invia al cliente."
      else
        @payment = @invoice.billing_payment
        flash.now[:alert] = @invoice.errors.full_messages.join(", ")
        render :new, status: :unprocessable_entity
      end
    end

    def edit
      @payment = @invoice.billing_payment
    end

    def update
      @invoice.assign_attributes(invoice_params.except(:pdf))

      if issuing?
        Billing::IssueInvoice.call(invoice: @invoice, pdf: params.dig(:billing_invoice, :pdf))
        redirect_to admin_club_billing_invoices_path(@club),
                    notice: "Fattura #{@invoice.number} emessa e inviata a #{@club.billing_email}."
      elsif @invoice.save
        redirect_to admin_club_billing_invoices_path(@club), notice: "Fattura #{@invoice.number} aggiornata."
      else
        @payment = @invoice.billing_payment
        flash.now[:alert] = @invoice.errors.full_messages.join(", ")
        render :edit, status: :unprocessable_entity
      end
    rescue Billing::IssueInvoice::Error => e
      @payment = @invoice.billing_payment
      flash.now[:alert] = e.message
      render :edit, status: :unprocessable_entity
    end

    private

    def set_club
      @club = Club.find(params[:club_id])
    end

    def set_invoice
      @invoice = @club.billing_invoices.find(params[:id])
    end

    def issuing?
      params[:commit].to_s == "Emetti e invia via email"
    end

    def suggested_invoice_number
      year = Date.current.year
      count = @club.billing_invoices.where("number LIKE ?", "%#{year}%").count + 1
      "#{year}/#{count}"
    end

    def invoice_params
      params.require(:billing_invoice).permit(
        :number,
        :issued_on,
        :amount_cents,
        :amount_euros,
        :currency,
        :billing_payment_id,
        :notes,
        :pdf
      ).tap do |p|
        if p[:amount_euros].present?
          p[:amount_cents] = (p.delete(:amount_euros).to_f * 100).round
        end
      end
    end
  end
end