CLASS {{p}}cake_pricer DEFINITION PUBLIC FINAL CREATE PUBLIC.
  PUBLIC SECTION.
    TYPES ty_price TYPE p LENGTH 8 DECIMALS 2.
    TYPES ty_filling TYPE c LENGTH 1.
    TYPES ty_decoration TYPE c LENGTH 1.

    METHODS calculate_price
      IMPORTING iv_size        TYPE i
                iv_layers      TYPE i
                iv_filling     TYPE ty_filling
                iv_decoration  TYPE ty_decoration
                iv_express     TYPE abap_bool
      RETURNING VALUE(rv_price) TYPE ty_price.
ENDCLASS.


CLASS {{p}}cake_pricer IMPLEMENTATION.
  METHOD calculate_price.
    " legacy implementation, one long method
    DATA lv_size TYPE i.
    DATA lv_layers TYPE i.
    DATA lv_total TYPE ty_price.
    DATA lv_fee TYPE ty_price.
    DATA lv_amount TYPE ty_price.
    DATA lv_rate TYPE ty_price.
    DATA lv_old_check TYPE i.

    lv_total = '12.00'.
    lv_size = iv_size.
    IF lv_size < 16.
      lv_size = 16.
    ENDIF.
    IF lv_size > 20.
      lv_rate = '0.80'.
      lv_fee = ( lv_size - 20 ) * lv_rate.
      lv_total = lv_total + lv_fee.
    ENDIF.
    lv_layers = iv_layers.
    IF lv_layers < 1.
      lv_layers = 1.
    ENDIF.
    IF lv_layers > 1.
      lv_rate = '4.50'.
      lv_fee = ( lv_layers - 1 ) * lv_rate.
      lv_total = lv_total + lv_fee.
    ENDIF.
    IF iv_filling = 'V'.
      lv_amount = '3.00'.
      lv_total = lv_total + lv_amount.
    ELSEIF iv_filling = 'C'.
      lv_amount = '4.00'.
      lv_total = lv_total + lv_amount.
    ELSEIF iv_filling = 'F'.
      lv_amount = '5.50'.
      lv_total = lv_total + lv_amount.
    ELSEIF iv_filling = 'N'.
      lv_amount = '0.00'.
      lv_total = lv_total + lv_amount.
    ELSE.
      lv_amount = '3.00'.
      lv_total = lv_total + lv_amount.
    ENDIF.
    IF iv_decoration = 'F'.
      lv_amount = '6.00'.
      lv_total = lv_total + lv_amount.
    ELSEIF iv_decoration = 'P'.
      IF lv_size >= 24.
        lv_amount = '9.50'.
        lv_total = lv_total + lv_amount.
      ELSE.
        lv_amount = '0.00'.
        lv_total = lv_total + lv_amount.
      ENDIF.
    ELSEIF iv_decoration = 'S'.
      lv_amount = '12.00'.
      lv_total = lv_total + lv_amount.
    ELSE.
      lv_amount = '0.00'.
      lv_total = lv_total + lv_amount.
    ENDIF.
    IF iv_express = abap_true.
      lv_rate = '1.25'.
      lv_fee = lv_total * lv_rate.
      lv_total = lv_fee.
    ENDIF.
    lv_amount = '15.00'.
    IF lv_total < lv_amount.
      lv_total = lv_amount.
    ENDIF.
    rv_price = lv_total.
  ENDMETHOD.
ENDCLASS.