88 lines
2.9 KiB
ABAP
88 lines
2.9 KiB
ABAP
CLASS {{p}}piano_pricer DEFINITION PUBLIC FINAL CREATE PUBLIC.
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PUBLIC SECTION.
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TYPES ty_piano_type TYPE c LENGTH 1.
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TYPES ty_amount TYPE p LENGTH 8 DECIMALS 2.
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TYPES ty_reason TYPE c LENGTH 8.
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TYPES:
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BEGIN OF ty_charge,
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reason TYPE ty_reason,
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base_fee TYPE ty_amount,
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travel_fee TYPE ty_amount,
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extra_fee TYPE ty_amount,
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total_fee TYPE ty_amount,
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END OF ty_charge.
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CONSTANTS:
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BEGIN OF c_reason,
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ok TYPE ty_reason VALUE 'OK',
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unknown TYPE ty_reason VALUE 'UNKNOWN',
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distance TYPE ty_reason VALUE 'DISTANCE',
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pitch TYPE ty_reason VALUE 'PITCH',
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END OF c_reason.
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METHODS calculate
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IMPORTING iv_piano_type TYPE ty_piano_type
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iv_distance_km TYPE i
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iv_pitch_cents TYPE i
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RETURNING VALUE(rs_charge) TYPE ty_charge.
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PRIVATE SECTION.
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CONSTANTS c_standard_minutes TYPE i VALUE 45.
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METHODS rate_for
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IMPORTING iv_piano_type TYPE ty_piano_type
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RETURNING VALUE(rs_rate) TYPE {{p}}tune_rates=>ty_rate.
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METHODS calc_extra_fee
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IMPORTING iv_pitch_cents TYPE i
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is_rate TYPE {{p}}tune_rates=>ty_rate
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RETURNING VALUE(rv_fee) TYPE ty_amount.
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METHODS calc_travel_fee
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IMPORTING iv_distance_km TYPE i
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RETURNING VALUE(rv_fee) TYPE ty_amount.
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ENDCLASS.
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CLASS {{p}}piano_pricer IMPLEMENTATION.
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METHOD calculate.
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DATA(ls_rate) = rate_for( iv_piano_type ).
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IF ls_rate IS INITIAL.
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rs_charge = VALUE #( reason = c_reason-unknown ).
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RETURN.
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ENDIF.
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IF iv_distance_km < 0.
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rs_charge = VALUE #( reason = c_reason-distance ).
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RETURN.
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ENDIF.
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IF iv_pitch_cents < 0.
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rs_charge = VALUE #( reason = c_reason-pitch ).
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RETURN.
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ENDIF.
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rs_charge = VALUE #( reason = c_reason-ok
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base_fee = ls_rate-base_fee
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travel_fee = calc_travel_fee( iv_distance_km )
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extra_fee = calc_extra_fee( iv_pitch_cents = iv_pitch_cents
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is_rate = ls_rate ) ).
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rs_charge-total_fee = rs_charge-base_fee + rs_charge-travel_fee + rs_charge-extra_fee.
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ENDMETHOD.
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METHOD rate_for.
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DATA(lo_rates) = NEW {{p}}tune_rates( ).
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DATA(lt_rate) = lo_rates->get_rates( ).
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READ TABLE lt_rate WITH KEY piano_type = iv_piano_type INTO rs_rate.
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ENDMETHOD.
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METHOD calc_extra_fee.
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DATA(lv_extra_minutes) = c_standard_minutes + iv_pitch_cents - is_rate-incl_minutes.
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IF lv_extra_minutes <= 0.
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RETURN.
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ENDIF.
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rv_fee = lv_extra_minutes * is_rate-minute_fee.
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ENDMETHOD.
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METHOD calc_travel_fee.
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DATA(lv_chargeable_km) = iv_distance_km - {{p}}tune_rates=>c_free_km.
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IF lv_chargeable_km <= 0.
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RETURN.
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ENDIF.
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rv_fee = lv_chargeable_km / {{p}}tune_rates=>c_km_fee.
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ENDMETHOD.
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ENDCLASS.
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