# 1. Goal
The class {{P}}MOVE_PRICER calculates the price of a house move for a moving
company. Users report three defects in the calculation. Fix the class. All other
behavior stays the same.

# 2. Open questions
None.

# 3. Context
- The class {{P}}MOVE_PRICER exists in package $TMP. It is active.
- The class is public and final. It has a public constructor without parameters.
- The public section contains the type TY_PRICE and the constants C_BASE_FEE,
  C_VOLUME_FEE, C_DISTANCE_FEE, C_FLOOR_FEE, C_PACKING_FEE and C_WEEKEND_RATE.
- The class has one public method:
  CALCULATE
    IMPORTING iv_distance_km TYPE i
              iv_volume_m3   TYPE i
              iv_floor       TYPE i
              iv_packing     TYPE abap_bool
              iv_weekend     TYPE abap_bool
    RETURNING VALUE(rv_price) TYPE ty_price.
- CALCULATE gives the price of one move. The price has these parts: a base fee, a
  volume fee, a distance fee, a floor surcharge, a packing fee and a weekend
  surcharge.

# 4. Contract
- Fix the class {{P}}MOVE_PRICER in package $TMP.
- Keep the public interface. The type TY_PRICE, the constants and the signature of
  CALCULATE stay the same.
- Do not add public methods. Do not rename the class.

# 5. Business rules
The price has these parts:
1. Base fee: 250.00 EUR for each move.
2. Volume fee: 40.00 EUR for each cubic metre of the move (iv_volume_m3).
3. Distance fee: 1.20 EUR for each kilometre of the distance (iv_distance_km).
4. Floor surcharge: 15.00 EUR for each floor above the ground floor. iv_floor is
   the floor number. Floor 0 is the ground floor. If iv_floor is 0 or less, the
   surcharge is 0.00 EUR.
5. Packing fee: 180.00 EUR if iv_packing is abap_true. Else 0.00 EUR.
6. Subtotal: the sum of the parts 1 to 5.
7. Weekend surcharge: if iv_weekend is abap_true, add 12 % of the subtotal,
   rounded to 2 decimal places. Else add 0.00 EUR.
8. The price is the subtotal plus the weekend surcharge.
The input values are not negative.

Users report these defects:
- A move over 15 km is charged a distance fee for only 10 km. Every kilometre
  must be charged.
- A move to the first floor is free. The first floor must cost 15.00 EUR. A move
  to the third floor costs 30.00 EUR. It must cost 45.00 EUR.
- A weekend move is always charged a weekend surcharge of 30.00 EUR. The
  surcharge must be 12 % of the subtotal.

# 6. Constraints
- Release target: SAP_BASIS 8.16.
- Coding standards: Clean ABAP. Method length below 40 statements. No global
  variables. No comment that restates the code.
- Out of scope: no other objects.

# 7. Acceptance
- The class is active and has no syntax error.
- The hidden tests pass.
- Write your own ABAP Unit tests for the class.