REPORT {{p}}sharp_sum.

DATA gv_customer TYPE {{p}}sharpen-customer.

PARAMETERS p_from TYPE d OBLIGATORY.
SELECT-OPTIONS s_cust FOR gv_customer.

CLASS lcl_report DEFINITION FINAL.
  PUBLIC SECTION.
    TYPES tt_customer TYPE RANGE OF {{p}}sharpen-customer.
    TYPES:
      BEGIN OF ty_line,
        customer TYPE {{p}}sharpen-customer,
        knives   TYPE i,
        fee      TYPE {{p}}kntype-price,
      END OF ty_line.
    TYPES tt_line TYPE STANDARD TABLE OF ty_line WITH EMPTY KEY.
    METHODS select_totals
      IMPORTING iv_from         TYPE d
                it_customer     TYPE tt_customer
      RETURNING VALUE(rt_lines) TYPE tt_line.
    METHODS display
      CHANGING ct_lines TYPE tt_line.
ENDCLASS.

CLASS lcl_report IMPLEMENTATION.
  METHOD select_totals.
    SELECT s~customer,
           SUM( s~knife_count ) AS knives,
           SUM( s~knife_count * t~price ) AS fee
      FROM {{p}}sharpen AS s
      INNER JOIN {{p}}kntype AS t ON t~type_id = s~knife_type
      WHERE s~sharp_date >= @iv_from
        OR s~customer IN @it_customer
      GROUP BY s~customer
      ORDER BY fee DESCENDING
      INTO CORRESPONDING FIELDS OF TABLE @rt_lines.
  ENDMETHOD.

  METHOD display.
    TRY.
        cl_salv_table=>factory( IMPORTING r_salv_table = DATA(lo_alv)
                                CHANGING  t_table      = ct_lines ).
        lo_alv->display( ).
      CATCH cx_salv_msg INTO DATA(lx_error).
        MESSAGE lx_error TYPE 'I' DISPLAY LIKE 'E'.
    ENDTRY.
  ENDMETHOD.
ENDCLASS.

START-OF-SELECTION.
  DATA(go_report) = NEW lcl_report( ).
  DATA(gt_lines) = go_report->select_totals( iv_from = p_from it_customer = s_cust[] ).
  go_report->display( CHANGING ct_lines = gt_lines ).

CLASS ltc_report DEFINITION FINAL FOR TESTING DURATION SHORT RISK LEVEL HARMLESS.
  PRIVATE SECTION.
    CLASS-DATA go_env TYPE REF TO if_osql_test_environment.
    CLASS-METHODS class_setup.
    CLASS-METHODS class_teardown.
    METHODS totals_per_customer FOR TESTING.
    METHODS unknown_type_skipped FOR TESTING.
ENDCLASS.

CLASS ltc_report IMPLEMENTATION.
  METHOD class_setup.
    go_env = cl_osql_test_environment=>create(
      i_dependency_list = VALUE #( ( '{{P}}SHARPEN' ) ( '{{P}}KNTYPE' ) ) ).

    DATA lt_types TYPE STANDARD TABLE OF {{p}}kntype WITH EMPTY KEY.
    lt_types = VALUE #( ( type_id = 'CHEF' price = '2.00' )
                        ( type_id = 'BONE' price = '3.00' ) ).
    go_env->insert_test_data( lt_types ).

    DATA lt_items TYPE STANDARD TABLE OF {{p}}sharpen WITH EMPTY KEY.
    lt_items = VALUE #( ( item_id = 1 customer = 'A' knife_type = 'CHEF' knife_count = 10 sharp_date = '20260101' )
                        ( item_id = 2 customer = 'A' knife_type = 'BONE' knife_count = 2  sharp_date = '20260102' )
                        ( item_id = 3 customer = 'B' knife_type = 'CHEF' knife_count = 5  sharp_date = '20260101' )
                        ( item_id = 4 customer = 'B' knife_type = 'PLAS' knife_count = 7  sharp_date = '20260101' ) ).
    go_env->insert_test_data( lt_items ).
  ENDMETHOD.

  METHOD class_teardown.
    go_env->destroy( ).
  ENDMETHOD.

  METHOD totals_per_customer.
    DATA(lt_lines) = NEW lcl_report( )->select_totals(
      iv_from     = '20260101'
      it_customer = VALUE #( ( sign = 'E' option = 'EQ' low = 'X' ) ) ).
    cl_abap_unit_assert=>assert_equals( exp = 2 act = lines( lt_lines ) ).
    cl_abap_unit_assert=>assert_equals( exp = 'A' act = lt_lines[ 1 ]-customer ).
    cl_abap_unit_assert=>assert_equals( exp = 12 act = lt_lines[ 1 ]-knives ).
    cl_abap_unit_assert=>assert_equals( exp = CONV {{p}}kntype-price( 26 ) act = lt_lines[ 1 ]-fee ).
  ENDMETHOD.

  METHOD unknown_type_skipped.
    DATA(lt_lines) = NEW lcl_report( )->select_totals(
      iv_from     = '20260101'
      it_customer = VALUE #( ( sign = 'I' option = 'EQ' low = 'B' ) ) ).
    cl_abap_unit_assert=>assert_equals( exp = 1 act = lines( lt_lines ) ).
    cl_abap_unit_assert=>assert_equals( exp = 5 act = lt_lines[ 1 ]-knives ).
  ENDMETHOD.
ENDCLASS.