REPORT {{p}}stock_bal.

DATA gv_plant TYPE {{p}}movmt-plant.

PARAMETERS p_from TYPE d OBLIGATORY.
PARAMETERS p_to   TYPE d OBLIGATORY.
SELECT-OPTIONS s_plant FOR gv_plant.

CLASS lcl_report DEFINITION FINAL.
  PUBLIC SECTION.
    TYPES:
      BEGIN OF ty_line,
        material    TYPE {{p}}movmt-material,
        receipt_qty TYPE i,
        issue_qty   TYPE i,
        balance     TYPE i,
      END OF ty_line,
      tt_line  TYPE STANDARD TABLE OF ty_line WITH EMPTY KEY,
      tt_plant TYPE RANGE OF {{p}}movmt-plant.
    METHODS select_balances
      IMPORTING iv_from         TYPE d
                iv_to           TYPE d
                it_plant        TYPE tt_plant
      RETURNING VALUE(rt_lines) TYPE tt_line.
    METHODS display
      CHANGING ct_lines TYPE tt_line.
ENDCLASS.

CLASS lcl_report IMPLEMENTATION.
  METHOD select_balances.
    SELECT material,
           SUM( CASE WHEN move_type = '101' OR move_type = '201'
                     THEN quantity
                     ELSE 0 END ) AS receipt_qty,
           SUM( CASE WHEN move_type = '261' OR move_type = '262'
                     THEN quantity
                     ELSE 0 END ) AS issue_qty
      FROM {{p}}movmt
      WHERE move_date >= @iv_from
        AND move_date <= @iv_to
        AND plant IN @it_plant
        AND move_type IN ( '101', '201', '261', '262' )
      GROUP BY material
      INTO CORRESPONDING FIELDS OF TABLE @rt_lines.

    LOOP AT rt_lines ASSIGNING FIELD-SYMBOL(<ls_line>).
      <ls_line>-balance = <ls_line>-receipt_qty - <ls_line>-issue_qty.
    ENDLOOP.

    SORT rt_lines BY balance DESCENDING.
  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_balances( iv_from  = p_from
                                               iv_to    = p_to
                                               it_plant = s_plant[] ).
  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 balances_per_material FOR TESTING.
    METHODS plant_filter FOR TESTING.
    METHODS negative_balance FOR TESTING.
ENDCLASS.

CLASS ltc_report IMPLEMENTATION.
  METHOD class_setup.
    go_env = cl_osql_test_environment=>create( i_dependency_list = VALUE #( ( '{{P}}MOVMT' ) ) ).
    DATA lt_movmt TYPE STANDARD TABLE OF {{p}}movmt WITH EMPTY KEY.
    lt_movmt = VALUE #(
      ( move_id = 1 material = 'MAT-A' plant = '1000' move_date = '20260105' move_type = '101' quantity = 100 )
      ( move_id = 2 material = 'MAT-A' plant = '1000' move_date = '20260110' move_type = '261' quantity = 30 )
      ( move_id = 3 material = 'MAT-B' plant = '2000' move_date = '20260112' move_type = '201' quantity = 40 )
      ( move_id = 4 material = 'MAT-B' plant = '2000' move_date = '20260113' move_type = '262' quantity = 90 )
      ( move_id = 5 material = 'MAT-C' plant = '2000' move_date = '20260112' move_type = '999' quantity = 500 ) ).
    go_env->insert_test_data( lt_movmt ).
  ENDMETHOD.

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

  METHOD balances_per_material.
    DATA(lt_lines) = NEW lcl_report( )->select_balances(
      iv_from = '20260101' iv_to = '20260131' it_plant = VALUE #( ) ).
    cl_abap_unit_assert=>assert_equals( exp = 2 act = lines( lt_lines ) ).
    cl_abap_unit_assert=>assert_equals( exp = 'MAT-A' act = lt_lines[ 1 ]-material ).
    cl_abap_unit_assert=>assert_equals( exp = 70 act = lt_lines[ 1 ]-balance ).
    cl_abap_unit_assert=>assert_equals( exp = 'MAT-B' act = lt_lines[ 2 ]-material ).
    cl_abap_unit_assert=>assert_equals( exp = -50 act = lt_lines[ 2 ]-balance ).
  ENDMETHOD.

  METHOD plant_filter.
    DATA(lt_lines) = NEW lcl_report( )->select_balances(
      iv_from  = '20260101'
      iv_to    = '20260131'
      it_plant = VALUE #( ( sign = 'I' option = 'EQ' low = '1000' ) ) ).
    cl_abap_unit_assert=>assert_equals( exp = 1 act = lines( lt_lines ) ).
    cl_abap_unit_assert=>assert_equals( exp = 'MAT-A' act = lt_lines[ 1 ]-material ).
    cl_abap_unit_assert=>assert_equals( exp = 30 act = lt_lines[ 1 ]-issue_qty ).
  ENDMETHOD.

  METHOD negative_balance.
    DATA(lt_lines) = NEW lcl_report( )->select_balances(
      iv_from  = '20260101'
      iv_to    = '20260131'
      it_plant = VALUE #( ( sign = 'I' option = 'EQ' low = '2000' ) ) ).
    cl_abap_unit_assert=>assert_equals( exp = 1 act = lines( lt_lines ) ).
    cl_abap_unit_assert=>assert_equals( exp = 'MAT-B' act = lt_lines[ 1 ]-material ).
    cl_abap_unit_assert=>assert_equals( exp = -50 act = lt_lines[ 1 ]-balance ).
  ENDMETHOD.
ENDCLASS.