unit fDiagnoses;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  fPCEBase, StdCtrls, CheckLst, ORCtrls, ORNet, ExtCtrls, Buttons, uPCE, rPCE, ORFn,
  ComCtrls, fPCEBaseMain, UBAGlobals, UBAConst, UCore, VA508AccessibilityManager;

type
  TfrmDiagnoses = class(TfrmPCEBaseMain)
    cmdDiagPrimary: TButton;
    ckbDiagProb: TCheckBox;
    procedure cmdDiagPrimaryClick(Sender: TObject);
    procedure ckbDiagProbClicked(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure btnRemoveClick(Sender: TObject);
    procedure FormResize(Sender: TObject); override;
    procedure lbxSectionClickCheck(Sender: TObject; Index: Integer);
    procedure btnOKClick(Sender: TObject);  override;
    procedure lbSectionClick(Sender: TObject);
    procedure GetEncounterDiagnoses;
    procedure lbSectionDrawItem(Control: TWinControl; Index: Integer;
      Rect: TRect; State: TOwnerDrawState);
  private
    procedure EnsurePrimaryDiag;
    function isProblem(diagnosis: TPCEDiag): Boolean;
    function isEncounterDx(problem: string): Boolean;
  protected
    procedure UpdateNewItemStr(var x: string); override;
    procedure UpdateControls; override;
  public
  end;

const
  TX_INACTIVE_CODE = 'The "#" character next to the code for this problem indicates that the problem' + #13#10 +
                     'references an ICD code that is not active as of the date of this encounter.' + #13#10 +
                     'Before you can select this problem, you must update the ICD code it contains' + #13#10 +
                     'via the Problems tab.';
  TC_INACTIVE_CODE = 'Problem Contains Inactive Code';
  TX_REDUNDANT_DX  = 'The problem that you''ve selected is already included in the list of diagnoses' + #13#10 +
                     'for this encounter. No need to select it again...';
  TC_REDUNDANT_DX  = 'Redundant Diagnosis: ';

var
  frmDiagnoses: TfrmDiagnoses;
  dxList : TStringList;

implementation

{$R *.DFM}

uses
  fEncounterFrame, uConst, UBACore, VA508AccessibilityRouter;

procedure TfrmDiagnoses.EnsurePrimaryDiag;
var
  i: Integer;
  Primary: Boolean;

begin
  with lbGrid do
  begin
    Primary := False;
    for i := 0 to Items.Count - 1 do
      if TPCEDiag(Items.Objects[i]).Primary then
        Primary := True;

    if not Primary and (Items.Count > 0) then
    begin
      GridIndex := Items.Count - 1;//0; vhaispbellc CQ 15836
      TPCEDiag(Items.Objects[Items.Count - 1]).Primary := True;
      GridChanged;
    end;
  end;
end;

procedure TfrmDiagnoses.cmdDiagPrimaryClick(Sender: TObject);
var
  gi, i: Integer;
  ADiagnosis: TPCEDiag;

begin
  inherited;
  gi := GridIndex;
  with lbGrid do for i := 0 to Items.Count - 1 do
  begin
    ADiagnosis := TPCEDiag(Items.Objects[i]);
    ADiagnosis.Primary := (gi = i);
  end;
  GridChanged;
end;

procedure TfrmDiagnoses.ckbDiagProbClicked(Sender: TObject);
var
  i: integer;
const
  PL_ITEMS = 'Problem List Items';

begin
  inherited;
  if(NotUpdating) then
  begin
    for i := 0 to lbGrid.Items.Count-1 do
      if(lbGrid.Selected[i]) then
        TPCEDiag(lbGrid.Items.Objects[i]).AddProb := (ckbDiagProb.Checked) and
                                                     (not isProblem(TPCEDiag(lbGrid.Items.Objects[i]))) and
                                                     (TPCEDiag(lbGrid.Items.Objects[i]).Category <> PL_ITEMS);
    GridChanged;
  end;
end;

procedure TfrmDiagnoses.FormCreate(Sender: TObject);
begin
  inherited;
  FTabName := CT_DiagNm;
  FPCEListCodesProc := ListDiagnosisCodes;
  FPCEItemClass := TPCEDiag;
  FPCECode := 'POV';
  FSectionTabCount := 3;
  FormResize(Self);
end;

procedure TfrmDiagnoses.btnRemoveClick(Sender: TObject);
begin
  inherited;
  EnsurePrimaryDiag;
end;

procedure TfrmDiagnoses.UpdateNewItemStr(var x: string);
begin
  inherited;
  if lbGrid.Items.Count = 0 then
    x := x + U + '1'
  else
    x := x + U + '0';
end;

function TfrmDiagnoses.isProblem(diagnosis: TPCEDiag): Boolean;
var
  i: integer;
  p, code, narr, sct: String;
begin
  result := false;
  for i := 0 to FProblems.Count - 1 do
  begin
    p := FProblems[i];
    code := piece(p, '^', 1);
    narr := piece(p, '^', 2);
    if (pos('SCT', narr) > 0) or (pos('SNOMED', narr) > 0) then
      sct := piece(piece(piece(narr, ')', 1), '(', 2), ' ', 2)
    else
      sct := '';
    narr := TrimRight(piece(narr, '(',1));
    if pos(diagnosis.Code, code) > 0 then
    begin
      result := true;
      break;
    end
    else if (sct <> '') and (pos(sct, diagnosis.Narrative) > 0) then
    begin
      result := true;
      break;
    end
    else if pos(narr, diagnosis.Narrative) > 0 then
    begin
      result := true;
      break;
    end;
  end;
end;

function TfrmDiagnoses.isEncounterDx(problem: string): Boolean;
var
  i: integer;
  dx, code, narr, pCode, pNarrative, sct: String;

function getSCT(narr: string): string;
begin
  if (pos('SNOMED CT ', narr) > 0) then
    result := copy(narr, pos('SNOMED CT ', narr) + 10, length(narr))
  else
    result := '';
end;

begin
  result := false;
  pCode := piece(problem, U, 1);
  pNarrative := piece(problem, U, 2);
  for i := 0 to lbGrid.Items.Count - 1 do
  begin
    dx := lbGrid.Items[i];
    narr := piece(dx, U, 3);
    code := piece(piece(copy(narr, pos('ICD-9-CM', narr), length(narr)), ' ', 2), ')', 1);
    sct := getSCT(piece(narr, ':', 1));
    if pos(pCode, narr) > 0 then
    begin
      result := true;
      break;
    end
    else if (sct <> '') and (pos(sct, pNarrative) > 0) then
    begin
      result := true;
      break;
    end
    else if pos(narr, pNarrative) > 0 then
    begin
      result := true;
      break;
    end;
  end;
end;

procedure TfrmDiagnoses.UpdateControls;
var
  i, j, k, PLItemCount: integer;
  OK: boolean;
const
  PL_ITEMS = 'Problem List Items';
begin
  inherited;
  if(NotUpdating) then
  begin
    BeginUpdate;
    try
      cmdDiagPrimary.Enabled := (lbGrid.SelCount = 1);
      OK := (lbGrid.SelCount > 0);
      PLItemCount := 0;
      if OK then
        for k := 0 to lbGrid.Items.Count - 1 do
        begin
          if (lbGrid.Selected[k]) then
          begin
            if (TPCEDiag(lbGrid.Items.Objects[k]).Category = PL_ITEMS) or isProblem(TPCEDiag(lbGrid.Items.Objects[k])) then
              PLItemCount := PLItemCount + 1;
          end;
        end;
      OK := OK and (PLItemCount < lbGrid.SelCount);
      ckbDiagProb.Enabled := OK;
      if(OK) then
      begin
        j := 0;
        for i := 0 to lbGrid.Items.Count-1 do
        begin
          if(lbGrid.Selected[i]) and (TPCEDiag(lbGrid.Items.Objects[i]).AddProb) then
            inc(j);
        end;
        if(j = 0) then
          ckbDiagProb.Checked := FALSE
        else
        if(j < lbGrid.SelCount) then
          ckbDiagProb.State := cbGrayed
        else
          ckbDiagProb.Checked := TRUE;
      end
      else
        ckbDiagProb.Checked := FALSE;
    finally
      EndUpdate;
    end;
  end;
end;

procedure TfrmDiagnoses.FormResize(Sender: TObject);
begin
  inherited;
  FSectionTabs[0] := -(lbxSection.width - LBCheckWidthSpace - (10 * MainFontWidth) - ScrollBarWidth);
  FSectionTabs[1] := -FSectionTabs[0]+2;
  FSectionTabs[2] := -FSectionTabs[0]+4;
  UpdateTabPos;
end;

procedure TfrmDiagnoses.lbxSectionClickCheck(Sender: TObject;
  Index: Integer);
begin
  if (not FUpdatingGrid) and (lbxSection.Checked[Index]) then
  begin
    if (Piece(lbxSection.Items[Index], U, 5) = '#') then
    begin
      InfoBox(TX_INACTIVE_CODE, TC_INACTIVE_CODE, MB_ICONWARNING or MB_OK);
      lbxSection.Checked[Index] := False;
      exit;
    end
    else if isEncounterDx(lbxSection.Items[Index]) then
    begin
      InfoBox(TX_REDUNDANT_DX, TC_REDUNDANT_DX + piece(lbxSection.Items[Index], '^',2),
        MB_ICONWARNING or MB_OK);
      lbxSection.Checked[Index] := False;
      exit;
    end;
  end;
  inherited;
  EnsurePrimaryDiag;
end;

procedure TfrmDiagnoses.btnOKClick(Sender: TObject);
begin
  inherited;
  if  BILLING_AWARE then
     GetEncounterDiagnoses;
end;

procedure TfrmDiagnoses.lbSectionClick(Sender: TObject);
begin
  inherited;
//
end;

procedure TfrmDiagnoses.GetEncounterDiagnoses;
var
  i: integer;
  dxCode, dxName: string;
  ADiagnosis: TPCEItem;
begin
  inherited;
  UBAGlobals.BAPCEDiagList.Clear;
  with lbGrid do for i := 0 to Items.Count - 1 do
  begin
    ADiagnosis := TPCEDiag(Items.Objects[i]);
    dxCode :=  ADiagnosis.Code;
    dxName :=  ADiagnosis.Narrative;
    if BAPCEDiagList.Count = 0 then
       UBAGlobals.BAPCEDiagList.Add(U + DX_ENCOUNTER_LIST_TXT);
    UBAGlobals.BAPCEDiagList.Add(dxCode + U + dxName);
  end;
end;


procedure TfrmDiagnoses.lbSectionDrawItem(Control: TWinControl;
  Index: Integer; Rect: TRect; State: TOwnerDrawState);
begin
  inherited;
  if (control as TListbox).items[index] = DX_PROBLEM_LIST_TXT then
     (Control as TListBox).Canvas.Font.Style := [fsBold]
  else
     if (control as Tlistbox).items[index] = DX_PERSONAL_LIST_TXT then
        (Control as TListBox).Canvas.Font.Style := [fsBold]
  else
     if (control as Tlistbox).items[index] =  DX_TODAYS_DX_LIST_TXT  then
        (Control as TListBox).Canvas.Font.Style := [fsBold]
  else
     if (control as Tlistbox).items[index] = DX_ENCOUNTER_LIST_TXT then
        (Control as TListBox).Canvas.Font.Style := [fsBold]
  else
     (Control as TListBox).Canvas.Font.Style := [];

  (Control as TListBox).Canvas.TextOut(Rect.Left+2, Rect.Top+1, (Control as
              TListBox).Items[Index]); {display the text }
end;

initialization
  SpecifyFormIsNotADialog(TfrmDiagnoses);

end.