unit frm_Familias;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.ExtCtrls, Vcl.StdCtrls, Vcl.Grids,
  Vcl.DBGrids, Data.DB, Vcl.Buttons, uAppTheme, FireDAC.Stan.Param, FireDAC.Comp.Client,
  frm_BaseList;

type
  TfrmFamilias = class(TfrmBaseList)
    procedure FormShow(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
    procedure btnRefreshClick(Sender: TObject); override;
    procedure btnNewClick(Sender: TObject); override;
    procedure btnEditClick(Sender: TObject); override;
    procedure btnDeleteClick(Sender: TObject); override;
  private
    procedure dbGridMainCellClick(Column: TColumn);
    procedure dbGridMainKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
  public
    { Public declarations }
  end;

var
  frmFamilias: TfrmFamilias;

implementation

uses
  dmg_Main, frm_FamiliasEditor;

{$R *.dfm}

procedure TfrmFamilias.FormShow(Sender: TObject);
begin
  AlphaFilterField := 'descripcion';
  StatusFilterField := 'activo';
  StatusValues.Add('Activo');
  StatusValues.Add('Inactivo');

  inherited;
  frmFamilias := Self;
  OnDestroy := FormDestroy;
  pnlSearch.Visible := True;
  lblSearch.Caption := 'Buscar Familia:';

  // Desactivar el checkbox de 'Inactivo' por defecto para que solo muestre activas al iniciar
  for var I := 0 to grpStatuses.ControlCount - 1 do
  begin
    if (grpStatuses.Controls[I] is TCheckBox) and SameText(TCheckBox(grpStatuses.Controls[I]).Caption, 'Inactivo') then
    begin
      TCheckBox(grpStatuses.Controls[I]).Checked := False;
      Break;
    end;
  end;

  dbGridMain.Options := dbGridMain.Options + [dgEditing] - [dgRowSelect];
  dbGridMain.OnCellClick := dbGridMainCellClick;
  dbGridMain.OnKeyDown := dbGridMainKeyDown;
end;

procedure TfrmFamilias.FormDestroy(Sender: TObject);
begin
  if frmFamilias = Self then
    frmFamilias := nil;
end;

procedure TfrmFamilias.btnRefreshClick(Sender: TObject);
var
  LSql: string;
begin
  FQryMain.Close;
  LSql := 'SELECT id, descripcion, activo FROM ge_familias ';
  
  if Trim(edtSearch.Text) <> '' then
  begin
    LSql := LSql + 'WHERE descripcion LIKE :search ';
  end;
  LSql := LSql + 'ORDER BY descripcion';
  
  FQryMain.SQL.Text := LSql;
  
  if Trim(edtSearch.Text) <> '' then
    FQryMain.ParamByName('search').AsString := '%' + Trim(edtSearch.Text) + '%';
    
  FQryMain.Open;
  
  // Configurar FireDAC para permitir edición de ge_familias
  FQryMain.UpdateOptions.UpdateTableName := 'ge_familias';
  FQryMain.UpdateOptions.KeyFields := 'id';
  FQryMain.UpdateOptions.ReadOnly := False;
  
  if FQryMain.FindField('activo') <> nil then
    FQryMain.FieldByName('activo').ReadOnly := False;
  
  // Configurar títulos y anchos de columnas de la rejilla
  dbGridMain.Columns.Clear;
  with dbGridMain.Columns.Add do
  begin
    FieldName := 'id';
    Title.Caption := 'ID';
    Width := 250;
    ReadOnly := True;
  end;
  with dbGridMain.Columns.Add do
  begin
    FieldName := 'descripcion';
    Title.Caption := 'Descripción';
    Width := 350;
    ReadOnly := True;
  end;
  with dbGridMain.Columns.Add do
  begin
    FieldName := 'activo';
    Title.Caption := 'Activo';
    Width := 80;
    ReadOnly := False;
  end;
end;

procedure TfrmFamilias.btnEditClick(Sender: TObject);
begin
  if FQryMain.IsEmpty then Exit;
  
  if not Assigned(frmFamiliasEditor) then
    Application.CreateForm(TfrmFamiliasEditor, frmFamiliasEditor);
  
  frmFamiliasEditor.ParentForm := Self;
  frmFamiliasEditor.FamiliaId := FQryMain.FieldByName('id').AsString;
  if frmFamiliasEditor.ShowModal = mrOk then
    btnRefreshClick(nil);
end;

procedure TfrmFamilias.btnNewClick(Sender: TObject);
begin
  if not Assigned(frmFamiliasEditor) then
    Application.CreateForm(TfrmFamiliasEditor, frmFamiliasEditor);
  
  frmFamiliasEditor.ParentForm := Self;
  frmFamiliasEditor.FamiliaId := '';
  if frmFamiliasEditor.ShowModal = mrOk then
    btnRefreshClick(nil);
end;

procedure TfrmFamilias.btnDeleteClick(Sender: TObject);
var
  LFamiliaId: string;
begin
  if FQryMain.IsEmpty then Exit;
  
  if MessageDlg('¿Está seguro de que desea eliminar esta familia?' + #13#10#13#10 +
                'ATENCIÓN: Todos los artículos asociados quedarán sin familia y se les deberá asignar una nueva familia de forma manual.', 
                mtWarning, [mbYes, mbNo], 0) = mrYes then
  begin
    LFamiliaId := FQryMain.FieldByName('id').AsString;
    try
      // Desasociar los artículos de la familia antes de borrarla
      dmgMain.qryExec.Close;
      dmgMain.qryExec.SQL.Text := 'UPDATE ge_articulos SET id_familia = NULL WHERE id_familia = :id';
      dmgMain.qryExec.ParamByName('id').AsString := LFamiliaId;
      dmgMain.qryExec.ExecSQL;

      // Borrar la familia
      dmgMain.qryExec.Close;
      dmgMain.qryExec.SQL.Text := 'DELETE FROM ge_familias WHERE id = :id';
      dmgMain.qryExec.ParamByName('id').AsString := LFamiliaId;
      dmgMain.qryExec.ExecSQL;
      
      btnRefreshClick(nil);
    except
      on E: Exception do
        ShowMessage('Error al eliminar la familia: ' + E.Message);
    end;
  end;
end;

procedure TfrmFamilias.dbGridMainCellClick(Column: TColumn);
var
  LIsActive: Boolean;
begin
  if (Column.Field <> nil) and SameText(Column.FieldName, 'activo') then
  begin
    if not (FQryMain.State in [dsEdit]) then
      FQryMain.Edit;
      
    try
      LIsActive := Column.Field.AsInteger <> 0;
      if LIsActive then
        Column.Field.AsInteger := 0
      else
        Column.Field.AsInteger := 1;
    except
      Column.Field.AsBoolean := not Column.Field.AsBoolean;
    end;
    
    FQryMain.Post;
  end;
end;

procedure TfrmFamilias.dbGridMainKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
var
  LIsActive: Boolean;
begin
  if (Key = VK_SPACE) and (dbGridMain.SelectedField <> nil) and SameText(dbGridMain.SelectedField.FieldName, 'activo') then
  begin
    if not (FQryMain.State in [dsEdit]) then
      FQryMain.Edit;
      
    try
      LIsActive := dbGridMain.SelectedField.AsInteger <> 0;
      if LIsActive then
        dbGridMain.SelectedField.AsInteger := 0
      else
        dbGridMain.SelectedField.AsInteger := 1;
    except
      dbGridMain.SelectedField.AsBoolean := not dbGridMain.SelectedField.AsBoolean;
    end;
    
    FQryMain.Post;
    Key := 0; // Consumir tecla
  end;
end;

end.