Copy and Past NamedRange/Whole Line - google-apps-script

Question

I've been using the script below to copy and paste all previous rows in an inserted row before on Google Sheets.
var spreadsheet = SpreadsheetApp.getActive();
spreadsheet.getRange('20:20').activate();
spreadsheet.getActiveSheet().insertRowsBefore(spreadsheet.getActiveRange().getRow(), 1);
spreadsheet.getActiveRange().offset(0, 0, 1, spreadsheet.getActiveRange().getNumColumns()).activate();
spreadsheet.getRange('21:21').copyTo(spreadsheet.getActiveRange(), SpreadsheetApp.CopyPasteType.PASTE_NORMAL, false);
spreadsheet.getRange('L20').activate();
spreadsheet.getActiveRangeList().clear({contentsOnly: true, skipFilteredRows: true});
spreadsheet.getRange('H20').activate();
spreadsheet.getActiveRangeList().clear({contentsOnly: true, skipFilteredRows: true});
};
As I will have insertions below each other, whenever I use the top ones will change the line to be copied to the others. I would like to remove dependency on expression ('20:20'), and a think that NamedRange is the way.
Is it possible to copy the values of a whole row or named range in one sheet and paste them in the same sheet, just creating a line above?

Answer 1

Using the Porperties Service [1] you can fix your problem, I edited the code linked to your example Spreadsheet as follows:
function PlusMP() {
var spreadsheet = SpreadsheetApp.getActive();
spreadsheet.getRange('5:5').activate();
spreadsheet.getActiveSheet().insertRowsBefore(spreadsheet.getActiveRange().getRow(), 1);
spreadsheet.getActiveRange().offset(0, 0, 1, spreadsheet.getActiveRange().getNumColumns()).activate();
spreadsheet.getRange('6:6').copyTo(spreadsheet.getActiveRange(), SpreadsheetApp.CopyPasteType.PASTE_NORMAL, false);
spreadsheet.getRange('L5').activate();
spreadsheet.getActiveRangeList().clear({contentsOnly: true, skipFilteredRows: true});
spreadsheet.getRange('H5').activate();
spreadsheet.getActiveRangeList().clear({contentsOnly: true, skipFilteredRows: true});
//Set offset property
var scriptProperties = PropertiesService.getScriptProperties();
var offset = Number(scriptProperties.getProperty('offset'));
if ( offset == null) {
scriptProperties.setProperty('offset', 1);
}
else {
scriptProperties.setProperty('offset', offset + 1);
}
};
function PlusCOMP() {
//Get offset property
var scriptProperties = PropertiesService.getScriptProperties();
var offset = Number(scriptProperties.getProperty('offset'));
if(offset == null) {
offset = 0;
}
var row = 10 + offset;
var spreadsheet = SpreadsheetApp.getActive();
spreadsheet.getRange(row + ':' + row).activate();
spreadsheet.getActiveSheet().insertRowsBefore(spreadsheet.getActiveRange().getRow(), 1);
spreadsheet.getActiveRange().offset(0, 0, 1, spreadsheet.getActiveRange().getNumColumns()).activate();
spreadsheet.getRange(row + ':' + row).copyTo(spreadsheet.getActiveRange(), SpreadsheetApp.CopyPasteType.PASTE_NORMAL, false);
spreadsheet.getRange('L' + row).activate();
spreadsheet.getActiveRangeList().clear({contentsOnly: true, skipFilteredRows: true});
spreadsheet.getRange('H' + row).activate();
spreadsheet.getActiveRangeList().clear({contentsOnly: true, skipFilteredRows: true});
};
function resetOffset() {
PropertiesService.getScriptProperties().setProperty('offset', 0);
}
When the PlusMP function is run it'll set or update the offset property, and when PlusCOMP function is run it'll use the same offset property to insert the rows accordingly.
[1] https://developers.google.com/apps-script/reference/properties/properties