Time trigger to cut & paste row when cell equals N/A - google-apps-script

Question

I have a spreadsheet with the following 2 sheets:
Sheet1 "Induction Checklist" is a list of current staff (around 400) from A3:M - Row 2 is the header row.
Sheet2 "Induction Checklist - Staff Left" is a duplicate of Sheet1 but a list of previous staff from A3:M - Row 2 has the same headers as Sheet1
Column C is the Staff ID (number) in both sheets.
Column C of Sheet1 has an ImportRange/Vlookup formula to an entirely different spreadsheet (Source Sheet) to find the Staff ID. When the employee is removed from the Source Sheet, the formula can't find the employee so the value in column C of Sheet1 changes to "N/A".
I want to create a time-based trigger to find the "N/A" values in column C of Sheet1, then cut and paste only those rows to Sheet2 and delete the same rows from Sheet1. If "N/A" is not found, do nothing.
This is a sample of my spreadsheet:
Sample Spreadsheet
I have the following script but can't get it to work. I would really appreciate some help.
function removeOldStaff() {
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheet = ss.getSheetByName("Induction Checklist");
var range = sheet.getRange(1, 1, sheet.getLastRow(), sheet.getLastColumn());
var column = 3
var errorColumn = range.getColumn();
var errorRow = range.getRow();
var error = range.getValue();
var value = "N/A"
if(error == value && errorColumn == column && errorRow > 3 && sheet.getName() == sheetName) {
var numCols = sheet.getLastColumn();
var row = sheet.getRange(errorRow, 1, 1, numCols).getValues();
var destinationSheet = ss.getSheetByName("Induction Checklist - Staff Left");
// Get first empty row:
var emptyRow = destinationSheet.getLastRow() + 1;
// Copy values from 'Induction Checklist'
destinationSheet.getRange(emptyRow, 1, 1, numCols).setValues(row);
sheet.deleteRow(errorRow);
}
}

Answer 1

Issue:
You are not iterating through the different rows in your range. For example, range.getValue() will only return the value of the top-left cell in the range, in your case A1. That's hardly what you want to look for. Similarly, functions like getColumn() or getRow() don't make sense in this context.
Solution:
Use getValues() to get all the values in your range in a 2D array, and iterate through that (for example, with for).
For each row, check the value in column C.
If the value is #N/A, push the full row of data to and array with all the rows to copy (dataToCopy in the sample below), and delete the row from the source sheet (you should loop in reverse order because otherwise deleting the rows would mess with the row indexes).
Copy dataToCopy to the target sheet via setValues
Code sample:
function removeOldStaff() {
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheet = ss.getSheetByName("Induction Checklist");
var destinationSheet = ss.getSheetByName("Induction Checklist - Staff Left");
var firstRow = 3;
var column = 3;
var value = "#N/A";
var values = sheet.getRange(firstRow, 1, sheet.getLastRow() - firstRow + 1, sheet.getLastColumn()).getValues();
var dataToCopy = [];
for (var i = values.length - 1; i >= 0; i--) {
var row = values[i];
var errorValue = row[column - 1];
if (errorValue == value) {
dataToCopy.push(row);
sheet.deleteRow(firstRow + i);
}
}
// Get first empty row:
var emptyRow = destinationSheet.getLastRow() + 1;
// Copy values from 'Induction Checklist'
destinationSheet.getRange(emptyRow, 1, dataToCopy.length, dataToCopy[0].length).setValues(dataToCopy);
}