Issues with textfinder and IF - if-statement

Question

I have a piece of code that was scrounged together from another code that is known working. What it does is searches a column using textfinder for a value, in this case, yesterday's date, if nothing is found, it should send an email.
function findAndSendMail() {
var ss = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('FormResponses');
var ss2 = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('AlertDate');
var search = ss2.getRange("B2").getValue(); //cell has yesterday's date
var lastRow = ss.getLastRow();
var range = ss.getRange(1,4,lastRow); //define range for column D, column D contains dates
//find all occurrences of search key in column D and push range to array
var ranges = range.createTextFinder(search).findAll();
if (ranges!==null) {
var message = '';
}else {
var message = 'Test';
}
var emailRange = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("EmailGroup").getRange("A1");
var emailAddress = emailRange.getValues();
var subject = 'Subject';
var link = "blahblahblah"
if (message) {
MailApp.sendEmail(emailAddress, subject, '**This is an automated message**\n\n' + message + '\n\n**This is an automated message**\n' + link);
}
}
As you see, it should search column D, then, if it finds something, the message variable will be blank, else if it finds nothing, it will send an email to the email addresses chosen. I'm not sure how the results from a textfinder work with this and I think the way it is written is incorrect. Any help is appreciated, unfortunately, I cannot share the document in question as my company doesn't allow sharing outside of the domain. Thank you!

Answer 1

Try this:
You will need to update the sheet names I moved them to end of the line comments
function findAndSendMail() {
var ss=SpreadsheetApp.getActive()
var sh1=ss.getSheetByName('Sheet1');//FormResponses
var sh2=ss.getSheetByName('Sheet2');//AlertDate
var d1=new Date(sh2.getRange("B2").getValue()); //cell has yesterday's date
var d2=new Date(d1.getFullYear(),d1.getMonth(),d1.getDate()).valueOf();
var rg1 = sh1.getRange(1,4,sh1.getLastRow(),1);
var vA=rg1.getValues().map(function(r){
var dt=new Date(r[0]);
var dtv=new Date(dt.getFullYear(),dt.getMonth(),dt.getDate()).valueOf();
return dtv;
});
if(vA.indexOf(d2)==-1) {
var message='test';
var emailAddress = ss.getSheetByName("Sheet3").getRange("A1").getValue();//EmailGroup
var subject = 'Subject';
var link = "blahblahblah"
}
if (message) {
MailApp.sendEmail(emailAddress, subject, '**This is an automated message**\n\n' + message + '\n\n**This is an automated message**\n' + link);
//SpreadsheetApp.getUi().alert('I found something');//just for testing
}
}
This version sends an email if yesterday is not found.
In answer to you last question:
function findAndSendMail() {
var ss=SpreadsheetApp.getActive()
var sh1=ss.getSheetByName('Sheet1');//FormResponses
var sh2=ss.getSheetByName('Sheet2');//AlertDate
var d1=new Date(sh2.getRange("B2").getValue()); //cell has yesterday's date
if(isDate(d1)) {
var d2=new Date(d1.getFullYear(),d1.getMonth(),d1.getDate()).valueOf();
var rg1 = sh1.getRange(1,4,sh1.getLastRow(),1);
var vA=rg1.getValues().map(function(r){
var dt=new Date(r[0]);
var dtv=new Date(dt.getFullYear(),dt.getMonth(),dt.getDate()).valueOf();
return dtv;
});
if(vA.indexOf(d2)==-1) {
var message='test';
var emailAddress = ss.getSheetByName("Sheet3").getRange("A1").getValue();//EmailGroup
var subject = 'Subject';
var link = "blahblahblah"
}
if (message) {
MailApp.sendEmail(emailAddress, subject, '**This is an automated message**\n\n' + message + '\n\n**This is an automated message**\n' + link);
//SpreadsheetApp.getUi().alert('I found something');//just for testing
}
}else{
SpreadsheetApp.getUi().alert('Data is sheet2!B2 is not a date')
return;
}
}
function isDate(date){
return(Object.prototype.toString.call(date) === '[object Date]');
}