/**
 * Google app-script to utilise Elementor Pro Froms webhook
 * For Usage see: https://github.com/pojome/elementor/issues/5894
 */

/*
In order to enable this script, follow these steps:
 * From your Google Sheet, from the Tools menu select Script Editor…
 * Paste the script from this gist into the script code editor and hit Save.
 * From the Publish menu, select Deploy as web app…
 * Choose to execute the app as yourself, and allow Anyone, even anonymous to execute the script. (Note, depending on your Google Apps instance, this option may not be available. You will need to contact your Google Apps administrator, or else use a Gmail account.) Now click Deploy. You may be asked to review permissions now.
 * The URL that you get will be the webhook that you can use in your elementor form, You can test this webhook in your browser first by pasting it. It will say "Yepp this is the webhook URL, request received".
 */

// Change to true to enable email notifications
var emailNotification = false;
var emailAddress = "Change_to_your_Email";



// DO NOT EDIT THESE NEXT PARAMS
var isNewSheet = false;
var recivedData = [];

/**
 * this is a function that fires when the webapp receives a GET request
 * Not used but required.
 */
function doGet( e ) {
	return HtmlService.createHtmlOutput( "Yepp this is the webhook URL, request received" );
}

// Webhook Receiver - triggered with form webhook to pusblished App URL.
function doPost( e ) {
	var params = JSON.stringify(e.parameter);
	params = JSON.parse(params);
	insertToSheet(params);

	// HTTP Response
	return HtmlService.createHtmlOutput( "post request received" );
}

// Flattens a nested object for easier use with a spreadsheet
function flattenObject( ob ) {
	var toReturn = {};
	for ( var i in ob ) {
		if ( ! ob.hasOwnProperty( i ) ) continue;
		if ( ( typeof ob[ i ] ) == 'object' ) {
			var flatObject = flattenObject( ob[ i ] );
			for ( var x in flatObject ) {
				if ( ! flatObject.hasOwnProperty( x ) ) continue;
				toReturn[ i + '.' + x ] = flatObject[ x ];
			}
		} else {
			toReturn[ i ] = ob[ i ];
		}
	}
	return toReturn;
}

// normalize headers
function getHeaders( formSheet, keys ) {
	var headers = [];
  
	// retrieve existing headers
    if ( ! isNewSheet ) {
	  headers = formSheet.getRange( 1, 1, 1, formSheet.getLastColumn() ).getValues()[0];
    }

	// add any additional headers
	var newHeaders = [];
	newHeaders = keys.filter( function( k ) {
		return headers.indexOf( k ) > -1 ? false : k;
	} );

	newHeaders.forEach( function( h ) {
		headers.push( h );
	} );
	return headers;
}

// normalize values
function getValues( headers, flat ) {
	var values = [];
	// push values based on headers
	headers.forEach( function( h ){
		values.push( flat[ h ] );
	});
	return values;
}

// Insert headers
function setHeaders( sheet, values ) {
	var headerRow = sheet.getRange( 1, 1, 1, values.length )
	headerRow.setValues( [ values ] );
	headerRow.setFontWeight( "bold" ).setHorizontalAlignment( "center" );
}

// Insert Data into Sheet
function setValues( sheet, values ) {
	var lastRow = Math.max( sheet.getLastRow(),1 );
	sheet.insertRowAfter( lastRow );
	sheet.getRange( lastRow + 1, 1, 1, values.length ).setValues( [ values ] ).setFontWeight( "normal" ).setHorizontalAlignment( "center" );
}

// Find or create sheet for form
function getFormSheet( formName ) {
	var formSheet;
	var activeSheet = SpreadsheetApp.getActiveSpreadsheet();

	// create sheet if needed
	if ( activeSheet.getSheetByName( formName ) == null ) {
      formSheet = activeSheet.insertSheet();
      formSheet.setName( formName );
      isNewSheet = true;
	}
	return activeSheet.getSheetByName( formName );
}


// magic function where it all happens
function insertToSheet( data ){
	var flat = flattenObject( data );
	var keys = Object.keys( flat );
	var formName = data["form_name"];
	var formSheet = getFormSheet( formName );
	var headers = getHeaders( formSheet, keys );
	var values = getValues( headers, flat );
	setHeaders( formSheet, headers );
	setValues( formSheet, values );
	
    if ( emailNotification ) {
		sendNotification( data, getSeetURL() );
	}
}

function getSeetURL() {
  var spreadsheet = SpreadsheetApp.getActiveSpreadsheet();
  var sheet = spreadsheet.getActiveSheet();
  return spreadsheet.getUrl();
}

function sendNotification( data, url ) {
	var subject = "A new Elementor Pro Froms subbmition has been inserted to your sheet";
  var message = "A new subbmition has been recived via " + data['form_name'] + " form and inserted into your Google sheet at: " + url;
	MailApp.sendEmail( emailAddress, subject, message, {
		name: 'Automatic Emailer Script'
	} );
}