// Created by Robin Wilson 08-28-2018

var spreadsheetID = "1kLH8MbcOh50OlNIRs6GdEqvsgb3RIZMQda3gOhKprCw";

var worksheetName = "Auto_Checkin";

var spreadsheet = SpreadsheetApp.openById(spreadsheetID);
var sheet = spreadsheet.getSheetByName(worksheetName);

var data = sheet.getDataRange().getValues();

var col_Usernames = sheet.getRange("Usernames").getColumn();
var col_CheckedIn = sheet.getRange("Checkin").getColumn();

var success = ContentService.createTextOutput("Success");
var failureUsername = ContentService.createTextOutput("Not found username");
var failureError = ContentService.createTextOutput(JSON.stringify({ response: "There was a problem please let Hifi know" }));

// onDomainEnter
// Calls this method
function doGet(e) {

    Logger.log(JSON.stringify(e));

    var username = e.parameter.username,
        date = e.parameter.date;

    if (username) {
        // search for username
        var usernameRow = getUsernameRow(username);

        if (usernameRow === -1) {
            // no username found return false
            return failureUsername;
        } else {
            // username found mark as present and return true
            markPresent(usernameRow);
            return success;
        }

    } else {

        return failureError;

    }
}

// ------ Helper functions ------ //

function markPresent(rowIdx) {

    var cell = sheet.getRange(rowIdx + 1, col_CheckedIn); // index to column
    cell.setValue([1]);

}

// return the row with the found username
function getUsernameRow(username) {

    var searchUsername = username.toString().toLowerCase();
    return search(searchUsername, col_Usernames);

}

// Search for searchTerm inside the searchCol
function search(searchTerm, searchCol) {

    for (var row = 0; row < data.length; row++) {
        var rowData = data[row];
        var cur = rowData[searchCol - 1]; // convert column to index

        if (cur) cur = cur.toLowerCase();
        if (cur === searchTerm) return row;
    }
    return -1;
}