Google Apps Script

/**
 * [Project Name] - [Brief Description]
 *
 * [What it does, key features]
 *
 * INSTALL: Extensions > Apps Script > paste this > Save > Reload sheet
 */

// --- CONFIGURATION ---
const SOME_SETTING = 'value';

// --- MENU SETUP ---
function onOpen() {
  const ui = SpreadsheetApp.getUi();
  ui.createMenu('My Menu')
    .addItem('Do Something', 'myFunction')
    .addSeparator()
    .addSubMenu(ui.createMenu('More Options')
      .addItem('Option A', 'optionA'))
    .addToUi();
}

// --- FUNCTIONS ---
function myFunction() {
  // Implementation
}

// WRONG - dialog can't call this, fails silently
function doWork_() { return 'done'; }

// RIGHT - dialog can call this
function doWork() { return 'done'; }

// SLOW (70 seconds on 100x100) - reads one cell at a time
for (let i = 1; i <= 100; i++) {
  const val = sheet.getRange(i, 1).getValue();
}

// FAST (1 second) - reads all at once
const allData = sheet.getRange(1, 1, 100, 1).getValues();
for (const row of allData) {
  const val = row[0];
}

/**
 * Calculates something custom.
 * @param {string} input The input value
 * @return {string} The result
 * @customfunction
 */
function MY_FUNCTION(input) {
  // Can use: basic JS, Utilities, CacheService
  // CANNOT use: MailApp, UrlFetchApp, SpreadsheetApp.getUi(), triggers
  return input.toUpperCase();
}

function showProgress(message, serverFn) {
  const html = HtmlService.createHtmlOutput(`
    <style>
      body { font-family: 'Google Sans', Arial, sans-serif; display: flex;
        flex-direction: column; align-items: center; justify-content: center;
        height: 100%; margin: 0; padding: 20px; box-sizing: border-box; }
      .spinner { width: 36px; height: 36px; border: 4px solid #e0e0e0;
        border-top: 4px solid #1a73e8; border-radius: 50%;
        animation: spin 0.8s linear infinite; margin-bottom: 16px; }
      @keyframes spin { to { transform: rotate(360deg); } }
      .message { font-size: 14px; color: #333; text-align: center; }
      .done { color: #1e8e3e; font-weight: 500; }
      .error { color: #d93025; font-weight: 500; }
    </style>
    <div class="spinner" id="spinner"></div>
    <div class="message" id="msg">${message}</div>
    <script>
      google.script.run
        .withSuccessHandler(function(r) {
          document.getElementById('spinner').style.display = 'none';
          var m = document.getElementById('msg');
          m.className = 'message done';
          m.innerText = 'Done! ' + (r || '');
          setTimeout(function() { google.script.host.close(); }, 1200);
        })
        .withFailureHandler(function(err) {
          document.getElementById('spinner').style.display = 'none';
          var m = document.getElementById('msg');
          m.className = 'message error';
          m.innerText = 'Error: ' + err.message;
          setTimeout(function() { google.script.host.close(); }, 3000);
        })
        .${serverFn}();
    </script>
  `).setWidth(320).setHeight(140);
  SpreadsheetApp.getUi().showModalDialog(html, 'Working...');
}

// Menu calls this wrapper
function menuDoWork() {
  showProgress('Processing data...', 'doTheWork');
}

// MUST be public (no underscore) for the dialog to call it
function doTheWork() {
  // ... do the work ...
  SpreadsheetApp.flush();
  return 'Processed 50 rows';  // shown in success message
}

SpreadsheetApp.getActiveSpreadsheet().toast('Operation complete!', 'Title', 5);
// Arguments: message, title, duration in seconds (-1 = until dismissed)

const ui = SpreadsheetApp.getUi();

// Yes/No confirmation
const response = ui.alert('Delete this data?', 'This cannot be undone.',
  ui.ButtonSet.YES_NO);
if (response === ui.Button.YES) { /* proceed */ }

// Prompt for input
const result = ui.prompt('Enter your name:', ui.ButtonSet.OK_CANCEL);
if (result.getSelectedButton() === ui.Button.OK) {
  const name = result.getResponseText();
}

function showSidebar() {
  const html = HtmlService.createHtmlOutput(`
    <h3>Quick Entry</h3>
    <select id="worker"><option>Craig</option><option>Steve</option></select>
    <input id="suburb" placeholder="Suburb">
    <button onclick="submit()">Add Job</button>
    <script>
      function submit() {
        google.script.run.withSuccessHandler(function() { alert('Added!'); })
          .addJob(document.getElementById('worker').value,
                  document.getElementById('suburb').value);
      }
    </script>
  `).setTitle('Job Entry').setWidth(300);
  SpreadsheetApp.getUi().showSidebar(html);
}

function addJob(worker, suburb) { // MUST be public (no underscore)
  SpreadsheetApp.getActiveSpreadsheet().getActiveSheet().appendRow([new Date(), worker, suburb]);
}

function onEdit(e) {
  const sheet = e.source.getActiveSheet();
  if (sheet.getName() !== 'Data') return;
  if (e.range.getColumn() !== 3) return;
  // Auto-timestamp when column C is edited
  sheet.getRange(e.range.getRow(), 4).setValue(new Date());
}

function createTriggers() {
  // Time-driven: run every day at 8am
  ScriptApp.newTrigger('dailyReport')
    .timeBased().atHour(8).everyDays(1).create();

  // On edit with full permissions (can send email, fetch URLs)
  ScriptApp.newTrigger('onEditFull')
    .forSpreadsheet(SpreadsheetApp.getActive()).onEdit().create();

  // On form submit
  ScriptApp.newTrigger('onFormSubmit')
    .forSpreadsheet(SpreadsheetApp.getActive()).onFormSubmit().create();
}

function emailWeeklySchedule() {
  const sheet = SpreadsheetApp.getActiveSpreadsheet().getActiveSheet();
  const data = sheet.getRange('A2:E10').getDisplayValues();
  let body = '<h2>Weekly Schedule</h2><table border="1" cellpadding="8">';
  body += '<tr><th>Job</th><th>Suburb</th><th>Time</th><th>Price</th></tr>';
  for (const row of data) {
    if (row[0]) body += '<tr>' + row.map(c => '<td>' + c + '</td>').join('') + '</tr>';
  }
  body += '</table>';
  MailApp.sendEmail({ to: 'worker@example.com',
    subject: 'Schedule - Week ' + sheet.getName(), htmlBody: body });
}

function exportSheetAsPdf() {
  const ss = SpreadsheetApp.getActiveSpreadsheet();
  const url = ss.getUrl().replace(/\/edit.*$/, '')
    + '/export?exportFormat=pdf&format=pdf&size=A4&portrait=true'
    + '&fitw=true&sheetnames=false&printtitle=false&gridlines=false'
    + '&gid=' + ss.getActiveSheet().getSheetId();
  const blob = UrlFetchApp.fetch(url, {
    headers: { 'Authorization': 'Bearer ' + ScriptApp.getOAuthToken() }
  }).getBlob().setName('report.pdf');
  MailApp.sendEmail({ to: 'boss@example.com', subject: 'Weekly Report PDF',
    body: 'Attached.', attachments: [blob] });
}

// GET
function fetchData() {
  const r = UrlFetchApp.fetch('https://api.example.com/data', {
    headers: { 'Authorization': 'Bearer ' + getApiKey() } });
  return JSON.parse(r.getContentText());
}

// POST (muteHttpExceptions to handle errors yourself)
function postData(payload) {
  const r = UrlFetchApp.fetch('https://api.example.com/submit', {
    method: 'post', contentType: 'application/json',
    payload: JSON.stringify(payload), muteHttpExceptions: true });
  if (r.getResponseCode() !== 200) throw new Error('API error: ' + r.getContentText());
  return JSON.parse(r.getContentText());
}

// Dropdown from list
const rule = SpreadsheetApp.newDataValidation()
  .requireValueInList(['Option A', 'Option B', 'Option C'], true)
  .setAllowInvalid(false).setHelpText('Select an option').build();
sheet.getRange('C3:C50').setDataValidation(rule);

// Dropdown from range (e.g. a Lookups sheet)
const rule2 = SpreadsheetApp.newDataValidation()
  .requireValueInRange(ss.getSheetByName('Lookups').getRange('A1:A100')).build();
sheet.getRange('B3:B50').setDataValidation(rule2);