Implement calendar display application
Built a full-featured smart display app with Flask backend and responsive frontend. Features: - Real-time clock display - Weather integration (OpenWeatherMap API) for Hamilton, NZ - Google Calendar integration (placeholder, needs credentials) - Rotating background images from local directory - Dad jokes display (icanhazdadjoke API) Technical stack: - Backend: Python Flask with API endpoints - Frontend: HTML/CSS/JavaScript with auto-updating data - Caching system to avoid API rate limits - Responsive design for various screen sizes Deployment ready for Raspberry Pi with systemd service and Chromium kiosk mode setup instructions. Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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189
static/js/app.js
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189
static/js/app.js
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// Update intervals (in milliseconds)
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const INTERVALS = {
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TIME: 1000, // 1 second
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WEATHER: 900000, // 15 minutes
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CALENDAR: 300000, // 5 minutes
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BACKGROUND: 300000, // 5 minutes
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JOKE: 3600000 // 1 hour
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};
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// Weather icon mapping (OpenWeatherMap icons to emoji or text)
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const WEATHER_ICONS = {
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'01d': '☀️', '01n': '🌙',
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'02d': '⛅', '02n': '☁️',
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'03d': '☁️', '03n': '☁️',
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'04d': '☁️', '04n': '☁️',
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'09d': '🌧️', '09n': '🌧️',
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'10d': '🌦️', '10n': '🌧️',
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'11d': '⛈️', '11n': '⛈️',
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'13d': '❄️', '13n': '❄️',
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'50d': '🌫️', '50n': '🌫️'
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};
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// Initialize the application
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document.addEventListener('DOMContentLoaded', () => {
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// Start all update functions
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updateTime();
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updateWeather();
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updateCalendar();
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updateBackground();
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updateJoke();
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// Set up intervals
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setInterval(updateTime, INTERVALS.TIME);
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setInterval(updateWeather, INTERVALS.WEATHER);
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setInterval(updateCalendar, INTERVALS.CALENDAR);
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setInterval(updateBackground, INTERVALS.BACKGROUND);
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setInterval(updateJoke, INTERVALS.JOKE);
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});
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// Update time and date
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function updateTime() {
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const now = new Date();
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// Format time (HH:MM)
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const hours = String(now.getHours()).padStart(2, '0');
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const minutes = String(now.getMinutes()).padStart(2, '0');
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document.getElementById('time').textContent = `${hours}:${minutes}`;
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// Format date (Day, Month Date)
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const options = { weekday: 'long', month: 'long', day: 'numeric' };
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const dateString = now.toLocaleDateString('en-NZ', options);
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document.getElementById('date').textContent = dateString;
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}
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// Fetch and update weather
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async function updateWeather() {
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try {
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const response = await fetch('/api/weather');
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if (!response.ok) throw new Error('Weather fetch failed');
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const data = await response.json();
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if (data.error) {
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console.error('Weather error:', data.error);
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return;
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}
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// Update current weather
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const { current, forecast } = data;
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document.getElementById('current-temp').textContent = `${current.temp}°`;
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document.getElementById('weather-icon').textContent = WEATHER_ICONS[current.icon] || '🌤️';
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document.getElementById('weather-description').textContent = current.description;
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document.getElementById('feels-like').textContent = `${current.feels_like}°`;
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document.getElementById('humidity').textContent = `${current.humidity}%`;
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document.getElementById('wind-speed').textContent = `${current.wind_speed} km/h`;
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// Update forecast
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const forecastContainer = document.getElementById('forecast-container');
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forecastContainer.innerHTML = '';
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forecast.forEach(day => {
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const dayElement = document.createElement('div');
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dayElement.className = 'forecast-day';
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dayElement.innerHTML = `
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<div class="forecast-day-name">${day.date}</div>
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<div class="forecast-description">${day.description}</div>
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<div class="forecast-temp">
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<span class="high">${day.temp_max}°</span>
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<span class="low">${day.temp_min}°</span>
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</div>
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`;
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forecastContainer.appendChild(dayElement);
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});
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} catch (error) {
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console.error('Error updating weather:', error);
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}
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}
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// Fetch and update calendar events
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async function updateCalendar() {
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try {
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const response = await fetch('/api/calendar');
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if (!response.ok) throw new Error('Calendar fetch failed');
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const events = await response.json();
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if (events.error) {
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console.error('Calendar error:', events.error);
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return;
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}
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const eventsContainer = document.getElementById('calendar-events');
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if (!events || events.length === 0) {
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eventsContainer.innerHTML = '<div class="event-placeholder">No upcoming events</div>';
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return;
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}
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eventsContainer.innerHTML = '';
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events.forEach(event => {
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const eventElement = document.createElement('div');
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eventElement.className = 'event';
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const startTime = new Date(event.start);
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const endTime = new Date(event.end);
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// Format time
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const timeOptions = { hour: '2-digit', minute: '2-digit', weekday: 'short', day: 'numeric', month: 'short' };
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const timeString = startTime.toLocaleDateString('en-NZ', timeOptions);
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eventElement.innerHTML = `
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<div class="event-time">${timeString}</div>
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<div class="event-title">${event.title}</div>
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${event.location ? `<div class="event-location">📍 ${event.location}</div>` : ''}
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`;
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eventsContainer.appendChild(eventElement);
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});
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} catch (error) {
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console.error('Error updating calendar:', error);
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}
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}
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// Update background image
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async function updateBackground() {
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try {
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const response = await fetch('/api/background');
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if (!response.ok) throw new Error('Background fetch failed');
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const data = await response.json();
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const backgroundElement = document.getElementById('background');
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if (data.image) {
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// Preload image to avoid flicker
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const img = new Image();
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img.onload = () => {
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backgroundElement.style.backgroundImage = `url('${data.image}')`;
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};
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img.src = data.image;
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} else if (data.color) {
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backgroundElement.style.backgroundColor = data.color;
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backgroundElement.style.backgroundImage = 'none';
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}
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} catch (error) {
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console.error('Error updating background:', error);
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}
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}
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// Fetch and update dad joke
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async function updateJoke() {
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try {
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const response = await fetch('/api/joke');
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if (!response.ok) throw new Error('Joke fetch failed');
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const data = await response.json();
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if (data.joke) {
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document.getElementById('joke').textContent = data.joke;
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}
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} catch (error) {
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console.error('Error updating joke:', error);
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}
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}
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