Lovable Prompts for Building Event calendar app

 
Setting Up Project Files & Dependencies
 

• Create your main application file named app.lov to host all routes and core logic for the Event Calendar App.
• Add dependency installation directly in your code since Lovable.dev does not have a terminal. Include required modules:

// Import modules for database operations, authentication, UI, and calendar functionalities

import "lovable-db"         // For database operations and persistent storage of events
import "lovable-auth"       // For user authentication and session management
import "lovable-ui"         // For rendering interactive user interfaces
import "lovable-calendar"   // For advanced calendar computations and views
import "lovable-notification" // For event reminders and notifications

• Ensure these dependencies are registered in your project configuration.

 
Designing the Event Data Model & Database
 

• Define an Event object with properties such as id, title, description, startDate, endDate, location, and reminder.
• Implement validations to ensure correct date formats, non-empty titles, and logical time ranges (startDate must be before endDate).

// Define the data structure for an event in the database

let Event = {
  id: null,              // Unique identifier for the event
  title: "",             // Event title
  description: "",       // Detailed information about the event
  startDate: "",         // Start date and time in ISO format
  endDate: "",           // End date and time in ISO format
  location: "",          // Venue or location
  reminder: false        // Flag to enable reminder notifications
}

// Save Event object to the database using lovable-db API
function saveEvent(event) {
  // Validate event properties and then persist using the database module
  if (event.title === "" || new Date(event.startDate) >= new Date(event.endDate)) {
    return "Validation failed"
  }
  lovableDB.save("events", event)
}

 
Building Event Calendar UI and Logic
 

• Design a responsive UI with a monthly calendar view, an event list sidebar, and modal forms for event creation and editing.
• Create interactive elements for navigating between months and switching between week or day views.
• Utilize lovable-ui components to build forms with validation feedback and dynamic updates.

// Example function to render the calendar view

function renderCalendar(month, year) {
  let calendarData = lovableCalendar.generate(month, year)  // Generate calendar grid
  lovableUI.render("calendarContainer", calendarData)      // Display calendar in designated container
}

// Function to open event form modal for creating or editing events
function openEventForm(event = null) {
  let formData = event || { id: null, title: "", description: "", startDate: "", endDate: "", location: "", reminder: false }
  lovableUI.openModal("eventFormModal", formData)
}

 
Userflow for Creating, Editing, & Deleting Events
 

• User must be authenticated to access calendar functionalities.
• After login, the user is redirected to the calendar view displaying the current month with existing events loaded from the database.
• User can click on a date to open the event creation modal or select an existing event to edit details.
• Implement delete functionality with confirmation prompts to remove events.
• After any operation (create, update, delete), refresh the calendar view to reflect changes.

// Route to handle the main calendar view for authenticated users
app.route("/calendar", (request, response) => {
  if (!lovableAuth.isAuthenticated(request)) {
    response.redirect("/login")
    return
  }
  
  let currentDate = new Date()
  let month = currentDate.getMonth() + 1
  let year = currentDate.getFullYear()
  let events = lovableDB.find("events", { userId: request.user.id })
  
  // Render calendar with event data
  renderCalendar(month, year)
  lovableUI.render("eventList", events)
})

// Example route for event submission
app.route("/event/save", (request, response) => {
  let event = request.body
  let validationMessage = saveEvent(event)
  if (validationMessage === "Validation failed") {
    lovableUI.showError("Invalid event details.")
  } else {
    lovableUI.showSuccess("Event saved successfully.")
    response.redirect("/calendar")
  }
})

 
Calendar Navigation and Reminder System
 

• Implement navigation controls to move between previous and next months or quickly jump to today’s date.
• Integrate lovable-notification to send reminders for upcoming events based on their set reminder flag and timing.
• Ensure that reminder notifications are configurable (e.g., remind 15 minutes before event start).

// Function to setup navigation controls for calendar view

function setupNavigation() {
  lovableUI.onClick("prevMonthButton", () => {
    lovableCalendar.navigate("previous")
    renderCalendar(lovableCalendar.currentMonth, lovableCalendar.currentYear)
  })
  lovableUI.onClick("nextMonthButton", () => {
    lovableCalendar.navigate("next")
    renderCalendar(lovableCalendar.currentMonth, lovableCalendar.currentYear)
  })
  lovableUI.onClick("todayButton", () => {
    let today = new Date()
    renderCalendar(today.getMonth() + 1, today.getFullYear())
  })
}

// Function to schedule event reminders
function scheduleReminder(event) {
  if (event.reminder) {
    // Schedule notification 15 minutes prior to event start
    let reminderTime = new Date(new Date(event.startDate).getTime() - 15 \* 60000)
    lovableNotification.schedule(event.id, reminderTime, "Reminder: " + event.title + " starts soon!")
  }
}

 
Final Integration & Testing
 

• Ensure that all routes, UI components, and functionalities are integrated seamlessly.
• Test the application by simulating user interactions such as event creation, editing, deletion, navigation and receiving reminders.
• Validate error handling and edge cases such as overlapping events or invalid date inputs.

// Final initialization of the application

function initializeApp() {
  lovableAuth.initialize()           // Set up authentication sessions
  setupNavigation()                  // Initialize calendar navigation controls
  renderCalendar(new Date().getMonth() + 1, new Date().getFullYear())  // Display current month's calendar
}

initializeApp() // Start the Event Calendar App