nicegui_planner.py

# Import your dependencies
from dotenv import load_dotenv
import os
from nicegui import ui
from datetime import date
from datetime import datetime
from dataclasses import dataclass
from typing import List
from nylas import Client
from nylas.models.messages import ListMessagesQueryParams
import pendulum

# Load your env variables
load_dotenv()

# Initialize Nylas client
nylas = Client(
    api_key = os.environ.get("V3_API_KEY")
)

@dataclass # Class decorator
class EventItems:
    event_name: str

# To hold events
events: List[EventItems] = [

]

@dataclass # Class decorator
class EmailItems:
    email_name: str

# To hold emails
emails: List[EmailItems] = [

]

# Get list of events
def get_events(current_date) -> None:
    # Get today's date as Year, month, day
    today_date = datetime.strptime(current_date, '%Y-%m-%d').date() 
    # Today’s date at 12:00:00 am
    AFTER = int(datetime(today_date.year, today_date.month, 
                         today_date.day, 0, 0, 0).strftime('%s'))
    # Today’s date at 11:59:59 pm 
    BEFORE = int(datetime(today_date.year, today_date.month,
                            today_date.day, 23, 59, 59).strftime('%s'))
    query_params = {"calendar_id": os.environ.get("GRANT_ID"), 
                                "start":  AFTER, "end": BEFORE}
    events = nylas.events.list(os.environ.get("GRANT_ID"), 
                                             query_params=query_params).data
    # Auxiliary variables
    event_info = ""
    # Loop events
    if(len(events) > 0):
        for event in events:
            match event.when.object:
                case "timespan":
                    event_info = f"From:  {datetime.fromtimestamp(event.when.start_time).strftime('%H:%M:%S')} \
                                     To: {datetime.fromtimestamp(event.when.end_time).strftime('%H:%M:%S')} \
                                     | {event.title}"
                    add(event_info, "event")
                case "datespan":
                    event_info = f"From:  {datetime.fromtimestamp(event.when.start_date).strftime('%H:%M:%S')} \
                                     To: {datetime.fromtimestamp(event.when.end_date).strftime('%H:%M:%S')} \
                                     | {event.title}"
                    add(event_info, "event")
                case "date":
                    event_info = f"On:  {event.when.date} | {event.title}"
                    add(f"All day event | {event['title']}", "event")			
    else:
        add("No events today", "event")		

# Get list of emails
def get_emails(current_date) -> None:	
    # Get today's date as Year, month, day
    today_date = datetime.strptime(current_date, '%Y-%m-%d').date() 
    # Today’s date at 12:00:00 am
    AFTER = int(datetime(today_date.year, today_date.month, today_date.day, 0, 0, 0).strftime('%s'))
    # Today’s date at 11:59:59 pm 
    BEFORE = int(datetime(today_date.year, today_date.month,today_date.day, 23, 59, 59).strftime('%s'))	    
    # Create query parameters
    query_params = ListMessagesQueryParams(
        {'in' : "inbox", 'limit': 5, 'unread': True, 'received_after': AFTER, 'received_before': BEFORE}
    )
    # Get all emails in the specified range
    messages, _, _ = nylas.messages.list(os.environ.get("GRANT_ID"), query_params)
    # Auxiliary variables
    email_info = ""
    # Loop emails
    if(len(messages) > 0):
        for message in messages:
            # Grab the time, who's sending the email and the title of the email
            email_info = f"Time: {pendulum.instance(message.date).strftime('%H:%M:%S')} \
                                 | From: {message.from_[0].email} | Title: {message.subject}"
            add(email_info, "email")
    # No emails?
    else:
        add("No new emails today", "email")

# Function to add events and emails		
def add(name: str, type_ : str) -> None:
    # If it's an event, add it to the events list
    if type_ == "event":
        events.append(EventItems(name))
        render_events_list.refresh()
    # If it's an email, add it to the email list
    else:
        emails.append(EmailItems(name))
        render_emails_list.refresh()         

# Clear the list of events
def clear_events() -> None:
    events.clear()

# Clear the list of emails
def clear_emails() -> None:
    emails.clear()

# When we click on the calendar 
# to select a new date
def handle_input(e):
    # We pass the selected date
    current_date = e.value
    # If for some reason, there's no date
    # grab the current date
    if current_date is None:
        date.today()
        current_date = str(date.today())
    clear_events()
    # Get events for the selected date
    get_events(current_date)
    clear_emails()
    # Get emails for the selected date
    get_emails(current_date)

# Decorator to refresh the events list
@ui.refreshable
def render_events_list():
    # Title using Tailwind CSS
    ui.label('Events').tailwind.font_weight('black').font_size('4xl').text_color('blue-700')
    # Loop events
    for event in events:
        # Put events one after the other
        with ui.row().classes('items-center'):
            # Detail of event
            ui.label(event.event_name).tailwind.font_weight('semibold').font_size('lg')

# Decorator to refresh the emails list            
@ui.refreshable
def render_emails_list():
    # Title using Tailwind CSS
    ui.label('Emails').tailwind.font_weight('black').font_size('4xl').text_color('blue-700')
    # Loop emails
    for email in emails:
       # Put events one after the other
        with ui.row().classes('items-center'):
            # Detail of event
            ui.label(email.email_name).tailwind.font_weight('semibold').font_size('lg')

# Main layout with everything centered
with ui.column().classes('w-full items-center'):
    # Get today's date
    today = date.today()
    current_date = str(date.today())
    # Clear all events and emails	
    clear_events()
    clear_emails()
    # Set application title
    ui.label('Daily Planner').tailwind.font_weight('black').font_size('6xl').text_color('blue-700')
    # Create the calendar widget
    ui.date(value=today, on_change=handle_input)
    # Show all events
    get_events(current_date)
    render_events_list()
    # Show all emails
    get_emails(current_date)
    render_emails_list()

# Run our application
ui.run(title = 'NiceGUI Planner')