Build a deadline proximity notifier

To build a deadline proximity notifier, we can write a simple application that keeps track of upcoming deadlines and alerts you when you’re getting close to one. This can be achieved through various technologies, but I’ll suggest a Python-based solution that works in a command-line environment. It can be extended to a web or mobile app later if you need it.

Here’s how we can build the notifier step by step:

1. Plan the Key Features

• Input Deadlines: User can input deadlines in a standard format.

• Set Reminders: Notify the user X days before the deadline.

• Recurring Notifications: If needed, remind the user periodically as the deadline approaches.

• Track Time Left: Show the remaining time until the deadline.

• Alert Notification: Notify the user through a console message or system pop-up.

2. Define the Data Structure

• You can store the deadlines in a dictionary or a simple list with datetime objects.

3. Write Code

Here’s a Python script to implement a simple deadline notifier:

deadline_notifier.py

python
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import time
from datetime import datetime, timedelta

class DeadlineNotifier:
    def __init__(self):
        self.deadlines = []
        
    def add_deadline(self, title, deadline_str):
        # Converts the deadline to a datetime object
        deadline = datetime.strptime(deadline_str, "%Y-%m-%d %H:%M")
        self.deadlines.append({"title": title, "deadline": deadline})
    
    def check_deadlines(self):
        # Get the current time
        now = datetime.now()
        
        for deadline in self.deadlines:
            time_left = deadline["deadline"] - now
            if time_left <= timedelta(days=0):
                print(f"Deadline for '{deadline['title']}' has passed!")
            elif time_left <= timedelta(days=1):
                print(f"Urgent! The deadline for '{deadline['title']}' is today!")
            elif time_left <= timedelta(days=3):
                print(f"Reminder: The deadline for '{deadline['title']}' is in less than 3 days.")
            else:
                print(f"'{deadline['title']}' has {time_left.days} days left.")
    
    def start_notifier(self):
        while True:
            self.check_deadlines()
            time.sleep(3600)  # Check every hour

# Example usage
if __name__ == "__main__":
    notifier = DeadlineNotifier()
    
    # Add some deadlines
    notifier.add_deadline("Project Report", "2025-05-20 17:00")
    notifier.add_deadline("Submit Assignment", "2025-05-22 23:59")
    
    # Start the notifier
    notifier.start_notifier()

4. Explanation of the Code:

• Deadline Data: Each deadline has a title and a datetime object representing the deadline.

• add_deadline: This method allows the user to input a deadline and stores it in the deadlines list.

• check_deadlines: This method checks if any deadlines are approaching or overdue, and prints reminders accordingly.

• start_notifier: Runs an infinite loop that checks the deadlines every hour.

5. How it Works:

• You input deadlines with a date and time.

• The notifier checks every hour to see if there are any deadlines approaching or overdue.

• You get notified based on the proximity to the deadline.

6. Enhancements:

• Email/SMS Notifications: You can use services like smtplib for email notifications or integrate with an API like Twilio for SMS alerts.

• Graphical UI: If you want a GUI, you can use tkinter or a web-based front end using Flask/Django.

• Recurring Reminders: Set up recurring reminders that notify you multiple times before the deadline (e.g., every day).

Let me know if you need any further customization!