Task Scheduler Bot

Overview

Task Scheduler Bot is a Telegram bot that lets users manage tasks and reminders using natural language commands.

Why Telegram?

• Always accessible: People already have Telegram on their phones
• No new app to install: Lower barrier to adoption
• Rich interaction: Buttons, inline keyboards, notifications
• Cross-platform: Works on mobile, desktop, and web

Natural Language Understanding

Users can type commands naturally:

"Remind me to call John tomorrow at 3pm"
"Add buying groceries to my list"
"What tasks do I have this week?"
"Mark the report as done"

The bot parses these into structured actions using NLP:

# Example parsing
input: "Remind me to call John tomorrow at 3pm"
output: {
  "action": "create_reminder",
  "task": "call John",
  "datetime": "2024-01-16T15:00:00",
  "recurring": false
}

Features

Task Management

• Create, update, delete tasks
• Set due dates and priorities
• Categorize with tags
• Search and filter

Reminders

• One-time reminders
• Recurring reminders (daily, weekly, monthly)
• Location-based reminders (coming soon)

Habit Tracking

• Define habits to track
• Daily check-ins
• Streak counting
• Weekly reports

Technical Implementation

Serverless Architecture

The bot runs on AWS Lambda for:

• Cost efficiency: Pay only for actual usage
• Scalability: Handles traffic spikes automatically
• Low maintenance: No server management

Database Design

MongoDB stores user data with this structure:

{
  userId: "telegram_123456",
  tasks: [...],
  reminders: [...],
  habits: [...],
  preferences: {
    timezone: "Asia/Kolkata",
    reminderTime: "09:00"
  }
}

Usage Statistics

After 3 months of operation:

• 500+ active users
• 10,000+ tasks created
• 95% reminder delivery rate

Lessons Learned

• Natural language parsing doesnt need to be perfect - handle edge cases gracefully
• User onboarding is crucial - provide examples of valid commands
• Timezone handling is tricky but essential for reminders