n8n Workflow: Basic Workflow Structure with Conditional Logic and Telegram Notifications

This n8n workflow demonstrates a fundamental automation pattern: triggering a process, applying conditional logic, and sending notifications. It serves as a template for building more complex automations that require branching based on data and communicating outcomes.

What it does

This workflow outlines a process that can be triggered manually or on a schedule, then uses conditional logic to determine subsequent actions, potentially sending a notification via Telegram.

1. Trigger: The workflow can be initiated either manually by clicking "Execute workflow" or automatically at scheduled intervals.
2. Conditional Logic (Switch): It uses a Switch node to evaluate an input and route the workflow down different paths based on the value.
3. Code Execution: One of the paths from the Switch node leads to a Code node, allowing for custom JavaScript logic or data manipulation.
4. Conditional Logic (If): Another If node further refines the conditional logic, routing the flow based on a boolean evaluation.
5. Telegram Notification: If a specific condition is met, a message is sent to a Telegram chat.
6. Sticky Notes: The workflow includes sticky notes for documentation and explanation of different sections.

Prerequisites/Requirements

• n8n Instance: A running n8n instance (cloud or self-hosted).
• Telegram Bot: A Telegram bot token and a chat ID if you intend to send notifications. You'll need to create a bot via BotFather on Telegram and obtain its API token.
• Basic JavaScript Knowledge: If you plan to modify or utilize the Code node effectively.

Setup/Usage

1. Import the Workflow:
   • Copy the provided JSON code.
   • In your n8n instance, go to "Workflows" and click "New".
   • Click the three dots in the top right corner and select "Import from JSON".
   • Paste the JSON code and click "Import".
2. Configure Credentials:
   • Telegram: If you want to enable Telegram notifications, you will need to set up a Telegram credential.
     • Click on the "Telegram" node.
     • Under "Credentials", click "Create New".
     • Select "Telegram API" and enter your Bot Token.
     • Enter the Chat ID where you want to send messages.
3. Configure Triggers:
   • Manual Trigger: The "When clicking ‘Execute workflow’" node is ready to use.
   • Schedule Trigger: To activate the scheduled trigger, click on the "Schedule Trigger" node and configure its settings (e.g., interval, specific time).
4. Configure Conditional Logic:
   • Switch Node: Click on the "Switch" node and define the expression and cases for routing.
   • If Node: Click on the "If" node and define the condition(s) for the true/false branches.
5. Customize Code Node:
   • Click on the "Code" node to add your custom JavaScript logic.
6. Activate the Workflow:
   • Once configured, toggle the workflow to "Active" in the top right corner of the workflow editor.

This workflow provides a solid foundation for automating tasks that involve decision-making and external communication. Expand upon it by integrating with other services, fetching real-time data, and building more sophisticated logic.