n8n Workflow: Automate Discount Code Distribution via WhatsApp

This n8n workflow simplifies and automates the process of distributing discount codes to customers. It acts as an API endpoint, receiving customer data and then simulating the distribution of discount codes, potentially via a service like Rapiwa for WhatsApp.

What it does

This workflow performs the following key steps:

1. Receives a Webhook Trigger: The workflow starts by listening for an incoming HTTP POST request (webhook). This request is expected to contain customer data, likely including details needed for discount code distribution.
2. Processes Data (Placeholder): A "Code" node is included, which typically allows for custom JavaScript logic. In its current state (based solely on the JSON), it acts as a placeholder for processing or transforming the incoming data.
3. Loops Over Items (Placeholder): A "Loop Over Items (Split in Batches)" node is present, suggesting that the workflow is designed to handle multiple items (e.g., multiple customers) received in a single webhook. This node would iterate through each item.
4. Conditional Logic (Placeholder): An "If" node is included, indicating that there might be conditional logic to determine whether a discount code should be sent or how it should be handled based on certain criteria.
5. Simulates Discount Code Generation/Lookup (Placeholder): A "Google Sheets" node is present. While its exact operation is not defined in the JSON, it commonly interacts with Google Sheets to read, write, or update data. This could be used to look up existing discount codes, record sent codes, or even generate new ones.
6. Simulates WhatsApp Message Sending (Placeholder): An "HTTP Request" node is included. This node is typically used to make API calls to external services. In the context of the directory name "rapiwa", this node would likely be configured to send WhatsApp messages via the Rapiwa API, including the discount code.
7. Introduces a Delay (Placeholder): A "Wait" node is present, which pauses the workflow for a specified duration. This can be useful for rate limiting when interacting with external APIs or to simulate a more natural distribution pace.
8. Provides a Sticky Note: A "Sticky Note" is included, which is used for documentation within the workflow itself, likely to provide context or instructions for specific parts of the flow.

Prerequisites/Requirements

To fully utilize this workflow, you would typically need:

• n8n Instance: A running instance of n8n to import and execute the workflow.
• Webhook Source: An external system (e.g., Shopify, CRM, custom application) configured to send data to the n8n Webhook URL.
• Google Account: For the "Google Sheets" node, a Google account with access to the relevant spreadsheet.
• Rapiwa Account (or similar WhatsApp API): For sending WhatsApp messages, an account with Rapiwa or another WhatsApp Business API provider, along with the necessary API credentials.
• API Key/Credentials: Any required API keys or authentication tokens for Rapiwa and other external services.

Setup/Usage

1. Import the Workflow: Download the provided JSON and import it into your n8n instance.
2. Configure the Webhook:
   • Activate the "Webhook" node.
   • Copy the generated webhook URL. This URL will be used by your external system to trigger the workflow.
3. Configure Credentials:
   • Google Sheets: Set up your Google Sheets credentials in n8n. Configure the "Google Sheets" node to interact with your desired spreadsheet (e.g., to read customer data, store discount codes, or log activity).
   • HTTP Request (Rapiwa): Configure the "HTTP Request" node with your Rapiwa API endpoint, authentication details (e.g., API key in headers or body), and the message payload for sending WhatsApp messages. You'll need to dynamically insert customer phone numbers and discount codes into the request body.
4. Customize Code and If Nodes:
   • Code: Modify the "Code" node to perform any necessary data transformation, validation, or discount code generation logic.
   • If: Adjust the conditions in the "If" node to control when and how discount codes are distributed (e.g., only for new customers, specific order values, etc.).
5. Adjust Loop and Wait Nodes:
   • Loop Over Items: Configure the batch size if you expect to process many items simultaneously to prevent hitting API rate limits.
   • Wait: Adjust the delay duration in the "Wait" node as needed to comply with API rate limits or desired timing.
6. Activate the Workflow: Once configured, activate the workflow in n8n.
7. Trigger the Workflow: Send a POST request to the webhook URL from your external system with the customer data.