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A WhatsApp chatbot that lets users validate a location by typing a Brazilian ZIP code (CEP)

• Demo
• Source code

This small project is a chatbot MVP you can use as a starting point for your own projects. The structure is flexible, so you can build your own menus and their interactions on top of it. I use the State pattern to manage chat states (menus) and the Strategy pattern to send content.

Features

• CEP API integration
• Users enter a CEP and get the address details to confirm the location
• Navigation menus (State pattern under the hood)
• Strategy pattern for dynamic content delivery
• Sends the bot's login QR code by email