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yarn add medusa-plugin-whatsapp

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TWILIO_AUTH_SID= <your twilio auth code> // it begins with AC
TWILIO_AUTH_TOKEN= <your twilio auth token>

#### Only for testing
TEST_SEND_NUMBER= <sandbox number>
TEST_RECIEVER_NUMBER= <your sandbox member number>

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///...other plugins
  {
     resolve:"medusa-plugin-whatsapp":
    {
      options:{
      account_sid: process.env.TWILIO_AUTH_SID,
      auth_token: process.env.TWILIO_AUTH_TOKEN,
      whatsappHandlerInterface:"nameOftheHandlerService"
      }
    }

  }

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// please note you'll have to configure the message receive hooks in twilio to point to <Your server url>/whatsapp/received

export default class myService implements WhatsappHandlerInterface {

  whatsappHandler (container: MedusaContainer, body: T, activeSession: WhatsappSession):Promise<MessagingResponse>; {
    // your code to process the incoming message
  }

// please note you'll have to configure the global conversation hooks in twilio to point to <Your server url>/whatsapp/prepare


whatsappConversationPrehookHandler: (
    container: MedusaContainer,
    body: T,
    activeSession?: WhatsappSession
  ) => Promise<
    | {
        body?: string;
        author?: string;
        attributes?: Record<string, string>;
      }
    | { friendly_name?: string }>
  {
    // your code to handle the incoming conversation message
  }

similarly the conversation posthookhandler can be configured with the post hook in twilio pointing to <Your server url>/whatsapp/do

whatsappConversationPosthookHandler (container: MedusaContainer, body: T, activeSession?,WhatsappSession) => Promise<{
        body?: string;
        author?: string;
        attributes?: Record<string, string>;
    } | {
        friendly_name?: string;
    }>{
      // your code

    }

}