Connect Amazon S3 CSV file and Send WhatsApp messages with template using Vonage API in our serverless environment

class AwsS3SourceReadRemoteCsv {
    async init() {
        // TODO: Create your aws-s3 credential
        // More info at https://yepcode.io/docs/integrations/aws-s3/#credential-configuration
        this.awsS3 = yepcode.integration.awsS3("your-aws-s3-credential-name");
    }

    async fetch(publish, done) {
        // TODO: Customize the command to be executed
        // More info at: https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-s3/interfaces/getobjectcommandinput.html
        const getObjectCommand = new GetObjectCommand({
            Bucket: "your-bucket-name",
            Key: "your-file-name",
        });

        const getObjectResult = await this.awsS3.send(getObjectCommand);

        // Result.Body is a stream of object content
        getObjectResult.Body.pipe(
                csv.parse({
                    delimiter: ",",
                    columns: true,
                })
            )
            .on("data", publish)
            .on("end", done);
    }

    async close() {}
}

class AxiosTargetVonageSendWhatsappTemplate {
    async init() {
        // TODO: Create your axios credential with Vonage information:
        // More info at https://yepcode.io/docs/integrations/axios/#credential-configuration
        // baseUrl: https://messages-sandbox.nexmo.com/v1
        // username: your-vonage-api-key
        // password: your-vonage-api-secret
        this.axiosClient = yepcode.integration.axios(
            "your-axios-vonage-credential-name"
        );
    }

    async consume(item) {
        // TODO: Customize your request checking the API documentation:
        // https://developer.vonage.com/messages/code-snippets/whatsapp/send-mtm

        const WHATSAPP_NUMBER = "14157386204"; // The WhatsApp number that has been allocated to you by Vonage.
        const WHATSAPP_TEMPLATE_NAMESPACE = "9b6b4fcb_da19_4a26_8fe8_78074a91b584";
        const WHATSAPP_TEMPLATE_NAME = "verify";
        await this.axiosClient.post("/messages", {
            from: WHATSAPP_NUMBER,
            to: item.to,
            message_type: "template",
            channel: "whatsapp",
            whatsapp: {
                policy: "deterministic",
                locale: "en-GB",
            },
            template: {
                name: `${WHATSAPP_TEMPLATE_NAMESPACE}:${WHATSAPP_TEMPLATE_NAME}`,
                parameters: ["YepCode verification", "64873", 10],
            },
        });
    }

    async close() {}
}