Connect ZoomInfo contacts and Send email in our serverless environment

class HttpSourceZoominfoContactSearch {
    async init() {
        // TODO: Create your http credential with ZoomInfo information:
        // More info at https://yepcode.io/docs/integrations/http/#credential-configuration
        // baseUrl: https://api.zoominfo.com
        this.httpClient = yepcode.integration.http(
            "your-http-zoominfo-credential-name"
        );

        // TODO: You need to define two env vars (https://yepcode.io/docs/processes/team-variables) for credentials
        this.jwtToken = await this.httpClient
            .post("authenticate", {
                username: yepcode.env.ZOOMINFO_USERNAME,
                password: yepcode.env.ZOOMINFO_PASSWORD,
            })
            .then((response) => response.data.jwt);
    }

    async fetch(publish, done) {
        // TODO: Customize your request checking the API documentation:
        // https://api-docs.zoominfo.com/
        await this.httpClient
            .post(
                "search/contact", {
                    managementLevel: "directors",
                    companyType: "public",
                    zipCode: "19101",
                }, {
                    headers: {
                        Authorization: `Bearer ${this.jwtToken}`,
                    },
                }
            )
            .then(async ({
                data
            }) => {
                for (const contact of data) {
                    await publish(contact);
                }
            });
        done();
    }

    async close() {}
}

class SmtpTargetSendEmail {
    async init() {
        // TODO: Create your smtp credential
        // More info at https://yepcode.io/docs/integrations/smtp/#credential-configuration
        this.smtp = yepcode.integration.smtp("your-smtp-credential-name");
        this.items = [];
    }

    async consume(item) {
        // we save the items for later
        this.items.push(item);
        // we could send a mail per item here if we want to
    }

    async close() {
        // we want to send a resume mail so we send it at the end
        // TODO: Customize email content
        const text = `Here are the items we got:
    ${this.items.map((item) => ` * ${item.id}: ${item.name}`).join("\n")}`;
        // TODO: Customize email params: from, to and subject
        await this.smtp.sendMail({
            from: "your-email@example.com",
            to: "the-target@example.com",
            subject: `Choose your subject`,
            text,
        });
    }
}