Connect Redis and Send email in our serverless environment

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

    async fetch(publish, done) {
        // TODO: Customize the pattern to search keys
        const keys = await this.redis.keys("*");
        for (const key of keys) {
            const item = await this.redis.get(key);
            await publish(JSON.parse(item));
        }
        done();
    }

    async close() {
        await this.redis.disconnect();
    }
}

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,
        });
    }
}