Connect Firebase Realtime Database and Personio employees in our serverless environment

class FirebaseSourceGetFromRealtimeDb {
    async init() {
        // TODO: Create your firebase credential
        // More info at https://yepcode.io/docs/integrations/firebase/#credential-configuration
        this.firebase = yepcode.integration.firebase(
            "your-firebase-credential-name"
        );
        this.db = getDatabase(this.firebase);
        this.dbRef = ref(this.db);
    }

    async fetch(publish, done) {
        // TODO: Customize the path to the firebase object
        const snapshot = await get(child(this.dbRef, "/path-to-the-objects"));
        if (snapshot.exists()) {
            for (const item of Object.values(snapshot.val())) {
                await publish(item);
            }
        }
        done();
    }

    async close() {
        deleteApp(this.firebase);
    }
}

class HttpTargetPersonioCreateEmployee {
    async init() {
        // TODO: Create your http credential with personio information:
        // More info at https://yepcode.io/docs/integrations/http/#credential-configuration
        // baseUrl: https://api.personio.de/v1
        this.httpClient = yepcode.integration.http(
            "your-http-personio-credential-name"
        );

        // TODO: You need to define two env vars (https://yepcode.io/docs/processes/team-variables)
        const {
            data: {
                bearerToken
            },
        } = await this.httpClient.post("/auth", {
            client_id: yepcode.env.PERSONIO_CLIENT_ID,
            client_secret: yepcode.env.PERSONIO_CLIENT_SECRET,
        });
        this.bearerToken = bearerToken;
    }

    async consume(item) {
        // TODO: Customize your request checking the API documentation:
        // https://developer.personio.de/reference/post_company-employees
        const response = await this.httpClient.post(
            "/company/employees", {
                // TODO: map your fields from item
                employee: {
                    email: item.email,
                    first_name: item.first_name,
                    last_name: item.last_name,
                    gender: "male",
                    position: "developer",
                    subcompany: "ACME",
                    department: "IT",
                    office: "Madrid",
                    hire_date: "2020-01-31",
                    weekly_working_hours: 40,
                    custom_attributes: {
                        "dynamic_ {{  field uid  }} ": "German",
                    },
                },
            }, {
                headers: {
                    Authorization: `Bearer ${this.bearerToken}`,
                },
            }
        );

        // A new token is recieved in each request (https://developer.personio.de/reference/auth-1)
        this.bearerToken = response.headers.authorization;
    }

    async close() {}
}