signup.js

signup.js

// Next.js API route support: https://nextjs.org/docs/api-routes/introduction

export default function handler(req, res) {
  if (req.method === "POST") {
    // parse incoming request
    const cred = JSON.parse(req.body);

    // option object for first request, filter checks if email already exists in the database
    const options1 = {
      method: "POST",
      headers: {
        Authorization: process.env.XATA,
        "Content-Type": "application/json",
      },
      body: `{"filter":{"email":{"$contains":"${cred.email}"}},"page":{"size":15}}`,
    };

    //option object for second request, body contains email and password to create a new user
    const options2 = {
      method: "POST",
      headers: {
        Authorization: process.env.XATA,
        "Content-Type": "application/json",
      },
      body: JSON.stringify(cred),
    };

    (async () => {
      try {
        // check if user already exists
        const response = await fetch(
          `${process.env.database}:main/tables/users/query`,
          options1
        );
        const data = await response.json();
        // returns error message if user exists
        if (data.records.length > 0) {
          return res.status(400).json({ message: "User already exists" });
        } else {
          // create a new user if user does not exist
          const response2 = await fetch(
            `${process.env.database}:main/tables/users/data?columns=id`,
            options2
          );
          const data2 = await response2.json();
          return res.status(200).json(data2);
        }
      } catch (err) {
        console.log(err);
        return res.status(500).json({ message: "An error occured" });
      }
    })();
  }
}