@daimo/pay/build/src/world-mini-app/useWorldSignIn.js

Seamless crypto payments. Onboard users from any chain, any coin into your app with one click.

import { MiniKit } from '@worldcoin/minikit-js';
import { useState, useCallback } from 'react';

function useWorldSignIn() {
  const [worldUser, setWorldUser] = useState(null);
  const [isLoadingSignIn, setIsLoadingSignIn] = useState(false);
  const signInWithWorld = useCallback(async () => {
    if (worldUser != null) {
      console.log("[WORLD_SIGNIN] user already signed in");
      return worldUser;
    }
    setIsLoadingSignIn(true);
    try {
      if (!MiniKit.isInstalled()) {
        console.log("[WORLD_SIGNIN] MiniKit is not installed");
        return null;
      }
      const res = await fetch("https://pay.daimo.com/api/worldcoin/siwe-nonce");
      const { nonce } = await res.json();
      console.log("[WORLD_SIGNIN] nonce", nonce);
      const nextWeek = new Date(Date.now() + 7 * 24 * 60 * 60 * 1e3);
      const yesterday = new Date(Date.now() - 24 * 60 * 60 * 1e3);
      const { commandPayload: generateMessageResult, finalPayload } = await MiniKit.commandsAsync.walletAuth({
        nonce,
        requestId: "0",
        expirationTime: nextWeek,
        notBefore: yesterday,
        statement: "Sign in"
      });
      console.log(
        "[WORLD_SIGNIN] generateMessageResult",
        generateMessageResult
      );
      console.log("[WORLD_SIGNIN] finalPayload", finalPayload);
      if (finalPayload.status === "error") {
        return null;
      } else {
        const response = await fetch(
          "https://pay.daimo.com/api/worldcoin/complete-siwe",
          {
            method: "POST",
            headers: {
              "Content-Type": "application/json"
            },
            body: JSON.stringify({
              payload: finalPayload,
              nonce
            })
          }
        );
        const verificationResponse = await response.json();
        console.log(
          "[WORLD_SIGNIN] verification response",
          verificationResponse
        );
        if (verificationResponse.isValid) {
          console.log("[WORLD_SIGNIN] user is valid");
          const user = await MiniKit.getUserByAddress(finalPayload.address);
          setWorldUser(user);
          return user;
        }
      }
    } catch (error) {
      console.error("[WORLD_SIGNIN] error", error);
    } finally {
      setIsLoadingSignIn(false);
    }
    return null;
  }, [setWorldUser, setIsLoadingSignIn, worldUser]);
  return { signInWithWorld, worldUser, isLoadingSignIn };
}

export { useWorldSignIn };
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