mango-v4-ui/utils/wallet.ts

import { Wallet } from '@project-serum/anchor'
import { Wallet as WalletAdapter } from '@solana/wallet-adapter-react'
import { Keypair, PublicKey, Transaction } from '@solana/web3.js'
import { notify } from './notifications'

export default class EmptyWallet implements Wallet {
  constructor(readonly payer: Keypair) {}

  async signTransaction(tx: Transaction): Promise<Transaction> {
    tx.partialSign(this.payer)
    return tx
  }

  async signAllTransactions(txs: Transaction[]): Promise<Transaction[]> {
    return txs.map((t) => {
      t.partialSign(this.payer)
      return t
    })
  }

  get publicKey(): PublicKey {
    return this.payer.publicKey
  }
}

export const handleWalletConnect = (wallet: WalletAdapter) => {
  if (!wallet) {
    return
  }

  wallet?.adapter?.connect().catch((e) => {
    if (e.name.includes('WalletLoadError')) {
      notify({
        title: `${wallet.adapter.name} Error`,
        type: 'error',
        description: `Please install ${wallet.adapter.name} and then reload this page.`,
      })
    }
  })
}