godprotocol/virtual_machine/Datatypes/functions/wallet.js

A distributed computing environment for Web 4.0 — integrating AI, decentralisation, and virtual computation.

class Wallet{
  constructor(instance){
    this.instance = instance;
  }

  transfer = async(price, recipient)=>{
    let {vm} = this.instance.account
    let folder = await this.instance._folder()
    let wallet_folder = await folder.child('wallet')
    let tok = await (await wallet_folder.readone({_id: price.token})).literal()
    if (!tok) return {successful: false, message:"Doesn't have token"}
    if(tok.value< price.value) return {successful: false, message:"Insufficient balance"}

    await wallet_folder.update({_id: tok._id}, {value: {$dec: price.value}})

    let transactions = await wallet_folder.child(price.token)
    let recent_tx = await (await transactions.readone()).literal()
    let tx = {value: price.value, previous: await vm.hash(recent_tx), recipient: recipient.ref(), timestamp: Date.now()}
    tx.hash = await vm.hash(tx)

    let res = await transactions.write(tx)
    await wallet_folder.child('transactions').write(await res.to_address())

    let recipient_folder = await recipient._folder()
    let recipient_wallet = await recipient_folder.child('wallet'), sender_ref = `${res.ref()}:${tx.hash}`;
    let rec_tok = await recipient_wallet.readone({_id: price.token})
    let rec_txs = await recipient_wallet.child(price.token), rec_tx;

    if(!rec_tok){
      await recipient_wallet.write({_id: price.token, value: price.value})
      rec_tx = {
        value: price.value, previous: 'genesis', sender_ref
      }
      rec_tx.hash = await vm.hash(rec_tx)
      await rec_txs.write(rec_tx)
    }else {
      await recipient_wallet.update({_id: price.token}, {value: {$inc: price.value}})
      let rec_prev_tx = await (await rec_txs.readone()).literal()
      rec_tx = {value: price.value, previous: await vm.hash(rec_prev_tx), sender_ref}
      rec_tx.hash = await vm.hash(rec_tx)

      await rec_txs.write(rec_tx)
    }
    
    return {successful: true, message: 'Transfer completed.'}
  }
}

export default Wallet;