import FlowToken from 0x1654653399040a61 import FungibleToken from 0xf233dcee88fe0abe import LendingPool from 0x7492e2f9b4acea9a import LendingComptroller from 0xf80cb737bfe7c792 import LendingConfig from 0x2df970b6cdee5735 import LendingInterfaces from 0x2df970b6cdee5735 transaction(amountUnderlyingToRedeem: UFix64) { let tokenVault: &FlowToken.Vault let userCertificate: &{LendingInterfaces.IdentityCertificate} prepare(signer: auth(Storage, Capabilities) &Account) { let storagePath = /storage/flowTokenVault let receiverPath = /public/flowTokenReceiver let balancePath = /public/flowTokenBalance if (signer.storage.borrow<&FlowToken.Vault>(from: storagePath) == nil) { signer.storage.save(<-FlowToken.createEmptyVault(vaultType: Type<@FlowToken.Vault>()), to: storagePath) signer.capabilities.publish( signer.capabilities.storage.issue<&{FungibleToken.Receiver}>(storagePath), at: receiverPath ) signer.capabilities.publish( signer.capabilities.storage.issue<&{FungibleToken.Balance}>(storagePath), at: balancePath ) } self.tokenVault = signer.storage.borrow<&FlowToken.Vault>(from: storagePath) ?? panic("cannot borrow reference to FlowToken Vault") // Get protocol-issued user certificate if (signer.storage.borrow<&{LendingInterfaces.IdentityCertificate}>(from: LendingConfig.UserCertificateStoragePath) == nil) { destroy <-signer.storage.load<@AnyResource>(from: LendingConfig.UserCertificateStoragePath) let userCertificate <- LendingComptroller.IssueUserCertificate() signer.storage.save(<-userCertificate, to: LendingConfig.UserCertificateStoragePath) } self.userCertificate = signer.storage.borrow<&{LendingInterfaces.IdentityCertificate}>(from: LendingConfig.UserCertificateStoragePath) ?? panic("cannot borrow reference to UserCertificate") } execute { let redeemedVault <- LendingPool.redeemUnderlying(userCertificate: self.userCertificate, numUnderlyingToRedeem: amountUnderlyingToRedeem) self.tokenVault.deposit(from: <-redeemedVault) } }

Transaction