neardefi/wrapped-ft

Wrapped token with transfer locks

Example with wNEAR on testnet

• $CONTRACT_ID - the account ID of the new token fNEAR
• $OWNER_ID - the account ID of the controller/owner.
• wrap.testnet - the token ID that is being wrapped/locked. wNEAR is used for the example.
• $ACCOUNT_ID - the account ID of a test account.

Init

near call $CONTRACT_ID --accountId=$OWNER_ID new '{
  "locked_token_account_id": "wrap.testnet",
  "meta": {"spec": "ft-1.0.0", "name": "Future NEAR", "symbol": "fNEAR", "decimals": 24},
  "owner_id": "'$OWNER_ID'"
}'

Wrap 20 NEAR into wNEAR (optional)

near call wrap.testnet --accountId=$OWNER_ID storage_deposit '' --amount=0.00125
near call wrap.testnet --accountId=$OWNER_ID near_deposit --amount=20

Storage deposit

near call wrap.testnet --accountId=$OWNER_ID storage_deposit '{"account_id": "'$CONTRACT_ID'"}' --amount=0.00125

Lock 10 wNEAR into fNEAR

near call wrap.testnet --accountId=$OWNER_ID --depositYocto=1 --gas=100000000000000 ft_transfer_call '{
  "receiver_id": "'$CONTRACT_ID'",
  "amount": "10000000000000000000000000",
  "msg": ""
}'

View methods

near view $CONTRACT_ID get_info
near view $CONTRACT_ID ft_metadata
near view $CONTRACT_ID ft_total_supply
near view $CONTRACT_ID ft_balance_of '{"account_id": "'$OWNER_ID'"}' 

Storage for the new account

near call $CONTRACT_ID --accountId=$ACCOUNT_ID storage_deposit '' --amount=0.00125

Transfer 1 fNEAR from the owner

near call $CONTRACT_ID --accountId=$OWNER_ID --depositYocto=1 ft_transfer '{
  "receiver_id": "'$ACCOUNT_ID'",
  "amount": "1000000000000000000000000"
}' 

Check balance

near view $CONTRACT_ID ft_balance_of '{"account_id": "'$OWNER_ID'"}' 
near view $CONTRACT_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' 

Attempt to transfer back (should fail, because not whitelisted)

near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 ft_transfer '{
  "receiver_id": "'$OWNER_ID'",
  "amount": "1000000000000000000000000"
}' 

Expected error:

'Not whitelisted for transfers'

Attempt to unwrap (should fail, still locked)

near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 --gas=100000000000000 unwrap ''

Expected error:

'The token is still locked'

Whitelist transfers for the account

near call $CONTRACT_ID --accountId=$OWNER_ID --depositYocto=1 add_transfer_whitelist '{
  "account_id": "'$ACCOUNT_ID'"
}'

Transfer of 0.1 by the account to the owner

near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 ft_transfer '{
  "receiver_id": "'$OWNER_ID'",
  "amount": "100000000000000000000000"
}' 

Unlock the unwrapping by the owner

near call $CONTRACT_ID --accountId=$OWNER_ID --depositYocto=1 unlock ''

Attempt to unwrap the token (should fail, no wNEAR storage)

near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 --gas=100000000000000 unwrap ''

Expected error:

'The account is not registered'

Verify balances didn't change

near view $CONTRACT_ID ft_balance_of '{"account_id": "'$OWNER_ID'"}' 
near view $CONTRACT_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' 

Storage deposit for wNEAR

near call wrap.testnet --accountId=$ACCOUNT_ID storage_deposit '' --amount=0.00125

Unwrap the token

near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 --gas=100000000000000 unwrap ''

Verify balances of the account for fNEAR and wNEAR

near view $CONTRACT_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' 
near view wrap.testnet ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}'