CW20 Vault Contract

What does this contract do?

User can create vault which stores PGCoin(CW20).
User can deposit their PGCoin(CW20) to vault.

• All coin deposits are recorded in amount and deposit time

# when you query vault info
data:
  # all coins vault have
  collected: "300"
  # all deposits recoreded when you despoits coins to vault
  # receive time is UNIX time nanos
  ledger_list:
  - coin_amount: "100"
    # 22.12.16 08:04:16 GMT+00:00
    receive_time: "1671177856257807410"
  - coin_amount: "200"
    # 22.12.16 08:21.33 GMT+00:00
    receive_time: "1671178893141157818"
  # vault owner
  owner_addr: juno1sulm4ga8jgd73zs5q9wsumszu7ns6nkgxxvf3l

User can withdraw their PGCoin from vault in some condition.
Withdrawing can be executed after 1 minute of coin deposit.
coins to be withdrawn are determined in order of deposit.

• If you try to withdraw 200 coin from above vault at 22.12.16 08:06:00, it will fail
• If you try to withdraw 100 coin from above vault at 22.12.16 08:06:00, it will success
• If you try to withdraw 300 coin from above vault at 22.12.16 08:30:00, it will success
• If you try to withdraw 500 coin from above vault at 22.12.16 08:30:00, it will fail

CW20 Vault Contract Info

network: Juno test network(uni-5)
code_id: 3420
address: juno1cx3rj8qpxtzd8efqgjfxd2xjq6d0j5te3y7amzurp8upgwnyk43q44zljq

CW20 Contract(PGCoin) Info

network: Juno test network(uni-5)
address: juno1ka5p7mm8rfat7zs89xeegxyu9kxtljszckkdqfgv4e5x023c3hws7wjxaw
name: PGCoin
symbol: PGCoin
total_supply: 1000000000000
decimals: 6

How to check Contract Operation

1. install junod and set testnet config

you can modify contract command in sourceme.sh

source sourceme.sh

After you source the above variables, you should set the variables to junod

junod config chain-id $CHAIN_ID
junod config node $RPC

2. Query CW20 Contract Info

# Get balance info for juno1sulm4ga8jgd73zs5q9wsumszu7ns6nkgxxvf3l
junod query wasm contract-state smart $COIN_CONTRACT "$QUERY_OWNER_BALANCE" $NODE
# Get Token Info
junod query wasm contract-state smart $COIN_CONTRACT "$QUERY_TOKEN_INFO" $NODE

3. Create vault in cw20-vault Contract

Create Vault of {account}

junod tx wasm execute $VAULT_CONTRACT $CREATE $TXFLAG --from {account}  

Send cw20 token to cw20-vault

# Send 200 cw20 token to "juno1sulm4ga8jgd73zs5q9wsumszu7ns6nkgxxvf3l" vault
junod tx wasm execute $COIN_CONTRACT $SEND_TO_VAULT $TXFLAG --from testAccount1

If you want to modify msg, you should create binary message like below

// If cw20-vault contract receive cw20 token, cw20-vault contract transfer cw20 token to "juno1sulm4ga8jgd73zs5q9wsumszu7ns6nkgxxvf3l" vault
let binmsg = to_binary(&ReceiveMsg { vault_owner_addr: Addr::unchecked("juno1sulm4ga8jgd73zs5q9wsumszu7ns6nkgxxvf3l") }).unwrap();
println!("{}", binmsg);

Withdraw cw20 token from sender vault

junod tx wasm execute $VAULT_CONTRACT $WITHDRAW $TXFLAG --from testAccount1

Query vault

# Get Vault of juno1sulm4ga8jgd73zs5q9wsumszu7ns6nkgxxvf3l
junod query wasm contract-state smart $VAULT_CONTRACT $QUERY_VAULT $NODE

Unit test, Compiling

Unit test

cargo unit-test

Compiling

cargo wasm

Optimize for arm-64

docker run --rm -v "$(pwd)":/code \
  --mount type=volume,source="$(basename "$(pwd)")_cache",target=/code/target \
  --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
  cosmwasm/rust-optimizer-arm64:0.12.8

Other Resource

Please refer to the link below for help

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