tx · GEyqwWqGD7fMumMS1mdxgm4Eu2w4GMbZNz8eDbGms79

3Mz9N7YPfZPWGd4yYaX6H53Gcgrq6ifYiH7:  -0.01400000 Waves

2020.10.20 14:10 [1228811] smart account 3Mz9N7YPfZPWGd4yYaX6H53Gcgrq6ifYiH7 > SELF 0.00000000 Waves

{
    "type": 13,
    "id": "GEyqwWqGD7fMumMS1mdxgm4Eu2w4GMbZNz8eDbGms79",
    "fee": 1400000,
    "feeAssetId": null,
    "timestamp": 1603192287084,
    "version": 2,
    "chainId": 84,
    "sender": "3Mz9N7YPfZPWGd4yYaX6H53Gcgrq6ifYiH7",
    "senderPublicKey": "2M25DqL2W4rGFLCFadgATboS8EPqyWAN3DjH12AH5Kdr",
    "proofs": [
        "5gK94hMic5tFbFxAs69DpZSJ6dHT6kDzLZhQCH4LJxhgXquFRVkTsoU63GvvvXkqQ99EPNuc7bwJotjsD6jWzDYV"
    ],
    "script": null,
    "height": 1228811,
    "applicationStatus": "succeeded",
    "spentComplexity": 0
}

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{-# STDLIB_VERSION 3 #-}
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{-# SCRIPT_TYPE ACCOUNT #-}
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{-# CONTENT_TYPE DAPP #-}
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let USDT = "3EJm7ZNZRjWngjVQ6qjFUef3iRUyJZoT4VYoCYaeVdqZ"
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let USDN = "37jVHZK2cgbNTAkMCLGdrbzvG1rwMjTrpD2TGzkictwL"
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let idUSDN = fromBase58String(USDN)
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let idUSDT = fromBase58String(USDT)
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let withdrawDelay = 1
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let decimalPartUSDN = 1000000
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let decimalPartUSDT = 1000000
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let minimalAmountToSwapUSDT = (10000 * decimalPartUSDN)
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let minimalAmountToSwapUSDN = (10000 * decimalPartUSDT)
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func collectKey (address,amountToSwapInKey,allowToWithdrawHeight) = ((((toString(address) + "_WITHDRAW_") + toString(amountToSwapInKey)) + "_HEIGHT_") + toString(allowToWithdrawHeight))
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@Callable(contextObj)
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func swapUSDTtoUSDN () = {
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    let payment =     match contextObj.payment {
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        case p: AttachedPayment => 
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            p
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        case _ => 
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            throw("Payment not attached")
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    }
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    let assetIdReceived = payment.assetId
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    let tokenReceiveAmount = payment.amount
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    let userAddress = contextObj.caller
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    let currentClientBalanceUSDT =     match getInteger(this, (toString(userAddress) + "_balance")) {
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        case currentBalance: Int => 
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            value(getInteger(this, (toString(userAddress) + "_balance")))
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        case _ => 
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            0
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    }
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    if ((assetIdReceived != idUSDT))
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        then throw("to swap USDT to USDN you need attach payment in USDT")
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        else if ((minimalAmountToSwapUSDT > tokenReceiveAmount))
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            then throw((("you can swap at least " + toString((minimalAmountToSwapUSDT / decimalPartUSDT))) + " tokens"))
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            else ScriptResult(WriteSet([DataEntry((toString(contextObj.caller) + "_balance"), (currentClientBalanceUSDT + tokenReceiveAmount))]), TransferSet([ScriptTransfer(contextObj.caller, tokenReceiveAmount, idUSDN)]))
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    }
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@Callable(contextObj)
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func initializationUSDNtoUSDTswap () = {
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    let payment =     match contextObj.payment {
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        case p: AttachedPayment => 
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            p
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        case _ => 
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            throw("Payment not attached")
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    }
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    let assetIdReceived = payment.assetId
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    let paymentAmount = payment.amount
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    let userAddress = contextObj.caller
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    let currentClientBalanceUSDT =     match getInteger(this, (toString(userAddress) + "_balance")) {
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        case currentBalance: Int => 
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            getIntegerValue(this, (toString(userAddress) + "_balance"))
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        case _ => 
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            0
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    }
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    if ((assetIdReceived != idUSDN))
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        then throw("to swap USDN to USDT you need attach payment in USDN")
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        else if (if ((paymentAmount > currentClientBalanceUSDT))
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            then true
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            else (minimalAmountToSwapUSDN > paymentAmount))
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            then throw("swap amount fail")
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            else {
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                let allowToWithDrawHeight = (height + withdrawDelay)
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                if (isDefined(getString(this, collectKey(contextObj.caller, paymentAmount, allowToWithDrawHeight))))
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                    then throw("you have already started withdrawal process, wait next block")
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                    else ScriptResult(WriteSet([DataEntry((toString(contextObj.caller) + "_balance"), (currentClientBalanceUSDT - paymentAmount)), DataEntry(collectKey(contextObj.caller, paymentAmount, allowToWithDrawHeight), "not_withdrawn")]), TransferSet(nil))
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                }
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    }
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@Callable(contextObj)
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func swapUSDNtoUSDT (amountToSwapInKey,heightInKey) = {
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    let key = collectKey(contextObj.caller, amountToSwapInKey, heightInKey)
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    let withdrawnInfo =     match getString(this, key) {
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        case withdrawnInfo: String => 
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            getStringValue(this, key)
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        case _ => 
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            throw(((("this key doesn't exists " + key) + " at address  ") + toString(this)))
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    }
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    if (if ((height >= heightInKey))
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        then (withdrawnInfo == "not_withdrawn")
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        else false)
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        then ScriptResult(WriteSet([DataEntry(key, "withdrawn")]), TransferSet([ScriptTransfer(contextObj.caller, amountToSwapInKey, idUSDT)]))
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        else throw((("withdrawal is possible after " + toString(heightInKey)) + " height or you have already withdrawn USDT"))
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    }
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1
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# no script

github/deemru/w8io/169f3d6 
20.70 ms ◑