Created
February 12, 2018 20:09
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Created using browser-solidity: Realtime Ethereum Contract Compiler and Runtime. Load this file by pasting this gists URL or ID at https://ethereum.github.io/browser-solidity/#version=soljson-v0.4.19+commit.c4cbbb05.js&optimize=false&gist=
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pragma solidity ^0.4.0; | |
contract Vaults { | |
struct Deposit { | |
bool isCreated; | |
uint amount; | |
uint takenInterest; | |
uint depositBlock; | |
uint releaseRequestBlock; | |
address releaseTo; | |
uint blocksPerInterest; | |
uint interestFraction; | |
} | |
struct Vault { | |
uint totalOwned; | |
mapping(address => Deposit) deposits; | |
} | |
mapping(address => Vault) vaults; | |
function Vaults() public { } | |
function put(address vaultOwner, uint blocksPerInterest, uint interestFraction) public payable { | |
Vault storage v = vaults[vaultOwner]; | |
// return if deposit already found | |
if (v.deposits[msg.sender].isCreated){ | |
return; | |
} | |
Deposit memory deposit = Deposit({ | |
isCreated: true, | |
amount: msg.value, | |
takenInterest: 0, | |
depositBlock: now, | |
releaseRequestBlock: 0, | |
releaseTo: msg.sender, | |
blocksPerInterest: blocksPerInterest, | |
interestFraction: interestFraction | |
}); | |
v.deposits[msg.sender] = deposit; | |
} | |
function requestRelease(address vaultOwner, address releaseTo) public { | |
Vault storage v = vaults[vaultOwner]; | |
Deposit storage deposit = v.deposits[msg.sender]; | |
// return if deposit not found | |
if (!deposit.isCreated) { | |
return; | |
} | |
// return if already requested | |
if (deposit.releaseRequestBlock != 0) { | |
return; | |
} | |
deposit.releaseRequestBlock = now; | |
deposit.releaseTo = releaseTo; | |
} | |
function release(address depositOwner) public { | |
Vault storage v = vaults[msg.sender]; | |
Deposit storage deposit = v.deposits[depositOwner]; | |
// return if deposit not found | |
if (!deposit.isCreated) { | |
return; | |
} | |
// return if release not requested | |
if (deposit.releaseRequestBlock == 0) { | |
return; | |
} | |
deposit.isCreated = false; | |
uint blocks = deposit.releaseRequestBlock - deposit.depositBlock; | |
uint interestParts = blocks / deposit.blocksPerInterest; | |
if (blocks % deposit.blocksPerInterest != 0) { | |
interestParts++; | |
} | |
uint interest = deposit.amount * interestParts / deposit.interestFraction; | |
if (interest > deposit.amount) { | |
return; | |
} | |
uint remain = deposit.amount - interest; | |
if (v.totalOwned < remain) { | |
return; | |
} | |
deposit.releaseTo.transfer(remain); | |
v.totalOwned -= remain; | |
} | |
} | |
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