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pragma solidity >=0.4.22 <0.7.0; | |
import "./HitchensUnorderedKeySet.sol"; | |
import "./SafeRemotePurchase.sol"; | |
import "./Ownable.sol"; | |
contract FleaMarketFactory is Ownable { | |
using HitchensUnorderedKeySetLib for HitchensUnorderedKeySetLib.Set; | |
HitchensUnorderedKeySetLib.Set private widgetSet; | |
string public contractName; | |
struct WidgetStruct { | |
// pointer on the child contract | |
address purchaseContract; | |
} | |
mapping(bytes32 => WidgetStruct) private widgets; | |
constructor() public { | |
contractName = "FleaMarket Smart Contract"; | |
} | |
event LogCreatePurchaseContract( | |
address sender, | |
bytes32 key, | |
address contractAddress | |
); | |
event LogRemovePurchaseContract(address sender, bytes32 key); | |
// commissionRate, for example, 350 ==> (350/100) = 3.5% | |
function createPurchaseContract( | |
bytes32 key, | |
string calldata description, | |
string calldata ipfsImageHash, | |
uint256 commissionRate | |
) external payable returns (bool createResult) { | |
// Note that this will fail automatically if | |
// the key already exists. | |
widgetSet.insert(key); | |
WidgetStruct storage wgt = widgets[key]; | |
// msg.sender would be the seller | |
SafeRemotePurchase c = | |
(new SafeRemotePurchase).value(msg.value)( | |
commissionRate, | |
msg.sender, | |
key, | |
description, | |
ipfsImageHash | |
); | |
/* | |
When a new children contract is created | |
the msg.sender value passed to the Ownable | |
is the address of the parent contract. | |
So we need to tell the child contract who is the contract manager | |
*/ | |
c.transferOwnership(owner()); | |
// cast contract pointer to address | |
address newContract = address(c); | |
wgt.purchaseContract = newContract; | |
emit LogCreatePurchaseContract(msg.sender, key, newContract); | |
return true; | |
} | |
function getContractCount() public view returns (uint256 contractCount) { | |
return widgetSet.count(); | |
} | |
function getContractKeyAtIndex(uint256 index) | |
external | |
view | |
returns (bytes32 key) | |
{ | |
return widgetSet.keyAtIndex(index); | |
} | |
function getContractByKey(bytes32 key) | |
external | |
view | |
returns (address contractAddress) | |
{ | |
require( | |
widgetSet.exists(key), | |
"Can't get a widget that doesn't exist." | |
); | |
WidgetStruct storage w = widgets[key]; | |
return (w.purchaseContract); | |
} | |
function removeContractByKey(bytes32 key) | |
external | |
onlyOwner | |
returns (bool result) | |
{ | |
// Note that this will fail automatically if the key doesn't exist | |
widgetSet.remove(key); | |
delete widgets[key]; | |
emit LogRemovePurchaseContract(msg.sender, key); | |
return true; | |
} | |
} |
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