/
SimpleMarketplace.sol
74 lines (61 loc) · 1.42 KB
/
SimpleMarketplace.sol
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pragma solidity >=0.4.25 <0.6.0;
contract SimpleMarketplace
{
enum StateType {
ItemAvailable,
OfferPlaced,
Accepted
}
address public InstanceOwner;
string public Description;
int public AskingPrice;
StateType public State;
address public InstanceBuyer;
int public OfferPrice;
constructor(string memory description, int price) public
{
InstanceOwner = msg.sender;
AskingPrice = price;
Description = description;
State = StateType.ItemAvailable;
}
function MakeOffer(int offerPrice) public
{
if (offerPrice == 0)
{
revert();
}
if (State != StateType.ItemAvailable)
{
revert();
}
if (InstanceOwner == msg.sender)
{
revert();
}
InstanceBuyer = msg.sender;
OfferPrice = offerPrice;
State = StateType.OfferPlaced;
}
function Reject() public
{
if ( State != StateType.OfferPlaced )
{
revert();
}
if (InstanceOwner != msg.sender)
{
revert();
}
InstanceBuyer = 0x0000000000000000000000000000000000000000;
State = StateType.ItemAvailable;
}
function AcceptOffer() public
{
if ( msg.sender != InstanceOwner )
{
revert();
}
State = StateType.Accepted;
}
}