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AbstractMarketPlace.sol
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AbstractMarketPlace.sol
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pragma solidity ^0.5.8;
import "@openzeppelin/contracts/introspection/ERC165.sol";
import "../interfaces/MarketPlace.sol";
import "../StatusCodes.sol";
import "../interfaces/TradeResource.sol";
contract AbstractMarketPlace is TradeResource, MarketPlace, ERC165, StatusCodes {
bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;
enum Stage { Pending, Open, Closed }
struct Request {
uint ID;
uint deadline;
bool isDefined;
Stage reqStage;
bool isDecided;
uint[] offerIDs;
uint closingBlock;
uint[] acceptedOfferIDs;
address requestMaker;
uint decisionTime;
}
struct Offer {
uint ID;
uint requestID;
address offerMaker;
bool isDefined;
Stage offStage;
}
uint waitBeforeDeleteBlocks;
uint internal reqNum;
uint internal offNum;
mapping (uint => Request) internal requests;
mapping (uint => Offer) internal offers;
uint[] internal openRequestIDs;
uint[] internal closedRequestIDs;
event RequestAdded(uint requestID, uint deadline);
event RequestExtraAdded(uint requestID);
event OfferAdded(uint offerID, uint requestID, address offerMaker);
event OfferExtraAdded(uint offerID);
event TradeSettled(uint requestID, uint offerID);
constructor() public {
reqNum = 1;
offNum = 1;
waitBeforeDeleteBlocks = 1;
_registerInterface(_INTERFACE_ID_ERC165);
_registerInterface(this.getMarketInformation.selector
^ this.getOpenRequestIdentifiers.selector
^ this.getClosedRequestIdentifiers.selector
^ this.getRequest.selector
^ this.getRequestOfferIDs.selector
^ this.isOfferDefined.selector
^ this.getOffer.selector
^ this.submitOffer.selector
^ this.isRequestDefined.selector
^ this.isRequestDecided.selector
^ this.getRequestDecision.selector
^ this.settleTrade.selector);
}
function getMarketInformation() external view returns (uint8 status, address ownerAddress);
function getOpenRequestIdentifiers() external view returns (uint8 status, uint[] memory) {
return (Successful, openRequestIDs);
}
function getClosedRequestIdentifiers() external view returns (uint8 status, uint[] memory) {
return (Successful, closedRequestIDs);
}
function getRequest(uint requestIdentifier) external view returns (uint8 status, uint deadline, uint stage, address requestMaker) {
if(!requests[requestIdentifier].isDefined) {
return (UndefinedID, 0, 0, address(0));
}
require(requests[requestIdentifier].isDefined);
return (Successful, requests[requestIdentifier].deadline, uint(requests[requestIdentifier].reqStage), requests[requestIdentifier].requestMaker);
}
function getRequestOfferIDs(uint requestIdentifier) external view returns (uint8 status, uint[] memory offerIDs) {
if(!requests[requestIdentifier].isDefined) {
return (UndefinedID, new uint[](0));
}
require(requests[requestIdentifier].isDefined);
return (Successful, requests[requestIdentifier].offerIDs);
}
function isOfferDefined(uint offerIdentifier) public view returns (uint8 status, bool) {
return (Successful, offers[offerIdentifier].isDefined);
}
function getOffer(uint offerIdentifier) external view returns (uint8 status, uint requestID, address offerMaker, uint stage) {
if(!offers[offerIdentifier].isDefined) {
return (UndefinedID, 0, address(0), 0);
}
require(offers[offerIdentifier].isDefined);
return (Successful, offers[offerIdentifier].requestID, offers[offerIdentifier].offerMaker, uint(offers[offerIdentifier].offStage));
}
function submitOffer(uint requestID) public returns (uint8 status, uint offerID) {
Offer memory offer;
offer.requestID = requestID;
offer.offerMaker = msg.sender;
offer.ID = offNum;
offNum += 1;
offer.isDefined = true;
offer.offStage = Stage.Pending;
offers[offer.ID] = offer;
requests[offer.requestID].offerIDs.push(offer.ID);
emit FunctionStatus(Successful);
emit OfferAdded(offer.ID, offer.requestID, offer.offerMaker);
return (Successful, offer.ID);
}
function isRequestDefined(uint requestIdentifier) public view returns (uint8 status, bool) {
return (Successful, requests[requestIdentifier].isDefined);
}
function isRequestDecided(uint requestIdentifier) public view returns (uint8 status, bool) {
if(!requests[requestIdentifier].isDefined) {
return (UndefinedID, false);
}
require(requests[requestIdentifier].isDefined);
return (Successful, requests[requestIdentifier].isDecided);
}
function settleTradeInsecure(uint requestID, uint offerID) internal returns (uint8 status) {
emit TradeSettled(requestID, offerID);
return Successful;
}
function settleTrade(uint requestID, uint offerID) public returns (uint8 status) {
(, bool isRequestDefined) = isRequestDefined(requestID);
if (!isRequestDefined) {
emit FunctionStatus(UndefinedID);
return UndefinedID;
}
(, bool isOfferDefined) = isOfferDefined(offerID);
if (!isOfferDefined) {
emit FunctionStatus(UndefinedID);
return UndefinedID;
}
settleTradeInsecure(requestID, offerID);
}
function getRequestDecisionTime(uint requestIdentifier) public view returns (uint8 status, uint) {
if(!requests[requestIdentifier].isDefined) {
return (UndefinedID, 0);
}
if(!requests[requestIdentifier].isDecided) {
return (ReqNotDecided, 0);
}
require(requests[requestIdentifier].isDefined && requests[requestIdentifier].isDecided);
return (Successful, requests[requestIdentifier].decisionTime);
}
function getRequestDecision(uint requestIdentifier) public view returns (uint8 status, uint[] memory acceptedOfferIDs) {
if(!requests[requestIdentifier].isDefined) {
return (UndefinedID, new uint[](0));
}
if(!requests[requestIdentifier].isDecided) {
return (ReqNotDecided, new uint[](0));
}
require(requests[requestIdentifier].isDefined && requests[requestIdentifier].isDecided);
return (Successful, requests[requestIdentifier].acceptedOfferIDs);
}
function finishSubmitOfferExtra(uint offerID) internal returns (uint8 status, uint offID) {
emit FunctionStatus(Successful);
emit OfferExtraAdded(offerID);
return (Successful, offerID);
}
}