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AskContract.sol
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AskContract.sol
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// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.4.16 <0.9.0;
// Example contract of a TestContract.
contract AskContract {
bool solved; // Boolean to denote if contract is solved.
address payable owner; // Owner of the contract, first this is the sponser.
uint expiry; // Get the time when the contract expires.
constructor() public payable { // Constructor to initialise values.
solved = false; // Boolean value to indicate if contract is already solved.
owner = msg.sender; // Set the owner of the contract to the creator of the contract.
expiry = 1612569800; // Unix timestamp of the moment of expiry.
}
function test(address payable hunter) public payable {
TemplateSolveContract solver = TemplateSolveContract(msg.sender); // The message sender is the contract activating the test function.
uint x = 100; // Sample input.
uint16 y = 10; // Sample expected output.
require(y == solver.main(x), "Wrong output"); // Require the output of the main function to be y.
solved = true; // Set solved to true.
owner = hunter; // Set the ownership to the hunter.
owner.transfer(address(this).balance); // Transfer the bounty to the hunter.
}
// Getter function for the solved variable.
function getSolved() public view returns (bool){
return solved;
}
// Getter function for the Ownership.
function getOwner() public view returns (address) {
return owner;
}
// Getter function for the balance of the contract.
function getBalance() public view returns (uint) {
return address(this).balance;
}
// Refund method to claim the value of the contract after expiry.
function refund() public {
require(msg.sender == owner && block.timestamp >= expiry, "Contract is not expired yet"); // The sender must own the contract and the contract must be expired.
selfdestruct(owner); // Let the contract selfdestruct and move the value to the owner.
}
}
// TemplateSolveContract so the TestContract knows the structure of the SolveContract.
contract TemplateSolveContract {
function main(uint x) public returns (uint);
}