// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

contract EventDAO {

struct Event {

uint256 timestamp;

string description;

int256 KS_value;

uint256[3] priorEventIds;

}

Event[] public events;

Event[3] public initialEvents;

function calculateKS(

int256 priorEvent1KSValue,

int256 priorEvent2KSValue,

int256 priorEvent3KSValue

) pure internal returns (int256) {

int256 newKSValue = -priorEvent1KSValue - priorEvent2KSValue - priorEvent3KSValue;

return newKSValue;

}

function addNewEvent(

uint256 timestamp,

string memory description,

uint256[3] memory priorEventIds,

int256 claimedKSValue

) public {

int256 calculatedKSValue = calculateKS(

events[priorEventIds[0]].KS_value,

events[priorEventIds[1]].KS_value,

events[priorEventIds[2]].KS_value

);

require(claimedKSValue == calculatedKSValue, "Invalid KS Value");

events.push(

Event({

timestamp: timestamp,

description: description,

KS_value: calculatedKSValue,

priorEventIds: priorEventIds

})

);

}

}