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contracts...1_ModStore.sol

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.7.0 <0.9.0;

/** 
 * @title Ballot
 * @dev Implements voting process along with vote delegation
 *
 * uhg, it won't return false if user is a mod or not
 * it also lets you add duplicate mods
 * can't use mappings bc i want to iterate over the list of mods
 * risk of flodding the array with so many mods the contract fails to update
 *
 *
 *
 */
contract Modstore {

    address private owner;
    string[] public lastModList;
    string[] public currentModList;

    
    // event for EVM logging
    event OwnerSet(address indexed oldOwner, address indexed newOwner);
    
    // modifier to check if caller is owner
    modifier isOwner() {
        require(msg.sender == owner, "Bitch, you have no power here....");
        _;
    }
    
    /**
     * @dev Set contract deployer as owner
     */
    constructor() {
        owner = msg.sender; // we need to deploy this as the dao agent
        emit OwnerSet(address(0), owner);
    }

    function isUserAMod(string memory username) public view returns (bool out) {
        
        out = false;
        for (uint j = 0; j <= currentModList.length; j++) {  //for loop example
            if (stringsAreEqual(currentModList[j], username)){
                out = true;
            }    
        }
        return out;
    }

    function findModId(string memory username) public view returns (int) {
        for (uint j = 0; j <= currentModList.length; j++) {  //for loop example
            if (stringsAreEqual(currentModList[j], username)){
                return int(j);
            }     
        }
        return -1;
    }

    function stringsAreEqual(string memory a, string memory b) public pure returns (bool) {
        return keccak256(abi.encodePacked(a)) == keccak256(abi.encodePacked(b));
    }

    function addMod(string calldata new_mod) public isOwner returns (int) {
        // require(!isUserAMod(new_mod),"User is already a mod, cannot add.");
        lastModList = currentModList;
        currentModList.push(new_mod);
        return findModId(new_mod);
    }

    function removeMod(string memory new_mod) public isOwner {
        int modId = findModId(new_mod); 
        require(modId != -1,"User is not a mod, cannot remove.");
        lastModList = currentModList;
        delete currentModList[uint(modId)];
    }

    function getMods() public view returns (string[] memory) {
        return currentModList;
    }

    function getPreviousMods() public view returns (string[] memory) {
        return lastModList;
    }

}