wallet lock and unlock in solidity - solidity

Question

i want create a simple smartcontract, where initial supply is 1000 & 1000 to a specific wallet.now i want the supply of wallet(1000) to lock for a year and every month 5% of that supply should be added to initial supply.
so far i develop
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;
contract Timer{
uint256 public intialSuply= 1000;
address public wallet= 0x5B38Da6a701c568545dCfcB03FcB875f56beddC4;
address public owner;
mapping (address=>uint) public balances;
constructor(){
owner=msg.sender;
balances[wallet]=1000;
}
modifier onlyOwner(){
require(owner==msg.sender);
_;
}
function locker()public {
}
}

Answer 1

Your post explanation and the code example you've provided is very unclear. I assume you're not using the standards of ERC-20 and only need to keep track of a single parameter of initialSupply.
Check this out :
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;
contract Timer{
/*
#param initialSupply : adding 18 decimals to avoid fraction
*/
uint256 public initialSupply = 1000 * (10 ** 18);
uint256 public ts_end;
address public wallet = 0x5B38Da6a701c568545dCfcB03FcB875f56beddC4;
address public owner;
bool public claimed;
mapping (address => uint256) public balances;
modifier onlyOwner() {
require(owner == msg.sender);
_;
}
constructor() {
owner = msg.sender;
balances[wallet] = initialSupply;
/* Assuming a year with 365-days , i.e no leep year */
ts_end = block.timestamp + (86400 * 30 * 12);
}
function claim() public onlyOwner {
require(ts_end > block.timestamp,"Can not claim yet");
require(claimed = false,"Already claimed");
claimed = true;
for(uint i = 0 ; i < 12 ; i++) {
initialSupply += (initialSupply * 15) / 100;
}
balances[wallet] = initialSupply;
}
function balanceOf() external view returns(uint256) {
return balances[msg.sender];
}
}