How to Mint ERC1155 with my own ERC20 token - ethereum

Question

I'm tryin to mint my ERC1155 nfts with my own ERC20 so i did the following :
1- created a variable of ERC20
ERC20 public FCG = FCG<br>
and in the constructor i pass the address of the ERC20 token contract
FCG = ERC20(0x0fC5025C764cE34df352757e82f7B5c4Df39A836);
2- in my mint function i did the following code
function mintCharacterPublic(address to, uint256 id, uint256 amount) public payable returns(bool){
require(to != address(0), "ERC1155: mint to the zero address");
require(FCG.approve(address(this), MINT_PRICE), "can't approve your token");
require(uint256(FCG.allowance(msg.sender, address(this))) >= MINT_PRICE, "Not enough of tokens");
FCG.transferFrom(msg.sender, address(this), MINT_PRICE);
mintCharacter(to, id, amount);
_balances[id][to] +=amount;
return true;
}
but when i try to mint it does not apply and it throws "Not enough of tokens"
so i think that the approve function does not function correctly.
here is my smart contract for the token
// SPDX-License-Identifier: MIT
import "#openzeppelin/contracts/token/ERC20/ERC20.sol";
import "#openzeppelin/contracts/access/Ownable.sol";
pragma solidity ^0.8.2;
contract Token {
mapping(address => uint) public balances;
mapping(address => mapping(address => uint)) public allowance;
uint public totalSupply = 1000000 * 10 ** 18;
string public name = "FightClub Token";
string public symbol = "FCT";
uint public decimals = 18;
event Transfer(address indexed from, address indexed to, uint value);
event Approval(address indexed owner, address indexed spender, uint value);
constructor() {
balances[msg.sender] = totalSupply;
}
function balanceOf(address owner) public view returns(uint) {
return balances[owner];
}
function transfer(address to, uint value) public returns(bool) {
require(balanceOf(msg.sender) >= value, 'balance too low');
balances[to] += value;
balances[msg.sender] -= value;
emit Transfer(msg.sender, to, value);
return true;
}
function transferFrom(address from, address to, uint value) public returns(bool) {
require(balanceOf(from) >= value, 'balance too low');
require(allowance[from][msg.sender] >= value, 'allowance too low');
balances[to] += value;
balances[from] -= value;
emit Transfer(from, to, value);
return true;
}
function approve(address spender, uint value) public returns (bool) {
allowance[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
}

Answer 1

This must be a two-step process:
The user authorizes your contract to spend the token.
The user calls mintCharacterPublic.
Your contract cannot grant itself permission to spend the originator's tokens. require(FCG.approve(address(this), MINT_PRICE), "can't approve your token"); means that the eip-721 contract sets its own approval to MINT_PRICE, not the end-user's.