_mintTicket

This internal function is responsible for minting tickets to a specified recipient for a given event and access level. It takes four parameters:

• _eventId: The unique identifier for the event associated with the ticket.

• _to: The address of the recipient to whom tickets are being minted.

• _tokenId: The token ID representing the ticket.

• _amount: The number of tickets to be minted.

```remix-solidity
/**
    MintTicket: Mint tickets to a specified recipient for a given event and access level.
    @param _tokenId: The token ID representing the ticket.
    @param _to: The address of the recipient to whom tickets are being minted.
    @param _eventId: The unique identifier for the event associated with the ticket.
    @param _amount: The number of tickets to be minted.

    Format: eventId, to, tokenId, amount
    */
    function _mintTicket(
        string calldata _eventId,
        address _to,
        uint256 _tokenId,
        uint256 _amount
    ) private {
        // Check if the caller is an event manager for the specific event
        if (checkIfCallerIsEventManager(_eventId, _msgSender())) {
            // Mint tickets directly if the caller is an event manager
            _mint(_to, _tokenId, _amount, "");
        } else {
            // Check if the access level requires whitelisting
            if (!getWhitelistBooleanFromTokenId(_tokenId)) {
                // Mint tickets directly if whitelisting is not required for the access level
                _mint(_to, _tokenId, _amount, "");
            } else {
                // Check if the caller has sufficient minting approval for the token ID
                if (getMintingApproval(_msgSender(), _tokenId) >= _amount) {
                    // Reduce the minting approval and mint tickets if approval is sufficient
                    s_tokenIdApprovals[_tokenId][_msgSender()] -= _amount;
                    _mint(_to, _tokenId, _amount, "");
                } else {
                    // Revert if the caller does not have enough minting approval access
                    revert DecastGating__UserDoesNotHaveEnoughMintingApprovalAccess();
                }
            }
        }
    }
```

Explanation:

In the function, there are conditional checks to ensure that ticket minting follows the necessary permissions and rules. Here's how the function operates:

1. Event Manager Check: The function first checks if the caller is an event manager for the specific event using the checkIfCallerIsEventManager function. If the caller is an event manager, they are allowed to mint tickets directly without any further checks.

2. Whitelisting Check: If the caller is not an event manager, the function checks if the access level associated with the ticket requires whitelisting. This is determined by the getWhitelistBooleanFromTokenId function.

3. Minting Approval Check: If whitelisting is required, the function checks if the caller has sufficient minting approval for the token ID using the getMintingApproval function. Minting approval signifies that the caller is allowed to mint a certain number of tickets.

4. Minting Process: If the caller meets the necessary conditions:

   • For event managers or access levels without whitelisting requirements, tickets are minted directly using the _mint(ERC1155 inBuilt) function.

   • If the access level requires whitelisting and the caller has sufficient minting approval, the minting approval is reduced by the ticket amount, and tickets are then minted.

5. Reverting Unauthorized Access: If the caller does not have sufficient minting approval for the token ID, the function reverts the transaction to prevent unauthorized minting.

Overall, this function ensures that ticket minting and setting tokenURI follows the established rules and permissions, providing security and control over the minting process.