Help with minting upgradable ERC20 token

[Skyge]

Hi, welcome!

@richastral

Question 1: I am about to write some vesting code to allocate a certain amount of tokens to the developer and also to some pre-sales. How do I go about this? Do I allocate this out of the pre-minted tokens or do I mint more?

I think you can transfer tokens to developers directly, if there are not too many accounts. Or you can create an airdrop contract, just like Uniswap distribute UNI, this needs developers to claim by themselves.

And pre-sale? Do you mean the Crowdsale contract? If so, I think you can have a look at this documentation: https://docs.openzeppelin.com/contracts/2.x/crowdsales

@richastral

Question 2: If I want future offerings, would I need to do an upgrade, e.g. create another contract? Not sure how this works.

If your original contract does have your new feature function, I think you have got to upgrade your contract, maybe you can have a look at this tutorial: OpenZeppelin Upgrades: Step by Step Tutorial for Hardhat

@richastral

Question 3: How does an exchange buy and sell the tokens? E.g. I understand the owner can call the transfer function, but requires owner privileges, how is this done?, or is there a way to have a ‘public’ pool of some sort?

I think you mean the decentralized exchange, such as Uniswap, anyway, for any kind of exchange, there should be a exchange rate or just the price to swap token. For more details about Uniswap, you can have a look at this article: https://pintail.medium.com/uniswap-a-good-deal-for-liquidity-providers-104c0b6816f2

And for decentralized exchange, users call token.aprove and then exchange can call transferFrom to get token from user to swap.

@richastral

Question 4: How do I (if it is at all possible) set the initial price of the token? and how does this increase and decrease?

Have a look at the article I shared above.