Hi devs. I'm just starting my web3 dev journey with TON. I've used Telegram for a long time but never really looked at TON. I'm a fullstack but i've written smart contracts only with solidity this will be my first time using func. My idea is to have a smart contract handling this process: someone sends TON to my wallet and in exchange receives another TON based token. The amount is calucated with a use of a specific algorithm. Is there any example that implements something like this in the docs that i can learn from? Thanks a lot. And one more question is there an example that shows how to connect the ton space beta wallet using ton connect in a telegram web app?