Creating a small solana smart contract

We need a Solana smart contract (program) that enables atomic token swaps between SOL (Solana's native cryptocurrency) and a specified mint (token) in both directions: SOL to token and token to SOL. The contract must be callable only with a auth code and will receive swap parameters (amount, slippage, and fees) from the bot. The contract should integrate with an existing decentralized exchange (DEX) on Solana, such as Raydium or Jupiter, to execute the swaps.