Add selection of fundraising mint

makarychev commented 4 months ago

fundraising mint can be different from USDC
other fundraising mints must be approved by donation proto authority in advance

rate calculation is supported by specific DEX (raydium or jupiter etc.):

//calculation formula: https://spl.solana.com/token-swap#constant-product
// raydium AMM formula:
let swap_amount_out = Calculator::swap_token_amount_base_in(
 swap_in_after_deduct_fee,
 total_pc_without_take_pnl.into(),
 total_coin_without_take_pnl.into(),
 swap_direction,
).as_u64();
// refernce calculate rate in https://github.com/openbook-dex/program/blob/master/dex/src/state.rs#L2975

makarychev commented 4 months ago

https://github.com/raydium-io/raydium-clmm/blob/2eb458dfd634bb28521e25a81da3e93fa8926644/programs/amm/src/states/pool.rs#L85

/// The current price of the pool as a sqrt(token_1/token_0) Q64.64 value
    pub sqrt_price_x64: u128,

makarychev commented 4 months ago

https://github.com/raydium-io/raydium-cpi-example/blob/master/clmm-cpi/programs/clmm-cpi/src/instructions/proxy_swap.rs#L24


use raydium_amm_v3::{
    cpi,
    program::AmmV3,
    states::{AmmConfig, ObservationState, PoolState},
};

    /// The program account of the pool in which the swap will be performed
    #[account(mut)]
    pub pool_state: AccountLoader<'info, PoolState>,

makarychev commented 3 months ago

Resolved in PR https://github.com/donaty-io/donaproto/pull/12

donaty-io / donaproto

Add selection of fundraising mint #10