حسابات Stable AMM

// raydium-stable/program/src/state.rs (abridged)
pub struct AmmInfo {
    pub account_type: u64,              // = 0 (AmmAccount)
    pub status: u64,                    // bitmask: swap/deposit/withdraw/crank enabled
    pub nonce: u64,                     // bump for amm_authority
    pub order_num: u64,
    pub depth: u64,
    pub coin_decimals: u64,
    pub pc_decimals: u64,
    pub state: u64,                     // state machine (IdleState, etc.)
    pub reset_flag: u64,
    pub min_size: u64,
    pub vol_max_cut_ratio: u64,
    pub amount_wave: u64,
    pub coin_lot_size: u64,             // mirrors OpenBook
    pub pc_lot_size: u64,
    pub min_price_multiplier: u64,
    pub max_price_multiplier: u64,
    pub sys_decimal_value: u64,
    pub abort_trade_factor: u64,
    pub price_tick_multiplier: u64,
    pub price_tick: u64,
    
    pub fees: Fees,                     // see below
    pub out_put: OutPutData,            // PnL, swaps, punish amounts
    
    pub coin_vault: Pubkey,
    pub pc_vault: Pubkey,
    pub coin_mint: Pubkey,
    pub pc_mint: Pubkey,
    pub lp_mint: Pubkey,
    pub model_data_key: Pubkey,         // ← THE LOOKUP TABLE
    pub open_orders: Pubkey,            // OpenBook OpenOrders
    pub serum_market: Pubkey,
    pub serum_program: Pubkey,
    pub target_orders: Pubkey,
    pub amm_admin: Pubkey,              // admin key
    pub client_order_id: u64,
    pub lp_amount: u64,                 // LP supply
    pub lp_net: u64,                    // LP value metric
    pub padding: [u64; 61],
}

pub struct Fees {
    pub min_separate_numerator: u64,
    pub min_separate_denominator: u64,
    pub trade_fee_numerator: u64,       // 25
    pub trade_fee_denominator: u64,     // 10_000 → 0.25%
    pub pnl_numerator: u64,             // 12
    pub pnl_denominator: u64,           // 100 → 12% of fee = 0.03% of volume
    pub swap_fee_numerator: u64,        // 25
    pub swap_fee_denominator: u64,      // 10_000
}

pub struct OutPutData {
    pub need_take_pnl_coin: u64,        // accrued protocol fee (coin)
    pub need_take_pnl_pc: u64,          // accrued protocol fee (pc)
    pub total_pnl_pc: u64,
    pub total_pnl_coin: u64,
    pub pool_open_time: u64,
    pub punish_pc_amount: u64,
    pub punish_coin_amount: u64,
    pub orderbook_to_init_time: u64,
    pub swap_coin_in_amount: u128,
    pub swap_pc_out_amount: u128,
    pub swap_pc_in_amount: u128,
    pub swap_coin_out_amount: u128,
    pub swap_pc_fee: u64,
    pub swap_coin_fee: u64,
}

// raydium-stable/program/src/state.rs
pub const ELEMENT_SIZE: usize = 50000;

pub struct DataElement {
    pub x: u64,         // table X (e.g., coin amount)
    pub y: u64,         // table Y (e.g., pc amount)
    pub price: u64,     // price at (x, y)
}

pub struct ModelDataInfo {
    pub account_type: u64,              // = 2 (ModleDataAccount)
    pub status: u64,                    // Initialized or Uninitialized
    pub multiplier: u64,                // scale factor for x, y (e.g., 10^6)
    pub valid_data_count: u64,          // how many elements are populated
    pub elements: [DataElement; 50000], // the table itself
}

pub struct DataElement {
    pub x: u64,         // X coordinate (e.g., token_a balance, scaled by multiplier)
    pub y: u64,         // Y coordinate (e.g., token_b balance, scaled by multiplier)
    pub price: u64,     // price (x/y in scaled form, scaled by multiplier)
}

ammId = createWithSeed(
  owner: ammAuthority,
  seed: marketPubkey.toBase58().slice(0, 32),
  programId: STABLE_PROGRAM_ID,
)