Resources

// LP-realated resource
struct LiquidityPool<phantom X, phantom Y> has key, store {
    id: UID,
    coin_x_reserve: Balance<X>,
    coin_y_reserve: Balance<Y>,
    lp_coin_reserve: Balance<LPCoin<X, Y>>,
    lp_supply: Supply<LPCoin<X, Y>>,
    last_block_timestamp: u64,
    last_price_x_cumulative: u128,
    last_price_y_cumulative: u128,
    k_last: u128,
    locked: bool,
}

// Global config resource
struct AdminData has store, copy, drop {
    dao_fee_to: address,
    admin_address: address,
    dao_fee: u64,           // 1/(dao_fee+1) comes to dao_fee_to if dao_fee_on
    swap_fee: u64,          // BP, swap_fee * 1/10000
    dao_fee_on: bool,       // default: true
    is_pause: bool,         // pause swap
}

struct PairMeta has drop, store, copy {
    coin_x: String,
    coin_y: String,
}

struct PairInfo has store, copy, drop {
    pair_list: vector<PairMeta>,
}

LiquidityPool

struct LiquidityPool<phantom X, phantom Y> has key, store {
    id: UID,
    coin_x_reserve: Balance<X>,
    coin_y_reserve: Balance<Y>,
    lp_coin_reserve: Balance<LPCoin<X, Y>>,
    lp_supply: Supply<LPCoin<X, Y>>,
    last_block_timestamp: u64,
    last_price_x_cumulative: u128,
    last_price_y_cumulative: u128,
    k_last: u128,
    locked: bool,
}

• Contains info for lp

AdminData

struct AdminData has store, copy, drop {
    dao_fee_to: address,
    admin_address: address,
    dao_fee: u64,           // 1/(dao_fee+1) comes to dao_fee_to if dao_fee_on
    swap_fee: u64,          // BP, swap_fee * 1/10000
    dao_fee_on: bool,       // default: true
    is_pause: bool,         // pause swap
}

• Contains global swap config
• Currently swap_fee = 30, means 0.3% swap fee
• Currently dao_fee = 5, means 1/6 (0.05%) swap fee for dao, and 5/6 (0.25%) for AMM

PairInfo

struct PairInfo has store, copy, drop {
    pair_list: vector<PairMeta>,
}

• Contains all pairs list