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// Copyright 2021-2022 Zenlink.
// Licensed under Apache 2.0.

//! Runtime API definition for stable amm.

#![cfg_attr(not(feature = "std"), no_std)]
// The `too_many_arguments` warning originates from `decl_runtime_apis` macro.
#![allow(clippy::too_many_arguments)]
// The `unnecessary_mut_passed` warning originates from `decl_runtime_apis` macro.
#![allow(clippy::unnecessary_mut_passed)]
use codec::Codec;
use sp_std::vec::Vec;

sp_api::decl_runtime_apis! {
    pub trait DexStableApi<CurrencyId, Balance, AccountId, PoolId> where
        Balance: Codec,
        CurrencyId: Codec,
        AccountId: Codec,
        PoolId: Codec,
    {
        fn get_virtual_price(pool_id: PoolId) -> Balance;

        fn get_a(pool_id: PoolId) -> Balance;

        fn get_a_precise(pool_id: PoolId) -> Balance;

        fn get_currencies(pool_id: PoolId) -> Vec<CurrencyId>;

        fn get_currency(pool_id: PoolId, index: u32) -> Option<CurrencyId>;

        fn get_lp_currency(pool_id: PoolId) -> Option<CurrencyId>;

        fn get_currency_precision_multipliers(pool_id: PoolId) -> Vec<Balance>;

        fn get_currency_balances(pool_id: PoolId) -> Vec<Balance>;

        fn get_number_of_currencies(pool_id: PoolId) -> u32;

        fn get_admin_balances(pool_id: PoolId) -> Vec<Balance>;

        fn calculate_currency_amount(pool_id: PoolId, amounts:Vec<Balance>, deposit: bool) -> Balance;

        fn calculate_swap(pool_id: PoolId, in_index: u32, out_index: u32, in_amount: Balance) -> Balance;

        fn calculate_remove_liquidity(pool_id: PoolId, amount: Balance) -> Vec<Balance>;

        fn calculate_remove_liquidity_one_currency(pool_id: PoolId, amount:Balance, index: u32) -> Balance;
    }
}