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use schemars::JsonSchema;
use serde::{Deserialize, Serialize};

use crate::{Asset, AssetInfo, InitHook};
use cosmwasm_std::{Decimal, HumanAddr, Uint128};

#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
#[serde(rename_all = "snake_case")]
pub enum FactoryHandleMsg {
    /// CreatePair instantiates pair contract
    CreatePair {
        /// Asset infos
        asset_infos: [AssetInfo; 2],
        /// Init hook for after works
        init_hook: Option<InitHook>,
    },
}

#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
#[serde(rename_all = "snake_case")]
pub enum PairHandleMsg {
    /// ProvideLiquidity a user provides pool liquidity
    ProvideLiquidity {
        assets: [Asset; 2],
        slippage_tolerance: Option<Decimal>,
    },
    /// Swap an offer asset to the other
    Swap {
        offer_asset: Asset,
        belief_price: Option<Decimal>,
        max_spread: Option<Decimal>,
        to: Option<HumanAddr>,
    },
}

#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
#[serde(rename_all = "snake_case")]
pub enum PairCw20HookMsg {
    /// Sell a given amount of asset
    Swap {
        belief_price: Option<Decimal>,
        max_spread: Option<Decimal>,
        to: Option<HumanAddr>,
    },
    WithdrawLiquidity {},
}

#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
#[serde(rename_all = "snake_case")]
pub enum FactoryQueryMsg {
    Pair { asset_infos: [AssetInfo; 2] },
}

#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
#[serde(rename_all = "snake_case")]
pub enum PairQueryMsg {
    Simulation { offer_asset: Asset },
    ReverseSimulation { ask_asset: Asset },
}

/// SimulationResponse returns swap simulation response
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
pub struct SimulationResponse {
    pub return_amount: Uint128,
    pub spread_amount: Uint128,
    pub commission_amount: Uint128,
}

/// ReverseSimulationResponse returns reverse swap simulation response
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
pub struct ReverseSimulationResponse {
    pub offer_amount: Uint128,
    pub spread_amount: Uint128,
    pub commission_amount: Uint128,
}