// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.19;

import { IUniswapV3Factory } from "@uniswap-v3-core/interfaces/IUniswapV3Factory.sol";
import { IUniswapV3Pool } from "@uniswap-v3-core/interfaces/IUniswapV3Pool.sol";
import { UniswapHelpers } from "../../src/helpers/UniswapHelpers.sol";

struct ShadowPool {
    IUniswapV3Factory factory;
    IUniswapV3Pool pool;
    address token0;
    address token1;
}

/**
 * @title ShadowPoolDeployer
 * @notice Deploys a fresh UniswapV3Factory and pool for backtesting.
 *         SHADOW_FEE = 10 000 (1%) matches the AERO/WETH pool on Base.
 */
library ShadowPoolDeployer {
    uint24 internal constant SHADOW_FEE = 10_000;

    /**
     * @notice Deploy a new UniswapV3 factory + pool and initialize it.
     * @param tokenA  One of the two mock tokens (any order).
     * @param tokenB  The other mock token.
     * @param sqrtPriceX96  Initial sqrt price (Q64.96).
     * @return sp  ShadowPool struct with factory, pool, token0, token1 addresses.
     */
    function deploy(
        address tokenA,
        address tokenB,
        uint160 sqrtPriceX96
    )
        internal
        returns (ShadowPool memory sp)
    {
        sp.factory = UniswapHelpers.deployUniswapFactory();

        address poolAddr = sp.factory.createPool(tokenA, tokenB, SHADOW_FEE);
        sp.pool = IUniswapV3Pool(poolAddr);

        sp.pool.initialize(sqrtPriceX96);

        // Resolve canonical token ordering from the pool.
        sp.token0 = sp.pool.token0();
        sp.token1 = sp.pool.token1();
    }
}