// SPDX-License-Identifier: MIT
pragma solidity 0.8.35;

import {Test} from "forge-std/Test.sol";

import {BankV1} from "../../src/BankV1.sol";
import {MockUSDC} from "../../src/MockUSDC.sol";

contract BankHandler is Test {
    MockUSDC internal immutable token;
    BankV1 internal immutable bank;

    address internal immutable actor0;
    address internal immutable actor1;
    address internal immutable actor2;
    address internal immutable actor3;

    uint256 public ghostDeposited;
    uint256 public ghostWithdrawn;
    uint256 public ghostDonated;

    constructor(MockUSDC token_, BankV1 bank_) {
        token = token_;
        bank = bank_;
        actor0 = address(0x1001);
        actor1 = address(0x1002);
        actor2 = address(0x1003);
        actor3 = address(0x1004);
    }

    function deposit(uint256 actorSeed, uint256 amount) external {
        address actor = actorAt(actorSeed % actorCount());
        amount = bound(amount, 1, 10_000e6);
        token.mint(actor, amount);

        vm.startPrank(actor);
        token.approve(address(bank), amount);
        bank.deposit(amount);
        vm.stopPrank();

        ghostDeposited += amount;
    }

    function withdraw(uint256 actorSeed, uint256 amount) external {
        address actor = actorAt(actorSeed % actorCount());
        uint256 balance = bank.balanceOf(actor);
        if (balance == 0) return;

        amount = bound(amount, 1, balance);
        vm.startPrank(actor);
        bank.withdraw(amount);
        vm.stopPrank();

        ghostWithdrawn += amount;
    }

    function donate(uint256 actorSeed, uint256 amount) external {
        address actor = actorAt(actorSeed % actorCount());
        amount = bound(amount, 1, 1_000e6);
        token.mint(actor, amount);

        vm.startPrank(actor);
        token.transfer(address(bank), amount);
        vm.stopPrank();

        ghostDonated += amount;
    }

    function actorCount() public pure returns (uint256) {
        return 4;
    }

    function actorAt(uint256 index) public view returns (address) {
        if (index == 0) return actor0;
        if (index == 1) return actor1;
        if (index == 2) return actor2;
        return actor3;
    }
}