pragma solidity 0.8.20;

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

import {Gatekeeper} from "../../src/Gatekeeper.sol";

contract GatekeeperTest is Test {
    address constant ALICE       = 0x0000000000000000000000000000000000000001;
    address constant BOB         = 0x0000000000000000000000000000000000000002;
    uint256 constant EXISTENTIAL = 1337;
    uint256 constant INIT_AMOUNT = 69 * 1e18;
    Gatekeeper gatekeeper;

    event Ghosted(bytes32 indexed receiver, uint256 indexed amount);

    function setUp() public {
        vm.prank(ALICE, ALICE);
        gatekeeper = new Gatekeeper(EXISTENTIAL, address(0));
    }

    function test_correctInitialization() public {
        assertEq(gatekeeper.staking(), ALICE);
        assertEq(gatekeeper.ghostedSupply(), 0);

        bytes32 receiver = bytes32(abi.encodePacked(ALICE));
        vm.prank(ALICE);
        gatekeeper.ghost(receiver, INIT_AMOUNT);

        vm.prank(BOB);
        Gatekeeper anotherGatekeeper = new Gatekeeper(EXISTENTIAL, address(gatekeeper));
        assertEq(anotherGatekeeper.staking(), ALICE);
        assertEq(anotherGatekeeper.ghostedSupply(), INIT_AMOUNT);
        assertEq(anotherGatekeeper.existentialDeposit(), EXISTENTIAL);
    }

    function test_ghostTokensWork(uint256 ghostAmount) public {
        vm.assume(ghostAmount >= EXISTENTIAL && ghostAmount < type(uint96).max);
        bytes32 receiver = bytes32(abi.encodePacked(ALICE));
        uint256 ghostedSupply = gatekeeper.ghostedSupply();

        vm.prank(ALICE);
        gatekeeper.ghost(receiver, ghostAmount);
        assertEq(gatekeeper.ghostedSupply(), ghostedSupply + ghostAmount);
    }

    function test_couldNotGhostTokensFromArbitraryAddress(address someone) public {
        vm.assume(someone != ALICE);
        bytes32 receiver = bytes32(abi.encodePacked(ALICE));

        vm.expectRevert();
        vm.prank(someone);
        gatekeeper.ghost(receiver, 69);
        assertEq(gatekeeper.ghostedSupply(), 0);
    }

    function test_ghostTokensEmitsEvent(uint256 ghostAmount) public {
        vm.assume(ghostAmount >= EXISTENTIAL);
        bytes32 receiver = bytes32(abi.encodePacked(ALICE));

        vm.expectEmit(true, true, true, false, address(gatekeeper));
        emit Ghosted(receiver, ghostAmount);
        vm.prank(ALICE);
        gatekeeper.ghost(receiver, ghostAmount);
    }

    // TODO: revisit with actual signatures from the cargo test
    // function test_materializeWork(uint256 ghostAmount) public {
    //     vm.prank(ALICE);
    //     gatekeeper.materialize(0, ghostAmount, 0, ALICE);
    // }

    function test_rotateWork(bytes32 aggregatedPublicKey) public {
        vm.warp(block.timestamp + 1);
        vm.prank(address(gatekeeper));
        gatekeeper.rotate(block.timestamp, aggregatedPublicKey, 0);
    }

    function test_couldNotBridgeBelowExistential(uint256 amount) public {
        vm.assume(amount < EXISTENTIAL);
        bytes32 receiver = bytes32(abi.encodePacked(ALICE));

        vm.expectRevert();
        vm.prank(ALICE);
        gatekeeper.ghost(receiver, amount);

        assertEq(gatekeeper.ghostedSupply(), 0);
    }

    function test_signatureVerificationsWorks() public {
        assertEq(gatekeeper.deployer(), ALICE);
        vm.prank(ALICE);
        gatekeeper.updatePublicKeyMetadata(0, 0x875cdcba4ae5494518fa2602791e667ca0998402b6a69e5b7cb4c72dba4e4669, 0);

        (bytes32 prevPublicKey, uint8 prevParity, uint64 prevSession) = gatekeeper.latestPublicKeyInfo();

        gatekeeper.verify(
            hex"49f03a670000000000000000000000000000000000000000000000000000000000000000875cdcba4ae5494518fa2602791e667ca0998402b6a69e5b7cb4c72dba4e46690000000000000000000000000000000000000000000000000000000000000000",
            hex"044d9fa18df9da04381ed256981570a6ef6a0893496ded966fc994662df931ed423b29e2737394b31d8498594caad7b77e36ab31ac79df3796a1b6f26baa5552ae",
            0x24029a571fcaeadd14f4afe8be62afe3d07876ae270c3caf446ecb6cfc7c08f2
        );

        (bytes32 publicKey, uint8 parity, uint64 session) = gatekeeper.latestPublicKeyInfo();
        assertEq(publicKey, prevPublicKey);
        assertEq(parity, prevParity);
        assertEq(session, prevSession);

        vm.expectRevert();
        gatekeeper.verify(
            hex"49f03a6700000000000000000000000000000000000000000000000000000000000000023492bc8bb10848f1f788496ccadde7d458eac4ac2c1eca2dd2c7a506d8fa2c5b0000000000000000000000000000000000000000000000000000000000000000",
            hex"042b45a8909a137e7bab5caf4b2870ece0469c6a4149c10074cfdaf2c114a65daefe14179830c95d07fea439ce78d2ad11898578e5e678dbcb98a7576da9e57c77",
            0x5a61b59cededac4010b89bc6935e0cb7d975f5e2db457227ee473203de5247ed
        );

        gatekeeper.verify(
            hex"49f03a6700000000000000000000000000000000000000000000000000000000000000014e8c1fe96d6737cdabbcc96501d6656b9d0b659b3a528ef507f2d52bef29e1570000000000000000000000000000000000000000000000000000000000000000",
            hex"04d4c4daeb68bf8e40db4b516ddf3be9dd0f56a81809945e30bf06b7e5b26d1b27c83367de842f00c915f06ab1755dc511a3a3fe213308b5e65c6832d9d9bb3b38",
            0xd93d1b1613277ddb27df66bdea16d7b91adf975eb150e27a872ce035655ec13d
        );

        (publicKey, parity, session) = gatekeeper.latestPublicKeyInfo();
        assert(publicKey != prevPublicKey);
        assertEq(parity, prevParity);
        assertEq(session, prevSession + 1);

        prevPublicKey = publicKey;
        prevParity = parity;
        prevSession = session;

        gatekeeper.verify(
            hex"49f03a6700000000000000000000000000000000000000000000000000000000000000023492bc8bb10848f1f788496ccadde7d458eac4ac2c1eca2dd2c7a506d8fa2c5b0000000000000000000000000000000000000000000000000000000000000000",
            hex"042b45a8909a137e7bab5caf4b2870ece0469c6a4149c10074cfdaf2c114a65daefe14179830c95d07fea439ce78d2ad11898578e5e678dbcb98a7576da9e57c77",
            0x5a61b59cededac4010b89bc6935e0cb7d975f5e2db457227ee473203de5247ed
        );

        (publicKey, parity, session) = gatekeeper.latestPublicKeyInfo();
        assert(publicKey != prevPublicKey);
        assertEq(parity, prevParity);
        assertEq(session, prevSession + 1);

        vm.expectRevert();
        gatekeeper.verify(
            hex"49f03a670000000000000000000000000000000000000000000000000000000000000000875cdcba4ae5494518fa2602791e667ca0998402b6a69e5b7cb4c72dba4e46690000000000000000000000000000000000000000000000000000000000000000",
            hex"044d9fa18df9da04381ed256981570a6ef6a0893496ded966fc994662df931ed423b29e2737394b31d8498594caad7b77e36ab31ac79df3796a1b6f26baa5552ae",
            0x24029a571fcaeadd14f4afe8be62afe3d07876ae270c3caf446ecb6cfc7c08f2
        );

        vm.expectRevert();
        gatekeeper.verify(
            hex"49f03a6700000000000000000000000000000000000000000000000000000000000000014e8c1fe96d6737cdabbcc96501d6656b9d0b659b3a528ef507f2d52bef29e1570000000000000000000000000000000000000000000000000000000000000000",
            hex"04d4c4daeb68bf8e40db4b516ddf3be9dd0f56a81809945e30bf06b7e5b26d1b27c83367de842f00c915f06ab1755dc511a3a3fe213308b5e65c6832d9d9bb3b38",
            0xd93d1b1613277ddb27df66bdea16d7b91adf975eb150e27a872ce035655ec13d
        );

        vm.expectRevert();
        gatekeeper.verify(
            hex"49f03a6700000000000000000000000000000000000000000000000000000000000000023492bc8bb10848f1f788496ccadde7d458eac4ac2c1eca2dd2c7a506d8fa2c5b0000000000000000000000000000000000000000000000000000000000000000",
            hex"042b45a8909a137e7bab5caf4b2870ece0469c6a4149c10074cfdaf2c114a65daefe14179830c95d07fea439ce78d2ad11898578e5e678dbcb98a7576da9e57c77",
            0x5a61b59cededac4010b89bc6935e0cb7d975f5e2db457227ee473203de5247ed
        );
    }
}