// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

import "forge-std/Test.sol";
import "../../src/PolicyManager.sol";
import "../../src/ComplianceRegistry.sol";
import "../../src/DebtRegistry.sol";
import "../../src/libraries/ReasonCodes.sol";

contract PolicyManagerTest is Test {
    PolicyManager public policyManager;
    ComplianceRegistry public complianceRegistry;
    DebtRegistry public debtRegistry;
    address public admin;
    address public policyOperator;
    address public token;
    address public user1;
    address public user2;
    address public bridge;

    function setUp() public {
        admin = address(0x1);
        policyOperator = address(0x2);
        token = address(0x100);
        user1 = address(0x10);
        user2 = address(0x20);
        bridge = address(0xB0);

        complianceRegistry = new ComplianceRegistry(admin);
        debtRegistry = new DebtRegistry(admin);

        policyManager = new PolicyManager(admin, address(complianceRegistry), address(debtRegistry));

        // Set up compliant users
        vm.startPrank(admin);
        policyManager.grantRole(policyManager.POLICY_OPERATOR_ROLE(), policyOperator);
        complianceRegistry.grantRole(complianceRegistry.COMPLIANCE_ROLE(), admin);
        complianceRegistry.setCompliance(user1, true, 1, bytes32(0));
        complianceRegistry.setCompliance(user2, true, 1, bytes32(0));
        complianceRegistry.setCompliance(bridge, true, 1, bytes32(0));
        vm.stopPrank();
    }

    function test_canTransfer_paused() public {
        vm.prank(policyOperator);
        policyManager.setPaused(token, true);

        (bool allowed, bytes32 reason) = policyManager.canTransfer(token, user1, user2, 100);
        assertFalse(allowed);
        assertEq(reason, ReasonCodes.PAUSED);
    }

    function test_canTransfer_tokenFrozen() public {
        vm.prank(policyOperator);
        policyManager.freeze(token, user1, true);

        (bool allowed, bytes32 reason) = policyManager.canTransfer(token, user1, user2, 100);
        assertFalse(allowed);
        assertEq(reason, ReasonCodes.FROM_FROZEN);
    }

    function test_canTransfer_complianceFrozen() public {
        vm.prank(admin);
        complianceRegistry.setFrozen(user1, true);

        (bool allowed, bytes32 reason) = policyManager.canTransfer(token, user1, user2, 100);
        assertFalse(allowed);
        assertEq(reason, ReasonCodes.FROM_FROZEN);
    }

    function test_canTransfer_notCompliant() public {
        address nonCompliant = address(0x99);

        (bool allowed, bytes32 reason) = policyManager.canTransfer(token, nonCompliant, user2, 100);
        assertFalse(allowed);
        assertEq(reason, ReasonCodes.FROM_NOT_COMPLIANT);
    }

    function test_canTransfer_bridgeOnly() public {
        vm.startPrank(policyOperator);
        policyManager.setBridgeOnly(token, true);
        policyManager.setBridge(token, bridge);
        vm.stopPrank();

        // Non-bridge transfer should fail
        (bool allowed, bytes32 reason) = policyManager.canTransfer(token, user1, user2, 100);
        assertFalse(allowed);
        assertEq(reason, ReasonCodes.BRIDGE_ONLY);

        // Bridge transfer should succeed
        (allowed, reason) = policyManager.canTransfer(token, user1, bridge, 100);
        assertTrue(allowed);
        assertEq(reason, ReasonCodes.OK);

        (allowed, reason) = policyManager.canTransfer(token, bridge, user2, 100);
        assertTrue(allowed);
        assertEq(reason, ReasonCodes.OK);
    }

    function test_canTransfer_ok() public {
        (bool allowed, bytes32 reason) = policyManager.canTransfer(token, user1, user2, 100);
        assertTrue(allowed);
        assertEq(reason, ReasonCodes.OK);
    }

    function test_setLienMode() public {
        vm.prank(policyOperator);
        policyManager.setLienMode(token, 1);

        assertEq(policyManager.lienMode(token), 1);

        vm.prank(policyOperator);
        policyManager.setLienMode(token, 2);

        assertEq(policyManager.lienMode(token), 2);
    }

    function test_setLienMode_invalid() public {
        vm.prank(policyOperator);
        vm.expectRevert("PolicyManager: invalid lien mode");
        policyManager.setLienMode(token, 3);
    }

    function test_setBridge() public {
        vm.prank(policyOperator);
        policyManager.setBridge(token, bridge);

        assertEq(policyManager.bridge(token), bridge);
    }
}