export const routerTemplate = `//SPDX-License-Identifier: Unlicense
pragma solidity ^0.8.0;

// --------------------------------------------------------------------------------
// --------------------------------------------------------------------------------
// GENERATED CODE - do not edit manually!!
// --------------------------------------------------------------------------------
// --------------------------------------------------------------------------------

contract {{{moduleName}}} {
    error UnknownSelector(bytes4 sel);

    {{{modules}}}
{{#receive}}    {{{receive}}}{{/receive}}
{{^receive}}{{/receive}}
    fallback() external payable {
        // Lookup table: Function selector => implementation contract
        bytes4 sig4 = msg.sig;
        address implementation;

        assembly {
            let sig32 := shr(224, sig4)

            function findImplementation(sig) -> result {
                {{{selectors}}}
            }

            implementation := findImplementation(sig32)
        }

        if (implementation == address(0)) {
            revert UnknownSelector(sig4);
        }

        // Delegatecall to the implementation contract
        assembly {
            calldatacopy(0, 0, calldatasize())

            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)
            returndatacopy(0, 0, returndatasize())

            switch result
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return(0, returndatasize())
            }
        }
    }
}
`;