Generate New Diamond Factory Package

Generate a complete Diamond Factory Package for deploying Diamond proxy instances.

Arguments

The user provides a feature name (e.g., MyFeature).

Execution Steps

1. Locate related facets:

   • Search for {FeatureName}Facet.sol and related facets
   • Identify what facets should be bundled in this package

2. Determine output directory:

   • Place next to the facet files
   • Or in a dedicated packages/ subdirectory

3. Generate the following files:

Interface (I{FeatureName}DFPkg.sol)

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.30;

interface I{FeatureName}DFPkg {
    /// @notice Constructor arguments for the package
    /// @dev Contains immutable facet references
    struct PkgInit {
        IFacet {featureName}Facet;
        // Add other facets as needed
    }

    /// @notice Deployment arguments for each instance
    /// @dev Passed to initAccount() during deployment
    struct PkgArgs {
        // Add per-instance configuration
        // e.g., string name;
        // e.g., address owner;
    }
}

Package ({FeatureName}DFPkg.sol)

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.30;

import {IDiamond} from "@crane/contracts/introspection/ERC2535/interfaces/IDiamond.sol";
import {IDiamondFactoryPackage} from "@crane/contracts/interfaces/IDiamondFactoryPackage.sol";
import {IFacet} from "@crane/contracts/interfaces/IFacet.sol";
import {I{FeatureName}DFPkg} from "./interfaces/I{FeatureName}DFPkg.sol";
import {{FeatureName}Repo} from "./{FeatureName}Repo.sol";

contract {FeatureName}DFPkg is I{FeatureName}DFPkg, IDiamondFactoryPackage {
    IFacet immutable {FEATURE_NAME}_FACET;

    constructor(PkgInit memory pkgInit_) {
        {FEATURE_NAME}_FACET = pkgInit_.{featureName}Facet;
    }

    function packageName() public pure returns (string memory) {
        return type({FeatureName}DFPkg).name;
    }

    function facetCuts() public view returns (IDiamond.FacetCut[] memory cuts_) {
        cuts_ = new IDiamond.FacetCut[](1);
        cuts_[0] = IDiamond.FacetCut({
            facetAddress: address({FEATURE_NAME}_FACET),
            action: IDiamond.FacetCutAction.Add,
            functionSelectors: {FEATURE_NAME}_FACET.facetFuncs()
        });
    }

    function diamondConfig() public view returns (DiamondConfig memory) {
        // Return diamond configuration
    }

    function calcSalt(bytes memory pkgArgs_) public pure returns (bytes32) {
        PkgArgs memory args = abi.decode(pkgArgs_, (PkgArgs));
        // Return deterministic salt based on args
        // e.g., return keccak256(abi.encode(args.name));
    }

    function initAccount(bytes memory initArgs_) public {
        PkgArgs memory args = abi.decode(initArgs_, (PkgArgs));
        // Initialize storage via Repo
        // {FeatureName}Repo._initialize(...);
    }

    function postDeploy(address) public returns (bool) {
        return true;
    }
}

4. File placement:

   contracts/{feature-path}/
   ├── interfaces/
   │   └── I{FeatureName}DFPkg.sol
   └── {FeatureName}DFPkg.sol
   

5. Add deploy helper (optional):

// In {FeatureName}DFPkg.sol

function deploy(
    IDiamondPackageCallBackFactory factory_,
    // Add PkgArgs fields as parameters
    bytes32 salt_
) external returns (I{FeatureName}) {
    return I{FeatureName}(
        factory_.deploy(
            IDiamondFactoryPackage(address(this)),
            abi.encode(PkgArgs({
                // Map parameters to struct
            })),
            salt_
        )
    );
}

Output

Inform the user:

• Files created and their locations
• How to deploy: show FactoryService pattern
• Next steps: add facets to PkgInit, add config to PkgArgs
• Reference the crane-deployment skill for deployment patterns