contracts.go

/*
 * Flow Emulator
 *
 * Copyright Flow Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package emulator

import (
	"fmt"

	"github.com/onflow/flow-emulator/convert"

	flowsdk "github.com/onflow/flow-go-sdk"
	"github.com/onflow/flow-go-sdk/templates"
	flowgo "github.com/onflow/flow-go/model/flow"
	"github.com/onflow/flow-nft/lib/go/contracts"
)

func NewCommonContracts(chain flowgo.Chain) []ContractDescription {
	serviceAddress := flowsdk.HexToAddress(chain.ServiceAddress().HexWithPrefix())
	return []ContractDescription{
		{
			Name:        "ExampleNFT",
			Address:     serviceAddress,
			Description: "✨  Example NFT contract",
			Source:      contracts.ExampleNFT(serviceAddress, serviceAddress, serviceAddress),
		},
	}
}

var CommonContracts = NewCommonContracts(flowgo.Emulator.Chain())

type ContractDescription struct {
	Name        string
	Address     flowsdk.Address
	Description string
	Source      []byte
}

func DeployContracts(b *Blockchain, deployments []ContractDescription) error {
	for _, c := range deployments {
		err := deployContract(b, c.Name, c.Source)
		if err != nil {
			return err
		}
	}

	return nil
}

func deployContract(b *Blockchain, name string, contract []byte) error {
	serviceKey := b.ServiceKey()
	serviceAddress := serviceKey.Address

	if serviceKey.PrivateKey == nil {
		return fmt.Errorf("not able to deploy contracts without set private key")
	}

	latestBlock, err := b.GetLatestBlock()
	if err != nil {
		return err
	}

	tx := templates.AddAccountContract(serviceAddress, templates.Contract{
		Name:   name,
		Source: string(contract),
	})

	tx.SetComputeLimit(flowgo.DefaultMaxTransactionGasLimit).
		SetReferenceBlockID(flowsdk.Identifier(latestBlock.ID())).
		SetProposalKey(serviceAddress, serviceKey.Index, serviceKey.SequenceNumber).
		SetPayer(serviceAddress)

	signer, err := serviceKey.Signer()
	if err != nil {
		return err
	}

	err = tx.SignEnvelope(serviceAddress, serviceKey.Index, signer)
	if err != nil {
		return err
	}

	err = b.AddTransaction(*convert.SDKTransactionToFlow(*tx))
	if err != nil {
		return err
	}

	_, results, err := b.ExecuteAndCommitBlock()
	if err != nil {
		return err
	}

	lastResult := results[len(results)-1]
	if !lastResult.Succeeded() {
		return lastResult.Error
	}

	return nil
}