package polycat

import (
	"context"
	"math/big"

	"git.lehouerou.net/laurent/evm"
	"git.lehouerou.net/laurent/evm/polycat/contracts"
	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/core/types"
	"github.com/pkg/errors"
	"github.com/shopspring/decimal"
)

const (
	MasterchefAddress = "0x8CFD1B9B7478E7B0422916B72d1DB6A9D513D734"
	DepositReferer    = "0"
)

type MasterchefService struct {
	client   evm.Client
	contract *contracts.Masterchef
}

func NewMasterchefService(c evm.Client) (*MasterchefService, error) {
	contract, err := contracts.NewMasterchef(common.HexToAddress(MasterchefAddress), c)
	if err != nil {
		return nil, errors.Wrap(err, "init contract")
	}
	return &MasterchefService{
		contract: contract,
		client:   c,
	}, nil
}

func (s *MasterchefService) Harvest(ctx context.Context, poolid int, opts ...evm.ExecutionOption) (evm.Transaction, error) {
	return s.client.Execute(ctx, func(ctx context.Context, options *evm.TransactOpts) (*types.Transaction, error) {
		return s.contract.Deposit(options.TransactOpts, big.NewInt(int64(poolid)), big.NewInt(0), common.HexToAddress(DepositReferer))
	}, opts...)
}

func (s *MasterchefService) Deposit(ctx context.Context, poolid int, amount decimal.Decimal, opts ...evm.ExecutionOption) (evm.Transaction, error) {
	return s.client.Execute(ctx, func(ctx context.Context, options *evm.TransactOpts) (*types.Transaction, error) {
		return s.contract.Deposit(options.TransactOpts, big.NewInt(int64(poolid)), amount.Shift(18).BigInt(), common.HexToAddress(DepositReferer))
	}, opts...)
}