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"
)

type TankChefService struct {
	client   evm.Client
	contract *contracts.TankChef
}

func NewTankChefService(c evm.Client, address string) (*TankChefService, error) {
	contract, err := contracts.NewTankChef(common.HexToAddress(address), c)
	if err != nil {
		return nil, errors.Wrap(err, "init contract")
	}
	return &TankChefService{
		contract: contract,
		client:   c,
	}, nil
}

func (s *TankChefService) Harvest(ctx context.Context, opts ...evm.ExecutionOption) (evm.Transaction, error) {
	return s.client.Execute(ctx, func(ctx context.Context, options *evm.TransactOpts) (*types.Transaction, error) {
		return s.contract.Withdraw(options.TransactOpts, big.NewInt(0))
	}, opts...)
}

func (s *TankChefService) Deposit(ctx context.Context, 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, amount.Shift(18).BigInt())
	}, opts...)
}