package beefy

import (
	"context"

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

type VaultV6 struct {
	evm.Token
	client   evm.Client
	contract *contracts.VaultV6

	Underlying evm.Token
}

func NewVaultV6(client evm.Client, address common.Address) (*VaultV6, error) {
	contract, err := contracts.NewVaultV6(address, client)
	if err != nil {
		return nil, errors.Wrap(err, "init vault contract")
	}
	token, err := client.TokenService().TokenByAddress(address)
	if err != nil {
		return nil, errors.Wrap(err, "init token contract")
	}
	wantaddress, err := contract.Want(&bind.CallOpts{})
	if err != nil {
		return nil, errors.Wrap(err, "getting underlying token address")
	}
	want, err := client.TokenService().TokenByAddress(wantaddress)
	if err != nil {
		return nil, errors.Wrap(err, "init underlying token contract")
	}

	return &VaultV6{
		client:     client,
		contract:   contract,
		Token:      token,
		Underlying: want,
	}, nil
}

func (v *VaultV6) PricePerFullShare() (decimal.Decimal, error) {
	ppfs, err := v.contract.GetPricePerFullShare(&bind.CallOpts{})
	if err != nil {
		return decimal.Zero, errors.Wrap(err, "calling contract")
	}
	return v.ValueFromBigInt(ppfs), nil
}

func (v *VaultV6) Deposit(ctx context.Context, amount decimal.Decimal, opts ...evm.ExecutionOption) (evm.Transaction, error) {
	return v.client.Execute(ctx, func(ctx context.Context, opts *evm.TransactOpts) (*types.Transaction, error) {
		return v.contract.Deposit(opts.TransactOpts, v.Underlying.ValueToBigInt(amount))
	}, opts...)
}

func (v *VaultV6) Withdraw(ctx context.Context, amount decimal.Decimal, opts ...evm.ExecutionOption) (evm.Transaction, error) {
	return v.client.Execute(ctx, func(ctx context.Context, opts *evm.TransactOpts) (*types.Transaction, error) {
		return v.contract.Withdraw(opts.TransactOpts, v.ValueToBigInt(amount))
	}, opts...)
}