package frostfs

import (
	"fmt"

	"git.frostfs.info/TrueCloudLab/frostfs-contract/rpcclient/frostfs"
	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/event"
	"github.com/nspcc-dev/neo-go/pkg/core/state"
	"github.com/nspcc-dev/neo-go/pkg/util"
)

// Withdraw structure of frostfs.Withdraw notification from mainnet chain.
type Withdraw struct {
	IDValue     []byte
	AmountValue int64 // Fixed8
	UserValue   util.Uint160
}

// MorphEvent implements Neo:Morph Event interface.
func (Withdraw) MorphEvent() {}

// ID is a withdraw transaction hash.
func (w Withdraw) ID() []byte { return w.IDValue }

// User returns withdraw receiver script hash from main net.
func (w Withdraw) User() util.Uint160 { return w.UserValue }

// Amount of the withdraw assets.
func (w Withdraw) Amount() int64 { return w.AmountValue }

// ParseWithdraw notification into withdraw structure.
func ParseWithdraw(e *state.ContainedNotificationEvent) (event.Event, error) {
	var we frostfs.WithdrawEvent
	if err := we.FromStackItem(e.Item); err != nil {
		return nil, fmt.Errorf("parse frostfs.WithdrawEvent: %w", err)
	}

	return Withdraw{
		IDValue:     we.TxHash[:],
		AmountValue: we.Amount.Int64(),
		UserValue:   we.User,
	}, nil
}