package common

import (
	"math/big"
	"time"

	ethCommon "github.com/ethereum/go-ethereum/common"
)

// Block represents of an Ethereum block
type Block struct {
	Num        int64          `meddler:"eth_block_num"`
	Timestamp  time.Time      `meddler:"timestamp,utctime"`
	Hash       ethCommon.Hash `meddler:"hash"`
	ParentHash ethCommon.Hash `meddler:"-" json:"-"`
}

// RollupData contains information returned by the Rollup smart contract
type RollupData struct {
	// L1UserTxs that were submitted in the block
	L1UserTxs            []L1Tx
	Batches              []BatchData
	AddedTokens          []Token
	Withdrawals          []WithdrawInfo
	UpdateBucketWithdraw []BucketUpdate
	TokenExchanges       []TokenExchange
	Vars                 *RollupVariables
}

// NewRollupData creates an empty RollupData with the slices initialized.
func NewRollupData() RollupData {
	return RollupData{
		L1UserTxs:   make([]L1Tx, 0),
		Batches:     make([]BatchData, 0),
		AddedTokens: make([]Token, 0),
		Withdrawals: make([]WithdrawInfo, 0),
		Vars:        nil,
	}
}

// AuctionData contains information returned by the Action smart contract
type AuctionData struct {
	Bids         []Bid
	Coordinators []Coordinator
	Vars         *AuctionVariables
}

// NewAuctionData creates an empty AuctionData with the slices initialized.
func NewAuctionData() AuctionData {
	return AuctionData{
		Bids:         make([]Bid, 0),
		Coordinators: make([]Coordinator, 0),
		Vars:         nil,
	}
}

// WDelayerTransfer represents a transfer (either deposit or withdrawal) in the
// WDelayer smart contract
type WDelayerTransfer struct {
	Owner  ethCommon.Address
	Token  ethCommon.Address
	Amount *big.Int
	// TxHash ethCommon.Hash // hash of the transaction in which the wdelayer transfer happened
}

// WDelayerData contains information returned by the WDelayer smart contract
type WDelayerData struct {
	Vars     *WDelayerVariables
	Deposits []WDelayerTransfer
	// We use an array because there can be multiple deposits in a single eth transaction
	DepositsByTxHash       map[ethCommon.Hash][]*WDelayerTransfer
	Withdrawals            []WDelayerTransfer
	EscapeHatchWithdrawals []WDelayerEscapeHatchWithdrawal
}

// NewWDelayerData creates an empty WDelayerData.
func NewWDelayerData() WDelayerData {
	return WDelayerData{
		Vars:             nil,
		Deposits:         make([]WDelayerTransfer, 0),
		DepositsByTxHash: make(map[ethCommon.Hash][]*WDelayerTransfer),
		Withdrawals:      make([]WDelayerTransfer, 0),
	}
}

// BlockData contains the information of a Block
type BlockData struct {
	Block    Block
	Rollup   RollupData
	Auction  AuctionData
	WDelayer WDelayerData
}