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types.go
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types.go
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package types
import (
"encoding/json"
"fmt"
"strings"
"time"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/modules/incubator/nft/exported"
)
type FungibleToken struct {
Denom string `json:"denom"`
EmissionAmount int64 `json:"emission_amount"`
Creator sdk.AccAddress `json:"creator"`
}
func (c FungibleToken) String() string {
return strings.TrimSpace(fmt.Sprintf(`Creator: %s
EmissionAmount: %d
Denom: %s`, c.Creator.String(), c.EmissionAmount, c.Denom))
}
type NFT struct {
ID string `json:"id"`
Denom string `json:"denom"`
Owner sdk.AccAddress `json:"owner"`
Price sdk.Coins `json:"price"`
Status NFTStatus `json:"status"`
SellerBeneficiary sdk.AccAddress `json:"seller_beneficiary"`
TimeCreated time.Time `json:"time_created"`
Offers []*Offer `json:"offers"`
}
func NewNFT(id string, denom string, owner sdk.AccAddress, price sdk.Coins) *NFT {
return &NFT{
ID: id,
Owner: owner,
Denom: denom,
Price: price,
TimeCreated: time.Now().UTC(),
}
}
func (m NFT) String() string {
var offers []string
for _, offer := range m.Offers {
offerJSON, _ := json.Marshal(offer)
offers = append(offers, string(offerJSON))
}
return strings.TrimSpace(fmt.Sprintf(`ID: %s
Owner: %s
Denom: %s
Price: %s
Status: %v
SellerBeneficiary: %s
TimeCreated: %v
Offers: %v`, m.ID, m.Owner, m.Denom, m.Price, m.Status, m.SellerBeneficiary, m.TimeCreated, offers))
}
func (m *NFT) GetPrice() sdk.Coins {
return m.Price
}
func (m *NFT) SetPrice(price sdk.Coins) {
m.Price = price
}
func (m *NFT) IsOnSale() bool {
return m.Status == NFTStatusOnAuction || m.Status == NFTStatusOnMarket
}
func (m *NFT) IsOnMarket() bool {
return m.Status == NFTStatusOnMarket
}
func (m *NFT) IsOnAuction() bool {
return m.Status == NFTStatusOnAuction
}
func (m *NFT) IsActive() bool {
return m.Status == NFTStatusDefault || m.Status == NFTStatusOnMarket || m.Status == NFTStatusOnAuction
}
func (m *NFT) SetStatus(status NFTStatus) {
m.Status = status
}
func (m *NFT) SetSellerBeneficiary(addr sdk.AccAddress) {
m.SellerBeneficiary = addr
}
func (m *NFT) GetTimeCreated() time.Time {
return m.TimeCreated
}
func (m *NFT) AddOffer(offer *Offer) {
m.Offers = append(m.Offers, offer)
}
func (m *NFT) GetOffer(id string) (*Offer, bool) {
for _, offer := range m.Offers {
offer := offer
if offer.ID == id {
return offer, true
}
}
return nil, false
}
func (m *NFT) RemoveOffer(offerID string, buyer sdk.AccAddress) bool {
for k, offer := range m.Offers {
k, offer := k, offer
if offer.ID == offerID && offer.Buyer.Equals(buyer) {
// this is common sliceTrick for slice of pointers
// needed for avoid memory leak
if k < len(m.Offers)-1 {
copy(m.Offers[k:], m.Offers[k+1:])
}
m.Offers[len(m.Offers)-1] = nil
m.Offers = m.Offers[:len(m.Offers)-1]
return true
}
}
return false
}
type Offer struct {
ID string `json:"id"`
Buyer sdk.AccAddress `json:"buyer"`
Price sdk.Coins `json:"price"`
BuyerBeneficiary sdk.AccAddress `json:"buyer_beneficiary"`
BeneficiaryCommission string `json:"beneficiary_commission"`
}
type AuctionBid struct {
Bidder sdk.AccAddress `json:"bidder"` // account address that made the bid
BuyerBeneficiary sdk.AccAddress `json:"buyer_beneficiary"` // account address that will be the beneficiary of the purchase
BeneficiaryCommission string `json:"beneficiary_commission"`
Bid sdk.Coins `json:"bid"`
TimeCreated time.Time `json:"time_created"`
}
type AuctionLot struct {
NFTID string `json:"nft_id"`
LastBid *AuctionBid `json:"last_bid"`
OpeningPrice sdk.Coins `json:"opening_price"`
BuyoutPrice sdk.Coins `json:"buyout_price"`
ExpirationTime time.Time `json:"expiration_time"`
}
func NewAuctionLot(id string, openingPrice, buyoutPrice sdk.Coins, expTime time.Time) *AuctionLot {
return &AuctionLot{
NFTID: id,
OpeningPrice: openingPrice,
BuyoutPrice: buyoutPrice,
ExpirationTime: expTime,
}
}
func NewAuctionBid(bidder, beneficiary sdk.AccAddress, price sdk.Coins, commission string) *AuctionBid {
return &AuctionBid{
Bidder: bidder,
BuyerBeneficiary: beneficiary,
Bid: price,
TimeCreated: time.Now().UTC(),
BeneficiaryCommission: commission,
}
}
func (lot *AuctionLot) SetLastBid(bid *AuctionBid) {
lot.LastBid = bid
}
func (lot AuctionLot) String() string {
base := strings.TrimSpace(fmt.Sprintf(`NFT: %s
OpeningPrice: %v
ExpirationTime: %v
`, lot.NFTID, lot.OpeningPrice, lot.ExpirationTime))
if lot.BuyoutPrice.IsZero() {
base += strings.TrimSpace(fmt.Sprintf(`
BuyoutPrice: %v`, nil))
} else {
base += strings.TrimSpace(fmt.Sprintf(`
BuyoutPrice: %v`, lot.BuyoutPrice))
}
if lot.LastBid != nil {
base += strings.TrimSpace(fmt.Sprintf(`
LastBid: %v
TimeOfLastBid: %v`, lot.LastBid.Bid, lot.LastBid.TimeCreated))
}
return base
}
// copy of data got from exported/nft interface
type NFTMetaData struct {
ID string `json:"id"`
Owner sdk.AccAddress `json:"owner"`
TokenURI string `json:"token_uri"`
}
func (d NFTMetaData) String() string {
return strings.TrimSpace(fmt.Sprintf(`ID: %s
Owner: %s
TokenURI: %s`, d.ID, d.Owner, d.TokenURI))
}
func NewNFTMetaData(token exported.NFT) *NFTMetaData {
return &NFTMetaData{
ID: token.GetID(),
Owner: token.GetOwner(),
TokenURI: token.GetTokenURI(),
}
}
type NFTInfo struct {
MPNFTInfo *NFT `json:"nft_mp_info"`
*NFTMetaData `json:"nft_meta_data"`
}
func (i NFTInfo) String() string {
return strings.TrimSpace(fmt.Sprintf(`MarketPlaceInfo: %s
MetaData: %s`, i.MPNFTInfo, i.NFTMetaData))
}
func NewNFTInfo(nft *NFT, token exported.NFT) *NFTInfo {
return &NFTInfo{
MPNFTInfo: nft,
NFTMetaData: NewNFTMetaData(token),
}
}
// struct for data in IBC packet
type NFTPacketData struct {
CollectionDenom string `json:"denom"`
ID string `json:"id"`
TokenMetadataURI string `json:"tokenMetadataUri"`
Sender string `json:"sender"`
Receiver string `json:"receiver"`
Source bool `json:"source"`
}