status-go/services/wallet/thirdparty/opensea/client.go

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package opensea
import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"strconv"
"strings"
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"sync"
"time"
"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/log"
"github.com/status-im/status-go/services/wallet/bigint"
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walletCommon "github.com/status-im/status-go/services/wallet/common"
"github.com/status-im/status-go/services/wallet/thirdparty"
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"github.com/status-im/status-go/services/wallet/walletevent"
)
const (
EventCollectibleStatusChanged walletevent.EventType = "wallet-collectible-status-changed"
)
const AssetLimit = 200
const CollectionLimit = 300
const RequestTimeout = 5 * time.Second
const GetRequestRetryMaxCount = 15
const GetRequestWaitTime = 300 * time.Millisecond
const ChainIDRequiringAPIKey = walletCommon.EthereumMainnet
var (
ErrChainIDNotSupported = errors.New("chainID not supported by opensea API")
)
func getbaseURL(chainID uint64) (string, error) {
switch chainID {
case walletCommon.EthereumMainnet:
return "https://api.opensea.io/api/v1", nil
case walletCommon.EthereumGoerli:
return "https://testnets-api.opensea.io/api/v1", nil
}
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return "", ErrChainIDNotSupported
}
var OpenseaClientInstances = make(map[uint64]*Client)
var OpenseaClientInstancesLock = sync.RWMutex{}
var OpenseaHTTPClient *HTTPClient = nil
type TraitValue string
func (st *TraitValue) UnmarshalJSON(b []byte) error {
var item interface{}
if err := json.Unmarshal(b, &item); err != nil {
return err
}
switch v := item.(type) {
case float64:
*st = TraitValue(strconv.FormatFloat(v, 'f', 2, 64))
case int:
*st = TraitValue(strconv.Itoa(v))
case string:
*st = TraitValue(v)
}
return nil
}
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type AssetContainer struct {
Assets []Asset `json:"assets"`
NextCursor string `json:"next"`
PreviousCursor string `json:"previous"`
}
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type Contract struct {
Address string `json:"address"`
}
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type Trait struct {
TraitType string `json:"trait_type"`
Value TraitValue `json:"value"`
DisplayType string `json:"display_type"`
MaxValue string `json:"max_value"`
}
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type PaymentToken struct {
ID int `json:"id"`
Symbol string `json:"symbol"`
Address string `json:"address"`
ImageURL string `json:"image_url"`
Name string `json:"name"`
Decimals int `json:"decimals"`
EthPrice string `json:"eth_price"`
UsdPrice string `json:"usd_price"`
}
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type LastSale struct {
PaymentToken PaymentToken `json:"payment_token"`
}
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type SellOrder struct {
CurrentPrice string `json:"current_price"`
}
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type Asset struct {
ID int `json:"id"`
TokenID *bigint.BigInt `json:"token_id"`
Name string `json:"name"`
Description string `json:"description"`
Permalink string `json:"permalink"`
ImageThumbnailURL string `json:"image_thumbnail_url"`
ImageURL string `json:"image_url"`
AnimationURL string `json:"animation_url"`
AnimationMediaType string `json:"animation_media_type"`
Contract Contract `json:"asset_contract"`
Collection Collection `json:"collection"`
Traits []Trait `json:"traits"`
LastSale LastSale `json:"last_sale"`
SellOrders []SellOrder `json:"sell_orders"`
BackgroundColor string `json:"background_color"`
TokenURI string `json:"token_metadata"`
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}
type CollectionTrait struct {
Min float64 `json:"min"`
Max float64 `json:"max"`
}
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type Collection struct {
Name string `json:"name"`
Slug string `json:"slug"`
ImageURL string `json:"image_url"`
Traits map[string]CollectionTrait `json:"traits"`
}
type OwnedCollection struct {
Collection
OwnedAssetCount *bigint.BigInt `json:"owned_asset_count"`
}
type HTTPClient struct {
client *http.Client
getRequestLock sync.RWMutex
}
func newHTTPClient() *HTTPClient {
return &HTTPClient{
client: &http.Client{
Timeout: RequestTimeout,
},
}
}
func (o *HTTPClient) doGetRequest(url string, apiKey string) ([]byte, error) {
// Ensure only one thread makes a request at a time
o.getRequestLock.Lock()
defer o.getRequestLock.Unlock()
retryCount := 0
statusCode := http.StatusOK
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// Try to do the request without an apiKey first
tmpAPIKey := ""
for {
req, err := http.NewRequest(http.MethodGet, url, nil)
if err != nil {
return nil, err
}
req.Header.Set("Content-Type", "application/json")
req.Header.Set("User-Agent", "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:96.0) Gecko/20100101 Firefox/96.0")
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if len(tmpAPIKey) > 0 {
req.Header.Set("X-API-KEY", tmpAPIKey)
}
resp, err := o.client.Do(req)
if err != nil {
return nil, err
}
defer func() {
if err := resp.Body.Close(); err != nil {
log.Error("failed to close opensea request body", "err", err)
}
}()
statusCode = resp.StatusCode
switch resp.StatusCode {
case http.StatusOK:
body, err := ioutil.ReadAll(resp.Body)
return body, err
case http.StatusTooManyRequests:
if retryCount < GetRequestRetryMaxCount {
// sleep and retry
time.Sleep(GetRequestWaitTime)
retryCount++
continue
}
// break and error
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case http.StatusForbidden:
// Request requires an apiKey, set it and retry
if tmpAPIKey == "" && apiKey != "" {
tmpAPIKey = apiKey
// sleep and retry
time.Sleep(GetRequestWaitTime)
continue
}
// break and error
default:
// break and error
}
break
}
return nil, fmt.Errorf("unsuccessful request: %d %s", statusCode, http.StatusText(statusCode))
}
func (o *HTTPClient) doContentTypeRequest(url string) (string, error) {
req, err := http.NewRequest(http.MethodHead, url, nil)
if err != nil {
return "", err
}
resp, err := o.client.Do(req)
if err != nil {
return "", err
}
defer func() {
if err := resp.Body.Close(); err != nil {
log.Error("failed to close head request body", "err", err)
}
}()
return resp.Header.Get("Content-Type"), nil
}
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type Client struct {
client *HTTPClient
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url string
apiKey string
IsConnected bool
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LastCheckedAt int64
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IsConnectedLock sync.RWMutex
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feed *event.Feed
}
// new opensea client.
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func NewOpenseaClient(chainID uint64, apiKey string, feed *event.Feed) (*Client, error) {
OpenseaClientInstancesLock.Lock()
defer OpenseaClientInstancesLock.Unlock()
if OpenseaHTTPClient == nil {
OpenseaHTTPClient = newHTTPClient()
}
var tmpAPIKey string = ""
if chainID == ChainIDRequiringAPIKey {
tmpAPIKey = apiKey
}
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if client, ok := OpenseaClientInstances[chainID]; ok {
if client.apiKey == tmpAPIKey {
return client, nil
}
}
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baseURL, err := getbaseURL(chainID)
if err != nil {
return nil, err
}
openseaClient := &Client{
client: OpenseaHTTPClient,
url: baseURL,
apiKey: tmpAPIKey,
IsConnected: true,
LastCheckedAt: time.Now().Unix(),
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feed: feed,
}
OpenseaClientInstances[chainID] = openseaClient
return openseaClient, nil
}
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func (o *Client) setIsConnected(value bool) {
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o.IsConnectedLock.Lock()
defer o.IsConnectedLock.Unlock()
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o.LastCheckedAt = time.Now().Unix()
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if value != o.IsConnected {
message := "down"
if value {
message = "up"
}
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if o.feed != nil {
o.feed.Send(walletevent.Event{
Type: EventCollectibleStatusChanged,
Accounts: []common.Address{},
Message: message,
At: time.Now().Unix(),
})
}
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}
o.IsConnected = value
}
func (o *Client) FetchAllCollectionsByOwner(owner common.Address) ([]OwnedCollection, error) {
offset := 0
var collections []OwnedCollection
for {
url := fmt.Sprintf("%s/collections?asset_owner=%s&offset=%d&limit=%d", o.url, owner, offset, CollectionLimit)
body, err := o.client.doGetRequest(url, o.apiKey)
if err != nil {
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o.setIsConnected(false)
return nil, err
}
// if Json is not returned there must be an error
if !json.Valid(body) {
return nil, fmt.Errorf("invalid json: %s", string(body))
}
var tmp []OwnedCollection
err = json.Unmarshal(body, &tmp)
if err != nil {
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o.setIsConnected(false)
return nil, err
}
collections = append(collections, tmp...)
if len(tmp) < CollectionLimit {
break
}
}
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o.setIsConnected(true)
return collections, nil
}
func (o *Client) FetchAllAssetsByOwnerAndCollection(owner common.Address, collectionSlug string, cursor string, limit int) (*AssetContainer, error) {
queryParams := url.Values{
"owner": {owner.String()},
"collection": {collectionSlug},
}
if len(cursor) > 0 {
queryParams["cursor"] = []string{cursor}
}
return o.fetchAssets(queryParams, limit)
}
func (o *Client) FetchAllAssetsByOwnerAndContractAddress(owner common.Address, contractAddresses []common.Address, cursor string, limit int) (*AssetContainer, error) {
queryParams := url.Values{
"owner": {owner.String()},
}
for _, contractAddress := range contractAddresses {
queryParams.Add("asset_contract_addresses", contractAddress.String())
}
if len(cursor) > 0 {
queryParams["cursor"] = []string{cursor}
}
return o.fetchAssets(queryParams, limit)
}
func (o *Client) FetchAllAssetsByOwner(owner common.Address, cursor string, limit int) (*AssetContainer, error) {
queryParams := url.Values{
"owner": {owner.String()},
}
if len(cursor) > 0 {
queryParams["cursor"] = []string{cursor}
}
return o.fetchAssets(queryParams, limit)
}
func (o *Client) FetchAssetsByNFTUniqueID(uniqueIDs []thirdparty.NFTUniqueID, limit int) (*AssetContainer, error) {
queryParams := url.Values{}
for _, uniqueID := range uniqueIDs {
queryParams.Add("token_ids", uniqueID.TokenID.String())
queryParams.Add("asset_contract_addresses", uniqueID.ContractAddress.String())
}
return o.fetchAssets(queryParams, limit)
}
func (o *Client) fetchAssets(queryParams url.Values, limit int) (*AssetContainer, error) {
assets := new(AssetContainer)
if len(queryParams["cursor"]) > 0 {
assets.PreviousCursor = queryParams["cursor"][0]
}
tmpLimit := AssetLimit
if limit > 0 && limit < tmpLimit {
tmpLimit = limit
}
queryParams["limit"] = []string{strconv.Itoa(tmpLimit)}
for {
url := o.url + "/assets?" + queryParams.Encode()
body, err := o.client.doGetRequest(url, o.apiKey)
if err != nil {
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o.setIsConnected(false)
return nil, err
}
// if Json is not returned there must be an error
if !json.Valid(body) {
return nil, fmt.Errorf("invalid json: %s", string(body))
}
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container := AssetContainer{}
err = json.Unmarshal(body, &container)
if err != nil {
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o.setIsConnected(false)
return nil, err
}
for _, asset := range container.Assets {
for i := range asset.Traits {
asset.Traits[i].TraitType = strings.Replace(asset.Traits[i].TraitType, "_", " ", 1)
asset.Traits[i].Value = TraitValue(strings.Title(string(asset.Traits[i].Value)))
}
if len(asset.AnimationURL) > 0 {
asset.AnimationMediaType, err = o.client.doContentTypeRequest(asset.AnimationURL)
if err != nil {
asset.AnimationURL = ""
}
}
assets.Assets = append(assets.Assets, asset)
}
assets.NextCursor = container.NextCursor
if len(assets.NextCursor) == 0 {
break
}
queryParams["cursor"] = []string{assets.NextCursor}
if limit > 0 && len(assets.Assets) >= limit {
break
}
}
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o.setIsConnected(true)
return assets, nil
}