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329 lines
7.6 KiB
Go
329 lines
7.6 KiB
Go
package coingecko
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import (
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"errors"
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"fmt"
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"strconv"
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"strings"
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"time"
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gecko "github.com/miguelmota/cointop/cointop/api/coingecko/v3"
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geckoTypes "github.com/miguelmota/cointop/cointop/api/coingecko/v3/types"
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apitypes "github.com/miguelmota/cointop/cointop/common/api/types"
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util "github.com/miguelmota/cointop/cointop/common/api/util"
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)
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// ErrPingFailed is the error for when pinging the API fails
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var ErrPingFailed = errors.New("Failed to ping")
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// ErrNotFound is the error when the target is not found
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var ErrNotFound = errors.New("Not found")
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// Service service
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type Service struct {
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client *gecko.Client
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}
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// NewCoinGecko new service
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func NewCoinGecko() *Service {
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client := gecko.NewClient(nil)
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return &Service{
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client: client,
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}
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}
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// Ping ping API
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func (s *Service) Ping() error {
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if _, err := s.client.Ping(); err != nil {
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return err
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}
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return nil
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}
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func (s *Service) getLimitedCoinData(convert string, offset int) ([]apitypes.Coin, error) {
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var ret []apitypes.Coin
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ids := []string{}
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perPage := 250
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page := offset
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sparkline := false
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pcp := geckoTypes.PriceChangePercentageObject
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priceChangePercentage := []string{pcp.PCP1h, pcp.PCP24h, pcp.PCP7d}
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order := geckoTypes.OrderTypeObject.MarketCapDesc
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convertTo := strings.ToLower(convert)
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if convertTo == "" {
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convertTo = "usd"
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}
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list, err := s.client.CoinsMarket(convertTo, ids, order, perPage, page, sparkline, priceChangePercentage)
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if err != nil {
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return nil, err
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}
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if list != nil {
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// for fetching "simple prices"
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currencies := make([]string, len(*list))
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for i, item := range *list {
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currencies[i] = item.Name
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}
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// NOTE: "simple" prices include decimal places so we use these prices
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// if available but if there's an error then simply use "current price"
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// which may not have a decimal place.
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prices, err := s.client.SimplePrice(currencies, []string{convertTo})
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for _, item := range *list {
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price := item.CurrentPrice
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if prices != nil && err == nil {
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pricesObj := *prices
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if coinObj, ok := pricesObj[strings.ToLower(item.Name)]; ok {
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if p, ok := coinObj[convertTo]; ok {
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price = float64(p)
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}
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}
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}
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var percentChange1H float64
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var percentChange24H float64
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var percentChange7D float64
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if item.PriceChangePercentage1hInCurrency != nil {
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percentChange1H = *item.PriceChangePercentage1hInCurrency
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}
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if item.PriceChangePercentage24hInCurrency != nil {
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percentChange24H = *item.PriceChangePercentage24hInCurrency
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}
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if item.PriceChangePercentage7dInCurrency != nil {
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percentChange7D = *item.PriceChangePercentage7dInCurrency
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}
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availableSupply := item.CirculatingSupply
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totalSupply := item.TotalSupply
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if totalSupply == 0 {
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totalSupply = availableSupply
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}
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ret = append(ret, apitypes.Coin{
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ID: util.FormatID(item.ID),
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Name: util.FormatName(item.Name),
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Symbol: util.FormatSymbol(item.Symbol),
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Rank: util.FormatRank(item.MarketCapRank),
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AvailableSupply: util.FormatSupply(availableSupply),
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TotalSupply: util.FormatSupply(totalSupply),
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MarketCap: util.FormatMarketCap(item.MarketCap),
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Price: util.FormatPrice(price, convert),
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PercentChange1H: util.FormatPercentChange(percentChange1H),
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PercentChange24H: util.FormatPercentChange(percentChange24H),
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PercentChange7D: util.FormatPercentChange(percentChange7D),
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Volume24H: util.FormatVolume(item.TotalVolume),
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LastUpdated: util.FormatLastUpdated(item.LastUpdated),
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})
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}
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}
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return ret, nil
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}
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// GetAllCoinData gets all coin data. Need to paginate through all pages
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func (s *Service) GetAllCoinData(convert string, ch chan []apitypes.Coin) error {
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go func() {
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maxPages := 5
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defer close(ch)
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for i := 0; i < maxPages; i++ {
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if i > 0 {
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time.Sleep(1 * time.Second)
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}
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coins, err := s.getLimitedCoinData(convert, i)
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if err != nil {
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return
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}
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ch <- coins
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}
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}()
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return nil
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}
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// GetCoinGraphData gets coin graph data
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func (s *Service) GetCoinGraphData(symbol, name string, start, end int64) (apitypes.CoinGraph, error) {
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ret := apitypes.CoinGraph{}
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days := strconv.Itoa(util.CalcDays(start, end))
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chart, err := s.client.CoinsIDMarketChart(strings.ToLower(name), "usd", days)
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if err != nil {
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return ret, err
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}
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var marketCap [][]float64
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var priceUSD [][]float64
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var priceBTC [][]float64
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var volumeUSD [][]float64
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if chart.Prices != nil {
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for _, item := range *chart.Prices {
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timestamp := float64(item[0])
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price := float64(item[1])
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priceUSD = append(priceUSD, []float64{
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timestamp,
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price,
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})
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}
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}
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ret.MarketCapByAvailableSupply = marketCap
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ret.PriceBTC = priceBTC
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ret.PriceUSD = priceUSD
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ret.VolumeUSD = volumeUSD
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return ret, nil
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}
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// GetGlobalMarketGraphData gets global market graph data
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func (s *Service) GetGlobalMarketGraphData(start int64, end int64) (apitypes.MarketGraph, error) {
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days := strconv.Itoa(util.CalcDays(start, end))
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ret := apitypes.MarketGraph{}
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graphData, err := s.client.GlobalCharts("usd", days)
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if err != nil {
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return ret, err
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}
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var marketCapUSD [][]float64
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var marketVolumeUSD [][]float64
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if graphData.Stats != nil {
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for _, item := range *graphData.Stats {
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marketCapUSD = append(marketCapUSD, []float64{
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float64(item[0]),
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float64(item[1]),
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})
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}
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}
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ret.MarketCapByAvailableSupply = marketCapUSD
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ret.VolumeUSD = marketVolumeUSD
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return ret, nil
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}
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// GetGlobalMarketData gets global market data
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func (s *Service) GetGlobalMarketData(convert string) (apitypes.GlobalMarketData, error) {
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ret := apitypes.GlobalMarketData{}
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market, err := s.client.Global()
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if err != nil {
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return ret, err
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}
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var totalMarketCap float64
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for _, value := range market.TotalMarketCap {
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totalMarketCap += value
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}
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var totalVolume float64
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for _, value := range market.TotalVolume {
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totalVolume += value
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}
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btcDominance := market.MarketCapPercentage["btc"]
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ret = apitypes.GlobalMarketData{
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TotalMarketCapUSD: totalMarketCap,
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Total24HVolumeUSD: totalVolume,
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BitcoinPercentageOfMarketCap: btcDominance,
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ActiveCurrencies: int(market.ActiveCryptocurrencies),
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ActiveAssets: 0,
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ActiveMarkets: int(market.Markets),
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}
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return ret, nil
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}
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// Price returns the current price of the coin
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func (s *Service) Price(name string, convert string) (float64, error) {
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list, err := s.client.CoinsList()
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if err != nil {
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return 0, err
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}
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for _, item := range *list {
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if item.Symbol == strings.ToLower(name) {
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name = item.Name
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}
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}
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ids := []string{util.NameToSlug(name)}
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convert = strings.ToLower(convert)
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currencies := []string{convert}
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priceList, err := s.client.SimplePrice(ids, currencies)
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if err != nil {
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return 0, err
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}
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for _, item := range *priceList {
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if p, ok := item[convert]; ok {
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return util.FormatPrice(float64(p), convert), nil
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}
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}
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return 0, ErrNotFound
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}
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// CoinLink returns the URL link for the coin
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func (s *Service) CoinLink(name string) string {
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slug := util.NameToSlug(name)
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return fmt.Sprintf("https://www.coingecko.com/en/coins/%s", slug)
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}
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// SupportedCurrencies returns a list of supported currencies
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func (s *Service) SupportedCurrencies() []string {
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return []string{
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"BTC",
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"ETH",
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"BNB",
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"EOS",
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"USD",
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"AED",
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"ARS",
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"AUD",
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"BDT",
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"BHD",
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"BMD",
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"BRL",
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"CAD",
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"CHF",
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"CLP",
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"CNY",
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"CZK",
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"DKK",
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"EUR",
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"GBP",
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"HKD",
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"HUF",
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"IDR",
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"ILS",
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"INR",
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"JPY",
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"KRW",
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"KWD",
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"LKR",
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"MMK",
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"MXN",
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"MYR",
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"NOK",
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"NZD",
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"PHP",
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"PKR",
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"PLN",
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"RUB",
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"SAR",
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"SEK",
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"SGD",
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"THB",
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"TRY",
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"TWD",
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"VEF",
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"VND",
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"ZAR",
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"XDR",
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"XAG",
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}
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}
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