131 lines
4.2 KiB
Go
131 lines
4.2 KiB
Go
// Package coingecko implements a Service which returns price info on cryptocurrencies from coingecko
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package coingecko
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"strings"
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"github.com/matrix-org/go-neb/types"
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mevt "maunium.net/go/mautrix/event"
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"maunium.net/go/mautrix/id"
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)
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// ServiceType of the coingecko service
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const ServiceType = "coingecko"
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// Service represents the coingecko service. It has no Config fields.
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type Service struct {
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types.DefaultService
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}
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type CoinList struct {
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Id string `json:"id"`
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Symbol string `json:"symbol"`
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Name string `json:"name"`
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}
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type Market struct {
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Id string `json:"id"`
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Symbol string `json:"symbol"`
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Name string `json:"name"`
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Image string `json:"image"`
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CurrentPrice float64 `json:"current_price"`
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MarketCap float64 `json:"market_cap"`
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MarketCapRank int16 `json:"market_cap_rank"`
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FullyDilutedValuation string `json:"fully_diluted_valuation"`
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TotalVolume float64 `json:"total_volume"`
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High24 float64 `json:"high_24h"`
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Low24 float64 `json:"low_24h"`
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PriceChange24h float64 `json:"price_change_24h"`
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PriceChangePercentage24h float64 `json:"price_change_percentage_24h"`
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MarketCapChange24h float64 `json:"market_cap_change_24h"`
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MarketCapChangePercentage24h float64 `json:"market_cap_change_percentage_24h"`
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CirculatingSupply float64 `json:"circulating_supply"`
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TotalSupply float64 `json:"total_supply"`
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MaxSupply float64 `json:"max_supply"`
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ATH float64 `json:"ath"`
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ATHChangePercentage float64 `json:"ath_change_percentage"`
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ATHDate string `json:"ath_date"`
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ATL float64 `json:"atl"`
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ATLChangePercentage float64 `json:"atl_change_percentage"`
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ATLDate string `json:"atl_date"`
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LastUpdated string `json:"last_updated"`
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}
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func getIds(query string) []string {
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req, _ := http.NewRequest("GET", "https://api.coingecko.com/api/v3/coins/list", nil)
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req.Header.Set("Accept", "application/json")
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client := &http.Client{}
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resp, _ := client.Do(req)
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defer resp.Body.Close()
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var coinList *[]CoinList
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json.NewDecoder(resp.Body).Decode(&coinList)
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var returnList []string
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for _, coin := range *coinList {
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// get the coingecko ids for the requested coin
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if coin.Symbol == query {
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returnList = append(returnList, coin.Id)
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}
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}
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if len(returnList) > 0 {
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return returnList
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} else {
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// fallback to bitcoin
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returnList = append(returnList, "bitcoin")
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return returnList
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}
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}
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func getData(query []string) string {
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symbol := strings.Join(query, ",")
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url := fmt.Sprintf("https://api.coingecko.com/api/v3/coins/markets?vs_currency=usd&ids=%s&order=market_cap_desc&per_page=1&page=1&sparkline=false", symbol)
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req, _ := http.NewRequest("GET", url, nil)
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req.Header.Set("Accept", "application/json")
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client := &http.Client{}
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resp, _ := client.Do(req)
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defer resp.Body.Close()
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var coin []*Market
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json.NewDecoder(resp.Body).Decode(&coin)
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c := coin[0]
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const output = `%s (%s)
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Current Price: $%.4f
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Market Ca: $%.0f
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24 Hour Volume: $%.0f
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24 Hour High: $%.4f
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24 Hour Low: $%.4f
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All Time High: $%.4f
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All Time Low: $%.4f`
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return fmt.Sprintf(output, c.Id, c.Symbol, c.CurrentPrice, c.MarketCap, c.TotalVolume, c.High24, c.Low24, c.ATH, c.ATL)
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}
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// Commands supported:
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// !coingecko SYMBOL
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// Responds with price data on the currency
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func (e *Service) Commands(cli types.MatrixClient) []types.Command {
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return []types.Command{
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{
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Path: []string{"cc"},
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Command: func(roomID id.RoomID, userID id.UserID, args []string) (interface{}, error) {
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coinIds := getIds(strings.Join(args, ""))
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output := getData(coinIds)
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return &mevt.MessageEventContent{
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MsgType: mevt.MsgNotice,
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Body: output,
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}, nil
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},
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},
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}
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}
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func init() {
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types.RegisterService(func(serviceID string, serviceUserID id.UserID, webhookEndpointURL string) types.Service {
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return &Service{
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DefaultService: types.NewDefaultService(serviceID, serviceUserID, ServiceType),
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}
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})
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}
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