crypto

cmd/crypto.go

@@ -12,10 +12,16 @@ import (
 	"github.com/spf13/cobra"
 )
 
-type Tokens []struct {
-	ID     string `json:"id"`
-	Symbol string `json:"symbol"`
-	Name   string `json:"name"`
+type Search struct {
+	Coins []struct {
+		ID            string `json:"id"`
+		Name          string `json:"name"`
+		APISymbol     string `json:"api_symbol"`
+		Symbol        string `json:"symbol"`
+		MarketCapRank int    `json:"market_cap_rank"`
+		Thumb         string `json:"thumb"`
+		Large         string `json:"large"`
+	} `json:"coins"`
 }
 
 type Price map[string]USD
@@ -26,8 +32,7 @@ type USD struct {
 
 var (
 	price_url  = "https://api.coingecko.com/api/v3/simple/price?"
-	vs_url     = "https://api.coingecko.com/api/v3/simple/supported_vs_currencies"
-	tokens_url = "https://api.coingecko.com/api/v3/coins/list"
+	search_url = "https://api.coingecko.com/api/v3/search?query="
 )
 
 var amount float64
@@ -37,6 +42,13 @@ var cryptoCmd = &cobra.Command{
 	Use:   "crypto",
 	Short: "get price of token",
 	Long:  `get price of token`,
+	Args:  cobra.MatchAll(cobra.RangeArgs(1, 2), cobra.OnlyValidArgs),
+	ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+		if len(args) >= 2 {
+			return nil, cobra.ShellCompDirectiveNoFileComp
+		}
+		return getTokens(toComplete), cobra.ShellCompDirectiveNoFileComp
+	},
 	RunE: func(cmd *cobra.Command, args []string) error {
 		price, err := usdPrice(args[0])
 		if err != nil {
@@ -55,6 +67,31 @@ var cryptoCmd = &cobra.Command{
 	},
 }
 
+func getTokens(in string) []string {
+	if in == "" {
+		return []string{"ethereum", "bitcoin", "tether", "binancecoin", "usd-coin", "ripple", "cardano", "dogecoin", "matic-network"}
+	}
+	resp, err := http.Get(search_url + in)
+	if err != nil {
+		return []string{err.Error()}
+	}
+	defer resp.Body.Close()
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return []string{err.Error()}
+	}
+	var tokens Search
+	err = json.Unmarshal(body, &tokens)
+	if err != nil {
+		return []string{err.Error()}
+	}
+	out := []string{}
+	for _, token := range tokens.Coins {
+		out = append(out, token.ID)
+	}
+	return out
+}
+
 func usdPrice(token string) (float64, error) {
 	resp, err := http.Get(price_url + fmt.Sprintf("ids=%s&vs_currencies=usd", token))
 	if err != nil {