80 lines
1.5 KiB
Go
80 lines
1.5 KiB
Go
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/*
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Copyright © 2023 NAME HERE <EMAIL ADDRESS>
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*/
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package cmd
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import (
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"github.com/spf13/cobra"
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)
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type Tokens []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 Price map[string]USD
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type USD struct {
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Usd float64
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}
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var (
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price_url = "https://api.coingecko.com/api/v3/simple/price?"
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vs_url = "https://api.coingecko.com/api/v3/simple/supported_vs_currencies"
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tokens_url = "https://api.coingecko.com/api/v3/coins/list"
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)
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var amount float64
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// cryptoCmd represents the crypto command
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var cryptoCmd = &cobra.Command{
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Use: "crypto",
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Short: "get price of token",
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Long: `get price of token`,
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RunE: func(cmd *cobra.Command, args []string) error {
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price, err := usdPrice(args[0])
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if err != nil {
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return err
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}
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price = price * amount
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price2 := float64(1)
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if len(args) >= 2 {
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price2, err = usdPrice(args[1])
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if err != nil {
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return err
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}
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}
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fmt.Println(price / price2)
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return nil
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},
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}
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func usdPrice(token string) (float64, error) {
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resp, err := http.Get(price_url + fmt.Sprintf("ids=%s&vs_currencies=usd", token))
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if err != nil {
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return 0, err
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}
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defer resp.Body.Close()
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body, err := io.ReadAll(resp.Body)
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if err != nil {
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return 0, err
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}
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var price Price
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err = json.Unmarshal(body, &price)
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if err != nil {
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return 0, err
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}
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return price[token].Usd, nil
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}
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func init() {
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rootCmd.AddCommand(cryptoCmd)
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cryptoCmd.PersistentFlags().Float64VarP(&amount, "amount", "a", 1, "amount of the given token")
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}
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