package external

import (
	"errors"
	"fmt"

	"github.com/trustwallet/assets-go-libs/http"
)

const trc20APIURL = "https://apilist.tronscan.io/api/token_trc20?contract=%s"

type TRC20TokensResponse struct {
	TRC20Tokens []struct {
		Symbol       string `json:"symbol"`
		Decimals     int    `json:"decimals"`
		HoldersCount int    `json:"holders_count"`
	} `json:"trc20_tokens"`
}

func GetTokenInfoForTRC20(tokenID string) (*TokenInfo, error) {
	url := fmt.Sprintf(trc20APIURL, tokenID)

	var res TRC20TokensResponse
	err := http.GetHTTPResponse(url, &res)
	if err != nil {
		return nil, err
	}

	if len(res.TRC20Tokens) == 0 {
		return nil, errors.New("not found")
	}

	return &TokenInfo{
		Symbol:       res.TRC20Tokens[0].Symbol,
		Decimals:     res.TRC20Tokens[0].Decimals,
		HoldersCount: res.TRC20Tokens[0].HoldersCount,
	}, nil
}