wehub-resource-sync
86 lines
1.9 KiB
Go
86 lines
1.9 KiB
Go
package external
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import (
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"fmt"
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"regexp"
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"strconv"
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"strings"
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"github.com/trustwallet/assets-go-libs/http"
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)
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var (
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holdersRegexp = regexp.MustCompile(`(\d+)\saddresses`)
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decimalsRegexp = regexp.MustCompile(`(\d+)\s+<\/div>`)
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symbolRegexp = regexp.MustCompile(`<b>(\w+)<\/b>\s<span`)
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)
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type TokenInfo struct {
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Symbol string
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Decimals int
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HoldersCount int
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}
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func GetTokenInfo(tokenID, tokentType string) (*TokenInfo, error) {
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switch strings.ToLower(tokentType) {
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case "erc20":
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return GetTokenInfoForERC20(tokenID)
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case "bep20":
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return GetTokenInfoByScraping(fmt.Sprintf("https://bscscan.com/token/%s", tokenID))
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case "fantom":
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return GetTokenInfoByScraping(fmt.Sprintf("https://ftmscan.com/token/%s", tokenID))
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case "polygon":
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return GetTokenInfoByScraping(fmt.Sprintf("https://polygonscan.com/token/%s", tokenID))
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case "avalanche":
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return GetTokenInfoByScraping(fmt.Sprintf("https://snowtrace.io/token/%s", tokenID))
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case "spl":
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return GetTokenInfoForSPL(tokenID)
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case "trc20":
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return GetTokenInfoForTRC20(tokenID)
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case "trc10":
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return GetTokenInfoForTRC10(tokenID)
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}
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return nil, nil
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}
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func GetTokenInfoByScraping(url string) (*TokenInfo, error) {
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data, err := http.GetHTTPResponseBytes(url)
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if err != nil {
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return nil, err
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}
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// Remove all "," from content.
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pageContent := strings.ReplaceAll(string(data), ",", "")
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var holders, decimals int
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var symbol string
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match := symbolRegexp.FindStringSubmatch(pageContent)
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if len(match) > 1 {
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symbol = match[1]
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}
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match = decimalsRegexp.FindStringSubmatch(pageContent)
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if len(match) > 1 {
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decimals, err = strconv.Atoi(match[1])
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if err != nil {
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return nil, err
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}
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}
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match = holdersRegexp.FindStringSubmatch(pageContent)
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if len(match) > 1 {
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holders, err = strconv.Atoi(match[1])
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if err != nil {
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return nil, err
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}
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}
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return &TokenInfo{
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Symbol: symbol,
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Decimals: decimals,
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HoldersCount: holders,
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}, nil
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}
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