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81 lines
1.6 KiB
Go
81 lines
1.6 KiB
Go
package chansummary
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"net/http"
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)
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type chainApi struct {
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baseUrl string
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}
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type transaction struct {
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Vin []*vin `json:"vin"`
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Vout []*vout `json:"vout"`
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}
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type vin struct {
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Tixid string `json:"txid"`
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Vout int `json:"vout"`
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Prevout *vout `json:"prevout"`
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}
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type vout struct {
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ScriptPubkey string `json:"scriptpubkey"`
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ScriptPubkeyAsm string `json:"scriptpubkey_asm"`
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ScriptPubkeyType string `json:"scriptpubkey_type"`
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ScriptPubkeyAddr string `json:"scriptpubkey_addr"`
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Value uint64 `json:"value"`
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outspend *outspend
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}
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type outspend struct {
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Spent bool `json:"spent"`
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Txid string `json:"txid"`
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Vin int `json:"vin"`
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Status *status `json:"status"`
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}
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type status struct {
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Confirmed bool `json:"confirmed"`
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BlockHeight int `json:"block_height"`
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BlockHash string `json:"block_hash"`
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}
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func (a *chainApi) Transaction(txid string) (*transaction, error) {
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tx := &transaction{}
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err := Fetch(fmt.Sprintf("%s/tx/%s", a.baseUrl, txid), tx)
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if err != nil {
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return nil, err
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}
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for idx, vout := range tx.Vout {
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url := fmt.Sprintf(
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"%s/tx/%s/outspend/%d", a.baseUrl, txid, idx,
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)
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outspend := outspend{}
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err := Fetch(url, &outspend)
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if err != nil {
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return nil, err
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}
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vout.outspend = &outspend
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}
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return tx, nil
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}
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func Fetch(url string, target interface{}) error {
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resp, err := http.Get(url)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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body := new(bytes.Buffer)
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_, err = body.ReadFrom(resp.Body)
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if err != nil {
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return err
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}
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return json.Unmarshal(body.Bytes(), target)
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}
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