feat: set up project

internal/services/btc/get_transaction.go

@@ -0,0 +1,84 @@
+package btc
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+func getTransactionParams(trxid string) []interface{} {
+	return []interface{}{trxid}
+}
+
+type GetTransactionResponseResult struct {
+	Amount            float64       `json:"amount"`
+	Fee               float64       `json:"fee"`
+	Confirmations     int           `json:"confirmations"`
+	Blockhash         string        `json:"blockhash"`
+	Blockheight       int           `json:"blockheight"`
+	Blockindex        int           `json:"blockindex"`
+	Blocktime         int           `json:"blocktime"`
+	Txid              string        `json:"txid"`
+	Walletconflicts   []interface{} `json:"walletconflicts"`
+	Time              int           `json:"time"`
+	Timereceived      int           `json:"timereceived"`
+	Bip125Replaceable string        `json:"bip125-replaceable"`
+	Details           []struct {
+		Address   string  `json:"address,omitempty"`
+		Category  string  `json:"category"`
+		Amount    float64 `json:"amount"`
+		Vout      int     `json:"vout"`
+		Fee       float64 `json:"fee"`
+		Abandoned bool    `json:"abandoned"`
+	} `json:"details"`
+	Hex string `json:"hex"`
+}
+
+type GetTransactionResponse struct {
+	Result GetTransactionResponseResult `json:"result"`
+	RPCResponse
+}
+
+func NewGetTransactionResponse(bts []byte) (*GetTransactionResponse, error) {
+	resp := new(GetTransactionResponse)
+	err := json.Unmarshal(bts, resp)
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
+
+func (b *BitcoinService) getTransaction(trxid string) (*GetTransactionResponseResult, error) {
+	req := b.NewRPCRequest().WithMethod(GET_TRANSACTION)
+	if req == nil {
+		return nil, fmt.Errorf("NewRPCRequest %s is nil", GET_TRANSACTION)
+	}
+
+	bts := getTransactionParams(trxid)
+	if bts == nil {
+		return nil, fmt.Errorf("NewGetTransactionParams is nil")
+	}
+
+	resp, err := req.Call(bts...)
+	if err != nil {
+		return nil, fmt.Errorf("req.Call: %s", err)
+	}
+
+	strinResp := string(resp)
+	if strinResp == "" {
+		return nil, fmt.Errorf("strinResp: %s", err)
+	}
+
+	trx, err := NewGetTransactionResponse(resp)
+	if err != nil {
+		return nil, fmt.Errorf("NewGetTransactionResponse: %s", err)
+	}
+	if trx.Error != nil {
+		return nil, fmt.Errorf("raw.Error: %+v", trx.Error)
+	}
+	if trx.Result.Txid != trxid {
+		return nil, fmt.Errorf("trx.Result.Txid: %s != trxid %s", trx.Result.Txid, trxid)
+	}
+
+	return &trx.Result, nil
+}