feat: set up project

internal/services/btc/rpc_request.go

@@ -0,0 +1,92 @@
+package btc
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"log"
+	"net/http"
+)
+
+const (
+	GET_BLOCK              RPCMethod = "getblock"
+	GET_BALANCE            RPCMethod = "getbalance"
+	GET_RAW_TRANSACTION    RPCMethod = "getrawtransaction"
+	GET_TRANSACTION        RPCMethod = "gettransaction"
+	DECODE_RAW_TRANSACTION RPCMethod = "decoderawtransaction"
+	LIST_ADDRESS_GROUPINGS RPCMethod = "listaddressgroupings"
+)
+
+type RPCMethod string
+
+type RPCRequest struct {
+	host    string
+	auth    string
+	Jsonrpc string        `json:"jsonrpc"`
+	ID      string        `json:"id"`
+	Method  RPCMethod     `json:"method"`
+	Params  []interface{} `json:"params,omitempty"`
+	debug   bool
+}
+
+func (b *BitcoinService) NewRPCRequest() *RPCRequest {
+	return &RPCRequest{
+		host:    b.host,
+		auth:    b.auth,
+		Jsonrpc: "1.0",
+		ID:      "curltest",
+		Params:  make([]interface{}, 0),
+	}
+}
+
+func (r *RPCRequest) WithDebug() *RPCRequest {
+	r.debug = true
+	return r
+}
+
+func (r *RPCRequest) WithMethod(method RPCMethod) *RPCRequest {
+	r.Method = method
+	return r
+}
+
+func (r *RPCRequest) Call(params ...interface{}) ([]byte, error) {
+	if len(params) > 0 && params != nil {
+		r.Params = append(r.Params, params...)
+	}
+	reqBody, err := json.Marshal(r)
+	if err != nil {
+		fmt.Println(err)
+		return nil, err
+	}
+
+	if r.debug {
+		log.Printf("%s \n body: \n%s \n", r.Method, string(reqBody))
+	}
+	payload := bytes.NewReader(reqBody)
+	client := &http.Client{}
+	req, err := http.NewRequest(http.MethodPost, r.host, payload)
+	if err != nil {
+		fmt.Println(err)
+		return nil, err
+	}
+	req.Header.Add("Accept", "text/plain")
+	req.Header.Add("Authorization", r.auth)
+	req.Header.Add("Content-Type", "application/json")
+
+	res, err := client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer res.Body.Close()
+
+	body, err := io.ReadAll(res.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	if r.debug {
+		log.Printf("body response: \n%s \n", body)
+	}
+	return body, nil
+}