package btc

import (
	"encoding/json"
	"fmt"
)

func NewGetBalanceParams() []interface{} {
	return []interface{}{}
}

type GetBalanceResponse struct {
	Result float64 `json:"result"`
	RPCResponse
}

func NewGetBalanceResponse(bts []byte) (*GetBalanceResponse, error) {
	resp := new(GetBalanceResponse)
	err := json.Unmarshal(bts, resp)
	if err != nil {
		return nil, err
	}

	return resp, nil
}

func (b *BitcoinService) GetBalance() (float64, error) {
	req := b.NewRPCRequest().WithMethod(GET_BALANCE)
	if req == nil {
		return 0.0, fmt.Errorf("NewRPCRequest %s is nil", GET_BALANCE)
	}

	resp, err := req.Call(NewGetBalanceParams()...)
	if err != nil {
		return 0.0, fmt.Errorf("req.Call: %s", err)
	}

	strinResp := string(resp)
	if strinResp == "" {
		return 0.0, fmt.Errorf("strinResp: %s", err)
	}

	trx, err := NewGetBalanceResponse(resp)
	if err != nil {
		return 0.0, fmt.Errorf("NewGetBalanceResponse: %s", err)
	}
	if trx.Error != nil {
		return 0.0, fmt.Errorf("raw.Error: %+v", trx.Error)
	}

	return trx.Result, nil
}