/*
  This file is part of go-ethereum

  go-ethereum is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  go-ethereum is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with go-ethereum.  If not, see <http://www.gnu.org/licenses/>.
*/
package rpc

import (
	"encoding/json"
	"fmt"
)

type InvalidTypeError struct {
	method string
	msg    string
}

func (e *InvalidTypeError) Error() string {
	return fmt.Sprintf("invalid type on field %s: %s", e.method, e.msg)
}

func NewInvalidTypeError(method, msg string) *InvalidTypeError {
	return &InvalidTypeError{
		method: method,
		msg:    msg,
	}
}

type InsufficientParamsError struct {
	have int
	want int
}

func (e *InsufficientParamsError) Error() string {
	return fmt.Sprintf("insufficient params, want %d have %d", e.want, e.have)
}

func NewInsufficientParamsError(have int, want int) *InsufficientParamsError {
	return &InsufficientParamsError{
		have: have,
		want: want,
	}
}

type NotImplementedError struct {
	Method string
}

func (e *NotImplementedError) Error() string {
	return fmt.Sprintf("%s method not implemented", e.Method)
}

func NewNotImplementedError(method string) *NotImplementedError {
	return &NotImplementedError{
		Method: method,
	}
}

type DecodeParamError struct {
	err string
}

func (e *DecodeParamError) Error() string {
	return fmt.Sprintf("could not decode, %s", e.err)

}

func NewDecodeParamError(errstr string) error {
	return &DecodeParamError{
		err: errstr,
	}
}

type ValidationError struct {
	ParamName string
	msg       string
}

func (e *ValidationError) Error() string {
	return fmt.Sprintf("%s not valid, %s", e.ParamName, e.msg)
}

func NewValidationError(param string, msg string) error {
	return &ValidationError{
		ParamName: param,
		msg:       msg,
	}
}

type RpcRequest struct {
	Id      interface{}     `json:"id"`
	Jsonrpc string          `json:"jsonrpc"`
	Method  string          `json:"method"`
	Params  json.RawMessage `json:"params"`
}

type RpcSuccessResponse struct {
	Id      interface{} `json:"id"`
	Jsonrpc string      `json:"jsonrpc"`
	Result  interface{} `json:"result"`
}

type RpcErrorResponse struct {
	Id      interface{}     `json:"id"`
	Jsonrpc string          `json:"jsonrpc"`
	Error   *RpcErrorObject `json:"error"`
}

type RpcErrorObject struct {
	Code    int    `json:"code"`
	Message string `json:"message"`
	// Data    interface{} `json:"data"`
}