package protocol

import "errors"

// ErrorCode is type when used to communicate with WebSocket RPC
type ErrorCode int

const (
	// EParse is error code that is invalid json
	EParse ErrorCode = -32700
	// EInvalidReq is error code that is invalid request
	EInvalidReq ErrorCode = -32600
	// ENotFoundMethod is error code that is not exist method
	ENotFoundMethod ErrorCode = -32601
	// EInvalidParams is error code that is invalid parameters
	EInvalidParams ErrorCode = -32602
	// EInternal is error code that is internel error
	EInternal ErrorCode = -32603
	// EServer is error code that is server error
	EServer ErrorCode = -32000
)

var ErrNullResult = errors.New("result is null")

// Error is error struct when used to communicate with WebSocket RPC
type Error struct {
	Code    ErrorCode   `json:"code"`
	Message string      `json:"message"`
	Data    interface{} `json:"data,omitempty"`
}