package rpc

import (
	"encoding/json"
	"net/http"
)

const (
	ErrParseError  = -32700
	ErrParseErrorS = "Parse error"

	ErrInvalidRequest  = -32600
	ErrInvalidRequestS = "Invalid Request"

	ErrMethodNotFound  = -32601
	ErrMethodNotFoundS = "Method not found"

	ErrInvalidParams  = -32602
	ErrInvalidParamsS = "Invalid params"

	ErrInternalError  = -32603
	ErrInternalErrorS = "Internal error"

	ErrContextVersion  = -32010
	ErrContextVersionS = "Invalid context version"
)

func WriteRouterError(w http.ResponseWriter, status int, e *RPCError) error {
	w.Header().Set("Content-Type", "application/json")
	w.WriteHeader(status)

	data, err := json.Marshal(e)
	if err != nil {
		return err
	}

	_, err = w.Write(data)
	return err
}