package main

import (
	"github.com/pkg/errors"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/status"
)

// Errors
var (
	ErrInvalidServer      = errors.New("server is invalid")
	ErrInvalidRequest     = errors.New("request is invalid")
	ErrInvalidParameter   = errors.New("parameter is invalid")
	ErrTestNotImplemented = errors.New("test path not implemented")

	ErrMultiple  = errors.New("Multiple errors in transaction")
	ErrEmptyFrom = errors.New("from must not be empty")
	ErrInvalidTo = errors.New("to must be a valid 32-byte address")
	ErrEmptyName = errors.New("name must not be empty")
)

func toStatusError(src error) error {
	/*__*/ if src == nil {
		return src
	} else if _, ok := src.(interface{ GRPCStatus() *status.Status }); ok {
		return src
	} else {
		switch errors.Cause(src) {
		/////////////////////////////////////////////////////////////////////
		default:
			return src
		case ErrInvalidServer:
			fallthrough
		case ErrInvalidRequest:
			return status.Error(codes.Internal, src.Error())
		case ErrInvalidParameter:
			return status.Error(codes.InvalidArgument, src.Error())
		case ErrTestNotImplemented:
			return status.Error(codes.Unimplemented, src.Error())

		/////////////////////////////////////////////////////////////////////
		case ErrEmptyName:
			fallthrough
		case ErrEmptyFrom:
			fallthrough
		case ErrInvalidTo:
			return status.Error(codes.InvalidArgument, src.Error())
		case ErrMultiple:
			return status.Error(codes.InvalidArgument, src.Error())
		}
	}
}