Add FindByAny, Stringer for users

pkg/auth/identity.go

@@ -1,5 +1,9 @@
 package auth
 
+import (
+	"fmt"
+)
+
 type (
 	Identity struct {
 		id       uint64
@@ -30,6 +34,10 @@ func (i Identity) Valid() bool {
 	return i.id > 0
 }
 
+func (i Identity) String() string {
+	return fmt.Sprintf("%d", i.id)
+}
+
 func NewSuperUserIdentity() *Identity {
 	return NewIdentity(superUserID)
 }

pkg/auth/interfaces.go

@@ -9,6 +9,7 @@ type (
 		Identity() uint64
 		Roles() []uint64
 		Valid() bool
+		String() string
 	}
 
 	TokenEncoder interface {

system/service/user.go

@@ -3,6 +3,8 @@ package service
 import (
 	"context"
 	"io"
+	"strconv"
+	"strings"
 
 	"github.com/pkg/errors"
 	"github.com/titpetric/factory"
@@ -79,6 +81,7 @@ type (
 		FindByEmail(email string) (*types.User, error)
 		FindByHandle(handle string) (*types.User, error)
 		FindByID(id uint64) (*types.User, error)
+		FindByAny(any string) (*types.User, error)
 		Find(types.UserFilter) (types.UserSet, types.UserFilter, error)
 
 		Create(input *types.User) (*types.User, error)
@@ -154,6 +157,20 @@ func (svc user) FindByHandle(handle string) (*types.User, error) {
 	return svc.proc(svc.user.FindByHandle(handle))
 }
 
+func (svc user) FindByAny(any string) (*types.User, error) {
+	return svc.proc(func() (*types.User, error) {
+		if id, _ := strconv.ParseUint(any, 10, 64); id > 0 {
+			return svc.user.FindByID(id)
+		}
+
+		if strings.Contains(any, "@") {
+			return svc.user.FindByEmail(any)
+		}
+
+		return svc.user.FindByHandle(any)
+	}())
+}
+
 func (svc user) proc(u *types.User, err error) (*types.User, error) {
 	if err != nil {
 		return nil, err

system/types/user.go

@@ -3,6 +3,7 @@ package types
 import (
 	"database/sql/driver"
 	"encoding/json"
+	"fmt"
 	"time"
 
 	"github.com/pkg/errors"
@@ -89,6 +90,10 @@ const (
 	BotUser    UserKind = "bot"
 )
 
+func (u User) String() string {
+	return fmt.Sprintf("%d", u.ID)
+}
+
 func (u *User) Valid() bool {
 	return u.ID > 0 && u.SuspendedAt == nil && u.DeletedAt == nil
 }