Auth: Refactor auth package (#58920)

* Auth: move interface to its own file

* Auth: move to test package

* Auth: move quota consts to auth file

* Auth: move service to impl package

* Auth: move interfaces and related models to auth package

* Auth: Create sub package and type alias to avoid circular dependency

pkg/services/auth/auth.go

@@ -0,0 +1,71 @@
+package auth
+
+import (
+	"context"
+	"errors"
+	"net"
+
+	"github.com/grafana/grafana/pkg/models/usertoken"
+	"github.com/grafana/grafana/pkg/registry"
+	"github.com/grafana/grafana/pkg/services/quota"
+	"github.com/grafana/grafana/pkg/services/user"
+)
+
+const (
+	QuotaTargetSrv quota.TargetSrv = "auth"
+	QuotaTarget    quota.Target    = "session"
+)
+
+type ActiveTokenService interface {
+	ActiveTokenCount(ctx context.Context, _ *quota.ScopeParameters) (*quota.Map, error)
+}
+
+// Typed errors
+var (
+	ErrUserTokenNotFound = errors.New("user token not found")
+)
+
+type TokenRevokedError = usertoken.TokenRevokedError
+
+// CreateTokenErr represents a token creation error; used in Enterprise
+type CreateTokenErr struct {
+	StatusCode  int
+	InternalErr error
+	ExternalErr string
+}
+
+func (e *CreateTokenErr) Error() string {
+	if e.InternalErr != nil {
+		return e.InternalErr.Error()
+	}
+	return "failed to create token"
+}
+
+type TokenExpiredError struct {
+	UserID  int64
+	TokenID int64
+}
+
+func (e *TokenExpiredError) Error() string { return "user token expired" }
+
+type UserToken = usertoken.UserToken
+
+type RevokeAuthTokenCmd struct {
+	AuthTokenId int64 `json:"authTokenId"`
+}
+
+// UserTokenService are used for generating and validating user tokens
+type UserTokenService interface {
+	CreateToken(ctx context.Context, user *user.User, clientIP net.IP, userAgent string) (*UserToken, error)
+	LookupToken(ctx context.Context, unhashedToken string) (*UserToken, error)
+	TryRotateToken(ctx context.Context, token *UserToken, clientIP net.IP, userAgent string) (bool, error)
+	RevokeToken(ctx context.Context, token *UserToken, soft bool) error
+	RevokeAllUserTokens(ctx context.Context, userId int64) error
+	GetUserToken(ctx context.Context, userId, userTokenId int64) (*UserToken, error)
+	GetUserTokens(ctx context.Context, userId int64) ([]*UserToken, error)
+	GetUserRevokedTokens(ctx context.Context, userId int64) ([]*UserToken, error)
+}
+
+type UserTokenBackgroundService interface {
+	registry.BackgroundService
+}