Function validate_mutation_subject

atomic-teams/src/grant.rs:33–40

Ensure a grant mutation targets a concrete user or team. `Everyone` is emitted by Storage when listing public grants, but the mutation endpoints require a non-null user or team UUID.

(subject_type: GrantSubjectType)

/// `Everyone` is emitted by Storage when listing public grants, but the
/// mutation endpoints require a non-null user or team UUID.
fn validate_mutation_subject(subject_type: GrantSubjectType) -> TeamsResult<()> {
    match subject_type {
        GrantSubjectType::User | GrantSubjectType::Team => Ok(()),
        GrantSubjectType::Everyone => Err(TeamsError::InvalidInput(
            "grant mutations require a user or team subject".to_string(),
        )),
    }
}

// ---------------------------------------------------------------------------
// Organization grants