use identity::Identity as Id;
use std::collections::BTreeSet;

/// A schema format backing a recipe set
pub struct Schema<I, W>
where
    I: Ingredient,
    W: Workstep,
{
    /// Set of ingredients present in a recipe
    pub ingredients: BTreeSet<I>,
    /// Set of allowed work-steps in a recipe
    pub worksteps: BTreeSet<W>,
}

/// A string-tagged ingredient in a recipe
pub trait Ingredient {
    /// Get a human readable ingredient name
    fn name(&self) -> String;
    /// Get the ingredient slug
    fn slug(&self) -> String;
    /// A machine-efficient, random ID
    fn id(&self) -> Id;
}

/// An execution step
pub trait Workstep {
    /// Get a human readable workstep name
    fn name(&self) -> String;
    /// Get the workstep slug
    fn slug(&self) -> String;
    /// Get the human readable workstep description
    fn description(&self) -> String;
    /// A machine-efficient, random ID
    fn id(&self) -> Id;
    /// Execute some custom code for the step
    fn run(&self) -> Option<()>;
}