portal/src/aggregates/project.rs

//! Project submissions (`record_as: projects` - absorbs what used to be
//! called "inquiries"). A visitor submits a project idea plus who it's
//! for (org/contact details, captured as plain payload fields - no
//! separate Organization aggregate yet, see the event-sourcing plan).
//! `Open -> Accepted | Declined` - a real b2b-pipeline pair of terminal
//! states rather than the old generic `Handled`.
use super::AggregateKind;

#[derive(Copy, Clone, PartialEq, Eq, Debug)]
pub enum State {
    Open,
    Accepted,
    Declined,
}

impl AggregateKind for State {
    const AGGREGATE_TYPE: &'static str = "project";
    const INITIAL_STATE: Self = State::Open;

    fn from_event_type(event_type: &str) -> Option<Self> {
        match event_type {
            "submitted" => Some(State::Open),
            "accepted" => Some(State::Accepted),
            "declined" => Some(State::Declined),
            _ => None,
        }
    }

    fn event_type(self) -> &'static str {
        match self {
            State::Open => "submitted",
            State::Accepted => "accepted",
            State::Declined => "declined",
        }
    }

    fn allowed(self) -> &'static [Self] {
        match self {
            State::Open => &[State::Accepted, State::Declined],
            State::Accepted | State::Declined => &[],
        }
    }
}