//! `config update` subcommand

mod v20240701;

use crate::{
    command::config::{next_revision, RevisionCheckError},
    config::Revision,
};

#[derive(thiserror::Error, Debug)]
pub(crate) enum UpdateError {
    #[error(transparent)]
    UnknownRevision(#[from] RevisionCheckError),
    #[error(transparent)]
    V20240701(#[from] v20240701::Error),
}

async fn update_to_latest() -> Result<(), UpdateError> {
    if next_revision()?.is_none() {
        println!("Your config files are already up-to-date! (as of this fishctl release)");
        return Ok(());
    }

    while let Some(next_revision) = next_revision()? {
        run_impl(next_revision).await?;
    }
    Ok(())
}

async fn run_impl(revision: Revision) -> Result<(), UpdateError> {
    match revision {
        Revision::V20240701 => v20240701::run().await?,
    }
    Ok(())
}

pub(super) async fn run(revision: Option<Revision>) -> Result<(), UpdateError> {
    match revision {
        Some(revision) => run_impl(revision).await,
        None => update_to_latest().await,
    }
}