caretta-sync-core 0.0.2

A local-first application framework for lazy person
Documentation 
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#[cfg(any(test, feature = "test"))]
use tempfile::TempDir;
use tokio::sync::OnceCell;

use crate::config::Config;

pub static CONFIG: GlobalConfig = GlobalConfig::const_new();
pub struct GlobalConfig {
    inner: OnceCell<Config>,
}

impl GlobalConfig {
    pub const fn const_new() -> Self {
        Self {
            inner: OnceCell::const_new(),
        }
    }
    pub async fn get_or_init<T>(&'static self, config: Config) -> &'static Config
    where
        T: Into<Config>,
    {
        self.inner.get_or_init(|| async { config }).await
    }
    pub async fn get_or_try_init<T, E>(
        &'static self,
        config: T,
    ) -> Result<&'static Config, <T as TryInto<Config>>::Error>
    where
        T: TryInto<Config>,
    {
        self.inner
            .get_or_try_init(|| async { config.try_into() })
            .await
    }
    pub fn get(&'static self) -> Option<&'static Config> {
        self.inner.get()
    }
    pub fn get_unchecked(&'static self) -> &'static Config {
        self.get().expect("Config must be initialized before use!")
    }
}