gabrielsimmer.com/src/cache/mod.rs

use sqlx::FromRow;
use std::collections::HashMap;
use std::sync::{Mutex, OnceLock};

#[derive(Clone, Debug, FromRow)]
pub struct CachedItem {
    pub content_type: String,
    pub content: String,
    pub cached: i64,
}

/// Determine whether we should actually use the cached item or not.
fn should_use(_item: &CachedItem) -> bool {
    // let current_time: i64 = SystemTime::now()
    //     .duration_since(UNIX_EPOCH)
    //     .expect("SystemTime before UNIX EPOCH!")
    //     .as_secs()
    //     .try_into()
    //     .unwrap();

    // current_time <= (item.cached + (2*60)) && item.content != ""
    true
}

static CACHE: OnceLock<Mutex<HashMap<String, CachedItem>>> = OnceLock::new();

pub async fn get(key: &String) -> Option<CachedItem> {
    let data = CACHE
        .get_or_init(|| Mutex::new(HashMap::new()))
        .lock()
        .unwrap();
    dbg!(&key);
    match data.get(key) {
        Some(c) => {
            if should_use(&c) {
                Some(c.clone())
            } else {
                //let _rm = rm(key.to_string()).await;
                None
            }
        }
        None => None,
    }
}

// async fn rm(key: String) {
//     let mut data = CACHE.get().unwrap().clone();
//     data.remove(&key);
//     let _ = CACHE.set(data);
// }

pub async fn set(key: String, item: CachedItem) {
    let mut data = CACHE
        .get_or_init(|| Mutex::new(HashMap::new()))
        .lock()
        .unwrap();
    data.insert(key, item);
}