use crate::packets::Resource;
use anyhow::Result;
use redb::{Database, TableDefinition};
use std::path::Path;

const T_ENTRIES: TableDefinition<u128, &[u8]> = TableDefinition::new("e");

pub struct ResourceStore {
    db: Database,
}
impl ResourceStore {
    pub fn new(path: &Path) -> Result<Self> {
        Ok(Self {
            db: Database::create(path)?,
        })
    }
    pub fn get(&self, key: Resource) -> Result<Option<Vec<u8>>> {
        let txn = self.db.begin_read()?;
        let ent = txn.open_table(T_ENTRIES)?;
        match ent.get(key.0)? {
            Some(x) => Ok(Some(x.value().to_vec())),
            None => Ok(None),
        }
    }
    pub fn set(&self, key: Resource, value: &[u8]) -> Result<()> {
        let txn = self.db.begin_write()?;
        let mut ent = txn.open_table(T_ENTRIES)?;
        ent.insert(key.0, value)?;
        drop(ent);
        txn.commit()?;
        Ok(())
    }
}