//! The main KV store

use std::collections::HashMap;

/// A log-based Key-Value store.
///
/// The store is a dynamic "view" generated by replaying entries.
pub struct Store {
    data: HashMap<Vec<u8>, Vec<u8>>,
}

impl Store {
    /// Create a new empty store.
    pub fn new() -> Self {
        Self {
            data: HashMap::new(),
        }
    }

    /// Get a value by key.
    pub fn get(&self, key: &[u8]) -> Option<&[u8]> {
        self.data.get(key).map(|v| v.as_slice())
    }

    /// Set a value (this would normally go through the log).
    pub fn set(&mut self, key: Vec<u8>, value: Vec<u8>) {
        self.data.insert(key, value);
    }
}

impl Default for Store {
    fn default() -> Self {
        Self::new()
    }
}