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//! Allows use of the Web Storage API / local storage.
//!
//! # References
//! * [MDN docs](https://developer.mozilla.org/en-US/docs/Web/API/Storage)
//! * [web-sys docs](https://rustwasm.github.io/wasm-bindgen/api/web_sys/struct.Storage.html)
//! * [Example syntax](https://github.com/rustwasm/wasm-bindgen/blob/master/examples/todomvc/src/store.rs)

extern crate serde;
extern crate serde_json;

pub fn get_storage() -> Option<web_sys::Storage> {
    let window = web_sys::window().unwrap();

    match window.local_storage() {
        Ok(Some(local_storage)) => Some(local_storage),
        Err(_) => None,
        Ok(None) => None,
    }
}

/// Create a new store, from a serializable data structure.
pub fn store_data<T>(storage: &web_sys::Storage, name: &str, data: &T)
where
    T: serde::Serialize,
{
    let serialized = serde_json::to_string(&data).unwrap();
    storage.set_item(name, &serialized).unwrap();
}