use crate::assets::asset::{Asset, AssetId};
use serde::{Deserialize, Serialize};
use std::any::Any;
pub type Meta = Option<Box<dyn Any + Send + Sync>>;
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum AssetVariant {
Id(AssetId),
Path(String),
}
impl From<AssetId> for AssetVariant {
fn from(id: AssetId) -> Self {
AssetVariant::Id(id)
}
}
impl From<&str> for AssetVariant {
fn from(path: &str) -> Self {
AssetVariant::Path(path.to_owned())
}
}
impl From<String> for AssetVariant {
fn from(path: String) -> Self {
AssetVariant::Path(path)
}
}
impl From<&String> for AssetVariant {
fn from(path: &String) -> Self {
AssetVariant::Path(path.clone())
}
}
pub enum AssetLoadResult {
Error(String),
Data(Box<dyn Any + Send + Sync>),
Yield(Meta, Vec<(String, String)>),
}
pub trait AssetProtocol: Send + Sync {
fn name(&self) -> &str;
fn on_load_with_path(&mut self, _path: &str, data: Vec<u8>) -> AssetLoadResult {
self.on_load(data)
}
fn on_load(&mut self, data: Vec<u8>) -> AssetLoadResult;
fn on_resume(&mut self, _meta: Meta, _list: &[(&str, &Asset)]) -> AssetLoadResult {
AssetLoadResult::Error(format!(
"Protocol {} does not implement `on_resume` method!",
std::any::type_name::<Self>()
))
}
fn on_unload(&mut self, _asset: &Asset) -> Option<Vec<AssetVariant>> {
None
}
fn on_register(&mut self) {}
fn on_unregister(&mut self) {}
}