Implement PackageLoader, just for available packages right now

1 files changed, 47 insertions, 0 deletions

diff --git a/src/background_loader.rs b/src/background_loader.rs
new file mode 100644
index 0000000..ea9d331
--- /dev/null
+++ b/src/background_loader.rs
@@ -0,0 +1,47 @@
+use std::{
+    sync::mpsc::{Receiver, channel},
+    thread,
+};
+
+use crate::gentoo::{package::Package, portage_loader::load_available_packages};
+
+pub enum LoaderMessage {
+    Loading,
+    Complete(Vec<Package>),
+    Error(String),
+}
+
+#[derive(Debug)]
+pub struct PackageLoader {
+    receiver: Receiver<LoaderMessage>,
+    thread_handle: thread::JoinHandle<()>,
+}
+
+impl PackageLoader {
+    pub fn spawn() -> Self {
+        let (tx, rx) = channel();
+        let thread_handle = thread::spawn(move || {
+            let _ = tx.send(LoaderMessage::Loading);
+
+            match load_available_packages() {
+                Ok(packages) => {
+                    let _ = tx.send(LoaderMessage::Complete(packages));
+                }
+                Err(e) => {
+                    let _ = tx.send(LoaderMessage::Error(e.to_string()));
+                }
+            }
+        });
+
+        PackageLoader {
+            receiver: rx,
+            thread_handle,
+        }
+    }
+
+    pub fn try_recv(&self) -> Option<LoaderMessage> {
+        self.receiver.try_recv().ok()
+    }
+
+    //TODO: join thread back to main thread after packages were loaded
+}