refactor: Prepare code for installing older Northstar versions (#305)

* refactor: Rename function

Rename `install_northstar` to `install_latest_northstar` to better
indicate what it does

* refactor: Have updater just call installer

* refactor: Move package selection to calling func

During installation, package should already be known so get package
name earlier as opposed to passing `Option<T>`

* chore: Format fix

* refactor: Allow passing NS version to install

If no version is passed, fallback is to latest

* refactor: Rename function

Back to `install_northstar` from `install_latest_northstar` as the
function can now install any Northstar version

* refactor: Do a borrow instead of clone

* refactor: Use `map` and `unwrap_or`
instead of `match`

2 files changed, 21 insertions, 21 deletions

diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 9a05e1db..b5a5a5e9 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -279,19 +279,9 @@ async fn do_install(
 pub async fn install_northstar(
     window: tauri::Window,
     game_path: &str,
-    northstar_package_name: Option<String>,
+    northstar_package_name: String,
+    version_number: Option<String>,
 ) -> Result<String, String> {
-    let northstar_package_name = match northstar_package_name {
-        Some(northstar_package_name) => {
-            if northstar_package_name.len() <= 1 {
-                "Northstar".to_string()
-            } else {
-                northstar_package_name
-            }
-        }
-        None => "Northstar".to_string(),
-    };
-
     let index = thermite::api::get_package_index().unwrap().to_vec();
     let nmod = index
         .iter()
@@ -299,11 +289,14 @@ pub async fn install_northstar(
         .ok_or_else(|| panic!("Couldn't find Northstar on thunderstore???"))
         .unwrap();
 
+    // Use passed version or latest if no version was passed
+    let version = version_number.as_ref().unwrap_or(&nmod.latest);
+
     log::info!("Install path \"{}\"", game_path);
 
     match do_install(
         window,
-        nmod.versions.get(&nmod.latest).unwrap(),
+        nmod.versions.get(version).unwrap(),
         std::path::Path::new(game_path),
     )
     .await
diff --git a/src-tauri/src/main.rs b/src-tauri/src/main.rs
index 2e4b3370..1ba12474 100644
--- a/src-tauri/src/main.rs
+++ b/src-tauri/src/main.rs
@@ -327,9 +327,22 @@ async fn install_northstar_caller(
     window: tauri::Window,
     game_path: String,
     northstar_package_name: Option<String>,
+    version_number: Option<String>,
 ) -> Result<bool, String> {
     log::info!("Running");
-    match install_northstar(window, &game_path, northstar_package_name).await {
+
+    // Get Northstar package name (`Northstar` vs `NorthstarReleaseCandidate`)
+    let northstar_package_name = northstar_package_name
+        .map(|name| {
+            if name.len() <= 1 {
+                "Northstar".to_string()
+            } else {
+                name
+            }
+        })
+        .unwrap_or("Northstar".to_string());
+
+    match install_northstar(window, &game_path, northstar_package_name, version_number).await {
         Ok(_) => Ok(true),
         Err(err) => {
             log::error!("{}", err);
@@ -348,13 +361,7 @@ async fn update_northstar_caller(
     log::info!("Updating Northstar");
 
     // Simply re-run install with up-to-date version for upate
-    match install_northstar(window, &game_path, northstar_package_name).await {
-        Ok(_) => Ok(true),
-        Err(err) => {
-            log::error!("{}", err);
-            Err(err)
-        }
-    }
+    install_northstar_caller(window, game_path, northstar_package_name, None).await
 }
 
 #[tauri::command]