Fix UEVR missing from available mods

backend/src/installed_game.rs

@@ -162,6 +162,13 @@ fn is_mod_installed(game_id: &str, mod_id: &str) -> bool {
 	false
 }
 
+fn equal_or_none<T: PartialEq>(a: Option<T>, b: Option<T>) -> bool {
+	match (a, b) {
+		(Some(value_a), Some(value_b)) => value_a == value_b,
+		_ => true,
+	}
+}
+
 fn get_available_mods(
 	game_id: &str,
 	mod_loaders: &mod_loader::DataMap,
@@ -171,8 +178,10 @@ fn get_available_mods(
 		.iter()
 		.flat_map(|(_, mod_loader)| &mod_loader.mods)
 		.filter_map(|game_mod| {
-			if game_mod.engine? == executable.engine.as_ref()?.brand
-				&& game_mod.scripting_backend? == executable.scripting_backend?
+			if equal_or_none(
+				game_mod.engine,
+				executable.engine.as_ref().map(|engine| engine.brand),
+			) && equal_or_none(game_mod.scripting_backend, executable.scripting_backend)
 			{
 				Some((game_mod.id.clone(), is_mod_installed(game_id, &game_mod.id)))
 			} else {

backend/src/steam/owned_games.rs

@@ -3,10 +3,7 @@ use std::{
 	fs,
 };
 
-use lazy_regex::{
-	BytesRegex,
-	Regex,
-};
+use lazy_regex::BytesRegex;
 use steamlocate::SteamDir;
 
 use super::{

frontend/api/bindings.ts

@@ -69,11 +69,11 @@ export type GameExecutable = { path: string; engine: GameEngine | null; architec
 export type ModKind = "Installable" | "Runnable"
 export type AppEvent = "SyncInstalledGames" | "SyncOwnedGames" | "SyncDiscoverGames" | "SyncMods" | "ExecutedSteamCommand"
 export type SteamLaunchOption = { launchId: string; appId: number; description: string | null; executable: string | null; arguments: string | null; appType: string | null; osList: string | null; betaKey: string | null; osArch: string | null }
-export type OwnedGame = { id: string; name: string; installed: boolean; osList: OperatingSystem[]; engine: GameEngineBrand; releaseDate: number; thumbnailUrl: string }
 export type Mod = { id: string; name: string; scriptingBackend: UnityScriptingBackend | null; engine: GameEngineBrand | null; kind: ModKind; path: string }
 export type InstalledGame = { id: string; name: string; discriminator: string | null; steamLaunch: SteamLaunchOption | null; executable: GameExecutable; thumbnailUrl: string | null; availableMods: { [key: string]: boolean } }
 export type ModLoaderData = { id: string; path: string; mods: Mod[] }
 export type UnityScriptingBackend = "Il2Cpp" | "Mono"
 export type GameEngine = { brand: GameEngineBrand; version: GameEngineVersion | null }
 export type Architecture = "X64" | "X86"
+export type OwnedGame = { id: string; name: string; installed: boolean; osList: OperatingSystem[]; engine: GameEngineBrand; releaseDate: number; thumbnailUrl: string }
 export type OperatingSystem = "Linux" | "Windows"