From 1e75e23692161ab9afe14df1635919010d595d95 Mon Sep 17 00:00:00 2001
From: Observer KRypt0n_ <suimin.tu.mu.ga.mi@gmail.com>
Date: Sat, 15 Jul 2023 14:49:15 +0200
Subject: [PATCH] feat(genshin): allowed to launch the game without
 `launcher.bat` file

---
 src/games/genshin/game.rs | 33 +++++++++++++++++++++++++--------
 1 file changed, 25 insertions(+), 8 deletions(-)

diff --git a/src/games/genshin/game.rs b/src/games/genshin/game.rs
index 583de3f..bf051b2 100644
--- a/src/games/genshin/game.rs
+++ b/src/games/genshin/game.rs
@@ -50,6 +50,13 @@ pub fn run() -> anyhow::Result<()> {
 
     let config = Config::get()?;
 
+    let game_executable = config.patch.apply
+        .then_some("launcher.bat")
+        .unwrap_or_else(|| match config.launcher.edition {
+            genshin::GameEdition::Global => "GenshinImpact.exe",
+            genshin::GameEdition::China => "YuanShen.exe"
+        });
+
     let game_path = config.game.path.for_edition(config.launcher.edition);
 
     if !game_path.exists() {
@@ -110,13 +117,21 @@ pub fn run() -> anyhow::Result<()> {
             return Err(anyhow::anyhow!("Failed to update FPS unlocker config: {err}"));
         }
 
-        let bat_path = game_path.join("fps_unlocker.bat");
-        let original_bat_path = game_path.join("launcher.bat");
+        let launcher_bat = game_path.join("launcher.bat");
+        let fps_unlocker_bat = game_path.join("fps_unlocker.bat");
 
-        // Generate fpsunlocker.bat from launcher.bat
-        std::fs::write(bat_path, std::fs::read_to_string(original_bat_path)?
-            .replace("start GenshinImpact.exe %*", &format!("start GenshinImpact.exe %*\n\nZ:\ncd \"{}\"\nstart unlocker.exe", unlocker.dir().to_string_lossy()))
-            .replace("start YuanShen.exe %*", &format!("start YuanShen.exe %*\n\nZ:\ncd \"{}\"\nstart unlocker.exe", unlocker.dir().to_string_lossy())))?;
+        // Generate fps_unlocker.bat
+        if config.patch.apply {
+            std::fs::write(fps_unlocker_bat, std::fs::read_to_string(launcher_bat)?
+                .replace("start GenshinImpact.exe %*", &format!("start GenshinImpact.exe %*\n\nZ:\ncd \"{}\"\nstart unlocker.exe", unlocker.dir().to_string_lossy()))
+                .replace("start YuanShen.exe %*", &format!("start YuanShen.exe %*\n\nZ:\ncd \"{}\"\nstart unlocker.exe", unlocker.dir().to_string_lossy())))?;
+        }
+
+        else {
+            // If patch applying is disabled, then game_executable is either GenshinImpact.exe or YuanShen.exe
+            // so we don't need to check it here
+            std::fs::write(fps_unlocker_bat, format!("start {game_executable} %*\n\nZ:\ncd \"{}\"\nstart unlocker.exe", unlocker.dir().to_string_lossy()))?;
+        }
     }
 
     // Generate `config.ini` if environment emulation feature is presented
@@ -152,11 +167,13 @@ pub fn run() -> anyhow::Result<()> {
     }
 
     windows_command += if config.game.enhancements.fps_unlocker.enabled && cfg!(feature = "fps-unlocker") {
-        "fps_unlocker.bat "
+        "fps_unlocker.bat"
     } else {
-        "launcher.bat "
+        game_executable
     };
 
+    windows_command += " ";
+
     if config.game.wine.borderless {
         windows_command += "-screen-fullscreen 0 -popupwindow ";
     }