From 5cc4d2bab280bd640700516f987dd46e67c782d2 Mon Sep 17 00:00:00 2001
From: Niklas Kapelle <niklas@kapelle.org>
Date: Sat, 7 Mar 2026 00:26:33 +0100
Subject: [PATCH] save instances in map & internalized save path

---
 src/main.rs                  | 11 ++---------
 src/types/modded_instance.rs | 17 +++++++++++------
 src/types/root_config.rs     | 14 +++++---------
 3 files changed, 18 insertions(+), 24 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 5a46a24..1d24936 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -41,8 +41,7 @@ fn command_add(root_config: &RootConfig, instance_id: &str, mod_id: &str) -> any
 
     insert_mod_to_instance(&mut instance, mod_to_install, &files, 0);
 
-    let path = &root_config.get_instance_config(instance_id).unwrap().path;
-    instance.save_to_file(path)?;
+    instance.save_to_file()?;
 
     Ok(())
 }
@@ -55,13 +54,7 @@ fn command_order(root_config: &RootConfig, instance_id: &str) -> anyhow::Result<
 
     instance.set_load_order(new_load_order);
 
-    instance.save_to_file(
-        root_config
-            .get_instance_config(instance_id)
-            .ok_or(anyhow!("Failed to find instance"))?
-            .path
-            .clone(),
-    )?;
+    instance.save_to_file()?;
 
     Ok(())
 }
diff --git a/src/types/modded_instance.rs b/src/types/modded_instance.rs
index 07fe86a..622750b 100644
--- a/src/types/modded_instance.rs
+++ b/src/types/modded_instance.rs
@@ -1,7 +1,7 @@
 use std::{
     fs::{self, read_to_string},
     io::Write,
-    path::Path,
+    path::{Path, PathBuf},
 };
 
 use log::trace;
@@ -22,6 +22,9 @@ pub struct ModdedInstance {
 
     #[serde(default)]
     game_file_overrides: Vec<Link>,
+
+    #[serde(skip)]
+    self_path: PathBuf,
 }
 
 impl ModdedInstance {
@@ -31,20 +34,22 @@ impl ModdedInstance {
             path.as_ref().to_string_lossy()
         );
 
-        let data = read_to_string(path)?;
-        let config = toml::from_str(&data)?;
+        let data = read_to_string(&path)?;
+        let mut config: Self = toml::from_str(&data)?;
+
+        config.self_path = path.as_ref().to_owned();
 
         Ok(config)
     }
 
-    pub fn save_to_file(&self, path: impl AsRef<Path>) -> Result<(), ConfigReadWriteError> {
+    pub fn save_to_file(&self) -> Result<(), ConfigReadWriteError> {
         trace!(
             "Saving ModdedInstance to: {}",
-            path.as_ref().to_string_lossy()
+            self.self_path.to_string_lossy()
         );
 
         let content = toml::to_string_pretty(self)?;
-        let mut file = fs::File::create(path)?;
+        let mut file = fs::File::create(&self.self_path)?;
         write!(file, "{}", content)?;
         Ok(())
     }
diff --git a/src/types/root_config.rs b/src/types/root_config.rs
index c65a1f3..efbe6f0 100644
--- a/src/types/root_config.rs
+++ b/src/types/root_config.rs
@@ -18,7 +18,7 @@ pub struct RootConfig {
     mod_location: PathBuf,
 
     #[serde(default)]
-    instances: Vec<InstancePointer>,
+    instances: HashMap<String, InstancePointer>,
 
     /// All available mods
     #[serde(default)]
@@ -48,23 +48,19 @@ impl RootConfig {
 
     pub fn load_instance_by_id(&self, id: &str) -> Result<ModdedInstance, ConfigReadWriteError> {
         let conf = self
-            .get_instance_config(id)
+            .instances
+            .get(id)
             .ok_or(ConfigReadWriteError::IDNotFound)?;
 
         ModdedInstance::load_from_file(&conf.path)
     }
 
-    pub fn get_instance_config(&self, id: &str) -> Option<&InstancePointer> {
-        self.instances.iter().find(|e| e.id == id)
-    }
-
     pub fn mod_location(&self) -> &Path {
         &self.mod_location
     }
 }
 
 #[derive(Debug, Clone, Deserialize)]
-pub struct InstancePointer {
-    pub id: String,
-    pub path: PathBuf,
+struct InstancePointer {
+    path: PathBuf,
 }