From 695858088486a1a9d5fe9a74f79f1cad95a20b14 Mon Sep 17 00:00:00 2001
From: GeckoEidechse <gecko.eidechse+git@pm.me>
Date: Wed, 19 Jul 2023 01:09:17 +0200
Subject: feat: Delete packages installed in legacy mode on upgrade

---
 src-tauri/src/mod_management/legacy.rs | 36 ++++++++++++++++++++++++++++++++++
 src-tauri/src/mod_management/mod.rs    |  8 ++++++++
 2 files changed, 44 insertions(+)

diff --git a/src-tauri/src/mod_management/legacy.rs b/src-tauri/src/mod_management/legacy.rs
index 568aadfc..4e1d81ff 100644
--- a/src-tauri/src/mod_management/legacy.rs
+++ b/src-tauri/src/mod_management/legacy.rs
@@ -126,6 +126,42 @@ pub fn parse_installed_mods(
     Ok(mods)
 }
 
+/// Deletes all legacy packages that match in author and mod name
+/// regardless of version
+pub fn delete_legacy_package_install(
+    thunderstore_mod_string: &str,
+    game_install: &GameInstall,
+) -> Result<(), String> {
+    let thunderstore_mod_string: ParsedThunderstoreModString =
+        thunderstore_mod_string.parse().unwrap();
+    let found_installed_legacy_mods = match parse_installed_mods(&game_install) {
+        Ok(res) => res,
+        Err(err) => return Err(err.to_string()),
+    };
+
+    for legacy_mod in found_installed_legacy_mods {
+        if legacy_mod.thunderstore_mod_string.is_none() {
+            continue; // Not a thunderstore mod
+        }
+
+        let current_mod_ts_string: ParsedThunderstoreModString = legacy_mod
+            .clone()
+            .thunderstore_mod_string
+            .unwrap()
+            .parse()
+            .unwrap();
+
+        if thunderstore_mod_string.author_name == current_mod_ts_string.author_name
+            && thunderstore_mod_string.mod_name == current_mod_ts_string.mod_name
+        {
+            // They match, delete
+            delete_mod_folder(&legacy_mod.directory)?;
+        }
+    }
+
+    Ok(())
+}
+
 /// Deletes all NorthstarMods related to a Thunderstore mod
 pub fn delete_thunderstore_mod(
     game_install: GameInstall,
diff --git a/src-tauri/src/mod_management/mod.rs b/src-tauri/src/mod_management/mod.rs
index a1a8cdf0..e1939e08 100644
--- a/src-tauri/src/mod_management/mod.rs
+++ b/src-tauri/src/mod_management/mod.rs
@@ -556,6 +556,14 @@ pub async fn fc_download_mod_and_install(
     };
 
     // Successful package install
+    match legacy::delete_legacy_package_install(thunderstore_mod_string, game_install) {
+        Ok(()) => (),
+        Err(err) => {
+            log::warn!("Failed deleting legacy versions due to: {}", err);
+            todo!(); // should we do something on error or ignore?
+        }
+    };
+
     match delete_older_versions(thunderstore_mod_string, game_install) {
         Ok(()) => (),
         Err(err) => {
-- 
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