From 08d066c7c6c7b99076efb5217474cc5b72df015f Mon Sep 17 00:00:00 2001
From: Jan <sentrycraft123@gmail.com>
Date: Wed, 2 Aug 2023 12:24:57 +0200
Subject: Extract Northstar into temporary location before installing (#456)

This is done in order to enable future changes
---
 src-tauri/src/northstar/install.rs | 44 +++++++++++++++++++++++++++-----------
 src-tauri/src/util.rs              | 39 +++++++++++++++++++++++++++++++++
 2 files changed, 70 insertions(+), 13 deletions(-)

diff --git a/src-tauri/src/northstar/install.rs b/src-tauri/src/northstar/install.rs
index eef6c148..80425c56 100644
--- a/src-tauri/src/northstar/install.rs
+++ b/src-tauri/src/northstar/install.rs
@@ -5,7 +5,10 @@ use std::{cell::RefCell, time::Instant};
 use ts_rs::TS;
 
 use crate::constants::TITANFALL2_STEAM_ID;
-use crate::{util::extract, GameInstall, InstallType};
+use crate::{
+    util::{extract, move_dir_all},
+    GameInstall, InstallType,
+};
 
 #[cfg(target_os = "windows")]
 use crate::platform_specific::windows;
@@ -36,16 +39,13 @@ async fn do_install(
     game_install: GameInstall,
 ) -> Result<()> {
     let filename = format!("northstar-{}.zip", nmod.version);
-    let download_directory = format!(
-        "{}/___flightcore-temp/download-dir/",
-        game_install.game_path
-    );
-
-    log::info!(
-        "Attempting to create temporary directory {}",
-        download_directory
-    );
+    let temp_dir = format!("{}/___flightcore-temp", game_install.game_path);
+    let download_directory = format!("{}/download-dir", temp_dir);
+    let extract_directory = format!("{}/extract-dir", temp_dir);
+
+    log::info!("Attempting to create temporary directory {}", temp_dir);
     std::fs::create_dir_all(download_directory.clone())?;
+    std::fs::create_dir_all(extract_directory.clone())?;
 
     let download_path = format!("{}/{}", download_directory, filename);
     log::info!("Download path: {download_path}");
@@ -94,11 +94,29 @@ async fn do_install(
         .unwrap();
 
     log::info!("Extracting Northstar...");
-    extract(nfile, std::path::Path::new(&game_install.game_path))?;
+    extract(nfile, std::path::Path::new(&extract_directory))?;
+
+    log::info!("Installing Northstar...");
+
+    for entry in std::fs::read_dir(extract_directory).unwrap() {
+        let entry = entry.unwrap();
+        let destination = format!(
+            "{}/{}",
+            game_install.game_path,
+            entry.path().file_name().unwrap().to_str().unwrap()
+        );
+
+        log::info!("Installing {}", entry.path().display());
+        if !entry.file_type().unwrap().is_dir() {
+            std::fs::rename(entry.path(), destination)?;
+        } else {
+            move_dir_all(entry.path(), destination)?;
+        }
+    }
 
     // Delete old copy
-    log::info!("Delete temp folder again");
-    std::fs::remove_dir_all(download_directory).unwrap();
+    log::info!("Delete temporary directory");
+    std::fs::remove_dir_all(temp_dir).unwrap();
 
     log::info!("Done installing Northstar!");
     window
diff --git a/src-tauri/src/util.rs b/src-tauri/src/util.rs
index f1ba6b8a..b21b2208 100644
--- a/src-tauri/src/util.rs
+++ b/src-tauri/src/util.rs
@@ -143,3 +143,42 @@ pub fn check_northstar_running() -> bool {
         || s.processes_by_name("Titanfall2.exe").next().is_some();
     x
 }
+
+/// Copies a folder and all its contents to a new location
+#[allow(dead_code)]
+pub fn copy_dir_all(
+    src: impl AsRef<std::path::Path>,
+    dst: impl AsRef<std::path::Path>,
+) -> std::io::Result<()> {
+    std::fs::create_dir_all(&dst)?;
+    for entry in std::fs::read_dir(src)? {
+        let entry = entry?;
+        let ty = entry.file_type()?;
+        if ty.is_dir() {
+            copy_dir_all(entry.path(), dst.as_ref().join(entry.file_name()))?;
+        } else {
+            std::fs::copy(entry.path(), dst.as_ref().join(entry.file_name()))?;
+        }
+    }
+    Ok(())
+}
+
+/// Moves a folders file structure to a new location
+/// Old folders are not removed
+pub fn move_dir_all(
+    src: impl AsRef<std::path::Path>,
+    dst: impl AsRef<std::path::Path>,
+) -> std::io::Result<()> {
+    std::fs::create_dir_all(&dst)?;
+    for entry in std::fs::read_dir(src)? {
+        let entry = entry?;
+        let ty = entry.file_type()?;
+        if ty.is_dir() {
+            move_dir_all(entry.path(), dst.as_ref().join(entry.file_name()))?;
+            std::fs::remove_dir(entry.path())?;
+        } else {
+            std::fs::rename(entry.path(), dst.as_ref().join(entry.file_name()))?;
+        }
+    }
+    Ok(())
+}
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