From 312323fb736867c66e3530edcf800ee8a98532b6 Mon Sep 17 00:00:00 2001
From: DragonFire47 <46509577+DragonFire47@users.noreply.github.com>
Date: Sat, 2 Dec 2023 12:30:08 -0800
Subject: [PATCH] Changed mod hash creation timing to on mod load

---
 PulsarModLoader/MPModChecks/MPModCheckManager.cs | 12 +++---------
 PulsarModLoader/ModManager.cs                    | 13 ++++++++++++-
 PulsarModLoader/PulsarMod.cs                     |  2 ++
 3 files changed, 17 insertions(+), 10 deletions(-)

diff --git a/PulsarModLoader/MPModChecks/MPModCheckManager.cs b/PulsarModLoader/MPModChecks/MPModCheckManager.cs
index 2c35254..9ae81f3 100644
--- a/PulsarModLoader/MPModChecks/MPModCheckManager.cs
+++ b/PulsarModLoader/MPModChecks/MPModCheckManager.cs
@@ -228,24 +228,18 @@ private void UpdateMyModList()
             stopwatch.Start();
             List<PulsarMod> UnprocessedMods = GetMPModList();
             MPModDataBlock[] ProcessedMods = new MPModDataBlock[UnprocessedMods.Count];
-            using (SHA256 MyHasher = SHA256.Create())
-            {
                 for (int i = 0; i < UnprocessedMods.Count; i++)
                 {
                     PulsarMod currentMod = UnprocessedMods[i];
-                    using (FileStream MyStream = File.OpenRead(currentMod.VersionInfo.FileName))
-                    {
-                        MyStream.Position = 0;
-                        byte[] Hash = MyHasher.ComputeHash(MyStream);
-                        ProcessedMods[i] = new MPModDataBlock(currentMod.HarmonyIdentifier(), currentMod.Name, currentMod.Version, (MPRequirement)currentMod.MPRequirements, currentMod.VersionLink, Hash);
-                    }
-                }
+                ProcessedMods[i] = new MPModDataBlock(currentMod.HarmonyIdentifier(), currentMod.Name, currentMod.Version, (MPRequirement)currentMod.MPRequirements, currentMod.VersionLink, currentMod.ModHash);
             }
             MyModList = ProcessedMods;
             stopwatch.Stop();
             Logger.Info("Finished Building MyModList, time elapsted: " + stopwatch.ElapsedMilliseconds.ToString());
         }
 
+
+
         /// <summary>
         /// Serilizes user data into a byte array for network transfer. Does not contain a hash
         /// </summary>
diff --git a/PulsarModLoader/ModManager.cs b/PulsarModLoader/ModManager.cs
index 88f8cdf..98de630 100644
--- a/PulsarModLoader/ModManager.cs
+++ b/PulsarModLoader/ModManager.cs
@@ -9,6 +9,7 @@
 using System.Runtime.CompilerServices;
 using System.IO.Compression;
 using PulsarModLoader.MPModChecks;
+using System.Security.Cryptography;
 
 namespace PulsarModLoader
 {
@@ -337,13 +338,15 @@ public PulsarMod LoadMod(string assemblyPath)
 
             try
             {
-                Assembly asm = Assembly.Load(File.ReadAllBytes(assemblyPath)); // load as bytes to avoid locking the file
+                byte[] FileBytes = File.ReadAllBytes(assemblyPath);
+                Assembly asm = Assembly.Load(FileBytes); // load as bytes to avoid locking the file
 				Type modType = asm.GetTypes().FirstOrDefault(t => t.IsSubclassOf(typeof(PulsarMod)));
 
                 if (modType != null)
                 {
                     PulsarMod mod = Activator.CreateInstance(modType) as PulsarMod;
 					mod.VersionInfo = FileVersionInfo.GetVersionInfo(assemblyPath);
+                    mod.ModHash = GetHash(FileBytes);
 					activeMods.Add(mod.Name, mod);
                     OnModSuccessfullyLoaded?.Invoke(mod.Name, mod);
 
@@ -369,6 +372,14 @@ public PulsarMod LoadMod(string assemblyPath)
             }
         }
 
+        public static byte[] GetHash(byte[] DataForHashing)
+        {
+            using (SHA256 Hasher = SHA256.Create())
+            {
+                return Hasher.ComputeHash(DataForHashing);
+            }
+        }
+
         internal void UnloadMod(PulsarMod mod, ref Harmony harmony)
         {
             activeMods.Remove(mod.Name); // Removes selected mod from activeMods
diff --git a/PulsarModLoader/PulsarMod.cs b/PulsarModLoader/PulsarMod.cs
index 11c0007..8a40082 100644
--- a/PulsarModLoader/PulsarMod.cs
+++ b/PulsarModLoader/PulsarMod.cs
@@ -13,6 +13,8 @@ public abstract class PulsarMod
     {
         internal FileVersionInfo VersionInfo;
 
+        internal byte[] ModHash;
+
         /// <summary>
         /// 
         /// </summary>