From d1e67703ebaffcb9ad7036c2a32e41be0c8296ef Mon Sep 17 00:00:00 2001
From: EnderKill98 <no@mail.tld>
Date: Sat, 2 Aug 2025 02:26:34 +0200
Subject: [PATCH] Add best effort for default max stack sizes

---
 azalea-inventory/src/item/mod.rs | 54 ++++++++++++++++++++++++++++++--
 1 file changed, 52 insertions(+), 2 deletions(-)

diff --git a/azalea-inventory/src/item/mod.rs b/azalea-inventory/src/item/mod.rs
index bbff2d50..927c9511 100644
--- a/azalea-inventory/src/item/mod.rs
+++ b/azalea-inventory/src/item/mod.rs
@@ -19,7 +19,57 @@ pub trait MaxStackSizeExt {
 
 impl MaxStackSizeExt for azalea_registry::Item {
     fn max_stack_size(&self) -> i32 {
-        // TODO: have the properties for every item defined somewhere
-        64
+        // Best effort, might have forgotten some niche item
+        let name = self.to_string();
+        if [
+            Self::ShulkerBox,
+            Self::Potion,
+            Self::SplashPotion,
+            Self::LingeringPotion,
+            Self::AxolotlBucket,
+            Self::Minecart,
+            Self::Trident,
+            Self::Mace,
+            Self::Bow,
+            Self::Crossbow,
+            Self::TotemOfUndying,
+            Self::Shield,
+            Self::Cake,
+            Self::Shears,
+            Self::Bundle,
+            Self::EnchantedBook,
+            Self::DebugStick,
+            Self::WritableBook,
+        ]
+            .contains(self)
+            || name.ends_with("_shulker_box")
+            || name.ends_with("_bucket")
+            || name.ends_with("_pattern")
+            || name.ends_with("_minecart")
+            || name.ends_with("_boat")
+            || name.ends_with("_helmet")
+            || name.ends_with("_leggings")
+            || name.ends_with("_chestplate")
+            || name.ends_with("_boots")
+            || name.ends_with("_sword")
+            || name.ends_with("_axe")
+            || name.ends_with("_pickaxe")
+            || name.ends_with("_shovel")
+            || name.ends_with("_hoe")
+            || name.ends_with("_horse_armor")
+            || name.ends_with("_soup")
+            || name.ends_with("_bundle")
+            || name.contains("music_disc_")
+            || name.contains("_bed")
+        {
+            1
+        } else if [Self::Bucket, Self::EnderPearl, Self::Snowball, Self::Egg, Self::ArmorStand, Self::WrittenBook].contains(self)
+            || name.ends_with("_sign")
+            || name.ends_with("_banner")
+        {
+            16
+        } else {
+            64
+        }
     }
 }