From a24dd4b81ad8f87d34f1c55efa17cd3840d2ac5e Mon Sep 17 00:00:00 2001
From: metamuffin <metamuffin@disroot.org>
Date: Mon, 16 Sep 2024 15:33:52 +0200
Subject: generate index for passive recipes by input for faster lookup

---
 server/src/data/index.rs | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 server/src/data/index.rs

(limited to 'server/src/data/index.rs')

diff --git a/server/src/data/index.rs b/server/src/data/index.rs
new file mode 100644
index 00000000..1c206d83
--- /dev/null
+++ b/server/src/data/index.rs
@@ -0,0 +1,25 @@
+use hurrycurry_protocol::{Gamedata, ItemIndex, Recipe, RecipeIndex};
+use std::collections::HashMap;
+
+#[derive(Debug, Default)]
+pub struct GamedataIndex {
+    pub recipe_passive_by_input: HashMap<ItemIndex, Vec<RecipeIndex>>,
+}
+
+impl GamedataIndex {
+    pub fn update(&mut self, data: &Gamedata) {
+        self.recipe_passive_by_input.clear();
+
+        for (ri, r) in data.recipes() {
+            match r {
+                Recipe::Passive { input, .. } => {
+                    self.recipe_passive_by_input
+                        .entry(*input)
+                        .or_default()
+                        .push(ri);
+                }
+                _ => (),
+            }
+        }
+    }
+}
-- 
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