1 files changed, 149 insertions, 0 deletions
diff --git a/server/tools/src/graph_summary.rs b/server/tools/src/graph_summary.rs
new file mode 100644
index 00000000..be53e768
--- /dev/null
+++ b/server/tools/src/graph_summary.rs
@@ -0,0 +1,149 @@
+/*
+    Hurry Curry! - a game about cooking
+    Copyright (C) 2025 Hurry Curry! Contributors
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, version 3 of the License only.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+*/
+use anyhow::Result;
+use hurrycurry_protocol::{ItemIndex, Recipe, TileIndex};
+use hurrycurry_server::data::DataIndex;
+use std::collections::HashSet;
+
+pub(crate) fn graph_summary() -> Result<()> {
+    let mut index = DataIndex::default();
+    index.reload()?;
+
+    println!("digraph {{");
+
+    let (data, sdata, _) = index.generate("5star")?;
+
+    struct Node {
+        inputs: Vec<ItemIndex>,
+        outputs: Vec<ItemIndex>,
+        tool_item: Option<ItemIndex>,
+        tool_tile: Option<TileIndex>,
+        instant: bool,
+        demand: bool,
+    }
+
+    let map_items = sdata
+        .initial_map
+        .iter()
+        .flat_map(|(_, (_, i))| *i)
+        .collect::<HashSet<_>>();
+
+    let mut nodes = Vec::new();
+    for r in &data.recipes {
+        nodes.push(Node {
+            inputs: r.inputs(),
+            outputs: r.outputs(),
+            tool_item: None,
+            tool_tile: r.tile(),
+            instant: matches!(r, Recipe::Instant { .. }),
+            demand: false,
+        })
+    }
+    for d in &data.demands {
+        nodes.push(Node {
+            demand: true,
+            instant: false,
+            inputs: vec![d.input],
+            outputs: d.output.into_iter().collect(),
+            tool_item: None,
+            tool_tile: None,
+        })
+    }
+
+    loop {
+        let node_count_before = nodes.len();
+
+        let mut has_fdeps = vec![false; data.item_names.len()];
+        for n in &nodes {
+            for ItemIndex(i) in &n.inputs {
+                has_fdeps[*i] = true;
+            }
+        }
+        // Remove demand outputs
+        for n in &mut nodes {
+            n.outputs.retain(|_item| !n.demand);
+        }
+        // Remove outputs that are not depended on
+        for n in &mut nodes {
+            n.outputs.retain(|item| n.demand || has_fdeps[item.0])
+        }
+        // Remove outputs that exist on the map, like pots and plates
+        for n in &mut nodes {
+            n.outputs.retain(|item| !map_items.contains(item))
+        }
+        // Convert map item inputs to tools
+        for n in &mut nodes {
+            n.inputs.retain(|i| {
+                if map_items.contains(i) {
+                    n.tool_item = Some(*i);
+                    false
+                } else {
+                    true
+                }
+            })
+        }
+        // Remove outputless recipes
+        nodes.retain(|n| n.demand || !n.outputs.is_empty());
+
+        if nodes.len() == node_count_before {
+            break;
+        }
+    }
+
+    let mut items = HashSet::<ItemIndex>::new();
+    for n in &nodes {
+        items.extend(&n.inputs);
+        items.extend(&n.outputs);
+    }
+
+    for ItemIndex(i) in items {
+        println!("i{i} [label=\"{}\"]", data.item_name(ItemIndex(i)))
+    }
+    for (ni, node) in nodes.iter().enumerate() {
+        let color = if node.demand {
+            "#c4422b"
+        } else if node.instant {
+            "#5452d8"
+        } else {
+            "#47c42b"
+        };
+        println!(
+            "r{ni} [label=\"{}\" shape=box color={color:?} fillcolor={color:?} style=filled]",
+            if let Some(tool) = node.tool_tile {
+                data.tile_name(tool)
+            } else if let Some(tool) = node.tool_item {
+                data.item_name(tool)
+            } else if node.instant {
+                "Combine"
+            } else if node.demand {
+                "Demand"
+            } else {
+                "Passive"
+            }
+        );
+        for ItemIndex(input) in &node.inputs {
+            println!("i{input} -> r{ni}")
+        }
+        for ItemIndex(output) in &node.outputs {
+            println!("r{ni} -> i{output}")
+        }
+    }
+
+    println!("}}");
+    Ok(())
+}