1 files changed, 57 insertions, 0 deletions
diff --git a/server/tools/src/diagram_dot.rs b/server/tools/src/diagram_dot.rs
new file mode 100644
index 00000000..e78f831f
--- /dev/null
+++ b/server/tools/src/diagram_dot.rs
@@ -0,0 +1,57 @@
+/*
+    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::{Gamedata, Message, book::Diagram};
+use std::fmt::Write;
+
+pub fn diagram_dot(data: &Gamedata, diagram: &Diagram) -> Result<String> {
+    let mut out = String::new();
+    writeln!(out, "digraph {{")?;
+    for (i, n) in diagram.nodes.iter().enumerate() {
+        let mut attrs = Vec::new();
+        if let Some(color) = &n.color {
+            attrs.push(format!("style=filled"));
+            attrs.push(format!("fillcolor={color:?}"));
+            attrs.push(format!("color={color:?}"));
+        }
+        if let Some(shape) = &n.shape {
+            attrs.push(format!("shape={shape}"));
+        }
+        writeln!(
+            out,
+            "k{i} [label=\"{}\" {}]",
+            message_str(data, &n.label),
+            attrs.join(" ")
+        )?;
+    }
+    for edge in &diagram.edges {
+        writeln!(out, "k{} -> k{}", edge.src, edge.dst)?;
+    }
+    writeln!(out, "}}")?;
+    Ok(out)
+}
+
+fn message_str(data: &Gamedata, message: &Message) -> String {
+    match message {
+        Message::Translation { .. } => todo!(),
+        Message::Text(x) => x.to_owned(),
+        Message::Item(item_index) => data.item_name(*item_index).to_string(),
+        Message::Tile(tile_index) => data.tile_name(*tile_index).to_string(),
+    }
+}