compact atc_chains

compact_atc_chains.py

@@ -0,0 +1,90 @@
+#!/usr/bin/env python3
+
+from __future__ import annotations
+
+import argparse
+import json
+from pathlib import Path
+
+
+def crop_icon(icon: str | None) -> list[int | str] | None:
+    if not icon:
+        return None
+
+    lines = icon.split("\n")
+    xs: list[int] = []
+    ys: list[int] = []
+
+    for y, line in enumerate(lines):
+        for x, char in enumerate(line):
+            if char != " ":
+                xs.append(x)
+                ys.append(y)
+
+    if not xs:
+        return [0, 0, ""]
+
+    min_x = min(xs)
+    max_x = max(xs)
+    min_y = min(ys)
+    max_y = max(ys)
+    cropped_lines = [line[min_x : max_x + 1].rstrip() for line in lines[min_y : max_y + 1]]
+    return [min_x, min_y, "\n".join(cropped_lines)]
+
+
+def compact_chains(data: object) -> list[list[object]]:
+    if isinstance(data, dict):
+        chains = data.get("chains")
+    else:
+        chains = data
+
+    if not isinstance(chains, list):
+        raise ValueError("Input JSON does not contain a valid chains array")
+
+    compact: list[list[object]] = []
+
+    for chain in chains:
+        if not isinstance(chain, dict):
+            raise ValueError("Expected verbose chain objects as input")
+
+        items = chain.get("items")
+        if not isinstance(items, list) or not items:
+            continue
+
+        base_id = chain["base_id"]
+        base_icon = crop_icon(items[0].get("icon_nfp_16x16"))
+        compact_items = []
+
+        for item in items[1:]:
+            compact_items.append([
+                item["item_id"],
+                crop_icon(item.get("icon_nfp_16x16")),
+            ])
+
+        compact.append([base_id, base_icon, compact_items])
+
+    return compact
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(
+        description="Rewrite atc_chains.json into a compact format used by compcount.lua."
+    )
+    parser.add_argument("path", nargs="?", default="atc_chains.json")
+    args = parser.parse_args()
+
+    path = Path(args.path)
+    original_text = path.read_text(encoding="utf-8")
+    data = json.loads(original_text)
+    compact = compact_chains(data)
+    compact_text = json.dumps(compact, separators=(",", ":"))
+    path.write_text(compact_text, encoding="utf-8")
+
+    print(f"Rewrote {path}")
+    print(f"Old size: {len(original_text.encode('utf-8'))} bytes")
+    print(f"New size: {len(compact_text.encode('utf-8'))} bytes")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())