From 87fb7ea46bf51040b82ee1dae8d1309b237dd5a6 Mon Sep 17 00:00:00 2001
From: Petr Korolev <sky4winder@gmail.com>
Date: Thu, 9 Jul 2026 00:25:16 +0400
Subject: [PATCH] Add ColorNote color index filter

---
 .gitignore                |  4 +++
 exclude_by_color_index.py | 52 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 exclude_by_color_index.py

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..8bc62cd
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+*.backup
+*.jex
+*.json
+
diff --git a/exclude_by_color_index.py b/exclude_by_color_index.py
new file mode 100644
index 0000000..277f396
--- /dev/null
+++ b/exclude_by_color_index.py
@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+import argparse
+import json
+from pathlib import Path
+
+
+def parse_args():
+    parser = argparse.ArgumentParser(
+        description="Copy a ColorNote JSON export while excluding notes by color_index."
+    )
+    parser.add_argument(
+        "input_file",
+        type=Path,
+        help="Source JSON file produced by the ColorNote decrypt script.",
+    )
+    parser.add_argument(
+        "output_file",
+        type=Path,
+        help="Destination JSON file.",
+    )
+    parser.add_argument(
+        "--exclude-color-index",
+        type=int,
+        required=True,
+        help="color_index value to exclude from the copied JSON.",
+    )
+    return parser.parse_args()
+
+
+def main():
+    args = parse_args()
+    notes = json.loads(args.input_file.read_text(encoding="utf-8-sig"))
+
+    kept = [
+        note for note in notes
+        if note.get("color_index") != args.exclude_color_index
+    ]
+
+    args.output_file.write_text(
+        json.dumps(kept, ensure_ascii=False, indent=2),
+        encoding="utf-8-sig",
+    )
+
+    removed = len(notes) - len(kept)
+    print(f"Input records: {len(notes)}")
+    print(f"Removed color_index={args.exclude_color_index}: {removed}")
+    print(f"Output records: {len(kept)}")
+    print(f"Wrote: {args.output_file}")
+
+
+if __name__ == "__main__":
+    main()