From fa3473cdc2702cd29ad2169b6bde3eb355a80ff1 Mon Sep 17 00:00:00 2001
From: Marty Oehme <contact@martyoeh.me>
Date: Tue, 30 Sep 2025 18:32:03 +0200
Subject: [PATCH] add generation script for file stats

---
 code/files.py | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++
 justfile      |  7 ++++--
 2 files changed, 72 insertions(+), 2 deletions(-)
 create mode 100644 code/files.py

diff --git a/code/files.py b/code/files.py
new file mode 100644
index 0000000..578ebeb
--- /dev/null
+++ b/code/files.py
@@ -0,0 +1,67 @@
+import csv
+from collections.abc import Generator
+from datetime import datetime
+from pathlib import Path
+
+
+def filesize_csv(input_dir: Path, output_dir: Path) -> None:
+    output_file = output_dir / "files.csv"
+    with output_file.open("w") as fw:
+        writer = csv.writer(fw)
+        writer.writerow(["date", "filename", "mtime", "filesize"])
+
+        for j in input_dir.glob("*.json"):
+            p_date = j.stem
+            p_fname = j.name
+            stat = j.stat()
+            p_mtime = stat.st_mtime
+            p_size = stat.st_size
+            writer.writerow([p_date, p_fname, p_mtime, p_size])
+
+
+def newer_than_last_clean(
+    input_glob: Generator[Path], output_glob: Generator[Path], desc: str | None = None
+) -> bool:
+    last_raw_update: datetime = datetime(1, 1, 1)
+    oldest_clean: datetime = datetime.now()
+    for file in input_glob:
+        mdate = datetime.fromtimestamp(file.stat().st_mtime)
+        if mdate > last_raw_update:
+            last_raw_update = mdate
+    for file in output_glob:
+        mdate = datetime.fromtimestamp(file.stat().st_mtime)
+        if mdate < oldest_clean:
+            oldest_clean = mdate
+    if oldest_clean > last_raw_update:
+        print(
+            "INFO: Skip creating cleaned data"
+            + f"{f' for {desc}' if desc else ''}"
+            + f", last processing {oldest_clean} newer than {last_raw_update}"
+        )
+        return False
+    return True
+
+
+def ensure_dirs(input_dir: Path, output_dir: Path):
+    if not input_dir.is_dir():
+        raise ValueError
+    output_dir.mkdir(exist_ok=True, parents=True)
+
+
+def main(input: str, output: str) -> None:
+    input_dir = Path(input)
+    output_dir = Path(output)
+    ensure_dirs(input_dir, output_dir)
+
+    filesize_csv(input_dir, output_dir)
+
+
+if __name__ == "__main__":
+    import sys
+
+    if not len(sys.argv) == 3:
+        print("Please provide exactly one input directory and one output directory.")
+        sys.exit(1)
+    inp = sys.argv[1]
+    out = sys.argv[2]
+    main(inp, out)
diff --git a/justfile b/justfile
index a40ee33..0c45ee5 100644
--- a/justfile
+++ b/justfile
@@ -1,7 +1,10 @@
-default: kernels unique
+default: files kernels unique
+
+files:
+    python code/files.py input output
 
 kernels:
     python code/kernels.py input output
 
 unique:
-    python ./code/unique.py input output
+    python code/unique.py input output