#!/usr/bin/env python3
"""
Touch files that must pass Sphinx nit-picky mode
so they are rebuilt and we can catch regressions.
"""
import argparse
import csv
import sys
from pathlib import Path

wrong_directory_msg = "Must run this script from the repo root"
assert Path("Doc").exists() and Path("Doc").is_dir(), wrong_directory_msg

# Exclude these whether they're dirty or clean,
# because they trigger a rebuild of dirty files.
EXCLUDE_FILES = {
    Path("Doc/whatsnew/changelog.rst"),
}

# Subdirectories of Doc/ to exclude.
EXCLUDE_SUBDIRS = {
    ".env",
    ".venv",
    "env",
    "includes",
    "venv",
}

ALL_RST = {
    rst for rst in Path("Doc/").rglob("*.rst") if rst.parts[1] not in EXCLUDE_SUBDIRS
}


parser = argparse.ArgumentParser(
    description=__doc__, formatter_class=argparse.RawDescriptionHelpFormatter
)
parser.add_argument("-c", "--clean", help="Comma-separated list of clean files")
args = parser.parse_args()

if args.clean:
    clean_files = next(csv.reader([args.clean]))
    CLEAN = {
        Path(filename.strip())
        for filename in clean_files
        if Path(filename.strip()).is_file()
    }
elif args.clean is not None:
    print(
        "Not touching any files: an empty string `--clean` arg value passed.",
    )
    sys.exit(0)
else:
    with Path("Doc/tools/.nitignore").open() as ignored_files:
        IGNORED = {
            Path(filename.strip())
            for filename in ignored_files
            if filename.strip() and not filename.startswith("#")
        }
    CLEAN = ALL_RST - IGNORED - EXCLUDE_FILES

print("Touching:")
for filename in sorted(CLEAN):
    print(filename)
    filename.touch()
print(f"Touched {len(CLEAN)} files")