#!/usr/bin/env python3
from pathlib import Path


ROOT = Path(__file__).resolve().parents[1]
LIB_DIR = ROOT / "modules/chart_engine/static/lib"
SOURCE_DIR = LIB_DIR / "chart_utils"
BUNDLE_PATH = LIB_DIR / "utils.js"

CHART_UTILS_FILES = [
    "core.js",
    "schema.js",
    "format.js",
    "color.js",
    "text.js",
    "legend.js",
    "index.js",
    "compat.js",
]


def main() -> None:
    missing = [name for name in CHART_UTILS_FILES if not (SOURCE_DIR / name).is_file()]
    if missing:
        raise SystemExit(f"Missing chart_utils source files: {', '.join(missing)}")

    bundle = "\n\n".join(
        (SOURCE_DIR / name).read_text(encoding="utf-8").rstrip()
        for name in CHART_UTILS_FILES
    )
    BUNDLE_PATH.write_text(bundle + "\n", encoding="utf-8")
    print(f"Wrote {BUNDLE_PATH.relative_to(ROOT)}")


if __name__ == "__main__":
    main()