SOLIDWORKS Bridge

#!/usr/bin/env python3
"""page.json carries what the wiki page shows that package.json owns: tags and
discovery triggers (0.9.12 — the page showed `tags: []`). Run with no argument
to write page.json; `--check` exits 1 if it is out of sync (release.sh runs
that before it publishes anything)."""
import json, os, sys

ROOT = os.path.join(os.path.dirname(os.path.abspath(__file__)), "..")
FIELDS = ("tags", "discovery_triggers")


def wanted():
    pkg = json.load(open(os.path.join(ROOT, "package.json")))
    page = json.load(open(os.path.join(ROOT, "page.json")))
    out = dict(page)
    for f in FIELDS:
        if f in pkg:
            out[f] = pkg[f]
    return page, out


def main():
    page, out = wanted()
    if "--check" in sys.argv:
        drift = [f for f in FIELDS if page.get(f) != out.get(f)]
        if drift:
            print("page.json out of sync with package.json: %s" % ", ".join(drift))
            return 1
        return 0
    with open(os.path.join(ROOT, "page.json"), "w") as fh:
        json.dump(out, fh, indent=2, ensure_ascii=False)
        fh.write("\n")
    print("page.json synced: %s" % ", ".join(FIELDS))
    return 0


if __name__ == "__main__":
    sys.exit(main())