#!/usr/bin/env python3
"""Junta as licencas dos pacotes npm que entram no bundle (lidos dos source maps do build) e o texto de licenca de
cada um. Uso: licenses.py <pasta do build> <node_modules> <saida.txt>. Falha se algum pacote nao tiver licenca
permissiva conhecida (MIT, ISC, BSD, Apache-2.0, 0BSD)."""
import glob, json, os, re, sys

build, nm, out = sys.argv[1:4]
pk = set()
for f in glob.glob(os.path.join(build, "static/js/*.map")):
    for s in json.load(open(f))["sources"]:
        m = re.search(r"node_modules/((?:@[^/]+/)?[^/]+)/", s)
        if m:
            pk.add(m.group(1))
# so o carregador do webpack e as ferramentas de desenvolvimento (hot reload) aparecem sem entrar no codigo do jogo
pk -= {"webpack", "process", "react-hot-loader"}
ok = ("MIT", "ISC", "BSD", "Apache", "0BSD")
lines, bad = [], []
for name in sorted(pk):
    d = os.path.join(nm, name)
    meta = json.load(open(os.path.join(d, "package.json")))
    lic = meta.get("license") or (meta.get("licenses") or [{}])[0].get("type") or ""
    if isinstance(lic, dict):
        lic = lic.get("type", "")
    if not any(o in lic for o in ok):
        bad.append((name, lic))
    files = sorted(f for f in glob.glob(os.path.join(d, "*"))
                   if os.path.isfile(f) and os.path.basename(f).upper().startswith(("LICENSE", "LICENCE", "COPYING")))
    lines.append("=" * 78)
    lines.append("%s %s  (%s)" % (name, meta.get("version", ""), lic or "see files"))
    lines.append("=" * 78)
    if not files:
        lines.append("(no license file in the published package; license field above)")
    for f in files:
        lines.append(open(f, encoding="utf-8", errors="replace").read().rstrip())
        lines.append("")
if bad:
    sys.exit("licencas a conferir: %r" % bad)
open(out, "w", encoding="utf-8").write("npm packages bundled in the game (read from the build's source maps), with their licence texts.\n\n" + "\n".join(lines) + "\n")
print("pacotes:", len(pk))