#!/usr/bin/env python3
"""Inject co-op branding + a per-build marker into the built index.html.

Non-fatal by design: if the file is missing or upstream changes shape, we
exit 0 so a cosmetic patch can never break a version bump.

The x-coop-build marker makes index.html unique per build, which changes the
service worker's precache revision — otherwise stale clients keep running the
old cached app shell (the "my changes never deploy" class of bug).
"""
import time

PATH = "/app/code/librechat/client/dist/index.html"

try:
    html = open(PATH, encoding="utf-8").read()
except OSError:
    raise SystemExit(0)

# 1. Title
html = html.replace("<title>LibreChat</title>", "<title>Inference Co\u2011op</title>")

# 2. Stylesheet + helper script (idempotent — skip if already present)
if "assets/custom.css" not in html:
    html = html.replace(
        "</title>",
        '</title>\n    <link rel="stylesheet" href="assets/custom.css">',
        1,
    )
if "assets/custom2.js" not in html:
    html = html.replace(
        '<link rel="stylesheet" href="assets/custom.css">',
        '<link rel="stylesheet" href="assets/custom.css">\n    <script src="assets/custom2.js"></script>',
        1,
    )

# 3. Per-build marker → forces the service worker to refresh the precache
if "x-coop-build" not in html:
    marker = '<meta name="x-coop-build" content="{}">'.format(int(time.time()))
    html = html.replace("</title>", "</title>\n    " + marker, 1)

open(PATH, "w", encoding="utf-8").write(html)
print("index.html: co-op branding + build marker injected")