"""Patch lightglue __init__.py to wrap optional imports in try/except."""
import pathlib

matches = list(pathlib.Path("/usr/local/lib").rglob("lightglue/__init__.py"))
if not matches:
    print("lightglue __init__.py not found, skipping patch")
    exit(0)

f = matches[0]
print(f"Patching {f}")
text = f.read_text()
lines = text.split("\n")
out = []

# Keep superpoint, lightglue, utils imports untouched
# Wrap disk, aliked, doghardnet etc. in try/except
keep = {"superpoint", "lightglue", "utils", "sift"}

for line in lines:
    if line.startswith("from .") and "import" in line:
        module = line.split("from .")[1].split(" ")[0]
        if module in keep:
            out.append(line)
        else:
            out.append("try:")
            out.append("    " + line)
            out.append("except Exception:")
            out.append("    pass")
    else:
        out.append(line)

f.write_text("\n".join(out))
print("Patched OK")