"""Fingerprint a .3dm (run inside Rhino 8 via runner). Globals: MODEL_PATH, OUT_PATH, optional FAST.

Opens MODEL_PATH headless (the active doc is untouched) and writes, per object id (user string `id`,
falling back to the object name): layer path, geometry type, visibility, colour, bbox (0.01 mm),
brep face count / solidity / volume (mm3, 1 decimal), curve length (0.001 mm) and all user strings.
Hidden and locked objects are included.
"""
import json

import Rhino
import Rhino.Geometry as rg
from Rhino.DocObjects import ObjectEnumeratorSettings

FAST = globals().get("FAST", False)
d = Rhino.RhinoDoc.OpenHeadless(MODEL_PATH)
if d is None:
    raise RuntimeError(f"cannot open {MODEL_PATH}")
try:
    s = ObjectEnumeratorSettings()
    s.HiddenObjects = True
    s.LockedObjects = True
    objs, layers = {}, {}
    for o in d.Objects.GetObjectList(s):
        a = o.Attributes
        oid = a.GetUserString("id") or a.Name or str(o.Id)
        lay = d.Layers[a.LayerIndex]
        layers[lay.FullPath] = [lay.Color.R, lay.Color.G, lay.Color.B, lay.IsVisible]
        g = o.Geometry
        bb = g.GetBoundingBox(True)
        rec = {"layer": lay.FullPath, "type": type(g).__name__, "hidden": o.IsHidden, "locked": o.IsLocked,
               "colour_source": int(a.ColorSource), "colour": [a.ObjectColor.R, a.ObjectColor.G, a.ObjectColor.B],
               "bbox": [round(v, 2) for v in (bb.Min.X, bb.Min.Y, bb.Min.Z, bb.Max.X, bb.Max.Y, bb.Max.Z)],
               "user": {k: a.GetUserString(k) for k in sorted(a.GetUserStrings().AllKeys)}}
        b = g if isinstance(g, rg.Brep) else (rg.Brep.TryConvertBrep(g) if isinstance(g, rg.Extrusion) else None)
        if b is not None:
            rec["faces"], rec["solid"] = b.Faces.Count, b.IsSolid
            if FAST and "-R-" in oid:            # rebar pipe: bbox + face count only (volume dominates run time)
                rec["volume"] = "skipped"
            else:
                mp = rg.VolumeMassProperties.Compute(b) if b.IsSolid else None
                rec["volume"] = round(mp.Volume, 1) if mp else None
        elif isinstance(g, rg.Curve):
            rec["length"] = round(g.GetLength(), 3)
        if oid in objs:
            oid = f"{oid}#dup{sum(k.startswith(oid) for k in objs)}"
        objs[oid] = rec
    out = {"model": MODEL_PATH, "units": str(d.ModelUnitSystem), "tolerance": d.ModelAbsoluteTolerance,
           "count": len(objs), "layers": layers, "objects": objs}
    json.dump(out, open(OUT_PATH, "w", encoding="utf-8"), ensure_ascii=False)
    print(json.dumps({"count": len(objs), "units": out["units"], "tolerance": out["tolerance"]}))
finally:
    d.Dispose()