#!/usr/bin/env python3
"""Functional check: can animation/ actually drive character_refined/?
Uses real node-tree bone names (not regex)."""
import os,sys,json,collections
HERE=os.path.dirname(os.path.abspath(__file__)); sys.path.insert(0,HERE)
from fbx_bones import bones
ROOT=os.path.dirname(HERE)
A=os.path.join(ROOT,"animation"); R=os.path.join(ROOT,"character_refined")

af=sorted(f for f in os.listdir(A) if f.endswith(".fbx"))
print("parsing %d animations..."%len(af),flush=True)
abones={}; sizes=collections.Counter()
for i,f in enumerate(af,1):
    s=bones(os.path.join(A,f)); abones[f]=s; sizes[len(s)]+=1
    if i%800==0: print("   %d/%d"%(i,len(af)),flush=True)
union=set().union(*abones.values())
core=set.intersection(*abones.values())
print("  animation bone-count histogram:",dict(sorted(sizes.items())))
print("  union=%d  core(in every animation)=%d"%(len(union),len(core)))
if union-core: print("  bones not in every animation:",sorted(x for x in union-core))

rf=sorted(f for f in os.listdir(R) if f.endswith(".fbx"))
print("\nparsing %d characters..."%len(rf),flush=True)
rb={}
for i,f in enumerate(rf,1):
    rb[f]=bones(os.path.join(R,f))
    if i%40==0: print("   %d/%d"%(i,len(rf)),flush=True)

full=[f for f in rf if union<=rb[f]]
corefull=[f for f in rf if core<=rb[f]]
partial=[(f,len(rb[f]),sorted(core-rb[f])[:4]) for f in rf if not core<=rb[f]]
print("\n=== RETARGET COMPATIBILITY ===")
print("  characters covering the FULL animation union (%d bones): %d/114"%(len(union),len(full)))
print("  characters covering the CORE rig (%d bones)            : %d/114"%(len(core),len(corefull)))
print("  characters missing some core bones                     : %d"%len(partial))
hist=collections.Counter(len(v) for v in rb.values())
print("  character bone-count histogram:",dict(sorted(hist.items())))
print("\n  characters with a reduced rig (will simply receive no data on absent bones):")
for f,n,miss in sorted(partial,key=lambda x:x[1])[:15]:
    print("    %-26s %3d bones | e.g. missing %s"%(f,n,miss))
json.dump({f:sorted(v) for f,v in rb.items()},open(os.path.join(ROOT,"character_bones.json"),"w"),indent=1)
assert union==core, "union != core; inspect before writing a single-key file"
json.dump({"mixamo":sorted(union)},open(os.path.join(ROOT,"animation_bones.json"),"w"),indent=1)
print("\nwrote ../character_bones.json and ../animation_bones.json")