import bpy, os
TEXROOT = os.path.expanduser("~/game_assets/unitypacks_extracted/sci_fi_hands/Assets/Sci_Fi_Hands/Textures")
_CACHE = {}
def _load(path, maxs, noncolor=False):
    if path in _CACHE: return _CACHE[path]
    img = bpy.data.images.load(path)
    if noncolor: img.colorspace_settings.name = "Non-Color"
    w, h = img.size
    if max(w, h) > maxs:
        f = maxs / max(w, h)
        img.scale(int(w*f), int(h*f))
    _CACHE[path] = img
    return img

def bind():
    print("MATERIALS:", [m.name for m in bpy.data.materials])
    for mat in bpy.data.materials:
        n = mat.name.lower()
        pref = "FPS_Sci_Fi_Hands_Details" if "detail" in n else ("Sci_Fi_Shield" if "shield" in n else "FPS_Sci_Fi_Hands")
        sub = os.path.join(TEXROOT, pref)
        if not os.path.isdir(sub): continue
        alb = os.path.join(sub, pref + "_Albedo_01.tga")
        nrm = os.path.join(sub, pref + "_Normals.tga")
        if not os.path.exists(alb): continue
        mat.use_nodes = True
        nt = mat.node_tree
        bsdf = next((x for x in nt.nodes if x.type == "BSDF_PRINCIPLED"), None)
        if not bsdf: continue
        timg = nt.nodes.new("ShaderNodeTexImage")
        timg.image = _load(alb, 1024)
        nt.links.new(timg.outputs["Color"], bsdf.inputs["Base Color"])
        if os.path.exists(nrm):
            nimg = nt.nodes.new("ShaderNodeTexImage")
            nimg.image = _load(nrm, 512, noncolor=True)
            nmap = nt.nodes.new("ShaderNodeNormalMap")
            nt.links.new(nimg.outputs["Color"], nmap.inputs["Color"])
            nt.links.new(nmap.outputs["Normal"], bsdf.inputs["Normal"])
        print("BOUND", mat.name, "->", pref)