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##get blendshapes with inbetweens
##select 'FCL_head_MESH_GRP_BSuser'  --- THATS THE GRP
##This script will extract all bshape with inbetweens and name them accordingly

##This currently works but not with multiple shapes 
##No idea Why

import pymel.core as pm
##select object
sel = pm.selected()[0]
child = sel.getChildren()[0] ##we take a first transform we find since they are all going into sam bshape node

head = pm.ls('FCL_head_MESH_BSuser')

blendNode = pm.listHistory(child,type = 'blendShape')[0]
##blendNode = pm.listConnections(sel.getShape(),type = 'blendShape')
extractedBlends =[]
##select bshape node
def duplBlendShapesWithInB(blendNode,child):

    blendAttrSize = cmds.getAttr(blendNode+'.weight') ## here we get a list of all the bshapes values -- mainly to use as a max counter
    shape = child
    
    #loop over the attributes now and get their name info
    for i in range(len(blendAttrSize[0])):
        attrName = blendNode + ".weight[" + str(i) + "]"
        print 'ATTR NAME : ' + attrName  ##ATTR NAME : FCL_blendShape1.weight[31]
        name = cmds.aliasAttr(attrName, q=True)
        print 'NAME : ' + name ##NAME : FCL_GRP_beak_narrow_dn_R
        ##check if inbetweens
        il = blendNode.targetItemIndexList(i,shape) ##[5225,5500,6000]
        print il
        for val in il:
            print val ## this is were we find out if its a blend with inbetweens [5250,5500,6000] or no Ibetweens just [6000]
            if val == 6000:                
                ## put weight of bshape to 1 and dupl
                pm.setAttr(attrName,1) ##set blend to 1
                dupl = pm.duplicate(head)
                pm.rename(dupl,name)
                ## put back to 0
                pm.setAttr(attrName,0)
                extractedBlends.append(dupl)
            else:
                ib_val = (val-5000)/1000.0
                pm.setAttr(attrName,ib_val) ##set blend to 1
                dupl = pm.duplicate(head)
                nName = name + '__' + str(ib_val)
                pm.rename(dupl,nName)
                ## put back to 0
                pm.setAttr(attrName,0)
                extractedBlends.append(dupl)

    return extractedBlends  

blends = duplBlendShapesWithInB(blendNode,child)
pm.group(blends,n = 'extractedBlends_GRP',world = True)


##bs_node = pm.PyNode('FCL_blendShape1')
##il = bs_node.targetItemIndexList(9, 'FCL_head_MESH_BSuserShape')
##print il
##it will return
##Result: [5279, 5598, 6000]
##otherwise result 6000