import time
try:
    import pymel.core as pm
except ImportError:
    pm = None

import maya.cmds as cmds
# import atcore.atvc.atvc as atvc
import os

try:
    import skin_api.Utils as apiUtils
    import skin_api.Skinning as apiSkinning
except ImportError:
    from . import Utils as apiUtils
    from . import Skinning as apiSkinning

'''
apiVtxAttribs is a "caller"-class in order to organize the simplified returns of the other modules such as EACloth or Skinning
I deem it the "garbage" collector for any general combination of the Utils, Skinning, EACloth, Havok modules that we find useful
eg a list with skinning, blendshape and paintableAttrs looks like this
{"ObjectName":    {skinCluster:{clusterWeights, clusterInflNames, clusterMaxInf}
                  {blendShape:{clusterWeights, clusterTargets}
                  {paintableAttr:{clusterWeights}
'''


class ApiVtxAttribs():
    def __init__(self):
        if pm:
            self.activeScenePath = os.path.dirname(pm.sceneName())
        else:
            scene_name = cmds.file(q=True, sn=True)
            self.activeScenePath = os.path.dirname(scene_name) if scene_name else ""
        # self.vc = atvc.VersionControl()

        self.filePath               = ""

        self.sourceWeightDict       = {}
        self.transferWeightDict     = {}
        self.barycentrWeightDict    = {}

        self.skinWeightsFilter      = "API Skin weights file (*.skinWeights)"



    def exportSkinWeights(self, filePath=None, selected=False, saveJointInfo=False):
        '''
        Export skinweights for meshes in maya
        If no filePath is provided the function prompts a file dialogue window
        If selected is False, function will operate on all valid objects (meshes) found in the active maya scene.
        :param filePath: <string> default is None
        :param selected: <bool> default is False
        :param saveJointInfo: <bool> saves joint orient, world transform and parent joint info, default is False
        :return:
        '''
        msg = ""
        # get filepath for skinweightsfile
        if not filePath:
            filePath = apiUtils.filePathPrompt(dialogMode=0, caption= "Export Skinweights", dirPath=self.activeScenePath, filter = self.skinWeightsFilter)

        if filePath:
            if selected:
                if pm:
                    transNodes = apiUtils.getTransforms(pm.ls(sl=True))
                else:
                    transNodes = apiUtils.getTransforms(cmds.ls(sl=True))
            else:
                if pm:
                    transNodes = apiUtils.getTransforms(pm.ls(type="mesh"))
                else:
                    # cmds.ls 也使用 type 参数
                    transNodes = apiUtils.getTransforms(cmds.ls(type="mesh"))

            start = time.time()
            skinWeightsDict = apiSkinning.buildSkinWeightsDict(transNodes, saveJointInfo=saveJointInfo)

            apiUtils.pickleDumpWeightsToFile(skinWeightsDict, filePath)
            end = time.time()
            msg = "Skinning Exported to %s in: " % filePath + str(end - start) + " seconds"
        
        return msg



    def importSkinWeights(self, filePath=None, selected=False, stripJointNamespaces=False, addNewToHierarchy=False):
        '''
        Import skinweights for meshes in maya.
        If no filePath is provided the function prompts a file dialogue window
        If selected is False, function will operate on all valid objects (meshes) found in the active maya scene.
        Runs a filtering process on the given .skinWeights file, matching objects based on name AND vtx count.
        :param filePath: <string> default is None, accepts .skinWeights files
        :param selected: <bool> default is False
        :param stripJointNamespaces: <bool> strips joint namespaces on skinWeights file, default is False
        :param addNewToHierarchy: <bool> adds missing joints, world transform and parent only correct when exported with joint info, default is False
        :return:
        '''
        msg = ""
        # get filepath for skinweightsfile
        if not filePath:
            filePath = apiUtils.filePathPrompt(dialogMode= 1,
                                               caption="Import Skinweights",
                                               dirPath=self.activeScenePath,
                                               filter=self.skinWeightsFilter)
        if filePath:
            if os.path.exists(filePath) and filePath.endswith(".skinWeights"):

                fileWeightDict = apiUtils.getPickleObject(filePath)

                if fileWeightDict: # then build a filtered local "scene" weight dictionary and a list of valid Objects

                    sceneWeightDict, validNodeList = apiUtils.matchDictionaryToSceneMeshes(weightDictionary=fileWeightDict, selected=selected)

                    if len(validNodeList) > 0:
                        loadBarMaxVal = len(validNodeList)
                        loadBarObj = apiUtils.LoadingBar()

                        msg = "Importing skinning for : " + str(validNodeList)
                        for validNode in validNodeList:
                            loadBarObj.loadingBar("Importing Skinweights...", loadBarMaxVal, "Importing...")
                            apiSkinning.skinClusterBuilder(validNode, sceneWeightDict, stripJointNamespaces=stripJointNamespaces, addNewToHierarchy=addNewToHierarchy)
                    else:
                        # log.error("No valid objects found in scene!")
                        msg = "No valid objects found in scene!"
                        return False
            else:
                msg = "Could not find a .skinWeights file with path %s" % filePath
                # return False
        
        return msg