import FreeCADGui as Gui
import FreeCAD as App

class AHB_ParseStep:
    def GetResources(self):
        return {"MenuText": "[dev] parse STEP",
                "ToolTip": "Reload informations from the original STEP file",
                "Pixmap": ""
                }

    def IsActive(self):
        return True

    def Activated(self):
        import step_parser
        import os
        import importlib

        importlib.reload(step_parser)

        print("Reloading STEP file metadata...")

        doc = App.activeDocument()

        filename: str = doc.FileName
        if filename is None:
            raise BaseException("You must save your FreeCAD document before parsing the corresponding STEP file")

        filename = os.path.splitext(filename)[0] + ".step"

        step_info = step_parser.parse(filename)

        objects = doc.Objects

        override_names = False
        feature_idx = 0
        total_features = 0
        obj: App.DocumentObject
        for obj in objects:
            if obj.TypeId == 'Part::Feature':
                total_features = total_features + 1
                object_idx = -1
                if override_names:
                    object_idx = feature_idx + 1
                else:
                    for idx in range(len(step_info.objects)):
                        if step_info.objects[idx].name == obj.Label:
                            object_idx = idx
                            break

                if 0 <= object_idx < len(step_info.objects):
                    object_info = step_info.objects[object_idx]
                    print(obj.Label + " => " + object_info.name)

                    obj.Label = object_info.name

                    if object_info.layer is not None:
                        if "Base_Reference" not in obj.PropertiesList:
                            obj.addProperty("App::PropertyString", "Base_Reference", "Base")
                        obj.Base_Reference = object_info.layer.reference

                        if "Base_Layer" not in obj.PropertiesList:
                            obj.addProperty("App::PropertyString", "Base_Layer", "Base")
                        obj.Base_Layer = object_info.layer.name
                feature_idx = feature_idx + 1

        step_info2 = step_parser.parse(filename, 'SOLIDS')
        print("STEP names phase 2 (" + str(len(step_info2.objects)) + ")")
        feature_idx = 0
        for obj in objects:
            if obj.TypeId == 'Part::Feature':
                #print(obj.Label)
                if obj.Label.startswith("COMPOUND"):
                    feature_from_end = total_features - feature_idx
                    object_idx = len(step_info2.objects) - feature_from_end
                    #print(obj.Label + " object_idx=" + str(object_idx))
                    if 0 <= object_idx < len(step_info2.objects):
                        object_info = step_info2.objects[object_idx]
                        print(obj.Label + " => " + object_info.name)

                        obj.Label = object_info.name

                        if object_info.layer is not None:
                            if "Base_Reference" not in obj.PropertiesList:
                                obj.addProperty("App::PropertyString", "Base_Reference", "Base")
                            obj.Base_Reference = object_info.layer.reference

                            if "Base_Layer" not in obj.PropertiesList:
                                obj.addProperty("App::PropertyString", "Base_Layer", "Base")
                            obj.Base_Layer = object_info.layer.name
                feature_idx = feature_idx + 1

        print("STEP names import finished")

from ahb_command import AHB_CommandWrapper
AHB_CommandWrapper.addGuiCommand('AHB_parse_step', AHB_ParseStep())