import sys, arcpy, os

class Toolbox(object):
    def __init__(self):
        """Define the toolbox (the name of the toolbox is the name of the
        .pyt file)."""
        self.label = "EGDB Data Steward Version"
        self.alias = ""

        # List of tool classes associated with this toolbox
        self.tools = [Prep]

class Prep(object):
    def __init__(self):
        """Define the tool (tool name is the name of the class)."""
        self.label = "Prepare for Reconcile and Post"
        self.description = "Create grandfather version of editor for DS"
        self.canRunInBackground = False

    def getParameterInfo(self):
    #Define parameter definitions
        params = []

    # First parameter
        param0 = arcpy.Parameter(
            displayName="Editor's Version Name",
            name="editor_full_versionname",
            datatype="GPString",
            parameterType="Required",
            direction="Input")

        param0.filter.type = "ValueList"
        param0.filter.list = [v.name for v in arcpy.da.ListVersions(r"\inpyosegis05DatabaseConnectionFilesDataStewardsOnlyYOSEGIS_VectorYOSE_DS.sde")
                              if v.name not in ["dbo.DEFAULT", "DS.Draft"]]  #Take DEFAULT and Draft off the drop-down list as choices.

    # Second parameter
        param1 = arcpy.Parameter(
            displayName="Data Steward's Initials",
            name="DS_initials",
            datatype="GPString",
            parameterType="Required",
            direction="Input")

        params = [param0, param1]
        return params

def isLicensed(self):
    """Set whether tool is licensed to execute."""
    return True

def updateParameters(self, parameters):
    """Modify the values and properties of parameters before internal
    validation is performed.  This method is called whenever a parameter
    has been changed."""
    param0 = arcpy.Parameter(
        displayName="Editor's Version Name",
        name="editor_full_versionname",
        datatype="GPString",
        parameterType="Required",
        direction="Input")

    param0.filter.type = "ValueList"
    param0.filter.list = [v.name for v in arcpy.da.ListVersions(r"\inpyosegis05DatabaseConnectionFilesDataStewardsOnlyYOSEGIS_VectorYOSE_DS.sde")
                          if v.name not in ["dbo.DEFAULT", "DS.Draft"]]  #Take DEFAULT and Draft off the drop-down list as choices.
    return