"""
This module collects models from sans.models packages and orders theses models 
by categories that GUI application understands and uses.

"""

import imp
import os
import sys
import math
# Time is needed by the log method
import time
import os.path
import wx
import wx.lib.newevent
from sans.guiframe.events import StatusEvent  
# Explicitly import from the pluginmodel module so that py2exe
# places it in the distribution. The Model1DPlugin class is used
# as the base class of plug-in models.
from sans.models.pluginmodel import Model1DPlugin

(ModelEvent, EVT_MODEL) = wx.lib.newevent.NewEvent()


def log(message):
    """
    """
    out = open("plugins.log", 'a')
    out.write("%10g:  %s\n" % (time.clock(), message))
    out.close()

def findModels():
    """
    """
    log("looking for models in: %s/plugins" % os.getcwd())
    if os.path.isdir('plugins'):
        return _findModels('plugins')
    return []
    
def _check_plugin(model, name):
    """
    Do some checking before model adding plugins in the list
    
    :param model: class model to add into the plugin list
    :param name: name of the module plugin
    
    :return model: model if valid model or None if not valid
    
    """
    #Check is the plugin is of type Model1DPlugin
    if not issubclass(model, Model1DPlugin):
        msg= "Plugin %s must be of type Model1DPlugin \n"%str(name)
        log(msg)
        return None
    if model.__name__!="Model":
        msg= "Plugin %s class name must be Model \n"%str(name)
        log(msg)
        return None
    try:
        new_instance= model()
    except:
        msg="Plugin %s error in __init__ \n\t: %s %s\n"%(str(name),
                                    str(sys.exc_type),sys.exc_value)
        log(msg)
        return None
   
    new_instance= model() 
    if hasattr(new_instance,"function"):
        try:
           value=new_instance.function()
        except:
           msg="Plugin %s: error writing function \n\t :%s %s\n "%(str(name),
                                    str(sys.exc_type),sys.exc_value)
           log(msg)
           return None
    else:
       msg="Plugin  %s needs a method called function \n"%str(name)
       log(msg)
       return None
    return model
  
  
def _findModels(dir):
    """
    """
    # List of plugin objects
    plugins = []
    # Go through files in plug-in directory
    try:
        list = os.listdir(dir)
        for item in list:
            toks = os.path.splitext(os.path.basename(item))
            if toks[1]=='.py' and not toks[0]=='__init__':
                name = toks[0]
            
                path = [os.path.abspath(dir)]
                file = None
                try:
                    (file, path, info) = imp.find_module(name, path)
                    module = imp.load_module( name, file, item, info )
                    if hasattr(module, "Model"):
                        try:
                            if _check_plugin(module.Model, name)!=None:
                                plugins.append(module.Model)
                        except:
                            msg="Error accessing Model"
                            msg+="in %s\n  %s %s\n" % (name,
                                    str(sys.exc_type), sys.exc_value)
                            log(msg)
                except:
                    msg="Error accessing Model"
                    msg +=" in %s\n  %s %s \n" %(name,
                                    str(sys.exc_type), sys.exc_value)
                    log(msg)
                finally:
              
                    if not file==None:
                        file.close()
    except:
        # Don't deal with bad plug-in imports. Just skip.
        pass
    return plugins

class ModelList(object):
    """
    Contains dictionary of model and their type
    
    """
    def __init__(self):
        self.mydict={}
        
    def set_list(self, name, mylist):
        """
        
        :param name: the type of the list
        :param mylist: the list to add
        
        """
        if name not in self.mydict.keys():
            self.mydict[name] = mylist
            
            
    def get_list(self):
        """
        return all the list stored in a dictionary object
        """
        return self.mydict
        
class ModelManager:
    """
    ModelManager collected model classes object of available into a 
    dictionary of models' names and models' classes.
    
    """
    ## external dict for models
    model_combobox = ModelList()
    ## Dictionary of form models
    form_factor_dict = {}
    ## dictionary of other
    struct_factor_dict = {}
    ##list of form factors
    shape_list =[]
    ## independent shape model list
    shape_indep_list = []
    ##list of structure factors 
    struct_list= []
    ##list of model allowing multiplication
    multiplication_factor=[]
    ##list of multifunctional shapes
    multi_func_list =[]
    ## list of added models
    plugins=[]
    ## Event owner (guiframe)
    event_owner = None
    
    def _getModelList(self):
        """
        Fill up lists of models available by default
        for the current application
    
        :return: the next free event ID following the new menu events
        
        """
        ## form factor
        from sans.models.SphereModel import SphereModel
        self.shape_list.append(SphereModel)
        self.multiplication_factor.append(SphereModel)
              
        from sans.models.BinaryHSModel import BinaryHSModel
        self.shape_list.append(BinaryHSModel)
        
        from sans.models.FuzzySphereModel import FuzzySphereModel
        self.shape_list.append(FuzzySphereModel)
        self.multiplication_factor.append(FuzzySphereModel)
           
        from sans.models.CoreShellModel import CoreShellModel
        self.shape_list.append(CoreShellModel)
        self.multiplication_factor.append(CoreShellModel)
        
        from sans.models.CoreMultiShellModel import CoreMultiShellModel
        self.shape_list.append(CoreMultiShellModel)
        self.multiplication_factor.append(CoreMultiShellModel)
        self.multi_func_list.append(CoreMultiShellModel)

        from sans.models.VesicleModel import VesicleModel
        self.shape_list.append(VesicleModel)
        self.multiplication_factor.append(VesicleModel)
        
        from sans.models.MultiShellModel import MultiShellModel
        self.shape_list.append(MultiShellModel)
        self.multiplication_factor.append(MultiShellModel)
        
        from sans.models.OnionExpShellModel import OnionExpShellModel
        self.shape_list.append(OnionExpShellModel)
        self.multiplication_factor.append(OnionExpShellModel)
        self.multi_func_list.append(OnionExpShellModel)  
        
        from sans.models.SphericalSLDModel import SphericalSLDModel
        self.shape_list.append(SphericalSLDModel)
        self.multiplication_factor.append(SphericalSLDModel)
        self.multi_func_list.append(SphericalSLDModel)
        
        
        from sans.models.CylinderModel import CylinderModel
        self.shape_list.append(CylinderModel)
        self.multiplication_factor.append(CylinderModel)
        
        from sans.models.CoreShellCylinderModel import CoreShellCylinderModel
        self.shape_list.append(CoreShellCylinderModel)
        self.multiplication_factor.append(CoreShellCylinderModel)
        
        from sans.models.HollowCylinderModel import HollowCylinderModel
        self.shape_list.append(HollowCylinderModel)
        self.multiplication_factor.append(HollowCylinderModel)
              
        from sans.models.FlexibleCylinderModel import FlexibleCylinderModel
        self.shape_list.append(FlexibleCylinderModel)

        from sans.models.FlexCylEllipXModel import FlexCylEllipXModel
        self.shape_list.append(FlexCylEllipXModel)
        
        from sans.models.StackedDisksModel import StackedDisksModel
        self.shape_list.append(StackedDisksModel)
        self.multiplication_factor.append(StackedDisksModel)
        
        from sans.models.ParallelepipedModel import ParallelepipedModel
        self.shape_list.append(ParallelepipedModel)
        self.multiplication_factor.append(ParallelepipedModel)
        
        from sans.models.CSParallelepipedModel import CSParallelepipedModel
        self.shape_list.append(CSParallelepipedModel)
        self.multiplication_factor.append(CSParallelepipedModel)
        
        from sans.models.EllipticalCylinderModel import EllipticalCylinderModel
        self.shape_list.append(EllipticalCylinderModel)
        self.multiplication_factor.append(EllipticalCylinderModel)
        
        from sans.models.BarBellModel import BarBellModel
        self.shape_list.append(BarBellModel)
        # not implemeted yet!
        #self.multiplication_factor.append(BarBellModel)
        
        from sans.models.CappedCylinderModel import CappedCylinderModel
        self.shape_list.append(CappedCylinderModel)
        # not implemeted yet!
        #self.multiplication_factor.append(CappedCylinderModel)
        
        from sans.models.EllipsoidModel import EllipsoidModel
        self.shape_list.append(EllipsoidModel)
        self.multiplication_factor.append(EllipsoidModel)
      
        from sans.models.CoreShellEllipsoidModel import CoreShellEllipsoidModel
        self.shape_list.append(CoreShellEllipsoidModel)
        self.multiplication_factor.append(CoreShellEllipsoidModel)
         
        from sans.models.TriaxialEllipsoidModel import TriaxialEllipsoidModel
        self.shape_list.append(TriaxialEllipsoidModel)
        self.multiplication_factor.append(TriaxialEllipsoidModel)
        
        from sans.models.LamellarModel import LamellarModel
        self.shape_list.append(LamellarModel)
        
        from sans.models.LamellarFFHGModel import LamellarFFHGModel
        self.shape_list.append(LamellarFFHGModel)
        
        from sans.models.LamellarPSModel import LamellarPSModel
        self.shape_list.append(LamellarPSModel)
     
        from sans.models.LamellarPSHGModel import LamellarPSHGModel
        self.shape_list.append(LamellarPSHGModel)
        
        from sans.models.LamellarPCrystalModel import LamellarPCrystalModel
        self.shape_list.append(LamellarPCrystalModel)
        
        from sans.models.SCCrystalModel import SCCrystalModel
        self.shape_list.append(SCCrystalModel)
        
        from sans.models.FCCrystalModel import FCCrystalModel
        self.shape_list.append(FCCrystalModel)
        
        from sans.models.BCCrystalModel import BCCrystalModel
        self.shape_list.append(BCCrystalModel)
      
        ## Structure factor 
        from sans.models.SquareWellStructure import SquareWellStructure
        self.struct_list.append(SquareWellStructure)
        
        from sans.models.HardsphereStructure import HardsphereStructure
        self.struct_list.append(HardsphereStructure)
         
        from sans.models.StickyHSStructure import StickyHSStructure
        self.struct_list.append(StickyHSStructure)
        
        from sans.models.HayterMSAStructure import HayterMSAStructure
        self.struct_list.append(HayterMSAStructure)
        
        
        ##shape-independent models
            
        from sans.models.PowerLawAbsModel import PowerLawAbsModel
        self.shape_indep_list.append( PowerLawAbsModel )
        
        from sans.models.BEPolyelectrolyte import BEPolyelectrolyte
        self.shape_indep_list.append(BEPolyelectrolyte )
        self.form_factor_dict[str(wx.NewId())] =  [SphereModel]
        
        from sans.models.BroadPeakModel import BroadPeakModel
        self.shape_indep_list.append(BroadPeakModel)
        
        from sans.models.CorrLengthModel import CorrLengthModel
        self.shape_indep_list.append(CorrLengthModel)
        
        from sans.models.DABModel import DABModel
        self.shape_indep_list.append(DABModel )
        
        from sans.models.DebyeModel import DebyeModel
        self.shape_indep_list.append(DebyeModel )
        
        #FractalModel (a c-model)is now being used instead of FractalAbsModel.
        from sans.models.FractalModel import FractalModel
        self.shape_indep_list.append(FractalModel )
        
        from sans.models.FractalCoreShellModel import FractalCoreShellModel
        self.shape_indep_list.append(FractalCoreShellModel )
        
        from sans.models.GaussLorentzGelModel import GaussLorentzGelModel
        self.shape_indep_list.append(GaussLorentzGelModel) 
                
        from sans.models.GuinierModel import GuinierModel
        self.shape_indep_list.append(GuinierModel )
        
        from sans.models.GuinierPorodModel import GuinierPorodModel
        self.shape_indep_list.append(GuinierPorodModel )

        from sans.models.LorentzModel import LorentzModel
        self.shape_indep_list.append( LorentzModel) 
        
        from sans.models.PeakGaussModel import PeakGaussModel
        self.shape_indep_list.append(PeakGaussModel)
        
        from sans.models.PeakLorentzModel import PeakLorentzModel
        self.shape_indep_list.append(PeakLorentzModel)
        
        from sans.models.Poly_GaussCoil import Poly_GaussCoil
        self.shape_indep_list.append(Poly_GaussCoil)
        
        from sans.models.PolymerExclVolume import PolymerExclVolume
        self.shape_indep_list.append(PolymerExclVolume)
        
        from sans.models.PorodModel import PorodModel
        self.shape_indep_list.append(PorodModel )      
        
        from sans.models.RPA10Model import RPA10Model
        self.shape_indep_list.append(RPA10Model)
        self.multi_func_list.append(RPA10Model)
        
        from sans.models.TeubnerStreyModel import TeubnerStreyModel
        self.shape_indep_list.append(TeubnerStreyModel )
        
        from sans.models.TwoLorentzianModel import TwoLorentzianModel
        self.shape_indep_list.append(TwoLorentzianModel )
        
        from sans.models.TwoPowerLawModel import TwoPowerLawModel
        self.shape_indep_list.append(TwoPowerLawModel )
        
        from sans.models.UnifiedPowerRgModel import UnifiedPowerRgModel
        self.shape_indep_list.append(UnifiedPowerRgModel )
        self.multi_func_list.append(UnifiedPowerRgModel)
        
        from sans.models.LineModel import LineModel
        self.shape_indep_list.append(LineModel)
        
        from sans.models.ReflectivityModel import ReflectivityModel
        self.multi_func_list.append(ReflectivityModel)
        
        from sans.models.ReflectivityIIModel import ReflectivityIIModel
        self.multi_func_list.append(ReflectivityIIModel)
        
        #Looking for plugins
        self.plugins = findModels()
        self._get_multifunc_models()
        self.plugins.append(ReflectivityModel)
        self.plugins.append(ReflectivityIIModel)
        return 0

    def get_model_list(self):    
        """ 
        :return: dictionary of models for fitpanel use 
        
        """
        self._getModelList()
        self.model_combobox.set_list("Shapes", self.shape_list)
        self.model_combobox.set_list("Shape-Independent", self.shape_indep_list)
        self.model_combobox.set_list("Structure Factors", self.struct_list)
        self.model_combobox.set_list("Customized Models", self.plugins)
        self.model_combobox.set_list("P(Q)*S(Q)", self.multiplication_factor)
        self.model_combobox.set_list("multiplication", self.multiplication_factor)
        self.model_combobox.set_list("Multi-Functions", self.multi_func_list)
        return self.model_combobox
        
    def _get_multifunc_models(self):
        """
        Get the multifunctional models
        """
        for item in self.plugins:
            try:
                # check the multiplicity if any
                if item.multiplicity_info[0] > 1:
                    self.multi_func_list.append(item)
            except:
                # pass to other items
                pass