from django.views.generic.edit import UpdateView
from django.views.generic import ListView
from musicians.models import Musician 
from django import forms
from django.http import HttpResponseRedirect
from django.shortcuts import render
from django.shortcuts import get_object_or_404


class MusicianList( ListView):
    model = Musician


class UserEditForm(forms.ModelForm):
    
    email      = forms.EmailField()
    
    def __init__(self, *args, **kw):
        
        if 'instance' in kw.keys():
            user = kw['instance'].user
            initVals = { 'email':      user.email }
            if not 'initial' in kw.keys(): 
                kw['initial'] = initVals
            else:
                kw['initial'].update(initVals)
        
        super(UserEditForm, self).__init__( *args, **kw )

        
        self.fields.keyOrder.remove('email')
        
        self.fields.keyOrder.insert(2, 'email')    

    def save(self):
        if self.is_valid():
            super(UserEditForm,self).save()
            self.instance.user.email      =  self.cleaned_data['email']
            self.instance.user.save()
        
    class Meta:
        model  = Musician
        exclude = [ 'user','image', 'instrument' ]
        #fields = '__all__'
        


def user_edit( request, username ):
    musician = get_object_or_404( Musician, user__username=username )
    
    if request.method == 'POST': # If the form has been submitted...
        form = UserEditForm(request.POST) # A form bound to the POST data
        form.instance = musician
        if form.is_valid(): # All validation rules pass
            form.save()
            return HttpResponseRedirect('/musicians/' + username) # Redirect after POST
    else:
        form = UserEditForm( instance= musician )

    return render(request, 'musicians/musician_edit.html', { 'form': form, }  )
    


class MusicianUpdate( UpdateView ):
    model = Musician
    #fields = []
    template_name = "musicians/musician_edit.html"
    success_url = '/books/'