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.http import HttpResponse
from django.shortcuts import render
from django.shortcuts import get_object_or_404

from crispy_forms.helper import FormHelper
from crispy_forms.layout import Submit
from crispy_forms.layout import Layout, Fieldset, ButtonHolder, Submit


class MusicianList( ListView):
    model = Musician


class UserEditForm(forms.ModelForm):
    
    first_name = forms.CharField( max_length = 60)
    last_name  = forms.CharField( max_length = 60)
    email      = forms.EmailField()
    
    def __init__(self, *args, **kw):
        
        if 'instance' in kw.keys():
            user = kw['instance'].user
            initVals = { 'first_name': user.first_name, 
                         'last_name':  user.last_name,
                         'email':      user.email }
            if not 'initial' in kw.keys(): 
                kw['initial'] = initVals
            else:
                kw['initial'].update(initVals)
        
        super(UserEditForm, self).__init__(*args, **kw)
        
        self.helper = FormHelper()
        self.helper.form_id = 'id-exampleForm'
        self.helper.form_class = 'blueForms'
        self.helper.form_method = 'post'
        self.helper.form_action = '/musicians/martin' # TODO

        self.helper.add_input(Submit('submit', 'Submit'))
        
        self.helper.form_class = 'form-horizontal'
        #self.helper.layout = Layout(
        #    Fieldset(
        #        'Edit User',
        #        'first_name',
        #        'last_name',
        #        'birthday',
        #    ),
        #)
        
        
        
        self.fields.keyOrder.remove('first_name')
        self.fields.keyOrder.remove('last_name')
        self.fields.keyOrder.remove('email')
        
        self.fields.keyOrder.insert(0, 'first_name')
        self.fields.keyOrder.insert(1, 'last_name')    
        self.fields.keyOrder.insert(2, 'email')    

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