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

from crispy_forms.helper import FormHelper
from crispy_forms.layout import 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/'