from django.db import models
from tagging.fields import TagField
from django.core.paginator import Paginator, InvalidPage, EmptyPage
from app.models import ItfModel
from django.forms import ModelForm
# from django.forms import 
# import forms



class BestPractice(ItfModel):
  title = models.CharField(max_length=512) 
  story = models.TextField()
  guideline = models.TextField(blank=True)
  guidelines = models.ManyToManyField("Guideline", null=True, blank=True)
  law = models.TextField(blank=True)
  law_image = models.ImageField(upload_to='upload/images/bestpractices/law/', blank=True, null=True)
  theatre = models.TextField(blank=True, help_text="Spotlight on Theatre text")
  quick_howto = models.TextField(blank=True)
  tags = TagField(blank=True, help_text="Enter as many tags as you like, separated by commas.")
  category = models.ForeignKey("BestPracticeCategory", null=True)
  added = models.DateTimeField(auto_now_add=True, null=True)  
  modified = models.DateTimeField(auto_now=True, null=True)

  fts_fields = ['title', 'story', 'guideline', 'law', 'theatre', 'quick_howto']           
  fk_filters = ['category']
  sort_fields = ['title']
  add_form = "BestPracticeForm"

  getters = ['info_dict', 'list_dict', 'no_of_stories']

  def __unicode__(self):
    return str(self.id) + ": " + self.title



  def info_dict(self):
    return {
      'id': self.id,
      'title': self.title,
      'story': self.story,
      'stories': map(lambda x: x.get_dict(), BestPracticeStory.objects.filter(bestpractice=self)),
      'guideline': self.guideline,
      'law': self.law,
      'law_image': self.law_image.url if self.law_image.name != '' else '', 
      'theatre': self.theatre,
      'quick_howto': self.quick_howto,
      'category': self.category.name,
      'category_id': self.category.id,
      'images': self.get_images(),
      'links': BestPracticeLink.objects.filter(bestpractice=self)
    }

  def main_image(self):
    imgs = self.get_images()
    if len(imgs) > 0:
        img = imgs[0]
        return img.image
    else:
        return None

  def list_dict(self):
    return {
      'id': self.id,
      'title': self.title,
      'category': self.category.name,
    }

  def preview_dict(self):
    return {      
      'id': self.id,
      'title': self.title,
      'category': self.category.name,
      'story': self.story,
      'images': self.get_images()
    }

  def get_images(self):
    images = []
    for i in BestPracticeImage.objects.filter(bestpractice=self):
      images.append(i)
      '''
      images.append({
        'url': i.image.url,
        'caption': i.caption,
        'thumb': i.get_thumb() 
      })
      '''
    return images

  '''
  Model get methods (getters)
  '''
  def no_of_stories(self):
    return BestPracticeStory.objects.filter(bestpractice=self).count()


class BestPracticeDownload(models.Model):
  language = models.CharField(max_length=255)
  fil = models.FileField(upload_to="upload/bestpractices_downloads/")


class BestPracticeStory(models.Model):
  text = models.TextField()
  image = models.ImageField(upload_to='upload/images/bestpractices/stories/', blank=True, null=True)
  bestpractice = models.ForeignKey(BestPractice)
  
  def __unicode__(self):
    return self.text

  def get_dict(self):
    return {
      'text': self.text,
      'image': self.image if self.image.name != '' else None
    }

class BestPracticeFAQ(ItfModel):
  question = models.TextField()
  answer = models.TextField()

  title_field = 'question'

  def __unicode__(self):
    return self.question

  def list_dict(self):
    return {
      'id': self.id,
      'question': self.question,
      'answer': self.answer,
    }

  def info_dict(self):
    return {
      'id': self.id,
      'question': self.question,
      'answer': self.answer
    }

  
class BestPracticeCategory(models.Model):
  name = models.CharField(max_length=256)
  description = models.TextField(blank=True)

  def __unicode__(self):
    return self.name

  def get_dict(self):
    return {
      'name': self.name,
      'description': self.description
    }

class BestPracticeLink(ItfModel):
  url = models.URLField()
  text = models.TextField(blank=True)
  bestpractice = models.ForeignKey(BestPractice)

  def get_dict(self):
    return {
      'url': self.url,
      'text': self.text
    }

  def list_dict(self):
    return {
      'id': self.id,
      'text': self.text,
      'url': self.url,
    }

  def __unicode__(self):
    return self.url

class BestPracticeImage(models.Model):
  image = models.ImageField(upload_to='upload/images/bestpractices/')
  caption = models.CharField(max_length=512, blank=True)
  bestpractice = models.ForeignKey(BestPractice)

  def get_dict(self):
    return {
      'image': self.image.url,
      'caption': self.caption,
    }

  def __unicode__(self):
    return self.caption

  def get_thumb(self, max_width='200'):    
    return self.image.url #FIXME!!

class Guideline(ItfModel):
  title = models.CharField(max_length=512)
  text = models.TextField()
  
  def get_dict(self):
    return {
      'title': self.title,
      'text': self.text
    }

  def list_dict(self):
    return {
      'id': self.id,
      'title': self.title,
    }

  def info_dict(self):
    return {
      'id': self.id,
      'title': self.title,
      'text': self.text  
    }

  def __unicode__(self):
    return self.title


class Glossary(models.Model):
  term = models.CharField(max_length=256)
  definition = models.TextField()

  def get_dict(self):
    return {
      'term': self.term,
      'definition': self.definition
    }

  def list_dict(self):
    return {
      'id': self.id,
      'term': self.term,
      'definition': self.definition
    }  

  def __unicode__(self):
    return self.term