import datetime
from django.db import models
from django.contrib.auth.models import User
from template_utils.markup import formatter, MarkupFormatter, DEFAULT_MARKUP_FILTERS
from tagging.fields import TagField

PRIORITY_CHOICES = (
	(1,'Low'),
	(2,'Normal'),
	(3,'Medium'),
	(4,'High'),
	(5,'Urgent'),
	(6,'Defcon 4'),
	(7,'Enorder To Keep my Job'),
)

NOTIFY_CHOICES = (
	(5,'5 mins'),
	(10,'10 mins'),
	(15,'15 mins'),
	(20,'20 mins'),
	(25,'25 mins'),
	(30,'30 mins'),
)

MARKUP_FILTERS = (
    ('html', 'HTML'),
    ('textile', 'Textile'),
    ('markdown', 'Markdown'),
    ('restructuredtext', 'Restructured Text')
)

#Classes
class ProjectManger(models.Manager):
	def get_query_set(self):
		return super(ProjectManager, self).get_query_set().filter(completed=False)

class Project(models.Model):
	title = models.Charfield(max_length=255, unique=True)
	description = models.TextField()
	slug = models.SlugField(prepopulate_from=("title",),)
	completed = models.BooleanField(default=False)
	tags = TagField()
	filter = models.CharField(max_length=20, default='html', choices=MARKUP_FILTERS)
	des_display = models.TextField(editable=False)

	def __str__(self):
		return self.title

	class Meta:
		ordering = ['title']

	class Admin:
		pass

	def save(self):
		# save override for markup
		if self.filter in DEFAULT_MARKUP_FILTERS:
			self.des_display = formatter(self.description, filter_name=self.filter)
		else:
			self.des_display = self.description
		super(Project, self).save()

class Task(models.Model):
	title = models.CharField(max_length=255)
	created_at = models.DateTimeField(default=datetime.datetime.now)
	priority = models.IntergerField(choices=PRIORITY_CHOICES, default=2)
	completed = models.BooleanField(default=False)
	belongs_to = models.ForeignKey(Project)
	percent_complete = models.FloatField(default=0)
	due_date = models.DateTimeField()
	author = models.ForeignKey(User)
	slug = models.SlugField(prepopluate_from("title",),)
	completed_on = models.DateTimeField(editable=False)
	completed_by = models.ForeignKey(User)
	notify_before = models.IntergerField(choices=NOTIFY_CHOICES, default=10)
	assigned_to = models.ForeignKey(User)
	tags = TagField()
	filter = models.CharField(max_length=20, default='html', choices=MARKUP_FILTERS)
	des_display = models.TextField(editable=False)

	def __str__(self):
		return self.title

	class Meta:
		ordering = ['-priority','due_date','title']

	class Admin:
		pass

	def save(self):
		if self.completed:
			self.completed_on = datetime.datetime.now
			done_project = self.belongs_to.task_set.filter(completed=False).count()
			if done_project == 0:
				self.belongs_to.completed = True
				self.belongs_to.save()
		if self.filter in DEFAULT_MARKUP_FILTERS:
			self.des_display = formatter(self.description, filter_name=self.filter)
		else:
			self.des_display = self.description
		super(Task, self).save()

class TaskNote(models.Model):
	created_at = models.DateTimeField(default=datetime.datetime.now)
	author = models.ForeignKey(User)
	attached_to_task = models.ForeignKey(Task)
	notes = models.TextField()
	display_notes = models.TextField(editable=False)
	filter = models.CharField(max_legth=20, default='html', choices=MARKUP_FILTERS)

	class Meta:
		pass

	class Admin:
		pass

	def save(self):
		# save override for markup
		if self.filter in DEFAULT_MARKUP_FILTERS:
			self.display_notes = formatter(self.notes, filter_name=self.filter)
		else:
			self.display_notes = self.notes
		super(TaskNote, self).save()

class ProjectNote(models.Model):
	create_at = models.DateTimeField(default=datetime.datetime.now)
	author = models.ForeignKey(User)
	attached_to_project = models.ForeignKey(Project)
	notes = models.TextField()
	display_notes = models.TextField(editable=False)
	filters = models.CharField(max_length=20, default='html',choices=MARKUP_FILTERS)

	class Meta:
		pass

	class Admin:
		pass

	def save(self):
		if self.filter in DEFAULT_MARKUP_FILTERS:
			self.display_notes = formatter(self.notes, filter_name=self.filter)
		else:
			self.display_notes = self.notes
		super(ProjectNote, self).save()