import random

import string

import os

from django.core.files.storage import FileSystemStorage

from django.db import models

from django.contrib.auth.models import User

import tagging

from tagging.fields import TagField

GENDER_CHOICES = (( 'M', 'Male'), ('F', 'Female'))

RIGHTS_CHOICES = (

	("AD", "Admin"),

	("MG", "Manager"),

	("DV", "Developer"),

	("CT", "Contributor"),)

STATUS_CHOICES = (

    ("UP", "Unpublished"),

    ("OP", "Open"),

    ("LO", "Locked"),

    ("WR", "Working"),

    ("CD", "Closed"),

    ("DL", "Deleted"),

    ("CM", "Completed"))

IMAGES_DIR = "./images"

UPLOADS_DIR = "./uploads"

class CustomImageStorage(FileSystemStorage):

    def path(self, name):

        """ we return images directory path.

        """

        return os.path.join(IMAGES_DIR, name)

    def get_available_name(self, name):

        """ here we are going with username as the name of image.

        """

        root, ext = os.path.splitext(name)

        name = ''.join([ random.choice(string.uppercase+string.digits) for i in range(10)])+ext

        while self.exists(name):

            name = ''.join([ random.choice(string.uppercase+string.digits) for i in range(10)])+ext

        return name

class Profile(models.Model):

    user = models.ForeignKey(User, unique = True)

    dob = models.DateField(verbose_name = u"Date of Birth", help_text = "YYYY-MM-DD")

    gender = models.CharField(max_length = 1, choices = GENDER_CHOICES)

    rights = models.CharField(max_length = 2, choices = RIGHTS_CHOICES, default = u"CT")

    credits = models.PositiveSmallIntegerField(default = 0)

    aboutme = models.TextField(blank = True)

#    foss_comm = models.CharField(max_length = 80, blank = True, verbose_name = u"Foss Communities", help_text = u"Comma seperated list of foss communities you are involved in.")

    foss_comm = TagField()

    phonenum = models.CharField(max_length = 15, blank = True, verbose_name = u"Phone Number")

    homepage = models.URLField(blank = True, verbose_name = u"Homepage/Blog")

    street = models.CharField(max_length = 80, blank = True)

    city = models.CharField(max_length = 25, blank = True)

    country = models.CharField(max_length = 25, blank = True)

    nick = models.CharField(max_length = 20, blank = True)

    photo = models.ImageField(storage = CustomImageStorage(),upload_to = IMAGES_DIR, blank = True)

    def __unicode__(self):

        return unicode(self.user.username)

class Task(models.Model):

    title = models.CharField(max_length = 100, unique = True, verbose_name = u"Title", help_text = u"Keep it simple and below 100 chars.")

    desc = models.TextField(verbose_name = u"Description")

    status = models.CharField(max_length = 2, choices = STATUS_CHOICES, default = "UP")

#    tags = models.CharField(max_length = 200, blank = True)

    tags_field = TagField()

    credits = models.PositiveSmallIntegerField()

    progress = models.PositiveSmallIntegerField(default = 0)

    mentors = models.ManyToManyField(User, related_name = "%(class)s_mentors")

    created_by = models.ForeignKey(User, related_name = "%(class)s_created_by")

    claimed_users = models.ManyToManyField(User, blank = True, related_name = "%(class)s_claimed_users")

    assigned_users = models.ManyToManyField(User, blank = True, related_name = "%(class)s_assigned_users")

    creation_datetime = models.DateTimeField()

    sub_type = models.CharField(max_length=1, choices = (('D','Dependency'),('S','Subtask')), default = 'D')   

    #is_claimable = models.BooleanField()

    ## not yet decided if attribs after this are to be included

    ## tasktype = "" ## "bugfix"/"enhancement"

    ## priority = "" ## "very urgent"/"urgent"

    def __unicode__(self):

        return unicode(self.title)

class Map(models.Model):

    main = models.ForeignKey('Task', related_name = "%(class)s_main")

    subs = models.ManyToManyField('Task', blank = True, null = True, related_name = "%(class)s_subs")

class Comment(models.Model):

    task = models.ForeignKey('Task')

    data = models.TextField()

    created_by = models.ForeignKey(User, related_name = "%(class)s_created_by")

    creation_datetime = models.DateTimeField()

    deleted_by = models.ForeignKey(User, null = True, blank = True, related_name = "%(class)s_deleted_by")

    is_deleted = models.BooleanField()

    attachment = models.FileField(upload_to = UPLOADS_DIR, blank = True)

    def __unicode__(self):

        return unicode(self.task.title)

class Credit(models.Model):

    task = models.ForeignKey('Task')

    given_by = models.ForeignKey(User, related_name = "%(class)s_given_by")

    given_to = models.ForeignKey(User, related_name = "%(class)s_given_to")

    points = models.PositiveSmallIntegerField()

    given_time = models.DateTimeField()

    def __unicode__(self):

        return unicode(self.task.title)

class Claim(models.Model):

    task = models.ForeignKey('Task')

    user = models.ForeignKey(User)

    message = models.TextField()

    creation_datetime = models.DateTimeField()

class Request(models.Model):

    sent_to = models.ManyToManyField(User, related_name = "%(class)s_sent_to", blank = False)

    sent_by = models.ForeignKey(User, related_name = "%(class)s_sent_by", blank = False)

    role = models.CharField(max_length = 2, blank = False)

    reply = models.BooleanField(default = False)

    remarks = models.TextField(default = "",blank = True)

    is_read = models.BooleanField(default = False)

    creation_date = models.DateTimeField()

    reply_date = models.DateTimeField()

    is_replied = models.BooleanField(default = False)

    replied_by = models.ForeignKey(User, related_name = "%(class)s_replied_by", blank = True, null = True)

    task = models.ForeignKey(Task,related_name = "%(class)s_task", blank = True, null = True)

    receiving_user = models.ForeignKey(User, related_name = "%(class)s_receiving_user", blank = True, null = True)

    pynts = models.PositiveIntegerField(default=0)

    def __unicode__(self):

        return u"Request %s %s"%(self.sent_by.username, self.role)

class Notification(models.Model):

    to = models.ManyToManyField(User, related_name = "%(class)s_to", blank = False)

    is_read = models.BooleanField(default = False)

    sent_date = models.DateTimeField()

    sub = models.CharField(max_length = 100)

    message = models.TextField()

    deleted = models.BooleanField(default = False)

tagging.register(Profile)

tagging.register(Task)