from django.db import models

from django.contrib.auth.models import User

import tagging

from tagging.fields import TagField

TASK_STATUS_CHOICES = (

        ("UP", "Unpublished"),

        ("OP", "Open"),

        ("LO", "Locked"),

        ("WR", "Working"),

        ("CD", "Closed"),

        ("DL", "Deleted"),

        ("CM", "Completed"))

TB_STATUS_CHOICES = (

    ("UP", "Unpublished"),

    ("OP", "Open"),

    ("WR", "All tasks have users selected"),

    ("CM", "Completed"))

UPLOADS_DIR = "./pytask/static/uploads"

class Task(models.Model):

    title = models.CharField(max_length = 100, 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 = TASK_STATUS_CHOICES, default = "UP")

    tags_field = TagField(verbose_name = u"Tags", 

                          help_text = u"Give tags seperated by commas") 

    pynts = models.PositiveSmallIntegerField(help_text = u"No.of pynts a user \

                                             gets on completing the task")

    created_by = models.ForeignKey(User,

                                   related_name = "created_tasks")

    approved_by = models.ForeignKey(User, blank = True, null = True,

                                    related_name = "approved_tasks")

    reviewers = models.ManyToManyField(User, blank = True, null = True,

                                       related_name = "reviewing_tasks")

    claimed_users = models.ManyToManyField(User, blank = True, null = True, 

                                           related_name = "claimed_tasks")

    selected_users = models.ManyToManyField(User, blank = True, null = True, 

                                            related_name = "selected_tasks")

    creation_datetime = models.DateTimeField()

    approval_datetime = models.DateTimeField(blank = True, null = True)

    def __unicode__(self):

        return unicode(self.title)

class TaskComment(models.Model):

    task = models.ForeignKey('Task', related_name = "comments")

    data = models.TextField(verbose_name="")

    commented_by = models.ForeignKey(User,

                                     related_name = "commented_taskcomments")

    deleted_by = models.ForeignKey(User, null = True, blank = True,

                                   related_name = "deleted_taskcomments")

    comment_datetime = models.DateTimeField()

    is_deleted = models.BooleanField(default=False)

    def __unicode__(self):

        return unicode(self.task.title)

class TaskClaim(models.Model):

    task = models.ForeignKey('Task', related_name = "claims")

    claimed_by = models.ForeignKey(User,

                                   related_name = "claimed_claims")

    proposal = models.TextField()

    claim_datetime = models.DateTimeField()

    def __unicode__(self):

        return unicode(self.task.title)

class WorkReport(models.Model):

    task = models.ForeignKey(Task, related_name = "reports")

    submitted_by = models.ForeignKey(User, null = True, blank = True,

                                     related_name = "submitted_reports")

    approved_by = models.ForeignKey(User, null = True, blank = True,

                                    related_name = "approved_reports")

    data = models.TextField(verbose_name="Report")

    summary = models.CharField(max_length=100, verbose_name="Summary",

                               help_text="A one line summary")

    attachment = models.FileField(upload_to = UPLOADS_DIR)

    revision = models.PositiveIntegerField(default=0)

    submitted_at = models.DateTimeField()

class ReportComment(models.Model):

    report = models.ForeignKey('WorkReport', related_name = "%(class)s_report")

    data = models.TextField()

    commented_by = models.ForeignKey(User, 

                                     related_name = "commented_reportcomments")

    deleted_by = models.ForeignKey(User, null = True, blank = True,

                                   related_name = "deleted_reportcomments")

    comment_datetime = models.DateTimeField()

    is_deleted = models.BooleanField(default=False)

class PyntRequest(models.Model):

    task = models.ForeignKey(Task, related_name = "pynt_requests")

    pynts = models.PositiveIntegerField(default=0, help_text="No.of pynts")

    requested_by = models.ForeignKey(User, 

                                     related_name = "requested_by_pynts")

    requested_for = models.ForeignKey(User, 

                                     related_name = "requested_for_pynts")

    responded_by = models.ForeignKey(User, null = True, blank = True,

                                    related_name = "responded_requests")

    is_accepted = models.BooleanField(default=False)

    remarks = models.CharField(max_length=100, blank=True,

                               help_text="Reason in case of rejection")

    request_datetime = models.DateTimeField()

    is_responded = models.BooleanField(default=False)

class TextBook(models.Model):

    name = models.CharField(max_length = 100)

    chapters = models.ManyToManyField(Task, related_name="textbooks")

    tags_field = TagField(verbose_name="Tags")

    created_by = models.ForeignKey(User, related_name = "created_textbooks")

    approved_by = models.ForeignKey(User, null = True, blank = True,

                                    related_name = "approved_textbooks")

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

    creation_datetime = models.DateTimeField()

    approval_datetime = models.DateTimeField(blank = True, null = True)

tagging.register(Task)

tagging.register(TextBook)