#  Episodes.Community - Community-Driven TV Show Episode Link Sharing Site
#  Copyright (C) 2017  Evert "Diamond" Prants <evert@lunasqu.ee>, Taizo "Tsa6" Simpson <taizo@tsa6.net>
#
#  This program is free software: you can redistribute it and/or modify
#  it under the terms of the GNU Affero General Public License as
#  published by the Free Software Foundation, either version 3 of the
#  License, or (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU Affero General Public License for more details.
#
#  You should have received a copy of the GNU Affero General Public License
#  along with this program.  If not, see <https://www.gnu.org/licenses/>.

from django.db import models
from django.contrib.auth.models import AbstractUser
from django.core.files.storage import FileSystemStorage
from django.conf import settings
import os

def name_artwork(inst, name):
    return '%s/artwork.%s'%(inst.abbr,name.split('.')[-1])
def name_css(inst, name):
    return '%s/style.css'%inst.abbr
def name_banner(inst, name):
    return '%s/banner.%s'%(inst.abbr,name.split('.')[-1])
def name_season_artwork(inst, name):
    return '%s/%d/artwork.%s'%(inst.show.abbr,inst.number,name.split('.')[-1])
show_static_storage = FileSystemStorage(location=os.path.join(os.path.dirname(settings.MEDIA_ROOT), 'uploaded_resources'), base_url='showstatic')

# Create your models here.
class TimestampedModel(models.Model):
    timestamp = models.DateTimeField(
            auto_now=True,
            help_text='The date and time this object was created'
    )
    class Meta:
        abstract = True

class Show(TimestampedModel):
    name = models.CharField(
            max_length=40,
            help_text="The full name of the show",
            verbose_name="Full Name"
    )
    abbr = models.SlugField(
            max_length=5,
            unique=True,
            help_text="A short abbreviation of the show, for use in urls",
            verbose_name="Abbreviation"
    )
    description = models.TextField(
            help_text="A description of the show",
            verbose_name="Description"
    )
    release = models.DateField(
            help_text="The release date of the first episode of the show",
            verbose_name="Release Date"
    )
    artwork = models.ImageField(
            storage=show_static_storage,
            upload_to = name_artwork,
            help_text="The artwork associated with the show.  Should display the name of the show in a movie-poster esque format.  Aspect ration should be about 2:3",
            verbose_name="Artwork"
    ) 
    imdb = models.URLField(
            help_text="The url of the IMDb page for this show",
            verbose_name="IMDb Page"
    )
    moderated = models.BooleanField(
            help_text="Whether or not this show is user-moderated",
            verbose_name="User Moderated"
    )
    css = models.FileField(
            storage=show_static_storage,
            upload_to=name_css,
            help_text="The CSS stylesheet applied to this show's page",
            verbose_name="Custom Style"
    )
    banner = models.ImageField(
            storage=show_static_storage,
            upload_to = name_banner,
            help_text="A banner used for the show's page.",
            verbose_name="Banner"
    )

    class Meta:
        permissions = (
            ('can_create_show_ban', 'Can ban an user from submitting to this show'),
            ('can_moderate_show', 'Can add episodes, seasons and unrestricted submissions'),
        )

    def __str__(self):
        return '%s [%s]'%(self.name,self.abbr)

class User(AbstractUser):
    icy_id = models.CharField(
            max_length=36,
            help_text='The UUID assigned to this user by IcyNet\'s auth servers'
    )
    display_name=models.CharField(
            max_length=20,
            help_text="The name shown to other users",
            verbose_name="Display Name"
    )
    favorites=models.ManyToManyField(
            'Episode',
            related_name='favorited_by',
            through='Favorite'
    )
    watches=models.ManyToManyField(
            'Episode',
            related_name='watched_by',
            through='Watch'
    )

class Ban(TimestampedModel):
    user = models.OneToOneField(
            User,
            on_delete=models.CASCADE,
            help_text="The user this ban applies to",
            verbose_name="Banned User"
    )
    admin = models.ForeignKey(
            User,
            on_delete=models.SET_NULL,
            null=True,
            help_text='The admin which banned this user',
            verbose_name='Banned By',
            related_name='bans'
    )
    reason = models.CharField(
            max_length=50,
            blank=True,
            help_text='The reason this user was banned',
            verbose_name='Ban Reason'
    )
    expiration = models.DateField(
            help_text='The date this user will become unbanned',
            blank=True,
            verbose_name='Expiration Date'
    )
    permanent = models.BooleanField(
            help_text='If checked, this user will never be unbanned, even if the expiration date passes',
            verbose_name='Permanent'
    )
    scope = models.ManyToManyField(
            Show,
            blank=True,
            help_text='The shows this user is banned from interacting with',
            verbose_name='Banned From',
            related_name='bans'
    )
    site_wide = models.BooleanField(
            help_text='If checked, this is a site-wide ban, and the user is automatically banned from all shows, not just those in the Banned From (scope) paramenter',
            verbose_name = 'Site Wide Ban'
    )
    def __str__(self):
        return ("Permanent" if self.permanent else "Temporary") + " ban of %s"%self.user

class ShowModerator(TimestampedModel):
    show = models.ForeignKey(
            Show,
            on_delete=models.CASCADE,
            help_text='The show this user moderates',
            verbose_name='Moderated Show',
            related_name='moderators',
    )
    user = models.ForeignKey(
            User,
            on_delete=models.CASCADE,
            help_text='The user who moderates this show',
            verbose_name='Moderator',
            related_name='moderated_shows'
    )
    appointed_by = models.ForeignKey(
            User,
            on_delete=models.SET_NULL,
            related_name='appointed_mods',
            null=True,
            help_text='The user who appointed this moderator',
            verbose_name='Appointed by'
    )
    def __str__(self):
        return "%s on %s"%(self.user,self.show.abbr)

class Report(TimestampedModel):
    reporter = models.ForeignKey(
            User,
            on_delete=models.SET_NULL,
            null=True,
            related_name='reports',
            help_text='The user who created this report',
            verbose_name='Reporter'
    )
    title = models.CharField(
            max_length=50,
            help_text='A brief summary of the report',
            verbose_name='Title'
    )
    details = models.TextField(
            help_text='The details of the report, preferably including why the content should be removed',
            verbose_name = 'Details'
    )
    url = models.URLField(
            max_length=100,
            help_text='The URL of the content being reported',
            verbose_name = 'Content URL'
    )
    def __str__(self):
        return "%s's report of %s"%(self.reporter, self.url)

class ShowSubmission(TimestampedModel):
    user = models.ForeignKey(
            User,
            on_delete=models.CASCADE,
            related_name='show_submissions',
            help_text='The user who submitted this show',
            verbose_name='Submitter'
    )
    name = models.CharField(
            max_length=40,
            help_text="The full name of the show",
            verbose_name="Full Name"
    )
    details = models.TextField(
            help_text='Some details about the show.  Why it should be added, where information about it can be found, etc.',
            verbose_name='Details'
    )
    def __str__(self):
        return '"%s" by %s'%(self.name, self.user)

class Season(models.Model):
    show = models.ForeignKey(
            'Show',
            on_delete=models.CASCADE,
            related_name='seasons',
            help_text='The show this season belongs to'
    )
    name = models.CharField(
            max_length=40,
            blank=True,
            help_text='The name given to this season by its producers.  Can be blank if no name was given',
            verbose_name='Season Name'
    )
    number = models.IntegerField(
            help_text='The number of this season, starting at 1; For example, the first season to be aired would be number 1, and the second would be number 2'
    )
    description = models.TextField(
            help_text='A description of this season\'s happenings'
    )
    artwork = models.ImageField(
            storage=show_static_storage,
            upload_to = name_season_artwork,
            help_text="The artwork associated with the season.  Should display the name of the show in a movie-poster esque format.  Aspect ration should be about 2:3",
            verbose_name="Artwork",
            blank=True
    ) 
    def __str__(self):
        return self.show.name + " S%d"%self.number

class Episode(models.Model):
    show = models.ForeignKey(
            'Show',
            on_delete=models.CASCADE,
            related_name='episodes',
            help_text='The show this episode belongs to'
    )
    season = models.ForeignKey(
            Season,
            on_delete=models.CASCADE,
            related_name='episodes',
            help_text='The season this episode is from'
    )
    episode = models.IntegerField(
            help_text='The position of this episode in the season.  The first episode of the season to air would be episode number 1',
            verbose_name='Episode Number'
    )
    name = models.CharField(
            max_length=40,
            help_text='The name given to this episode by its producers',
            verbose_name='Episode Name'
    )
    summary = models.TextField(
            help_text='A summary of this episode'
    )
    airdate = models.DateField(
            help_text='The date this episode officially aired for the first time',
            verbose_name='Original Air Date'
    )
    def __str__(self):
        return "[s%dep%d] %s — %s"%(self.season.number,self.episode,self.show.name, self.name) 

class Submission(TimestampedModel):
    episode = models.ForeignKey(
            Episode,
            on_delete=models.CASCADE,
            related_name='submissions',
            help_text='What episode this link contains a mirror of',
            verbose_name='Submitted For'
    )
    user = models.ForeignKey(
            User,
            on_delete=models.SET_NULL,
            null=True,
            related_name='submissions',
            help_text='The user who submitted this link'
    )
    url = models.URLField(
            help_text='The link that was submitted',
    )
    tags = models.CharField(
            help_text='Tags applied to this link submission',
            max_length=200
    )
    def __str__(self):
        return '%s\'s submission for %s — s%dep%d'%(self.user,self.episode.show.name,self.episode.season.number, self.episode.episode)

class SubmissionVote(TimestampedModel):
    submission = models.ForeignKey(
            Submission,
            on_delete=models.CASCADE,
            related_name='votes',
            help_text='What this submission was cast on'
    )
    user = models.ForeignKey(
            User,
            on_delete=models.CASCADE,
            related_name='votes',
            help_text='The user who cast this vote'
    )
    positive = models.BooleanField(
            help_text='If this is true, the vote is an upvote.  Otherwise, it is a downvote'
    )
    def __str__(self):
        return "%s's vote on %s"%(self.user,self.submission)

class Favorite(TimestampedModel):
    user = models.ForeignKey(
            User,
            on_delete=models.CASCADE
    )
    episode = models.ForeignKey(
            Episode,
            on_delete=models.CASCADE
    )
    def __str__(self):
        return "%s \u2665 %s"%(self.user, self.episode)

class Watch(TimestampedModel):
    user = models.ForeignKey(
            User,
            on_delete=models.CASCADE
    )
    episode = models.ForeignKey(
            Episode,
            on_delete=models.CASCADE
    )
    def __str__(self):
        return "%s \U0001f441 %s"%(self.user, self.episode)

class DiscussionBoard(TimestampedModel):
    show = models.ForeignKey(
            Show,
            on_delete=models.CASCADE,
            related_name='discussion_boards',
            help_text='The show this discussion was created for'
    )
    user = models.ForeignKey(
            User,
            on_delete=models.SET_NULL,
            null=True,
            related_name='discussion_boards',
            help_text='The user that created this discussion'
    )
    title = models.CharField(
            max_length=100,
            help_text='The title of the discussion'
    )
    body = models.TextField(
            help_text='The body of the post',
            verbose_name='Body'
    )
    def __str__(self):
        return '[%s] "%s" by %s'%(self.show.abbr, self.title, self.user)

class DiscussionReply(TimestampedModel):
    board = models.ForeignKey(
            DiscussionBoard,
            on_delete=models.CASCADE,
            related_name='replies',
            help_text='The discussion board this was created in reply to'
    )
    user = models.ForeignKey(
            User,
            on_delete=models.SET_NULL,
            null=True,
            related_name='replies',
            help_text='The user that posted this reply'
    )
    body = models.TextField(
            help_text='The body of the response',
            verbose_name='Body'
    )
    def __str__(self):
        return '[%s] %s\'s response to "%s"'%(self.board.show.abbr,self.user, self.board.title)

class DiscussionVote(TimestampedModel):
    user = models.ForeignKey(
            User,
            on_delete=models.CASCADE,
            related_name='discussion_votes',
            help_text='The user which cast this vote'
    )
    board = models.ForeignKey(
            DiscussionBoard,
            on_delete=models.CASCADE,
            related_name='votes',
            help_text='The board this vote was cast on'
    )
    positive = models.BooleanField(
            help_text='If true, the vote is an upvote.  Otherwise, it is a downvote.  Neutral votes are not recorded'
    )
    def __str__(self):
        return "%s %s %s"%(self.user, '\U0001f592' if self.positive else '\U0001f44e', self.board.title)