from django.contrib.postgres.search import SearchVector
from django.db import models
from django.conf import settings
from django.contrib.auth.models import AbstractUser, User
from django.contrib.auth import get_user_model

# Create your models here.


class Books(models.Model):
    """
    pyShelfs Book Database class
    :param title: Book title
    :param author: Author
    :param categories: Categories <-- Not implemented
    :param cover: Cover image BinaryField
    :param pages: # of pages <-- Not implemented
    :param progress: Reader percentage <-- Not implented
    :param file_name: Path to book
    """

    class Meta:
        db_table = "books"
        verbose_name_plural = 'Books'

    def __str__(self):
        return self.title

    title = models.TextField(max_length=None)
    author = models.TextField(max_length=None, null=True)
    categories = models.TextField(max_length=None, null=True)
    cover = models.BinaryField(null=True, editable=True)
    pages = models.IntegerField(null=True)
    progress = models.IntegerField(null=True)
    file_name = models.TextField(max_length=None, null=False)
    date = models.DateTimeField(auto_now_add=True)
    description = models.TextField(null=True)
    identifier = models.TextField(max_length=None, null=True)
    publisher = models.TextField(max_length=None, null=True)
    date = models.DateField(null=True)
    rights = models.TextField(max_length=None, null=True)
    tags = models.TextField(max_length=None, null=True)

    def generic_search(self, query):
        try:
            results = Books.objects.annotate(
                search=SearchVector("title", "file_name", "author", "tags"),
            ).filter(search=query)
        except Exception as e:
            raise
        return results

    def search_by_collection(self, query):
        try:
            return Books.objects.filter(categories=query)
        except Exception as e:
            raise


class Collections(models.Model):
    class Meta:
        db_table = "collections"
        verbose_name_plural = 'Collections'

    def __str__(self):
        return self.collection.__str__()

    collection = models.CharField(max_length=255)
    book_id = models.ForeignKey(Books, on_delete=models.PROTECT)

    def get_absolute_url(self):
        """Returns the url to access a particular instance of MyModelName."""
        return reverse("model-detail-view", args=[str(self.id)])

    def generic_search(self, query):
        books =[]
        try:
            #results = Collections.objects.all().filter(
            #    collection=query
            #)
            results = Collections.objects.prefetch_related('book_id').annotate(search=SearchVector("collection"), ).filter(
                search=query
            )
        except Exception as e:
            raise
        _results = results.values('book_id')
        for r in results:
            books.append(
                {
                    "pk": r.book_id.id,
                    "title": r.book_id.title,
                    "author": r.book_id.author,
                    "categories": r.book_id.categories,
                    "cover": r.book_id.cover,
                    "pages": r.book_id.pages,
                    "progress": r.book_id.progress,
                    "file_name": r.book_id.file_name,
                    "date": r.book_id.date,
                    "description": r.book_id.description,
                    "identifier": r.book_id.identifier,
                    "publisher": r.book_id.publisher,
                    "date": r.book_id.date,
                    "rights": r.book_id.rights,
                    "tags": r.book_id.tags
                }
            )
        return books


class Navigation(models.Model):
    """
    pyShelfs Navigation Database class
    :param title: Link Text
    :param link: Link link :)
    :param category: Where in the nav tree do I belong
    :param parent_id: This link is a sub link of link with id of me
    :param alt: Alternate text of link
    :param type: Web link, or Socket link which will be expected to act on \
    the link, and the action defined in socket
    :param socket: if a Socket link define socket here
    """

    class Meta:
        db_table = "navigation"
        verbose_name_plural = "Navigation"

    def __str__(self):
        return self.title

    title = models.CharField(max_length=255)
    link = models.CharField(max_length=255, null=True)
    category = models.CharField(max_length=255, null=True)
    parent_id = models.IntegerField(null=True, editable=True)
    alt = models.CharField(max_length=255, null=True)
    type = models.IntegerField(null=True)
    socket = models.CharField(max_length=255, null=False)

    def generic_search(self, query):
        try:
            results = Navigation.objects.annotate(
                search=SearchVector("title", "parent_id", "category"),
            ).filter(search=query)
        except Exception as e:
            raise
        return results


class User(AbstractUser):
    facebook = models.CharField(max_length=255, null=True)
    twitter = models.CharField(max_length=255, null=True)
    ulvl = models.IntegerField(default=1)
    sponsorid = models.IntegerField(null=True)
    matrixid = models.CharField(max_length=255, null=True)

    def __str__(self):
        return self.username


class Favorites(models.Model):
    """
     Favorites Database class
    :param book: book foreign key
    :param user: user foreign key
    """

    class Meta:
        db_table = "favorites"
        verbose_name_plural = "Favorites"

    def __str__(self):
        return str(self.book)
 
    book = models.ForeignKey(Books, on_delete=models.CASCADE, default=None)
    user = models.ForeignKey(User, on_delete=models.CASCADE, default=None)

    def generic_search(self, query):
        try:
            results = Favorites.objects.annotate(search=SearchVector("user"),).filter(search=query)
        except Exception as e:
            raise
        return results