""" testing import """
from collections import namedtuple
import csv
import pathlib
from unittest.mock import patch
import datetime
import pytz

from django.test import TestCase
import responses

from bookwyrm import models
from bookwyrm.importers import GoodreadsImporter
from bookwyrm.importers.importer import import_data, handle_imported_book


def make_date(*args):
    """helper function to easily generate a date obj"""
    return datetime.datetime(*args, tzinfo=pytz.UTC)


# pylint: disable=consider-using-with
@patch("bookwyrm.suggested_users.rerank_suggestions_task.delay")
@patch("bookwyrm.activitystreams.populate_stream_task.delay")
@patch("bookwyrm.activitystreams.add_book_statuses_task.delay")
class GoodreadsImport(TestCase):
    """importing from goodreads csv"""

    def setUp(self):
        """use a test csv"""
        self.importer = GoodreadsImporter()
        datafile = pathlib.Path(__file__).parent.joinpath("../data/goodreads.csv")
        self.csv = open(datafile, "r", encoding=self.importer.encoding)
        with patch("bookwyrm.suggested_users.rerank_suggestions_task.delay"), patch(
            "bookwyrm.activitystreams.populate_stream_task.delay"
        ):
            self.user = models.User.objects.create_user(
                "mouse", "mouse@mouse.mouse", "password", local=True
            )

        work = models.Work.objects.create(title="Test Work")
        self.book = models.Edition.objects.create(
            title="Example Edition",
            remote_id="https://example.com/book/1",
            parent_work=work,
        )

    def test_create_job(self, *_):
        """creates the import job entry and checks csv"""
        import_job = self.importer.create_job(self.user, self.csv, False, "public")
        self.assertEqual(import_job.user, self.user)
        self.assertEqual(import_job.include_reviews, False)
        self.assertEqual(import_job.privacy, "public")

        import_items = models.ImportItem.objects.filter(job=import_job).all()
        self.assertEqual(len(import_items), 3)
        self.assertEqual(import_items[0].index, 0)
        self.assertEqual(import_items[0].data["Book Id"], "42036538")
        self.assertEqual(import_items[1].index, 1)
        self.assertEqual(import_items[1].data["Book Id"], "52691223")
        self.assertEqual(import_items[2].index, 2)
        self.assertEqual(import_items[2].data["Book Id"], "28694510")

    def test_create_retry_job(self, *_):
        """trying again with items that didn't import"""
        import_job = self.importer.create_job(self.user, self.csv, False, "unlisted")
        import_items = models.ImportItem.objects.filter(job=import_job).all()[:2]

        retry = self.importer.create_retry_job(self.user, import_job, import_items)
        self.assertNotEqual(import_job, retry)
        self.assertEqual(retry.user, self.user)
        self.assertEqual(retry.include_reviews, False)
        self.assertEqual(retry.privacy, "unlisted")

        retry_items = models.ImportItem.objects.filter(job=retry).all()
        self.assertEqual(len(retry_items), 2)
        self.assertEqual(retry_items[0].index, 0)
        self.assertEqual(retry_items[0].data["Book Id"], "42036538")
        self.assertEqual(retry_items[1].index, 1)
        self.assertEqual(retry_items[1].data["Book Id"], "52691223")

    def test_start_import(self, *_):
        """begin loading books"""
        import_job = self.importer.create_job(self.user, self.csv, False, "unlisted")
        MockTask = namedtuple("Task", ("id"))
        mock_task = MockTask(7)
        with patch("bookwyrm.importers.importer.import_data.delay") as start:
            start.return_value = mock_task
            self.importer.start_import(import_job)
        import_job.refresh_from_db()
        self.assertEqual(import_job.task_id, "7")

    @responses.activate
    def test_import_data(self, *_):
        """resolve entry"""
        import_job = self.importer.create_job(self.user, self.csv, False, "unlisted")
        book = models.Edition.objects.create(title="Test Book")

        with patch(
            "bookwyrm.models.import_job.ImportItem.get_book_from_isbn"
        ) as resolve:
            resolve.return_value = book
            with patch("bookwyrm.importers.importer.handle_imported_book"):
                import_data(self.importer.service, import_job.id)

        import_item = models.ImportItem.objects.get(job=import_job, index=0)
        self.assertEqual(import_item.book.id, book.id)

    def test_handle_imported_book(self, *_):
        """goodreads import added a book, this adds related connections"""
        shelf = self.user.shelf_set.filter(identifier="read").first()
        self.assertIsNone(shelf.books.first())

        import_job = models.ImportJob.objects.create(user=self.user)
        datafile = pathlib.Path(__file__).parent.joinpath("../data/goodreads.csv")
        csv_file = open(datafile, "r")  # pylint: disable=unspecified-encoding
        for index, entry in enumerate(list(csv.DictReader(csv_file))):
            entry = self.importer.parse_fields(entry)
            import_item = models.ImportItem.objects.create(
                job_id=import_job.id, index=index, data=entry, book=self.book
            )
            break

        with patch("bookwyrm.models.activitypub_mixin.broadcast_task.delay"):
            handle_imported_book(
                self.importer.service, self.user, import_item, False, "public"
            )

        shelf.refresh_from_db()
        self.assertEqual(shelf.books.first(), self.book)
        self.assertEqual(
            shelf.shelfbook_set.first().shelved_date, make_date(2020, 10, 21)
        )

        readthrough = models.ReadThrough.objects.get(user=self.user)
        self.assertEqual(readthrough.book, self.book)
        self.assertEqual(readthrough.start_date, make_date(2020, 10, 21))
        self.assertEqual(readthrough.finish_date, make_date(2020, 10, 25))

    def test_handle_imported_book_already_shelved(self, *_):
        """goodreads import added a book, this adds related connections"""
        with patch("bookwyrm.models.activitypub_mixin.broadcast_task.delay"):
            shelf = self.user.shelf_set.filter(identifier="to-read").first()
            models.ShelfBook.objects.create(
                shelf=shelf,
                user=self.user,
                book=self.book,
                shelved_date=make_date(2020, 2, 2),
            )

        import_job = models.ImportJob.objects.create(user=self.user)
        datafile = pathlib.Path(__file__).parent.joinpath("../data/goodreads.csv")
        csv_file = open(datafile, "r")  # pylint: disable=unspecified-encoding
        for index, entry in enumerate(list(csv.DictReader(csv_file))):
            entry = self.importer.parse_fields(entry)
            import_item = models.ImportItem.objects.create(
                job_id=import_job.id, index=index, data=entry, book=self.book
            )
            break

        with patch("bookwyrm.models.activitypub_mixin.broadcast_task.delay"):
            handle_imported_book(
                self.importer.service, self.user, import_item, False, "public"
            )

        shelf.refresh_from_db()
        self.assertEqual(shelf.books.first(), self.book)
        self.assertEqual(
            shelf.shelfbook_set.first().shelved_date, make_date(2020, 2, 2)
        )
        self.assertIsNone(self.user.shelf_set.get(identifier="read").books.first())

        readthrough = models.ReadThrough.objects.get(user=self.user)
        self.assertEqual(readthrough.book, self.book)
        self.assertEqual(readthrough.start_date, make_date(2020, 10, 21))
        self.assertEqual(readthrough.finish_date, make_date(2020, 10, 25))

    def test_handle_import_twice(self, *_):
        """re-importing books"""
        shelf = self.user.shelf_set.filter(identifier="read").first()
        import_job = models.ImportJob.objects.create(user=self.user)
        datafile = pathlib.Path(__file__).parent.joinpath("../data/goodreads.csv")
        csv_file = open(datafile, "r")  # pylint: disable=unspecified-encoding
        for index, entry in enumerate(list(csv.DictReader(csv_file))):
            entry = self.importer.parse_fields(entry)
            import_item = models.ImportItem.objects.create(
                job_id=import_job.id, index=index, data=entry, book=self.book
            )
            break

        with patch("bookwyrm.models.activitypub_mixin.broadcast_task.delay"):
            handle_imported_book(
                self.importer.service, self.user, import_item, False, "public"
            )
            handle_imported_book(
                self.importer.service, self.user, import_item, False, "public"
            )

        shelf.refresh_from_db()
        self.assertEqual(shelf.books.first(), self.book)
        self.assertEqual(
            shelf.shelfbook_set.first().shelved_date, make_date(2020, 10, 21)
        )

        readthrough = models.ReadThrough.objects.get(user=self.user)
        self.assertEqual(readthrough.book, self.book)
        self.assertEqual(readthrough.start_date, make_date(2020, 10, 21))
        self.assertEqual(readthrough.finish_date, make_date(2020, 10, 25))

    @patch("bookwyrm.activitystreams.add_status_task.delay")
    def test_handle_imported_book_review(self, *_):
        """goodreads review import"""
        import_job = models.ImportJob.objects.create(user=self.user)
        datafile = pathlib.Path(__file__).parent.joinpath("../data/goodreads.csv")
        csv_file = open(datafile, "r")  # pylint: disable=unspecified-encoding
        entry = list(csv.DictReader(csv_file))[2]
        entry = self.importer.parse_fields(entry)
        import_item = models.ImportItem.objects.create(
            job_id=import_job.id, index=0, data=entry, book=self.book
        )

        with patch("bookwyrm.models.activitypub_mixin.broadcast_task.delay"):
            handle_imported_book(
                self.importer.service, self.user, import_item, True, "unlisted"
            )
        review = models.Review.objects.get(book=self.book, user=self.user)
        self.assertEqual(review.content, "mixed feelings")
        self.assertEqual(review.rating, 2)
        self.assertEqual(review.published_date, make_date(2019, 7, 8))
        self.assertEqual(review.privacy, "unlisted")

    @patch("bookwyrm.activitystreams.add_status_task.delay")
    def test_handle_imported_book_rating(self, *_):
        """goodreads rating import"""
        import_job = models.ImportJob.objects.create(user=self.user)
        datafile = pathlib.Path(__file__).parent.joinpath(
            "../data/goodreads-rating.csv"
        )
        csv_file = open(datafile, "r")  # pylint: disable=unspecified-encoding
        entry = list(csv.DictReader(csv_file))[2]
        entry = self.importer.parse_fields(entry)
        import_item = models.ImportItem.objects.create(
            job_id=import_job.id, index=0, data=entry, book=self.book
        )

        with patch("bookwyrm.models.activitypub_mixin.broadcast_task.delay"):
            handle_imported_book(
                self.importer.service, self.user, import_item, True, "unlisted"
            )
        review = models.ReviewRating.objects.get(book=self.book, user=self.user)
        self.assertIsInstance(review, models.ReviewRating)
        self.assertEqual(review.rating, 2)
        self.assertEqual(review.published_date, make_date(2019, 7, 8))
        self.assertEqual(review.privacy, "unlisted")

    def test_handle_imported_book_reviews_disabled(self, *_):
        """goodreads review import"""
        import_job = models.ImportJob.objects.create(user=self.user)
        datafile = pathlib.Path(__file__).parent.joinpath("../data/goodreads.csv")
        csv_file = open(datafile, "r")  # pylint: disable=unspecified-encoding
        entry = list(csv.DictReader(csv_file))[2]
        entry = self.importer.parse_fields(entry)
        import_item = models.ImportItem.objects.create(
            job_id=import_job.id, index=0, data=entry, book=self.book
        )

        with patch("bookwyrm.models.activitypub_mixin.broadcast_task.delay"):
            handle_imported_book(
                self.importer.service, self.user, import_item, False, "unlisted"
            )
        self.assertFalse(
            models.Review.objects.filter(book=self.book, user=self.user).exists()
        )