''' testing import '''
from collections import namedtuple
import csv
import pathlib
from unittest.mock import patch

from django.test import TestCase
import responses

from bookwyrm import models, importer
from bookwyrm.librarything_import import LibrarythingImporter
from bookwyrm.settings import DOMAIN

class LibrarythingImport(TestCase):
    ''' importing from librarything tsv '''
    def setUp(self):
        self.importer = LibrarythingImporter()
        ''' use a test tsv '''
        datafile = pathlib.Path(__file__).parent.joinpath(
            'data/librarything.tsv')

        # Librarything generates latin encoded exports...
        self.csv = open(datafile, 'r', encoding=self.importer.encoding)
        self.user = models.User.objects.create_user(
            'mmai', 'mmai@mmai.mmai', 'password', local=True)

        models.Connector.objects.create(
            identifier=DOMAIN,
            name='Local',
            local=True,
            connector_file='self_connector',
            base_url='https://%s' % DOMAIN,
            books_url='https://%s/book' % DOMAIN,
            covers_url='https://%s/images/covers' % DOMAIN,
            search_url='https://%s/search?q=' % DOMAIN,
            priority=1,
        )
        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'], '5498194')
        self.assertEqual(import_items[1].index, 1)
        self.assertEqual(import_items[1].data['Book Id'], '5015319')
        self.assertEqual(import_items[2].index, 2)
        self.assertEqual(import_items[2].data['Book Id'], '5015399')


    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(import_items[0].data['Book Id'], '5498194')
        self.assertEqual(retry_items[1].index, 1)
        self.assertEqual(retry_items[1].data['Book Id'], '5015319')


    @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.importer.handle_imported_book'):
                importer.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):
        ''' librarything 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/librarything.tsv')
        csv_file = open(datafile, 'r', encoding=self.importer.encoding)
        for index, entry in enumerate(list(csv.DictReader(csv_file, delimiter=self.importer.delimiter))):
            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'):
            importer.handle_imported_book(
                self.importer.service, self.user, import_item, False, 'public')

        shelf.refresh_from_db()
        self.assertEqual(shelf.books.first(), self.book)

        readthrough = models.ReadThrough.objects.get(user=self.user)
        self.assertEqual(readthrough.book, self.book)
        # I can't remember how to create dates and I don't want to look it up.
        self.assertEqual(readthrough.start_date.year, 2007)
        self.assertEqual(readthrough.start_date.month, 4)
        self.assertEqual(readthrough.start_date.day, 16)
        self.assertEqual(readthrough.finish_date.year, 2007)
        self.assertEqual(readthrough.finish_date.month, 5)
        self.assertEqual(readthrough.finish_date.day, 8)


    def test_handle_imported_book_already_shelved(self):
        ''' librarything 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)

        import_job = models.ImportJob.objects.create(user=self.user)
        datafile = pathlib.Path(__file__).parent.joinpath('data/librarything.tsv')
        csv_file = open(datafile, 'r', encoding=self.importer.encoding)
        for index, entry in enumerate(list(csv.DictReader(csv_file, delimiter=self.importer.delimiter))):
            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'):
            importer.handle_imported_book(
                self.importer.service, self.user, import_item, False, 'public')

        shelf.refresh_from_db()
        self.assertEqual(shelf.books.first(), self.book)
        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.year, 2007)
        self.assertEqual(readthrough.start_date.month, 4)
        self.assertEqual(readthrough.start_date.day, 16)
        self.assertEqual(readthrough.finish_date.year, 2007)
        self.assertEqual(readthrough.finish_date.month, 5)
        self.assertEqual(readthrough.finish_date.day, 8)


    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/librarything.tsv')
        csv_file = open(datafile, 'r', encoding=self.importer.encoding)
        for index, entry in enumerate(list(csv.DictReader(csv_file, delimiter=self.importer.delimiter))):
            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'):
            importer.handle_imported_book(
                self.importer.service, self.user, import_item, False, 'public')
            importer.handle_imported_book(
                self.importer.service, self.user, import_item, False, 'public')

        shelf.refresh_from_db()
        self.assertEqual(shelf.books.first(), self.book)

        readthrough = models.ReadThrough.objects.get(user=self.user)
        self.assertEqual(readthrough.book, self.book)
        # I can't remember how to create dates and I don't want to look it up.
        self.assertEqual(readthrough.start_date.year, 2007)
        self.assertEqual(readthrough.start_date.month, 4)
        self.assertEqual(readthrough.start_date.day, 16)
        self.assertEqual(readthrough.finish_date.year, 2007)
        self.assertEqual(readthrough.finish_date.month, 5)
        self.assertEqual(readthrough.finish_date.day, 8)


    def test_handle_imported_book_review(self):
        ''' librarything review import '''
        import_job = models.ImportJob.objects.create(user=self.user)
        datafile = pathlib.Path(__file__).parent.joinpath('data/librarything.tsv')
        csv_file = open(datafile, 'r', encoding=self.importer.encoding)
        entry = list(csv.DictReader(csv_file, delimiter=self.importer.delimiter))[0]
        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'):
            importer.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, 'chef d\'oeuvre')
        self.assertEqual(review.rating, 5)
        self.assertEqual(review.published_date.year, 2007)
        self.assertEqual(review.published_date.month, 5)
        self.assertEqual(review.published_date.day, 8)
        self.assertEqual(review.privacy, 'unlisted')


    def test_handle_imported_book_reviews_disabled(self):
        ''' librarything review import '''
        import_job = models.ImportJob.objects.create(user=self.user)
        datafile = pathlib.Path(__file__).parent.joinpath('data/librarything.tsv')
        csv_file = open(datafile, 'r', encoding=self.importer.encoding)
        entry = list(csv.DictReader(csv_file, delimiter=self.importer.delimiter))[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'):
            importer.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())