from decimal import Decimal as D
from datetime import datetime, timedelta

from django.test import TestCase
from django.utils import unittest
from django.db import IntegrityError
from django.contrib.auth.models import User
from django.conf import settings

from regluit.payment.models import Transaction
from regluit.core.models import Campaign, Work, UnglueitError
from regluit.core import bookloader, models, search, goodreads, librarything
from regluit.core import isbn
from regluit.payment.parameters import PAYMENT_TYPE_AUTHORIZATION

from regluit.core import tasks
from celery.task.sets import TaskSet
from celery.task import chord

from time import sleep
from math import factorial


class TestBookLoader(TestCase):

    def test_add_by_isbn(self):
        # edition
        edition = bookloader.add_by_isbn('0441012035')
        self.assertEqual(edition.title, 'Neuromancer')
        self.assertEqual(edition.publication_date, '2004')
        self.assertEqual(edition.publisher, 'Ace Books')
        self.assertEqual(edition.isbn_10, '0441012035')
        self.assertEqual(edition.isbn_13, '9780441012039')
        self.assertEqual(edition.googlebooks_id, "2NyiPwAACAAJ")
        self.assertEqual(edition.language, "en")

        # subjects
        subject_names = [subject.name for subject in edition.subjects.all()]
        self.assertEqual(len(subject_names), 11)
        self.assertTrue('Japan' in subject_names)

        # authors
        self.assertEqual(edition.authors.all().count(), 1)
        self.assertEqual(edition.authors.all()[0].name, 'William Gibson')

        # work
        self.assertTrue(edition.work)

    def test_double_add(self):
        bookloader.add_by_isbn('0441012035')
        bookloader.add_by_isbn('0441012035')
        self.assertEqual(models.Edition.objects.all().count(), 1)
        self.assertEqual(models.Author.objects.all().count(), 1)
        self.assertEqual(models.Work.objects.all().count(), 1)
        self.assertEqual(models.Subject.objects.all().count(), 11)
       
    def test_missing_isbn(self):
        e = bookloader.add_by_isbn('0139391401')
        self.assertEqual(e, None)

    def test_thingisbn(self):
        isbns = bookloader.thingisbn('0441012035')
        self.assertTrue(len(isbns) > 20)
        self.assertTrue('0441012035' in isbns)
        self.assertTrue('3453313895' in isbns)

    def test_add_related(self):
        # add one edition
        edition = bookloader.add_by_isbn('0441012035')
        self.assertEqual(models.Edition.objects.count(), 1)
        self.assertEqual(models.Work.objects.count(), 1)
    
        # ask for related editions to be added using the work we just created
        bookloader.add_related('0441012035')
        self.assertTrue(models.Edition.objects.count() > 20)
        self.assertEqual(models.Work.objects.count(), 1)
        self.assertTrue(edition.work.editions.count() > 20)

    def test_merge_works(self):
        # add two editions and see that there are two stub works
        e1 = bookloader.add_by_isbn('0465019358')
        e2 = bookloader.add_by_isbn('1458776204')
        self.assertTrue(e1)
        self.assertTrue(e2)
        self.assertEqual(models.Work.objects.count(), 2)

        # add the stub works to a wishlist
        user = User.objects.create_user('test', 'test@example.com', 'testpass')
        user.wishlist.works.add(e1.work)
        user.wishlist.works.add(e2.work)

        # create campaigns for the stub works 
        c1 = models.Campaign.objects.create(
            name=e1.work.title,
            work=e2.work, 
            description='Test Campaign 1',
            deadline=datetime.now(),
            target=D('1000.00'),
        )
        c2 = models.Campaign.objects.create(
            name=e2.work.title,
            work=e2.work, 
            description='Test Campaign 2',
            deadline=datetime.now(),
            target=D('1000.00'),
        )

        # now add related edition to make sure Works get merged
        bookloader.add_related('1458776204')
        self.assertEqual(models.Work.objects.count(), 1)
        
        # and that relevant Campaigns and Wishlists are updated
        self.assertEqual(c1.work, c2.work)
        self.assertEqual(user.wishlist.works.all().count(), 1)
    
    def test_oclc(self):
        edition = bookloader.add_by_oclc('1246014')
        self.assertEqual(edition.title, 'The Latin language')

    def test_ebook(self):
        edition = bookloader.add_by_oclc('1246014')
        self.assertEqual(edition.ebooks.count(), 2)
        #ebook_epub = edition.ebooks.all()[0]
        ebook_epub = edition.ebooks.filter(format='epub')[0]
        self.assertEqual(ebook_epub.format, 'epub')
        self.assertEqual(ebook_epub.url, 'http://books.google.com/books/download/The_Latin_language.epub?id=U3FXAAAAYAAJ&ie=ISO-8859-1&output=epub&source=gbs_api')
        self.assertEqual(ebook_epub.provider, 'google')
        ebook_pdf = edition.ebooks.filter(format='pdf')[0]
        self.assertEqual(ebook_pdf.format, 'pdf')
        self.assertEqual(ebook_pdf.url, 'http://books.google.com/books/download/The_Latin_language.pdf?id=U3FXAAAAYAAJ&ie=ISO-8859-1&output=pdf&sig=ACfU3U2yLt3nmTncB8ozxOWUc4iHKUznCA&source=gbs_api')
        self.assertEqual(ebook_pdf.provider, 'google')        

        w = edition.work
        self.assertEqual(w.first_epub().url, "http://books.google.com/books/download/The_Latin_language.epub?id=U3FXAAAAYAAJ&ie=ISO-8859-1&output=epub&source=gbs_api")
        self.assertEqual(w.first_pdf().url, "http://books.google.com/books/download/The_Latin_language.pdf?id=U3FXAAAAYAAJ&ie=ISO-8859-1&output=pdf&sig=ACfU3U2yLt3nmTncB8ozxOWUc4iHKUznCA&source=gbs_api")
        self.assertEqual(w.first_epub_url(), "http://books.google.com/books/download/The_Latin_language.epub?id=U3FXAAAAYAAJ&ie=ISO-8859-1&output=epub&source=gbs_api")
        self.assertEqual(w.first_pdf_url(), "http://books.google.com/books/download/The_Latin_language.pdf?id=U3FXAAAAYAAJ&ie=ISO-8859-1&output=pdf&sig=ACfU3U2yLt3nmTncB8ozxOWUc4iHKUznCA&source=gbs_api")

    def test_add_no_ebook(self):
        # this edition lacks an ebook, but we should still be able to load it
        e = bookloader.add_by_isbn('0465019358')
        self.assertTrue(e)

class SearchTests(TestCase):

    def test_basic_search(self):
        results = search.gluejar_search('melville')
        self.assertEqual(len(results), 10)

        r = results[0]
        self.assertTrue(r.has_key('title'))
        self.assertTrue(r.has_key('author'))
        self.assertTrue(r.has_key('description'))
        self.assertTrue(r.has_key('cover_image_thumbnail'))
        self.assertTrue(r.has_key('publisher'))
        self.assertTrue(r.has_key('isbn_10'))
        self.assertTrue(r.has_key('googlebooks_id'))

    def test_googlebooks_search(self):
        response = search.googlebooks_search('melville', '69.243.24.29')
        self.assertEqual(len(response['items']), 10)


class CampaignTests(TestCase):

    def test_required_fields(self):
        # a campaign must have a target, deadline and a work

        c = Campaign()
        self.assertRaises(IntegrityError, c.save)

        c = Campaign(target=D('1000.00'))
        self.assertRaises(IntegrityError, c.save)

        c = Campaign(target=D('1000.00'), deadline=datetime(2012, 1, 1))
        self.assertRaises(IntegrityError, c.save)

        w = Work()
        w.save()
        c = Campaign(target=D('1000.00'), deadline=datetime(2012, 1, 1), work=w)
        c.save()

    def test_campaign_status(self):
        w = Work()
        w.save()
        # INITIALIZED
        c1 = Campaign(target=D('1000.00'),deadline=datetime(2012,1,1),work=w)
        c1.save()
        self.assertEqual(c1.status, 'INITIALIZED')
        # ACTIVATED
        c2 = Campaign(target=D('1000.00'),deadline=datetime(2012,1,1),work=w)
        c2.save()
        self.assertEqual(c2.status, 'INITIALIZED')
        c2.activate()
        self.assertEqual(c2.status, 'ACTIVE')
        # SUSPENDED
        c2.suspend(reason="for testing")
        self.assertEqual(c2.status, 'SUSPENDED')
        # RESUMING
        c2.resume()
        self.assertEqual(c2.suspended, None)
        self.assertEqual(c2.status,'ACTIVE')
        # should not let me suspend a campaign that hasn't been initialized
        self.assertRaises(UnglueitError, c1.suspend, "for testing")
        # UNSUCCESSFUL
        c3 = Campaign(target=D('1000.00'),deadline=datetime.utcnow() - timedelta(days=1),work=w)
        c3.save()
        c3.activate()
        self.assertEqual(c3.status, 'UNSUCCESSFUL')
        # SUCCESSFUL
        c4 = Campaign(target=D('1000.00'),deadline=datetime.utcnow() - timedelta(days=1),work=w)
        c4.save()
        c4.activate()
        
        t = Transaction()
        t.amount = D('1234.00')
        t.type = PAYMENT_TYPE_AUTHORIZATION
        t.status = 'ACTIVE'
        t.campaign = c4
        t.save()        
        self.assertEqual(c4.status, 'SUCCESSFUL')
        
        # ACTIVE
        c4.deadline = datetime.utcnow() + timedelta(days=1)
        c4.save()
        self.assertEqual(c4.status, 'ACTIVE')
        
        # WITHDRAWN
        c5 = Campaign(target=D('1000.00'),deadline=datetime(2012,1,1),work=w)
        c5.save()
        c5.activate().withdraw('testing')
        self.assertEqual(c5.status, 'WITHDRAWN')        


class SettingsTest(TestCase):
    
    def test_dev_me_alignment(self):
        from regluit.settings import me, dev
        self.assertEqual(set(me.__dict__.keys()) ^ set(dev.__dict__.keys()), set([]))
        
    def test_prod_me_alignment(self):
        from regluit.settings import me, prod
        self.assertEqual(set(me.__dict__.keys()) ^ set(prod.__dict__.keys()), set([]))
        

class WishlistTest(TestCase):

    def test_add_remove(self):
        # add a work to a user's wishlist
        user = User.objects.create_user('test', 'test@example.com', 'testpass')
        edition = bookloader.add_by_isbn('0441012035')
        work = edition.work
        user.wishlist.works.add(work)
        self.assertEqual(user.wishlist.works.count(), 1)
        user.wishlist.works.remove(work)
        self.assertEqual(user.wishlist.works.count(), 0)

class SettingsTest(TestCase):
    
    def test_dev_me_alignment(self):
        try:
            from regluit.settings import me, dev
        except:
            return
        
        self.assertEqual(set(me.__dict__.keys()) ^ set(dev.__dict__.keys()), set([]))
       
        
    def test_prod_me_alignment(self):
        from regluit.settings import me, prod
        self.assertEqual(set(me.__dict__.keys()) ^ set(prod.__dict__.keys()), set([]))

class CeleryTaskTest(TestCase):
    def test_single_fac(self):
        n = 10
        task = tasks.fac.delay(n)
        result = task.get(timeout=10)
        self.assertEqual(result,factorial(n))
    def test_subtask(self):
        n = 30
        subtasks = [tasks.fac.subtask(args=(x,)) for x in range(n)]
        job = TaskSet(tasks=subtasks)
        result = job.apply_async()
        while not result.ready():
            sleep(0.2)
        self.assertEqual(result.join(),[factorial(x) for x in range(n)])
    
class GoodreadsTest(TestCase):
    def test_goodreads_shelves(self):
        # test to see whether the core undeletable shelves are on the list
        gr_uid = "767708"  # for Raymond Yee
        gc = goodreads.GoodreadsClient(key=settings.GOODREADS_API_KEY, secret=settings.GOODREADS_API_SECRET)
        shelves = gc.shelves_list(gr_uid)
        shelf_names = [s['name'] for s in shelves['user_shelves']]
        self.assertTrue('currently-reading' in shelf_names)
        self.assertTrue('read' in shelf_names)
        self.assertTrue('to-read' in shelf_names)
    def test_review_list_unauth(self):
        gr_uid = "767708"  # for Raymond Yee
        gc = goodreads.GoodreadsClient(key=settings.GOODREADS_API_KEY, secret=settings.GOODREADS_API_SECRET)
        reviews = gc.review_list_unauth(user_id=gr_uid, shelf='read')
        # test to see whether there is a book field in each of the review
        self.assertTrue(all([r.has_key("book") for r in reviews]))
    #def test_review_list(self):
    #    """ At this point this test doesn't work but at this moment we don't need this functionality"""
    #    gr_uid = "767708"  # for Raymond Yee
    #    gc = goodreads.GoodreadsClient(key=settings.GOODREADS_API_KEY, secret=settings.GOODREADS_API_SECRET)
    #    reviews = gc.review_list(user_id=gr_uid, shelf='read')
    #    # test to see whether there is a book field in each of the review
    #    self.assertTrue(all([r.has_key("book") for r in reviews]))        

class LibraryThingTest(TestCase):
    def test_scrape_test_lib(self):
        # account yujx : has one book: 0471925675
        lt_username = 'yujx'
        lt = librarything.LibraryThing(username=lt_username)
        books = list(lt.parse_user_catalog(view_style=5))
        self.assertEqual(len(books),1)
        self.assertEqual(books[0]['isbn'], '0471925675')

class ISBNTest(TestCase):
    def test_ISBN(self):
        milosz_10 = '006019667X'
        milosz_13 = '9780060196677'
        python_10 = '0-672-32978-6'
        python_10_wrong = '0-672-32978-7'
        python_13 = '978-0-672-32978-4'
        
        isbn_python_10 = isbn.ISBN(python_10)
        isbn_python_13 = isbn.ISBN(python_13)
        # raise exception for wrong length or invalid characters
        self.assertRaises(isbn.ISBNException, isbn.ISBN, "978-0-M72-32978-X")
        # check that only ISBN 13 starting with 978 or 979 are accepted
        self.assertRaises(isbn.ISBNException, isbn.ISBN, "111-0-M72-32978-X")
        
        # right type?
        self.assertEqual(isbn_python_10.type, '10')
        self.assertEqual(isbn_python_13.type, '13')
        # valid?
        self.assertEqual(isbn_python_10.valid, True)
        self.assertEqual(isbn.ISBN(python_10_wrong).valid, False)
        
        # do conversion -- first the outside methods
        self.assertEqual(isbn.convert_10_to_13(isbn.strip(python_10)),isbn.strip(python_13))
        self.assertEqual(isbn.convert_13_to_10(isbn.strip(python_13)),isbn.strip(python_10))
        
        # check formatting
        self.assertEqual(isbn.ISBN(python_13).to_string(type='13'), '9780672329784')
        self.assertEqual(isbn.ISBN(python_13).to_string('13',True), '978-0-672-32978-4')
        self.assertEqual(isbn.ISBN(python_13).to_string(type='10'), '0672329786')
        self.assertEqual(isbn.ISBN(python_10).to_string(type='13'), '9780672329784')
        self.assertEqual(isbn.ISBN(python_10).to_string(10,True), '0-672-32978-6')
        
        # complain if one tries to get ISBN-10 for a 979 ISBN 13
        # making up a 979 ISBN
        isbn_979 = isbn.ISBN("979-1-234-56789-0").validate()
        self.assertRaises(isbn.ISBNException, isbn_979.to_string, '10')
        
        # check casting to string -- ISBN 13
        self.assertEqual(str(isbn.ISBN(python_10)), '0672329786')
        
        # test __eq__ and __ne__ and validate
        self.assertTrue(isbn.ISBN(milosz_10) == isbn.ISBN(milosz_13))
        self.assertTrue(isbn.ISBN(milosz_10) == milosz_13)
        self.assertFalse(isbn.ISBN(milosz_10) == 'ddds')
        self.assertFalse(isbn.ISBN(milosz_10) != milosz_10)
        self.assertTrue(isbn.ISBN(python_10) != python_10_wrong)
        self.assertEqual(isbn.ISBN(python_10_wrong).validate(), python_10)
        self.assertEqual(isbn.ISBN(python_13).validate(), python_10)
        
        # curious about set membership
        self.assertEqual(len(set([isbn.ISBN(milosz_10), isbn.ISBN(milosz_13)])),2)
        self.assertEqual(len(set([str(isbn.ISBN(milosz_10)), str(isbn.ISBN(milosz_13))])),2)
        self.assertEqual(len(set([isbn.ISBN(milosz_10).to_string(), isbn.ISBN(milosz_13).to_string()])),1)

def suite():

    testcases = [TestBookLoader, SearchTests, CampaignTests, WishlistTest, CeleryTaskTest, GoodreadsTest, LibraryThingTest, ISBNTest]
    suites = unittest.TestSuite([unittest.TestLoader().loadTestsFromTestCase(testcase) for testcase in testcases])
    suites.addTest(SettingsTest('test_dev_me_alignment'))  # give option to test this alignment
    return suites