import uuid
from django.contrib import auth
from django.test import TestCase
from django.utils import timezone

from apps.lyric.models import LoginToken, Token, User, Wallet


class UserModelTest(TestCase):
    def test_model_is_configured_for_django_auth(self):
        self.assertEqual(auth.get_user_model(), User)
    
    def test_user_is_valid_with_email_only(self):
        user = User(email="a@b.cde")
        user.set_unusable_password()
        user.full_clean() # should not raise

    def test_id_is_primary_key(self):
        user = User(id="123")
        self.assertEqual(user.pk, "123")

    def test_user_can_have_a_username(self):
        user = User.objects.create(email="a@b.cde")
        user.username = "stardust"
        user.save()
        self.assertEqual(User.objects.get(pk=user.pk).username, "stardust")

    def test_searchable_defaults_to_false(self):
        user = User.objects.create(email="a@b.cde")
        self.assertFalse(user.searchable)

class LoginTokenModelTest(TestCase):
    def test_links_user_with_autogen_uid(self):
        login_token1 = LoginToken.objects.create(email="a@b.cde")
        login_token2 = LoginToken.objects.create(email="v@w.xyz")
        self.assertNotEqual(login_token1.pk, login_token2.pk)
        self.assertIsInstance(login_token1.pk, uuid.UUID)

class UserManagerTest(TestCase):
    def test_create_superuser_sets_is_staff_and_is_superuser(self):
        user = User.objects.create_superuser(
            email="admin@example.com",
            password="correct-password",
        )
        self.assertTrue(user.is_staff)
        self.assertTrue(user.is_superuser)

    def test_create_superuser_sets_usable_password(self):
        user = User.objects.create_superuser(
            email="admin@example.com",
            password="correct-password",
        )
        self.assertTrue(user.check_password("correct-password"))

class UserPaletteTest(TestCase):
    def test_palette_field_defaults_to_palette_default(self):
        user = User.objects.create(email="a@b.cde")
        self.assertEqual(user.palette, "palette-default")

class WalletCreationTest(TestCase):
    def setUp(self):
        self.user = User.objects.create(email="capman@test.io")

    def test_wallet_is_created_for_new_user(self):
        self.assertTrue(Wallet.objects.filter(user=self.user).exists())
    
    def test_new_wallet_has_144_writs(self):
        wallet = Wallet.objects.get(user = self.user)
        self.assertEqual(wallet.writs, 144)

    def test_new_wallet_has_0_esteem(self):
        wallet = Wallet.objects.get(user=self.user)
        self.assertEqual(wallet.esteem, 0)

class TokenCreationTest(TestCase):
    def setUp(self):
        self.user = User.objects.create(email="capman@test.io")

    def test_coin_on_a_string_created_for_new_user(self):
        self.assertTrue(
            Token.objects.filter(user=self.user, token_type=Token.COIN).exists()
        )

    def test_free_token_created_for_new_user(self):
        self.assertTrue(
            Token.objects.filter(user=self.user, token_type=Token.FREE).exists()
        )

    def test_coin_on_a_string_has_no_expiry(self):
        coin = Token.objects.get(user=self.user, token_type=Token.COIN)
        self.assertIsNone(coin.expires_at)

    def test_free_token_has_expiry_within_7_days(self):
        free = Token.objects.get(user=self.user, token_type=Token.FREE)
        self.assertIsNotNone(free.expires_at)
        delta = free.expires_at - timezone.now()
        self.assertLessEqual(delta.days, 7)
        self.assertGreater(delta.total_seconds(), 0)