import tempfile
from datetime import date, datetime, timezone

from django.core.files.uploadedfile import SimpleUploadedFile
from django.test import TestCase
from netaddr import IPAddress, IPNetwork

from dcim.models import DeviceRole
from extras.scripts import *

CHOICES = (
    ('ff0000', 'Red'),
    ('00ff00', 'Green'),
    ('0000ff', 'Blue')
)

YAML_DATA = """
Foo: 123
Bar: 456
Baz:
 - A
 - B
 - C
"""

JSON_DATA = """
{
  "Foo": 123,
  "Bar": 456,
  "Baz": ["A", "B", "C"]
}
"""


class ScriptTest(TestCase):

    def test_load_yaml(self):
        datafile = tempfile.NamedTemporaryFile()
        datafile.write(bytes(YAML_DATA, 'UTF-8'))
        datafile.seek(0)

        data = Script().load_yaml(datafile.name)
        self.assertEqual(data, {
            'Foo': 123,
            'Bar': 456,
            'Baz': ['A', 'B', 'C'],
        })

    def test_load_json(self):
        datafile = tempfile.NamedTemporaryFile()
        datafile.write(bytes(JSON_DATA, 'UTF-8'))
        datafile.seek(0)

        data = Script().load_json(datafile.name)
        self.assertEqual(data, {
            'Foo': 123,
            'Bar': 456,
            'Baz': ['A', 'B', 'C'],
        })


class ScriptVariablesTest(TestCase):

    def test_stringvar(self):

        class TestScript(Script):

            var1 = StringVar(
                min_length=3,
                max_length=3,
                regex=r'[a-z]+'
            )

        # Validate min_length enforcement
        data = {'var1': 'xx'}
        form = TestScript().as_form(data, None)
        self.assertFalse(form.is_valid())
        self.assertIn('var1', form.errors)

        # Validate max_length enforcement
        data = {'var1': 'xxxx'}
        form = TestScript().as_form(data, None)
        self.assertFalse(form.is_valid())
        self.assertIn('var1', form.errors)

        # Validate regex enforcement
        data = {'var1': 'ABC'}
        form = TestScript().as_form(data, None)
        self.assertFalse(form.is_valid())
        self.assertIn('var1', form.errors)

        # Validate valid data
        data = {'var1': 'abc'}
        form = TestScript().as_form(data, None)
        self.assertTrue(form.is_valid())
        self.assertEqual(form.cleaned_data['var1'], data['var1'])

    def test_textvar(self):

        class TestScript(Script):

            var1 = TextVar()

        # Validate valid data
        data = {'var1': 'This is a test string'}
        form = TestScript().as_form(data, None)
        self.assertTrue(form.is_valid())
        self.assertEqual(form.cleaned_data['var1'], data['var1'])

    def test_integervar(self):

        class TestScript(Script):

            var1 = IntegerVar(
                min_value=5,
                max_value=10
            )

        # Validate min_value enforcement
        data = {'var1': 4}
        form = TestScript().as_form(data, None)
        self.assertFalse(form.is_valid())
        self.assertIn('var1', form.errors)

        # Validate max_value enforcement
        data = {'var1': 11}
        form = TestScript().as_form(data, None)
        self.assertFalse(form.is_valid())
        self.assertIn('var1', form.errors)

        # Validate valid data
        data = {'var1': 7}
        form = TestScript().as_form(data, None)
        self.assertTrue(form.is_valid())
        self.assertEqual(form.cleaned_data['var1'], data['var1'])

    def test_booleanvar(self):

        class TestScript(Script):

            var1 = BooleanVar()

        # Validate True
        data = {'var1': True}
        form = TestScript().as_form(data, None)
        self.assertTrue(form.is_valid())
        self.assertEqual(form.cleaned_data['var1'], True)

        # Validate False
        data = {'var1': False}
        form = TestScript().as_form(data, None)
        self.assertTrue(form.is_valid())
        self.assertEqual(form.cleaned_data['var1'], False)

    def test_choicevar(self):

        class TestScript(Script):

            var1 = ChoiceVar(
                choices=CHOICES
            )

        # Validate valid choice
        data = {'var1': 'ff0000'}
        form = TestScript().as_form(data)
        self.assertTrue(form.is_valid())
        self.assertEqual(form.cleaned_data['var1'], 'ff0000')

        # Validate invalid choice
        data = {'var1': 'taupe'}
        form = TestScript().as_form(data)
        self.assertFalse(form.is_valid())

    def test_multichoicevar(self):

        class TestScript(Script):

            var1 = MultiChoiceVar(
                choices=CHOICES
            )

        # Validate single choice
        data = {'var1': ['ff0000']}
        form = TestScript().as_form(data)
        self.assertTrue(form.is_valid())
        self.assertEqual(form.cleaned_data['var1'], ['ff0000'])

        # Validate multiple choices
        data = {'var1': ('ff0000', '00ff00')}
        form = TestScript().as_form(data)
        self.assertTrue(form.is_valid())
        self.assertEqual(form.cleaned_data['var1'], ['ff0000', '00ff00'])

        # Validate invalid choice
        data = {'var1': 'taupe'}
        form = TestScript().as_form(data)
        self.assertFalse(form.is_valid())

    def test_objectvar(self):

        class TestScript(Script):
            var1 = ObjectVar(model=DeviceRole)

        # Populate some objects
        for i in range(1, 6):
            DeviceRole(
                name='Device Role {}'.format(i),
                slug='device-role-{}'.format(i)
            ).save()

        # Validate valid data
        data = {'var1': DeviceRole.objects.first().pk}
        form = TestScript().as_form(data, None)
        self.assertTrue(form.is_valid())
        self.assertEqual(form.cleaned_data['var1'].pk, data['var1'])

    def test_multiobjectvar(self):

        class TestScript(Script):
            var1 = MultiObjectVar(model=DeviceRole)

        # Populate some objects
        for i in range(1, 6):
            DeviceRole(
                name='Device Role {}'.format(i),
                slug='device-role-{}'.format(i)
            ).save()

        # Validate valid data
        data = {'var1': [role.pk for role in DeviceRole.objects.all()[:3]]}
        form = TestScript().as_form(data, None)
        self.assertTrue(form.is_valid())
        self.assertEqual(form.cleaned_data['var1'][0].pk, data['var1'][0])
        self.assertEqual(form.cleaned_data['var1'][1].pk, data['var1'][1])
        self.assertEqual(form.cleaned_data['var1'][2].pk, data['var1'][2])

    def test_filevar(self):

        class TestScript(Script):

            var1 = FileVar()

        # Dummy file
        testfile = SimpleUploadedFile(
            name='test_file.txt',
            content=b'This is a dummy file for testing'
        )

        # Validate valid data
        file_data = {'var1': testfile}
        form = TestScript().as_form(None, file_data)
        self.assertTrue(form.is_valid())
        self.assertEqual(form.cleaned_data['var1'], testfile)

    def test_ipaddressvar(self):

        class TestScript(Script):

            var1 = IPAddressVar()

        # Validate IP network enforcement
        data = {'var1': '1.2.3'}
        form = TestScript().as_form(data, None)
        self.assertFalse(form.is_valid())
        self.assertIn('var1', form.errors)

        # Validate IP mask exclusion
        data = {'var1': '192.0.2.0/24'}
        form = TestScript().as_form(data, None)
        self.assertFalse(form.is_valid())
        self.assertIn('var1', form.errors)

        # Validate valid data
        data = {'var1': '192.0.2.1'}
        form = TestScript().as_form(data, None)
        self.assertTrue(form.is_valid())
        self.assertEqual(form.cleaned_data['var1'], IPAddress(data['var1']))

    def test_ipaddresswithmaskvar(self):

        class TestScript(Script):

            var1 = IPAddressWithMaskVar()

        # Validate IP network enforcement
        data = {'var1': '1.2.3'}
        form = TestScript().as_form(data, None)
        self.assertFalse(form.is_valid())
        self.assertIn('var1', form.errors)

        # Validate IP mask requirement
        data = {'var1': '192.0.2.0'}
        form = TestScript().as_form(data, None)
        self.assertFalse(form.is_valid())
        self.assertIn('var1', form.errors)

        # Validate valid data
        data = {'var1': '192.0.2.0/24'}
        form = TestScript().as_form(data, None)
        self.assertTrue(form.is_valid())
        self.assertEqual(form.cleaned_data['var1'], IPNetwork(data['var1']))

    def test_ipnetworkvar(self):

        class TestScript(Script):

            var1 = IPNetworkVar()

        # Validate IP network enforcement
        data = {'var1': '1.2.3'}
        form = TestScript().as_form(data, None)
        self.assertFalse(form.is_valid())
        self.assertIn('var1', form.errors)

        # Validate host IP check
        data = {'var1': '192.0.2.1/24'}
        form = TestScript().as_form(data, None)
        self.assertFalse(form.is_valid())
        self.assertIn('var1', form.errors)

        # Validate valid data
        data = {'var1': '192.0.2.0/24'}
        form = TestScript().as_form(data, None)
        self.assertTrue(form.is_valid())
        self.assertEqual(form.cleaned_data['var1'], IPNetwork(data['var1']))

    def test_datevar(self):

        class TestScript(Script):

            var1 = DateVar()
            var2 = DateVar(required=False)

        # Test date validation
        data = {'var1': 'not a date'}
        form = TestScript().as_form(data, None)
        self.assertFalse(form.is_valid())
        self.assertIn('var1', form.errors)

        # Validate valid data
        input_date = date(2024, 4, 1)
        data = {'var1': input_date}
        form = TestScript().as_form(data, None)
        self.assertTrue(form.is_valid())
        self.assertEqual(form.cleaned_data['var1'], input_date)
        # Validate required=False works for this Var type
        self.assertEqual(form.cleaned_data['var2'], None)

    def test_datetimevar(self):

        class TestScript(Script):

            var1 = DateTimeVar()
            var2 = DateTimeVar(required=False)

        # Test datetime validation
        data = {'var1': 'not a datetime'}
        form = TestScript().as_form(data, None)
        self.assertFalse(form.is_valid())
        self.assertIn('var1', form.errors)

        # Validate valid data
        input_datetime = datetime(2024, 4, 1, 8, 0, 0, 0, timezone.utc)
        data = {'var1': input_datetime}
        form = TestScript().as_form(data, None)
        self.assertTrue(form.is_valid())
        self.assertEqual(form.cleaned_data['var1'], input_datetime)
        # Validate required=False works for this Var type
        self.assertEqual(form.cleaned_data['var2'], None)