import pytest
from packaging import version
from unit.applications.lang.python import TestApplicationPython
from unit.option import option

prerequisites = {
    'modules': {'python': lambda v: version.parse(v) >= version.parse('3.5')}
}


class TestASGITargets(TestApplicationPython):
    load_module = 'asgi'

    @pytest.fixture(autouse=True)
    def setup_method_fixture(self):
        path = f'{option.test_dir}/python/targets/'

        assert 'success' in self.conf(
            {
                "listeners": {"*:7080": {"pass": "routes"}},
                "routes": [
                    {
                        "match": {"uri": "/1"},
                        "action": {"pass": "applications/targets/1"},
                    },
                    {
                        "match": {"uri": "/2"},
                        "action": {"pass": "applications/targets/2"},
                    },
                ],
                "applications": {
                    "targets": {
                        "type": self.get_application_type(),
                        "processes": {"spare": 0},
                        "working_directory": path,
                        "path": path,
                        "protocol": "asgi",
                        "targets": {
                            "1": {
                                "module": "asgi",
                                "callable": "application_200",
                            },
                            "2": {
                                "module": "asgi",
                                "callable": "application_201",
                            },
                        },
                    }
                },
            }
        )

    def conf_targets(self, targets):
        assert 'success' in self.conf(targets, 'applications/targets/targets')

    def test_asgi_targets(self):
        assert self.get(url='/1')['status'] == 200
        assert self.get(url='/2')['status'] == 201

    def test_asgi_targets_legacy(self):
        self.conf_targets(
            {
                "1": {"module": "asgi", "callable": "legacy_application_200"},
                "2": {"module": "asgi", "callable": "legacy_application_201"},
            }
        )

        assert self.get(url='/1')['status'] == 200
        assert self.get(url='/2')['status'] == 201

    def test_asgi_targets_mix(self):
        self.conf_targets(
            {
                "1": {"module": "asgi", "callable": "application_200"},
                "2": {"module": "asgi", "callable": "legacy_application_201"},
            }
        )

        assert self.get(url='/1')['status'] == 200
        assert self.get(url='/2')['status'] == 201

    def test_asgi_targets_broken(self, skip_alert):
        skip_alert(r'Python failed to get "blah" from module')

        self.conf_targets(
            {
                "1": {"module": "asgi", "callable": "application_200"},
                "2": {"module": "asgi", "callable": "blah"},
            }
        )

        assert self.get(url='/1')['status'] != 200

    def test_asgi_targets_prefix(self):
        self.conf_targets(
            {
                "1": {
                    "module": "asgi",
                    "callable": "application_prefix",
                    "prefix": "/1/",
                },
                "2": {
                    "module": "asgi",
                    "callable": "application_prefix",
                    "prefix": "/api",
                },
            }
        )
        self.conf(
            [
                {
                    "match": {"uri": "/1*"},
                    "action": {"pass": "applications/targets/1"},
                },
                {
                    "match": {"uri": "*"},
                    "action": {"pass": "applications/targets/2"},
                },
            ],
            "routes",
        )

        def check_prefix(url, prefix):
            resp = self.get(url=url)
            assert resp['status'] == 200
            assert resp['headers']['prefix'] == prefix

        check_prefix('/1', '/1')
        check_prefix('/11', 'NULL')
        check_prefix('/1/', '/1')
        check_prefix('/', 'NULL')
        check_prefix('/ap', 'NULL')
        check_prefix('/api', '/api')
        check_prefix('/api/', '/api')
        check_prefix('/api/test/', '/api')
        check_prefix('/apis', 'NULL')
        check_prefix('/apis/', 'NULL')