import pytest
import tenacity

from tests.utils import get_root_urn, get_sleep_info

TEST_POLICY_NAME = "Updated Platform Policy"

sleep_sec, sleep_times = get_sleep_info()


@pytest.fixture(scope="module", autouse=True)
def test_frontend_list_policies(auth_session):
    """Fixture to execute setup before and tear down after all tests are run"""
    res_data = listPolicies(auth_session)

    assert res_data
    assert res_data["data"]
    assert res_data["data"]["listPolicies"]
    assert res_data["data"]["listPolicies"]["start"] == 0
    assert res_data["data"]["listPolicies"]["count"] > 0
    assert len(res_data["data"]["listPolicies"]["policies"]) > 0

    # Verify that policy to be created does not exist before the test.
    # If it does, this test class's state is tainted
    result = filter(
        lambda x: x["name"] == TEST_POLICY_NAME,
        res_data["data"]["listPolicies"]["policies"],
    )
    assert len(list(result)) == 0

    # Run remaining tests.
    yield

    res_data = listPolicies(auth_session)

    assert res_data
    assert res_data["data"]
    assert res_data["data"]["listPolicies"]

    # Verify that policy that was created is no longer in the list
    result = filter(
        lambda x: x["name"] == TEST_POLICY_NAME,
        res_data["data"]["listPolicies"]["policies"],
    )
    assert len(list(result)) == 0


@tenacity.retry(
    stop=tenacity.stop_after_attempt(sleep_times), wait=tenacity.wait_fixed(sleep_sec)
)
def _ensure_policy_present(auth_session, new_urn):
    res_data = listPolicies(auth_session)

    assert res_data
    assert res_data["data"]
    assert res_data["data"]["listPolicies"]

    # Verify that the updated policy appears in the list and has the appropriate changes
    result = list(
        filter(
            lambda x: x["urn"] == new_urn, res_data["data"]["listPolicies"]["policies"]
        )
    )
    print(result)

    assert len(result) == 1
    assert result[0]["description"] == "Updated Metadaata Policy"
    assert result[0]["privileges"] == ["EDIT_ENTITY_TAGS", "EDIT_ENTITY_GLOSSARY_TERMS"]
    assert result[0]["actors"]["allUsers"]


def test_frontend_policy_operations(auth_session):
    json = {
        "query": """mutation createPolicy($input: PolicyUpdateInput!) {\n
            createPolicy(input: $input) }""",
        "variables": {
            "input": {
                "type": "METADATA",
                "name": "Test Metadata Policy",
                "description": "My Metadaata Policy",
                "state": "ACTIVE",
                "resources": {"type": "dataset", "allResources": True},
                "privileges": ["EDIT_ENTITY_TAGS"],
                "actors": {
                    "users": [get_root_urn()],
                    "resourceOwners": False,
                    "allUsers": False,
                    "allGroups": False,
                },
            }
        },
    }

    response = auth_session.post(
        f"{auth_session.frontend_url()}/api/v2/graphql", json=json
    )
    response.raise_for_status()
    res_data = response.json()

    assert res_data
    assert res_data["data"]
    assert res_data["data"]["createPolicy"]

    new_urn = res_data["data"]["createPolicy"]

    update_json = {
        "query": """mutation updatePolicy($urn: String!, $input: PolicyUpdateInput!) {\n
            updatePolicy(urn: $urn, input: $input) }""",
        "variables": {
            "urn": new_urn,
            "input": {
                "type": "METADATA",
                "state": "ACTIVE",
                "name": "Test Metadata Policy",
                "description": "Updated Metadaata Policy",
                "privileges": ["EDIT_ENTITY_TAGS", "EDIT_ENTITY_GLOSSARY_TERMS"],
                "actors": {
                    "resourceOwners": False,
                    "allUsers": True,
                    "allGroups": False,
                },
            },
        },
    }

    response = auth_session.post(
        f"{auth_session.frontend_url()}/api/v2/graphql", json=update_json
    )
    response.raise_for_status()
    res_data = response.json()

    # Check updated was submitted successfully
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["updatePolicy"]
    assert res_data["data"]["updatePolicy"] == new_urn

    _ensure_policy_present(auth_session, new_urn)

    # Now test that the policy can be deleted
    json = {
        "query": """mutation deletePolicy($urn: String!) {\n
            deletePolicy(urn: $urn) }""",
        "variables": {"urn": new_urn},
    }

    response = auth_session.post(
        f"{auth_session.frontend_url()}/api/v2/graphql", json=json
    )
    response.raise_for_status()
    res_data = response.json()

    res_data = listPolicies(auth_session)

    assert res_data
    assert res_data["data"]
    assert res_data["data"]["listPolicies"]

    # Verify that the URN is no longer in the list
    result = filter(
        lambda x: x["urn"] == new_urn,
        res_data["data"]["listPolicies"]["policies"],
    )
    assert len(list(result)) == 0


def listPolicies(auth_session):
    json = {
        "query": """query listPolicies($input: ListPoliciesInput!) {\n
            listPolicies(input: $input) {\n
                start\n
                count\n
                total\n
                policies {\n
                    urn\n
                    type\n
                    name\n
                    description\n
                    state\n
                    resources {\n
                      type\n
                      allResources\n
                      resources\n
                    }\n
                    privileges\n
                    actors {\n
                      users\n
                      groups\n
                      allUsers\n
                      allGroups\n
                      resourceOwners\n
                    }\n
                    editable\n
                }\n
            }\n
        }""",
        "variables": {
            "input": {
                "start": "0",
                "count": "20",
            }
        },
    }
    response = auth_session.post(
        f"{auth_session.frontend_url()}/api/v2/graphql", json=json
    )
    response.raise_for_status()

    return response.json()