import os
import pytest
import requests
from time import sleep
from requests_wrapper import ELASTICSEARCH_REFRESH_INTERVAL_SECONDS

from tests.utils import (
    get_frontend_url,
    wait_for_healthcheck_util,
    get_admin_credentials,
)


# Disable telemetry
os.environ["DATAHUB_TELEMETRY_ENABLED"] = "false"

(admin_user, admin_pass) = get_admin_credentials()


@pytest.fixture(scope="session")
def wait_for_healthchecks():
    wait_for_healthcheck_util()
    yield


@pytest.mark.dependency()
def test_healthchecks(wait_for_healthchecks):
    # Call to wait_for_healthchecks fixture will do the actual functionality.
    pass


@pytest.mark.dependency(depends=["test_healthchecks"])
@pytest.fixture(scope="class", autouse=True)
def custom_user_setup():
    """Fixture to execute setup before and tear down after all tests are run"""
    admin_session = loginAs(admin_user, admin_pass)

    res_data = removeUser(admin_session, "urn:li:corpuser:user")
    assert res_data
    assert "error" not in res_data

    # Test getting the invite token
    get_invite_token_json = {
        "query": """query getInviteToken($input: GetInviteTokenInput!) {\n
            getInviteToken(input: $input){\n
              inviteToken\n
            }\n
        }""",
        "variables": {"input": {}},
    }

    get_invite_token_response = admin_session.post(
        f"{get_frontend_url()}/api/v2/graphql", json=get_invite_token_json
    )
    get_invite_token_response.raise_for_status()
    get_invite_token_res_data = get_invite_token_response.json()

    assert get_invite_token_res_data
    assert get_invite_token_res_data["data"]
    invite_token = get_invite_token_res_data["data"]["getInviteToken"]["inviteToken"]
    assert invite_token is not None
    assert "error" not in invite_token

    # Pass the invite token when creating the user
    sign_up_json = {
        "fullName": "Test User",
        "email": "user",
        "password": "user",
        "title": "Date Engineer",
        "inviteToken": invite_token,
    }

    sign_up_response = admin_session.post(
        f"{get_frontend_url()}/signUp", json=sign_up_json
    )
    sign_up_response.raise_for_status()
    assert sign_up_response
    assert "error" not in sign_up_response
    # Sleep for eventual consistency
    sleep(ELASTICSEARCH_REFRESH_INTERVAL_SECONDS)

    # signUp will override the session cookie to the new user to be signed up.
    admin_session.cookies.clear()
    admin_session = loginAs(admin_user, admin_pass)

    # Make user created user is there.
    res_data = listUsers(admin_session)
    assert res_data["data"]
    assert res_data["data"]["listUsers"]
    assert {"username": "user"} in res_data["data"]["listUsers"]["users"]

    yield

    # Delete created user
    res_data = removeUser(admin_session, "urn:li:corpuser:user")
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["removeUser"] == True
    # Sleep for eventual consistency
    sleep(ELASTICSEARCH_REFRESH_INTERVAL_SECONDS)

    # Make user created user is not there.
    res_data = listUsers(admin_session)
    assert res_data["data"]
    assert res_data["data"]["listUsers"]
    assert {"username": "user"} not in res_data["data"]["listUsers"]["users"]


@pytest.mark.dependency(depends=["test_healthchecks"])
@pytest.fixture(autouse=True)
def access_token_setup():
    """Fixture to execute asserts before and after a test is run"""
    admin_session = loginAs(admin_user, admin_pass)

    res_data = listAccessTokens(admin_session)
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["listAccessTokens"]["total"] == 0
    assert not res_data["data"]["listAccessTokens"]["tokens"]

    yield

    # Clean up
    res_data = listAccessTokens(admin_session)
    for metadata in res_data["data"]["listAccessTokens"]["tokens"]:
        revokeAccessToken(admin_session, metadata["id"])

    # Sleep for eventual consistency
    sleep(ELASTICSEARCH_REFRESH_INTERVAL_SECONDS)


@pytest.mark.dependency(depends=["test_healthchecks"])
def test_admin_can_create_list_and_revoke_tokens(wait_for_healthchecks):
    admin_session = loginAs(admin_user, admin_pass)

    # Using a super account, there should be no tokens
    res_data = listAccessTokens(admin_session)
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["listAccessTokens"]["total"] is not None
    assert len(res_data["data"]["listAccessTokens"]["tokens"]) == 0

    # Using a super account, generate a token for itself.
    res_data = generateAccessToken_v2(admin_session, f"urn:li:corpuser:{admin_user}")
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["createAccessToken"]
    assert res_data["data"]["createAccessToken"]["accessToken"]
    assert (
        res_data["data"]["createAccessToken"]["metadata"]["actorUrn"]
        == f"urn:li:corpuser:{admin_user}"
    )
    admin_tokenId = res_data["data"]["createAccessToken"]["metadata"]["id"]
    # Sleep for eventual consistency
    sleep(ELASTICSEARCH_REFRESH_INTERVAL_SECONDS)

    # Using a super account, list the previously created token.
    res_data = listAccessTokens(admin_session)
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["listAccessTokens"]["total"] is not None
    assert len(res_data["data"]["listAccessTokens"]["tokens"]) == 1
    assert (
        res_data["data"]["listAccessTokens"]["tokens"][0]["actorUrn"]
        == f"urn:li:corpuser:{admin_user}"
    )
    assert (
        res_data["data"]["listAccessTokens"]["tokens"][0]["ownerUrn"]
        == f"urn:li:corpuser:{admin_user}"
    )

    # Check that the super account can revoke tokens that it created
    res_data = revokeAccessToken(admin_session, admin_tokenId)
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["revokeAccessToken"]
    assert res_data["data"]["revokeAccessToken"] == True
    # Sleep for eventual consistency
    sleep(ELASTICSEARCH_REFRESH_INTERVAL_SECONDS)

    # Using a super account, there should be no tokens
    res_data = listAccessTokens(admin_session)
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["listAccessTokens"]["total"] is not None
    assert len(res_data["data"]["listAccessTokens"]["tokens"]) == 0


@pytest.mark.dependency(depends=["test_healthchecks"])
def test_admin_can_create_and_revoke_tokens_for_other_user(wait_for_healthchecks):
    admin_session = loginAs(admin_user, admin_pass)

    # Using a super account, there should be no tokens
    res_data = listAccessTokens(admin_session)
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["listAccessTokens"]["total"] is not None
    assert len(res_data["data"]["listAccessTokens"]["tokens"]) == 0

    # Using a super account, generate a token for another user.
    res_data = generateAccessToken_v2(admin_session, "urn:li:corpuser:user")
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["createAccessToken"]
    assert res_data["data"]["createAccessToken"]["accessToken"]
    assert (
        res_data["data"]["createAccessToken"]["metadata"]["actorUrn"]
        == "urn:li:corpuser:user"
    )
    user_tokenId = res_data["data"]["createAccessToken"]["metadata"]["id"]
    # Sleep for eventual consistency
    sleep(ELASTICSEARCH_REFRESH_INTERVAL_SECONDS)

    # Using a super account, list the previously created tokens.
    res_data = listAccessTokens(admin_session)
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["listAccessTokens"]["total"] is not None
    assert len(res_data["data"]["listAccessTokens"]["tokens"]) == 1
    assert (
        res_data["data"]["listAccessTokens"]["tokens"][0]["actorUrn"]
        == "urn:li:corpuser:user"
    )
    assert (
        res_data["data"]["listAccessTokens"]["tokens"][0]["ownerUrn"]
        == f"urn:li:corpuser:{admin_user}"
    )

    # Check that the super account can revoke tokens that it created for another user
    res_data = revokeAccessToken(admin_session, user_tokenId)
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["revokeAccessToken"]
    assert res_data["data"]["revokeAccessToken"] == True
    # Sleep for eventual consistency
    sleep(ELASTICSEARCH_REFRESH_INTERVAL_SECONDS)

    # Using a super account, there should be no tokens
    res_data = listAccessTokens(admin_session)
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["listAccessTokens"]["total"] is not None
    assert len(res_data["data"]["listAccessTokens"]["tokens"]) == 0


@pytest.mark.dependency(depends=["test_healthchecks"])
def test_non_admin_can_create_list_revoke_tokens(wait_for_healthchecks):
    user_session = loginAs("user", "user")

    # Normal user should be able to generate token for himself.
    res_data = generateAccessToken_v2(user_session, "urn:li:corpuser:user")
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["createAccessToken"]
    assert res_data["data"]["createAccessToken"]["accessToken"]
    assert (
        res_data["data"]["createAccessToken"]["metadata"]["actorUrn"]
        == "urn:li:corpuser:user"
    )
    user_tokenId = res_data["data"]["createAccessToken"]["metadata"]["id"]
    # Sleep for eventual consistency
    sleep(ELASTICSEARCH_REFRESH_INTERVAL_SECONDS)

    # User should be able to list his own token
    res_data = listAccessTokens(
        user_session, [{"field": "ownerUrn", "values": ["urn:li:corpuser:user"]}]
    )
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["listAccessTokens"]["total"] is not None
    assert len(res_data["data"]["listAccessTokens"]["tokens"]) == 1
    assert (
        res_data["data"]["listAccessTokens"]["tokens"][0]["actorUrn"]
        == "urn:li:corpuser:user"
    )
    assert (
        res_data["data"]["listAccessTokens"]["tokens"][0]["ownerUrn"]
        == "urn:li:corpuser:user"
    )
    assert res_data["data"]["listAccessTokens"]["tokens"][0]["id"] == user_tokenId

    # User should be able to revoke his own token
    res_data = revokeAccessToken(user_session, user_tokenId)
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["revokeAccessToken"]
    assert res_data["data"]["revokeAccessToken"] == True
    # Sleep for eventual consistency
    sleep(ELASTICSEARCH_REFRESH_INTERVAL_SECONDS)

    # Using a normal account, check that all its tokens where removed.
    res_data = listAccessTokens(
        user_session, [{"field": "ownerUrn", "values": ["urn:li:corpuser:user"]}]
    )
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["listAccessTokens"]["total"] is not None
    assert len(res_data["data"]["listAccessTokens"]["tokens"]) == 0


@pytest.mark.dependency(depends=["test_healthchecks"])
def test_admin_can_manage_tokens_generated_by_other_user(wait_for_healthchecks):
    admin_session = loginAs(admin_user, admin_pass)

    # Using a super account, there should be no tokens
    res_data = listAccessTokens(admin_session)
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["listAccessTokens"]["total"] is not None
    assert len(res_data["data"]["listAccessTokens"]["tokens"]) == 0

    admin_session.cookies.clear()
    user_session = loginAs("user", "user")
    res_data = generateAccessToken_v2(user_session, "urn:li:corpuser:user")
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["createAccessToken"]
    assert res_data["data"]["createAccessToken"]["accessToken"]
    assert (
        res_data["data"]["createAccessToken"]["metadata"]["actorUrn"]
        == "urn:li:corpuser:user"
    )
    assert (
        res_data["data"]["createAccessToken"]["metadata"]["ownerUrn"]
        == "urn:li:corpuser:user"
    )
    user_tokenId = res_data["data"]["createAccessToken"]["metadata"]["id"]
    # Sleep for eventual consistency
    sleep(ELASTICSEARCH_REFRESH_INTERVAL_SECONDS)

    # Admin should be able to list other tokens
    user_session.cookies.clear()
    admin_session = loginAs(admin_user, admin_pass)
    res_data = listAccessTokens(
        admin_session, [{"field": "ownerUrn", "values": ["urn:li:corpuser:user"]}]
    )
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["listAccessTokens"]["total"] is not None
    assert len(res_data["data"]["listAccessTokens"]["tokens"]) == 1
    assert (
        res_data["data"]["listAccessTokens"]["tokens"][0]["actorUrn"]
        == "urn:li:corpuser:user"
    )
    assert (
        res_data["data"]["listAccessTokens"]["tokens"][0]["ownerUrn"]
        == "urn:li:corpuser:user"
    )
    assert res_data["data"]["listAccessTokens"]["tokens"][0]["id"] == user_tokenId

    # Admin can delete token created by someone else.
    admin_session.cookies.clear()
    admin_session = loginAs(admin_user, admin_pass)
    res_data = revokeAccessToken(admin_session, user_tokenId)
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["revokeAccessToken"]
    assert res_data["data"]["revokeAccessToken"] == True
    # Sleep for eventual consistency
    sleep(ELASTICSEARCH_REFRESH_INTERVAL_SECONDS)

    # Using a normal account, check that all its tokens where removed.
    user_session.cookies.clear()
    user_session = loginAs("user", "user")
    res_data = listAccessTokens(
        user_session, [{"field": "ownerUrn", "values": ["urn:li:corpuser:user"]}]
    )
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["listAccessTokens"]["total"] is not None
    assert len(res_data["data"]["listAccessTokens"]["tokens"]) == 0

    # Using the super account, check that all tokens where removed.
    admin_session = loginAs(admin_user, admin_pass)
    res_data = listAccessTokens(
        admin_session, [{"field": "ownerUrn", "values": ["urn:li:corpuser:user"]}]
    )
    assert res_data
    assert res_data["data"]
    assert res_data["data"]["listAccessTokens"]["total"] is not None
    assert len(res_data["data"]["listAccessTokens"]["tokens"]) == 0


@pytest.mark.dependency(depends=["test_healthchecks"])
def test_non_admin_can_not_generate_tokens_for_others(wait_for_healthchecks):
    user_session = loginAs("user", "user")
    # Normal user should not be able to generate token for another user
    res_data = generateAccessToken_v2(user_session, f"urn:li:corpuser:{admin_user}")
    assert res_data
    assert res_data["errors"]
    assert (
        res_data["errors"][0]["message"]
        == "Unauthorized to perform this action. Please contact your DataHub administrator."
    )


def generateAccessToken_v2(session, actorUrn):
    # Create new token
    json = {
        "query": """mutation createAccessToken($input: CreateAccessTokenInput!) {\n
            createAccessToken(input: $input) {\n
              accessToken\n
              metadata {\n
                id\n
                actorUrn\n
                ownerUrn\n
                name\n
                description\n
              }
            }\n
        }""",
        "variables": {
            "input": {
                "type": "PERSONAL",
                "actorUrn": actorUrn,
                "duration": "ONE_HOUR",
                "name": "my token",
            }
        },
    }

    response = session.post(f"{get_frontend_url()}/api/v2/graphql", json=json)
    response.raise_for_status()
    return response.json()


def listAccessTokens(session, filters=[]):
    # Get count of existing tokens
    input = {
        "start": "0",
        "count": "20",
    }

    if filters:
        input["filters"] = filters

    json = {
        "query": """query listAccessTokens($input: ListAccessTokenInput!) {\n
            listAccessTokens(input: $input) {\n
              start\n
              count\n
              total\n
              tokens {\n
                urn\n
                id\n
                actorUrn\n
                ownerUrn\n
              }\n
            }\n
        }""",
        "variables": {"input": input},
    }

    response = session.post(f"{get_frontend_url()}/api/v2/graphql", json=json)
    response.raise_for_status()
    return response.json()


def revokeAccessToken(session, tokenId):
    # Revoke token
    json = {
        "query": """mutation revokeAccessToken($tokenId: String!) {\n
            revokeAccessToken(tokenId: $tokenId)
        }""",
        "variables": {"tokenId": tokenId},
    }

    response = session.post(f"{get_frontend_url()}/api/v2/graphql", json=json)
    response.raise_for_status()

    return response.json()


def loginAs(username, password):
    session = requests.Session()

    headers = {
        "Content-Type": "application/json",
    }
    data = '{"username":"' + username + '", "password":"' + password + '"}'
    response = session.post(f"{get_frontend_url()}/logIn", headers=headers, data=data)
    response.raise_for_status()

    return session


def removeUser(session, urn):
    # Remove user
    json = {
        "query": """mutation removeUser($urn: String!) {\n
            removeUser(urn: $urn)
        }""",
        "variables": {"urn": urn},
    }

    response = session.post(f"{get_frontend_url()}/api/v2/graphql", json=json)

    response.raise_for_status()
    return response.json()


def listUsers(session):
    input = {
        "start": "0",
        "count": "20",
    }

    # list users
    json = {
        "query": """query listUsers($input: ListUsersInput!) {\n
            listUsers(input: $input) {\n
              start\n
              count\n
              total\n
              users {\n
                username\n
              }
            }
        }""",
        "variables": {"input": input},
    }

    response = session.post(f"{get_frontend_url()}/api/v2/graphql", json=json)

    response.raise_for_status()
    return response.json()