import logging
import os
import re
import shutil
import uuid
from datetime import datetime

import allure
import pytest
import yaml
from binary_version_helper import get_local_binaries_versions, get_remote_binaries_versions
from common import ASSETS_DIR, FREE_STORAGE, HOSTING_CONFIG_FILE, NEOFS_NETMAP_DICT, WALLET_PASS
from env_properties import save_env_properties
from neofs_testlib.hosting import Hosting
from neofs_testlib.reporter import AllureHandler, get_reporter
from neofs_testlib.shell import LocalShell, Shell
from neofs_testlib.utils.wallet import init_wallet
from payment_neogo import deposit_gas, transfer_gas
from pytest import FixtureRequest
from python_keywords.node_management import node_healthcheck
from wallet import WalletFactory

logger = logging.getLogger("NeoLogger")


def pytest_collection_modifyitems(items):
    # Make network tests last based on @pytest.mark.node_mgmt
    def priority(item: pytest.Item) -> int:
        is_node_mgmt_test = item.get_closest_marker("node_mgmt")
        return 0 if not is_node_mgmt_test else 1

    items.sort(key=lambda item: priority(item))


@pytest.fixture(scope="session")
def configure_testlib():
    get_reporter().register_handler(AllureHandler())
    yield


@pytest.fixture(scope="session")
def client_shell(configure_testlib) -> Shell:
    yield LocalShell()


@pytest.fixture(scope="session")
def hosting(configure_testlib) -> Hosting:
    with open(HOSTING_CONFIG_FILE, "r") as file:
        hosting_config = yaml.full_load(file)

    hosting_instance = Hosting()
    hosting_instance.configure(hosting_config)
    yield hosting_instance


@pytest.fixture(scope="session")
def require_multiple_hosts(hosting: Hosting):
    """Designates tests that require environment with multiple hosts.

    These tests will be skipped on an environment that has only 1 host.
    """
    if len(hosting.hosts) <= 1:
        pytest.skip("Test only works with multiple hosts")
    yield


@pytest.fixture(scope="session")
def wallet_factory(prepare_tmp_dir: str, client_shell: Shell) -> WalletFactory:
    return WalletFactory(prepare_tmp_dir, client_shell)


@pytest.fixture(scope="session", autouse=True)
@allure.title("Check binary versions")
def check_binary_versions(request, hosting: Hosting, client_shell: Shell):
    local_versions = get_local_binaries_versions(client_shell)
    remote_versions = get_remote_binaries_versions(hosting)

    all_versions = {**local_versions, **remote_versions}
    save_env_properties(request.config, all_versions)


@pytest.fixture(scope="session")
@allure.title("Prepare tmp directory")
def prepare_tmp_dir():
    with allure.step("Prepare tmp directory"):
        full_path = os.path.join(os.getcwd(), ASSETS_DIR)
        shutil.rmtree(full_path, ignore_errors=True)
        os.mkdir(full_path)

    yield full_path

    with allure.step("Remove tmp directory"):
        shutil.rmtree(full_path)


@pytest.fixture(scope="function", autouse=True)
@allure.title("Analyze logs")
def analyze_logs(prepare_tmp_dir: str, hosting: Hosting, request: FixtureRequest):
    start_time = datetime.utcnow()
    yield
    end_time = datetime.utcnow()

    # Skip tests where we expect failures in logs
    if request.node.get_closest_marker("no_log_analyze"):
        with allure.step("Skip analyze logs due to no_log_analyze mark"):
            return

    # Test name may exceed os NAME_MAX (255 bytes), so we use test start datetime instead
    start_time_str = start_time.strftime("%Y_%m_%d_%H_%M_%S_%f")
    logs_dir = os.path.join(prepare_tmp_dir, f"logs_{start_time_str}")
    dump_logs(hosting, logs_dir, start_time, end_time)
    check_logs(logs_dir)


@pytest.fixture(scope="session", autouse=True)
@allure.title("Collect logs")
def collect_logs(prepare_tmp_dir, hosting: Hosting):
    start_time = datetime.utcnow()
    yield
    end_time = datetime.utcnow()

    # Dump logs to temp directory (because they might be too large to keep in RAM)
    logs_dir = os.path.join(prepare_tmp_dir, "logs")
    dump_logs(hosting, logs_dir, start_time, end_time)
    attach_logs(logs_dir)


@pytest.fixture(scope="session", autouse=True)
@allure.title("Run health check for all storage nodes")
def run_health_check(collect_logs, hosting: Hosting):
    failed_nodes = []
    for node_name in NEOFS_NETMAP_DICT.keys():
        health_check = node_healthcheck(hosting, node_name)
        if health_check.health_status != "READY" or health_check.network_status != "ONLINE":
            failed_nodes.append(node_name)

    if failed_nodes:
        raise AssertionError(f"Nodes {failed_nodes} are not healthy")


@pytest.fixture(scope="session")
@allure.title("Prepare wallet and deposit")
def prepare_wallet_and_deposit(client_shell, prepare_tmp_dir):
    wallet_path = os.path.join(os.getcwd(), ASSETS_DIR, f"{str(uuid.uuid4())}.json")
    init_wallet(wallet_path, WALLET_PASS)
    allure.attach.file(wallet_path, os.path.basename(wallet_path), allure.attachment_type.JSON)

    if not FREE_STORAGE:
        deposit = 30
        transfer_gas(
            shell=client_shell,
            amount=deposit + 1,
            wallet_to_path=wallet_path,
            wallet_to_password=WALLET_PASS,
        )
        deposit_gas(
            shell=client_shell,
            amount=deposit,
            wallet_from_path=wallet_path,
            wallet_from_password=WALLET_PASS,
        )

    return wallet_path


def check_logs(logs_dir: str):
    problem_pattern = r"\Wpanic\W|\Woom\W"

    log_file_paths = []
    for directory_path, _, file_names in os.walk(logs_dir):
        log_file_paths += [
            os.path.join(directory_path, file_name)
            for file_name in file_names
            if re.match(r"\.(txt|log)", os.path.splitext(file_name)[-1], flags=re.IGNORECASE)
        ]

    logs_with_problem = []
    for file_path in log_file_paths:
        with open(file_path, "r") as log_file:
            if re.search(problem_pattern, log_file.read(), flags=re.IGNORECASE):
                attach_logs(logs_dir)
                logs_with_problem.append(file_path)
    if logs_with_problem:
        raise pytest.fail(f"System logs {', '.join(logs_with_problem)} contain critical errors")


def dump_logs(hosting: Hosting, logs_dir: str, since: datetime, until: datetime) -> None:
    # Dump logs to temp directory (because they might be too large to keep in RAM)
    os.makedirs(logs_dir)

    for host in hosting.hosts:
        host.dump_logs(logs_dir, since=since, until=until)


def attach_logs(logs_dir: str) -> None:
    # Zip all files and attach to Allure because it is more convenient to download a single
    # zip with all logs rather than mess with individual logs files per service or node
    logs_zip_file_path = shutil.make_archive(logs_dir, "zip", logs_dir)
    allure.attach.file(logs_zip_file_path, name="logs.zip", extension="zip")