import logging
from random import choices
from time import sleep

import allure
import pytest
from common import (
    STORAGE_NODE_SSH_PASSWORD,
    STORAGE_NODE_SSH_PRIVATE_KEY_PATH,
    STORAGE_NODE_SSH_USER,
)
from failover_utils import wait_all_storage_node_returned, wait_object_replication_on_nodes
from file_helper import generate_file, get_file_hash
from iptables_helper import IpTablesHelper
from neofs_testlib.hosting import Hosting
from python_keywords.container import create_container
from python_keywords.neofs_verbs import get_object, put_object
from ssh_helper import HostClient
from wellknown_acl import PUBLIC_ACL

logger = logging.getLogger("NeoLogger")
STORAGE_NODE_COMMUNICATION_PORT = "8080"
STORAGE_NODE_COMMUNICATION_PORT_TLS = "8082"
PORTS_TO_BLOCK = [STORAGE_NODE_COMMUNICATION_PORT, STORAGE_NODE_COMMUNICATION_PORT_TLS]
blocked_hosts = []


@pytest.fixture(autouse=True)
@allure.step("Restore network")
def restore_network(hosting: Hosting):
    yield

    not_empty = len(blocked_hosts) != 0
    for host in list(blocked_hosts):
        with allure.step(f"Start storage node {host}"):
            client = HostClient(
                ip=host,
                login=STORAGE_NODE_SSH_USER,
                password=STORAGE_NODE_SSH_PASSWORD,
                private_key_path=STORAGE_NODE_SSH_PRIVATE_KEY_PATH,
            )
            with client.create_ssh_connection():
                IpTablesHelper.restore_input_traffic_to_port(client, PORTS_TO_BLOCK)
        blocked_hosts.remove(host)
    if not_empty:
        wait_all_storage_node_returned(hosting)


@allure.title("Block Storage node traffic")
@pytest.mark.failover
@pytest.mark.failover_net
def test_block_storage_node_traffic(prepare_wallet_and_deposit, client_shell, require_multiple_hosts):
    """
    Block storage nodes traffic using iptables and wait for replication for objects.
    """
    wallet = prepare_wallet_and_deposit
    placement_rule = "REP 2 IN X CBF 2 SELECT 2 FROM * AS X"
    excluded_nodes = []
    wakeup_node_timeout = 10  # timeout to let nodes detect that traffic has blocked
    nodes_to_block_count = 2

    source_file_path = generate_file()
    cid = create_container(wallet, shell=client_shell, rule=placement_rule, basic_acl=PUBLIC_ACL)
    oid = put_object(wallet, source_file_path, cid, shell=client_shell)
    nodes = wait_object_replication_on_nodes(wallet, cid, oid, 2, shell=client_shell)

    logger.info(f"Nodes are {nodes}")
    random_nodes = [(node, node.split(":")[0]) for node in nodes]
    if nodes_to_block_count > len(nodes):
        random_nodes = [(node, node.split(":")[0]) for node in choices(nodes, k=2)]

    for random_node, random_node_ip in random_nodes:
        client = HostClient(
            ip=random_node_ip,
            login=STORAGE_NODE_SSH_USER,
            password=STORAGE_NODE_SSH_PASSWORD,
            private_key_path=STORAGE_NODE_SSH_PRIVATE_KEY_PATH,
        )

        with allure.step(f"Block incoming traffic for node {random_node} on port {PORTS_TO_BLOCK}"):
            with client.create_ssh_connection():
                IpTablesHelper.drop_input_traffic_to_port(client, PORTS_TO_BLOCK)
            blocked_hosts.append(random_node_ip)
            excluded_nodes.append(random_node)
            sleep(wakeup_node_timeout)

        new_nodes = wait_object_replication_on_nodes(
            wallet, cid, oid, 2, excluded_nodes=excluded_nodes
        )

        assert random_node not in new_nodes

        got_file_path = get_object(wallet, cid, oid, shell=client_shell, endpoint=new_nodes[0])
        assert get_file_hash(source_file_path) == get_file_hash(got_file_path)

    for random_node, random_node_ip in random_nodes:
        client = HostClient(
            ip=random_node_ip,
            login=STORAGE_NODE_SSH_USER,
            password=STORAGE_NODE_SSH_PASSWORD,
            private_key_path=STORAGE_NODE_SSH_PRIVATE_KEY_PATH,
        )

        with allure.step(
            f"Unblock incoming traffic for node {random_node} on port {PORTS_TO_BLOCK}"
        ):
            with client.create_ssh_connection():
                IpTablesHelper.restore_input_traffic_to_port(client, PORTS_TO_BLOCK)
            blocked_hosts.remove(random_node_ip)
        sleep(wakeup_node_timeout)

    new_nodes = wait_object_replication_on_nodes(wallet, cid, oid, 2, shell=client_shell)

    got_file_path = get_object(wallet, cid, oid, shell=client_shell, endpoint=new_nodes[0])
    assert get_file_hash(source_file_path) == get_file_hash(got_file_path)