import logging
from random import choice
from time import sleep

import allure
import pytest
from common import (COMPLEX_OBJ_SIZE, MAINNET_BLOCK_TIME, NEOFS_CONTRACT_CACHE_TIMEOUT,
                    NEOFS_NETMAP_DICT, SHARD_0_GC_SLEEP)
from contract_keywords import tick_epoch
from utility_keywords import generate_file
from python_keywords.container import create_container, get_container
from python_keywords.neofs_verbs import (delete_object, get_object,
                                         head_object, put_object)
from python_keywords.node_management import (drop_object, get_netmap_snapshot,
                                             get_locode,
                                             node_healthcheck,
                                             node_set_status, node_shard_list,
                                             node_shard_set_mode,
                                             start_nodes_remote,
                                             stop_nodes_remote)
from storage_policy import get_nodes_with_object, get_simple_object_copies
from utility import robot_time_to_int
from wellknown_acl import PUBLIC_ACL
from utility import placement_policy_from_container

logger = logging.getLogger('NeoLogger')


@pytest.fixture
@allure.title('Create container and pick the node with data')
def crate_container_and_pick_node(create_remote_connection, prepare_wallet_and_deposit):
    wallet = prepare_wallet_and_deposit
    file_path = generate_file()
    placement_rule = 'REP 1 IN X CBF 1 SELECT 1 FROM * AS X'

    cid = create_container(wallet, rule=placement_rule, basic_acl=PUBLIC_ACL)
    oid = put_object(wallet, file_path, cid)

    nodes = get_nodes_with_object(wallet, cid, oid)
    assert len(nodes) == 1
    node = nodes[0]

    node_name = choice([node_name for node_name, params in NEOFS_NETMAP_DICT.items() if params.get('rpc') == node])

    yield cid, node_name

    shards = node_shard_list(create_remote_connection, node_name)
    assert shards

    for shard in shards:
        node_shard_set_mode(create_remote_connection, node_name, shard, 'read-write')

    node_shard_list(create_remote_connection, node_name)


@pytest.fixture
def start_node_if_needed(create_remote_connection):
    yield
    try:
        start_nodes_remote(create_remote_connection, list(NEOFS_NETMAP_DICT.keys()))
    except Exception as err:
        logger.error(f'Node start fails with error:\n{err}')


@allure.title('Control Operations with storage nodes')
@pytest.mark.node_mgmt
def test_nodes_management(prepare_tmp_dir, create_remote_connection):
    """
    This test checks base control operations with storage nodes (healthcheck, netmap-snapshot, set-status).
    """
    random_node = choice(list(NEOFS_NETMAP_DICT))
    alive_node = choice([node for node in NEOFS_NETMAP_DICT if node != random_node])
    snapshot = get_netmap_snapshot(create_remote_connection, node_name=alive_node)
    assert random_node in snapshot, f'Expected node {random_node} in netmap'

    with allure.step('Run health check for all storage nodes'):
        for node_name in NEOFS_NETMAP_DICT.keys():
            health_check = node_healthcheck(create_remote_connection, node_name)
            assert health_check.health_status == 'READY' and health_check.network_status == 'ONLINE'

    with allure.step(f'Move node {random_node} to offline state'):
        node_set_status(create_remote_connection, random_node, status='offline')

    sleep(robot_time_to_int(MAINNET_BLOCK_TIME))
    tick_epoch()

    with allure.step(f'Check node {random_node} went to offline'):
        health_check = node_healthcheck(create_remote_connection, random_node)
        assert health_check.health_status == 'READY' and health_check.network_status == 'STATUS_UNDEFINED'
        snapshot = get_netmap_snapshot(create_remote_connection, node_name=alive_node)
        assert random_node not in snapshot, f'Expected node {random_node} not in netmap'

    with allure.step(f'Check node {random_node} went to online'):
        node_set_status(create_remote_connection, random_node, status='online')

    sleep(robot_time_to_int(MAINNET_BLOCK_TIME))
    tick_epoch()

    with allure.step(f'Check node {random_node} went to online'):
        health_check = node_healthcheck(create_remote_connection, random_node)
        assert health_check.health_status == 'READY' and health_check.network_status == 'ONLINE'
        snapshot = get_netmap_snapshot(create_remote_connection, node_name=alive_node)
        assert random_node in snapshot, f'Expected node {random_node} in netmap'


@pytest.mark.parametrize('placement_rule,expected_copies', [
    ('REP 2 IN X CBF 2 SELECT 2 FROM * AS X', 2),
    ('REP 2 IN X CBF 1 SELECT 2 FROM * AS X', 2),
    ('REP 3 IN X CBF 1 SELECT 3 FROM * AS X', 3),
    ('REP 1 IN X CBF 1 SELECT 1 FROM * AS X', 1),
    ('REP 1 IN X CBF 2 SELECT 1 FROM * AS X', 1),
    ('REP 4 IN X CBF 1 SELECT 4 FROM * AS X', 4),
    ('REP 2 IN X CBF 1 SELECT 4 FROM * AS X', 2),
])
@pytest.mark.node_mgmt
@allure.title('Test object copies based on placement policy')
def test_placement_policy(prepare_wallet_and_deposit, placement_rule, expected_copies):
    """
    This test checks object's copies based on container's placement policy.
    """
    wallet = prepare_wallet_and_deposit
    file_path = generate_file()
    validate_object_copies(wallet, placement_rule, file_path, expected_copies)


@pytest.mark.parametrize('placement_rule,expected_copies,nodes', [
    ('REP 4 IN X CBF 1 SELECT 4 FROM * AS X', 4, ['s01', 's02', 's03', 's04']),
    ('REP 1 IN LOC_PLACE CBF 1 SELECT 1 FROM LOC_SW AS LOC_PLACE FILTER Country EQ Sweden AS LOC_SW', 1, ['s03']),
    ("REP 1 CBF 1 SELECT 1 FROM LOC_SPB FILTER 'UN-LOCODE' EQ 'RU LED' AS LOC_SPB", 1, ['s02']),
    ("REP 1 IN LOC_SPB_PLACE REP 1 IN LOC_MSK_PLACE CBF 1 SELECT 1 FROM LOC_SPB AS LOC_SPB_PLACE "
     "SELECT 1 FROM LOC_MSK AS LOC_MSK_PLACE "
     "FILTER 'UN-LOCODE' EQ 'RU LED' AS LOC_SPB FILTER 'UN-LOCODE' EQ 'RU MOW' AS LOC_MSK", 2, ['s01', 's02']),
    ('REP 4 CBF 1 SELECT 4 FROM LOC_EU FILTER Continent EQ Europe AS LOC_EU', 4, ['s01', 's02', 's03', 's04']),
    ("REP 1 CBF 1 SELECT 1 FROM LOC_SPB "
     "FILTER 'UN-LOCODE' NE 'RU MOW' AND 'UN-LOCODE' NE 'SE STO' AND 'UN-LOCODE' NE 'FI HEL' AS LOC_SPB", 1, ['s02']),
    ("REP 2 CBF 1 SELECT 2 FROM LOC_RU FILTER SubDivCode NE 'AB' AND SubDivCode NE '18' AS LOC_RU", 2, ['s01', 's02']),
    ("REP 2 CBF 1 SELECT 2 FROM LOC_RU FILTER Country EQ 'Russia' AS LOC_RU", 2, ['s01', 's02']),
    ("REP 2 CBF 1 SELECT 2 FROM LOC_EU FILTER Country NE 'Russia' AS LOC_EU", 2, ['s03', 's04']),
])
@pytest.mark.node_mgmt
@allure.title('Test object copies and storage nodes based on placement policy')
def test_placement_policy_with_nodes(prepare_wallet_and_deposit, placement_rule, expected_copies, nodes):
    """
    Based on container's placement policy check that storage nodes are piked correctly and object has
    correct copies amount.
    """
    wallet = prepare_wallet_and_deposit
    file_path = generate_file()
    cid, oid, found_nodes = validate_object_copies(wallet, placement_rule, file_path, expected_copies)
    expected_nodes = [NEOFS_NETMAP_DICT[node_name].get('rpc') for node_name in nodes]
    assert set(found_nodes) == set(expected_nodes), f'Expected nodes {expected_nodes}, got {found_nodes}'


@pytest.mark.parametrize('placement_rule,expected_copies', [
    ('REP 2 IN X CBF 2 SELECT 6 FROM * AS X', 2),
])
@pytest.mark.node_mgmt
@allure.title('Negative cases for placement policy')
def test_placement_policy_negative(prepare_wallet_and_deposit, placement_rule, expected_copies):
    """
    Negative test for placement policy.
    """
    wallet = prepare_wallet_and_deposit
    file_path = generate_file()
    with pytest.raises(RuntimeError, match='.*not enough nodes to SELECT from.*'):
        validate_object_copies(wallet, placement_rule, file_path, expected_copies)


@pytest.mark.node_mgmt
@allure.title('NeoFS object replication on node failover')
def test_replication(prepare_wallet_and_deposit, create_remote_connection, start_node_if_needed):
    """
    Test checks object replication on storage not failover and come back.
    """
    wallet = prepare_wallet_and_deposit
    file_path = generate_file()
    expected_nodes_count = 2

    cid = create_container(wallet, basic_acl=PUBLIC_ACL)
    oid = put_object(wallet, file_path, cid)

    nodes = get_nodes_with_object(wallet, cid, oid)
    assert len(nodes) == expected_nodes_count, f'Expected {expected_nodes_count} copies, got {len(nodes)}'

    node_names = [name for name, config in NEOFS_NETMAP_DICT.items() if config.get('rpc') in nodes]
    stopped_nodes = stop_nodes_remote(create_remote_connection, 1, node_names)

    wait_for_expected_object_copies(wallet, cid, oid)

    start_nodes_remote(create_remote_connection, stopped_nodes)
    tick_epoch()

    for node_name in node_names:
        wait_for_node_go_online(create_remote_connection, node_name)

    wait_for_expected_object_copies(wallet, cid, oid)


@pytest.mark.node_mgmt
@allure.title('NeoFS object could be dropped using control command')
def test_drop_object(prepare_wallet_and_deposit, create_remote_connection):
    """
    Test checks object could be dropped using `neofs-cli control drop-objects` command.
    """
    wallet = prepare_wallet_and_deposit
    file_path_simple, file_path_complex = generate_file(), generate_file(COMPLEX_OBJ_SIZE)

    locode = get_locode()
    rule = f"REP 1 CBF 1 SELECT 1 FROM * FILTER 'UN-LOCODE' EQ '{locode}' AS LOC"
    cid = create_container(wallet, rule=rule)
    oid_simple = put_object(wallet, file_path_simple, cid)
    oid_complex = put_object(wallet, file_path_complex, cid)

    for oid in (oid_simple, oid_complex):
        get_object(wallet, cid, oid)
        head_object(wallet, cid, oid)

    nodes = get_nodes_with_object(wallet, cid, oid_simple)
    node_name = choice([name for name, config in NEOFS_NETMAP_DICT.items() if config.get('rpc') in nodes])

    for oid in (oid_simple, oid_complex):
        with allure.step(f'Drop object {oid}'):
            get_object(wallet, cid, oid)
            head_object(wallet, cid, oid)
            drop_object(create_remote_connection, node_name, cid, oid)
            wait_for_obj_dropped(wallet, cid, oid, get_object)
            wait_for_obj_dropped(wallet, cid, oid, head_object)


@pytest.mark.node_mgmt
@pytest.mark.skip(reason='Need to clarify scenario')
@allure.title('Control Operations with storage nodes')
def test_shards(prepare_wallet_and_deposit, create_remote_connection, crate_container_and_pick_node):
    """
    This test checks base control operations with storage nodes (healthcheck, netmap-snapshot, set-status).
    """
    wallet = prepare_wallet_and_deposit
    file_path = generate_file()

    cid, node_name = crate_container_and_pick_node
    original_oid = put_object(wallet, file_path, cid)

    # for mode in ('read-only', 'degraded'):
    for mode in ('degraded',):
        shards = node_shard_list(create_remote_connection, node_name)
        assert shards

        for shard in shards:
            node_shard_set_mode(create_remote_connection, node_name, shard, mode)

        shards = node_shard_list(create_remote_connection, node_name)
        assert shards

        with pytest.raises(RuntimeError):
            put_object(wallet, file_path, cid)

        with pytest.raises(RuntimeError):
            delete_object(wallet, cid, original_oid)

        # head_object(wallet, cid, original_oid)
        get_object(wallet, cid, original_oid)

        for shard in shards:
            node_shard_set_mode(create_remote_connection, node_name, shard, 'read-write')

        shards = node_shard_list(create_remote_connection, node_name)
        assert shards

        oid = put_object(wallet, file_path, cid)
        delete_object(wallet, cid, oid)


@allure.step('Validate object has {expected_copies} copies')
def validate_object_copies(wallet: str, placement_rule: str, file_path: str, expected_copies: int):
    cid = create_container(wallet, rule=placement_rule, basic_acl=PUBLIC_ACL)
    got_policy = placement_policy_from_container(get_container(wallet, cid, flag=''))
    assert got_policy == placement_rule.replace('\'', ''), \
        f'Expected \n{placement_rule} and got policy \n{got_policy} are the same'
    oid = put_object(wallet, file_path, cid)
    nodes = get_nodes_with_object(wallet, cid, oid)
    assert len(nodes) == expected_copies, f'Expected {expected_copies} copies, got {len(nodes)}'
    return cid, oid, nodes


@allure.step('Wait for node {node_name} goes online')
def wait_for_node_go_online(create_remote_connection, node_name: str):
    timeout, attempts = 5, 20
    for _ in range(attempts):
        try:
            health_check = node_healthcheck(create_remote_connection, node_name)
            assert health_check.health_status == 'READY' and health_check.network_status == 'ONLINE'
            return
        except Exception as err:
            logger.warning(f'Node {node_name} is not online:\n{err}')
            sleep(timeout)
            continue
    raise AssertionError(f'Node {node_name} does not go online during timeout {timeout * attempts}')


@allure.step('Wait for {expected_copies} object copies in the wallet')
def wait_for_expected_object_copies(wallet: str, cid: str, oid: str, expected_copies: int = 2):
    for i in range(2):
        copies = get_simple_object_copies(wallet, cid, oid)
        if copies == expected_copies:
            break
        tick_epoch()
        sleep(robot_time_to_int(NEOFS_CONTRACT_CACHE_TIMEOUT))
    else:
        raise AssertionError(f'There are no {expected_copies} copies during time')


@allure.step('Wait for object to be dropped')
def wait_for_obj_dropped(wallet: str, cid: str, oid: str, checker):
    for _ in range(3):
        try:
            checker(wallet, cid, oid)
            sleep(robot_time_to_int(SHARD_0_GC_SLEEP))
        except Exception as err:
            if 'object not found' in str(err):
                break
    else:
        raise AssertionError(f'Object {oid} is not dropped from node')