import logging
import random
from time import sleep
from typing import Optional, Tuple

import allure
import pytest
from frostfs_testlib.resources.common import MORPH_BLOCK_TIME
from frostfs_testlib.resources.error_patterns import OBJECT_NOT_FOUND
from frostfs_testlib.resources.wellknown_acl import PUBLIC_ACL
from frostfs_testlib.steps.cli.container import create_container
from frostfs_testlib.steps.cli.object import (
    delete_object,
    get_object,
    get_object_from_random_node,
    head_object,
    put_object,
    put_object_to_random_node,
)
from frostfs_testlib.steps.node_management import (
    check_node_in_map,
    delete_node_data,
    drop_object,
    exclude_node_from_network_map,
    get_locode_from_random_node,
    include_node_to_network_map,
    node_shard_list,
    node_shard_set_mode,
    storage_node_set_status,
    wait_for_node_to_be_ready,
)
from frostfs_testlib.steps.storage_policy import get_nodes_with_object
from frostfs_testlib.storage.cluster import StorageNode
from frostfs_testlib.storage.dataclasses.object_size import ObjectSize
from frostfs_testlib.testing.cluster_test_base import ClusterTestBase
from frostfs_testlib.utils import datetime_utils, string_utils
from frostfs_testlib.utils.failover_utils import wait_object_replication
from frostfs_testlib.utils.file_utils import generate_file

from pytest_tests.helpers.utility import wait_for_gc_pass_on_storage_nodes

logger = logging.getLogger("NeoLogger")
check_nodes: list[StorageNode] = []


@allure.title("Add one node to cluster")
@pytest.mark.add_nodes
@pytest.mark.node_mgmt
class TestNodeManagement(ClusterTestBase):
    @pytest.fixture
    @allure.title("Create container and pick the node with data")
    def create_container_and_pick_node(
        self, default_wallet: str, simple_object_size: ObjectSize
    ) -> Tuple[str, StorageNode]:
        file_path = generate_file(simple_object_size.value)
        placement_rule = "REP 1 IN X CBF 1 SELECT 1 FROM * AS X"
        endpoint = self.cluster.default_rpc_endpoint

        cid = create_container(
            default_wallet,
            shell=self.shell,
            endpoint=endpoint,
            rule=placement_rule,
            basic_acl=PUBLIC_ACL,
        )
        oid = put_object_to_random_node(default_wallet, file_path, cid, self.shell, self.cluster)

        nodes = get_nodes_with_object(cid, oid, shell=self.shell, nodes=self.cluster.storage_nodes)
        assert len(nodes) == 1
        node = nodes[0]

        yield cid, node

        shards = node_shard_list(node)
        assert shards

        for shard in shards:
            node_shard_set_mode(node, shard, "read-write")

        node_shard_list(node)

    @allure.step("Tick epoch with retries")
    def tick_epoch_with_retries(self, attempts: int = 3, timeout: int = 3, wait_block: int = None):
        for attempt in range(attempts):
            try:
                self.tick_epoch(wait_block=wait_block)
            except RuntimeError:
                sleep(timeout)
                if attempt >= attempts - 1:
                    raise
                continue
            return

    @pytest.fixture
    def after_run_start_all_nodes(self):
        yield
        self.return_nodes()

    @pytest.fixture
    def return_nodes_after_test_run(self):
        yield
        self.return_nodes()

    @allure.step("Return node to cluster")
    def return_nodes(self, alive_node: Optional[StorageNode] = None) -> None:
        for node in list(check_nodes):
            with allure.step(f"Start node {node}"):
                node.start_service()
            with allure.step(f"Waiting status ready for node {node}"):
                wait_for_node_to_be_ready(node)

            # We need to wait for node to establish notifications from morph-chain
            # Otherwise it will hang up when we will try to set status
            sleep(datetime_utils.parse_time(MORPH_BLOCK_TIME))

            with allure.step(f"Move node {node} to online state"):
                storage_node_set_status(node, status="online", retries=2)

            check_nodes.remove(node)
            sleep(datetime_utils.parse_time(MORPH_BLOCK_TIME))
            self.tick_epoch_with_retries(3, wait_block=2)
            check_node_in_map(node, shell=self.shell, alive_node=alive_node)

    @allure.title("Add one node to cluster")
    @pytest.mark.add_nodes
    def test_add_nodes(
        self,
        default_wallet: str,
        simple_object_size: ObjectSize,
        return_nodes_after_test_run,
    ):
        """
        This test remove one node from frostfs_testlib.storage.cluster then add it back. Test uses base control operations with storage nodes (healthcheck, netmap-snapshot, set-status).
        """
        wallet = default_wallet
        placement_rule_3 = "REP 3 IN X CBF 1 SELECT 3 FROM * AS X"
        placement_rule_4 = "REP 4 IN X CBF 1 SELECT 4 FROM * AS X"
        source_file_path = generate_file(simple_object_size.value)

        storage_nodes = self.cluster.storage_nodes
        random_node = random.choice(storage_nodes[1:])
        alive_node = random.choice(
            [storage_node for storage_node in storage_nodes if storage_node.id != random_node.id]
        )

        check_node_in_map(random_node, shell=self.shell, alive_node=alive_node)

        # Add node to recovery list before messing with it
        check_nodes.append(random_node)
        exclude_node_from_network_map(random_node, alive_node, shell=self.shell, cluster=self.cluster)
        delete_node_data(random_node)

        cid = create_container(
            wallet,
            rule=placement_rule_3,
            basic_acl=PUBLIC_ACL,
            shell=self.shell,
            endpoint=alive_node.get_rpc_endpoint(),
        )
        oid = put_object(
            wallet,
            source_file_path,
            cid,
            shell=self.shell,
            endpoint=alive_node.get_rpc_endpoint(),
        )
        wait_object_replication(cid, oid, 3, shell=self.shell, nodes=storage_nodes)

        self.return_nodes(alive_node)

        with allure.step("Check data could be replicated to new node"):
            random_node = random.choice(list(set(storage_nodes) - {random_node, alive_node}))
            # Add node to recovery list before messing with it
            check_nodes.append(random_node)
            exclude_node_from_network_map(random_node, alive_node, shell=self.shell, cluster=self.cluster)

            wait_object_replication(
                cid,
                oid,
                3,
                shell=self.shell,
                nodes=list(set(storage_nodes) - {random_node}),
            )
            include_node_to_network_map(random_node, alive_node, shell=self.shell, cluster=self.cluster)
            wait_object_replication(cid, oid, 3, shell=self.shell, nodes=storage_nodes)

        with allure.step("Check container could be created with new node"):
            cid = create_container(
                wallet,
                rule=placement_rule_4,
                basic_acl=PUBLIC_ACL,
                shell=self.shell,
                endpoint=alive_node.get_rpc_endpoint(),
            )
            oid = put_object(
                wallet,
                source_file_path,
                cid,
                shell=self.shell,
                endpoint=alive_node.get_rpc_endpoint(),
            )
            wait_object_replication(cid, oid, 4, shell=self.shell, nodes=storage_nodes)

    @pytest.mark.node_mgmt
    @allure.title("Drop object using control command")
    def test_drop_object(self, default_wallet, complex_object_size: ObjectSize, simple_object_size: ObjectSize):
        """
        Test checks object could be dropped using `frostfs-cli control drop-objects` command.
        """
        wallet = default_wallet
        endpoint = self.cluster.default_rpc_endpoint
        file_path_simple = generate_file(simple_object_size.value)
        file_path_complex = generate_file(complex_object_size.value)

        locode = get_locode_from_random_node(self.cluster)
        rule = f"REP 1 IN SE CBF 1 SELECT 1 FROM LOC AS SE FILTER 'UN-LOCODE' EQ '{locode}' AS LOC"
        cid = create_container(wallet, rule=rule, shell=self.shell, endpoint=endpoint)
        oid_simple = put_object_to_random_node(wallet, file_path_simple, cid, shell=self.shell, cluster=self.cluster)
        oid_complex = put_object_to_random_node(wallet, file_path_complex, cid, shell=self.shell, cluster=self.cluster)

        for oid in (oid_simple, oid_complex):
            get_object_from_random_node(wallet, cid, oid, shell=self.shell, cluster=self.cluster)
            head_object(wallet, cid, oid, shell=self.shell, endpoint=endpoint)

        nodes_with_object = get_nodes_with_object(cid, oid_simple, shell=self.shell, nodes=self.cluster.storage_nodes)
        random_node = random.choice(nodes_with_object)

        for oid in (oid_simple, oid_complex):
            with allure.step(f"Drop object {oid}"):
                get_object_from_random_node(wallet, cid, oid, shell=self.shell, cluster=self.cluster)
                head_object(wallet, cid, oid, shell=self.shell, endpoint=endpoint)
                drop_object(random_node, cid, oid)
                self.wait_for_obj_dropped(wallet, cid, oid, endpoint, get_object)
                self.wait_for_obj_dropped(wallet, cid, oid, endpoint, head_object)

    @pytest.mark.node_mgmt
    @pytest.mark.skip(reason="Need to clarify scenario")
    @allure.title("Control Operations with storage nodes")
    def test_shards(
        self,
        default_wallet,
        create_container_and_pick_node,
        simple_object_size: ObjectSize,
    ):
        wallet = default_wallet
        file_path = generate_file(simple_object_size.value)

        cid, node = create_container_and_pick_node
        original_oid = put_object_to_random_node(wallet, file_path, cid, self.shell, self.cluster)

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

            for shard in shards:
                node_shard_set_mode(node, shard, mode)

            shards = node_shard_list(node)
            assert shards

            with pytest.raises(RuntimeError):
                put_object_to_random_node(wallet, file_path, cid, self.shell, self.cluster)

            with pytest.raises(RuntimeError):
                delete_object(wallet, cid, original_oid, self.shell, self.cluster.default_rpc_endpoint)

            get_object_from_random_node(wallet, cid, original_oid, self.shell, self.cluster)

            for shard in shards:
                node_shard_set_mode(node, shard, "read-write")

            shards = node_shard_list(node)
            assert shards

            oid = put_object_to_random_node(wallet, file_path, cid, self.shell, self.cluster)
            delete_object(wallet, cid, oid, self.shell, self.cluster.default_rpc_endpoint)

    @pytest.mark.node_mgmt
    @allure.title("Put object with stopped node")
    def test_stop_node(self, default_wallet, return_nodes_after_test_run, simple_object_size: ObjectSize):
        wallet = default_wallet
        placement_rule = "REP 3 IN X SELECT 4 FROM * AS X"
        source_file_path = generate_file(simple_object_size.value)
        storage_nodes = self.cluster.storage_nodes
        random_node = random.choice(storage_nodes[1:])
        alive_node = random.choice(
            [storage_node for storage_node in storage_nodes if storage_node.id != random_node.id]
        )

        cid = create_container(
            wallet,
            rule=placement_rule,
            basic_acl=PUBLIC_ACL,
            shell=self.shell,
            endpoint=random_node.get_rpc_endpoint(),
        )
        with allure.step("Stop the random node"):
            check_nodes.append(random_node)
            random_node.stop_service()
        with allure.step("Try to put an object and expect success"):
            put_object(
                wallet,
                source_file_path,
                cid,
                shell=self.shell,
                endpoint=alive_node.get_rpc_endpoint(),
            )
        self.return_nodes(alive_node)

    @allure.step("Wait for object to be dropped")
    def wait_for_obj_dropped(self, wallet: str, cid: str, oid: str, endpoint: str, checker) -> None:
        for _ in range(3):
            try:
                checker(wallet, cid, oid, shell=self.shell, endpoint=endpoint)
                wait_for_gc_pass_on_storage_nodes()
            except Exception as err:
                if string_utils.is_str_match_pattern(err, OBJECT_NOT_FOUND):
                    return
                raise AssertionError(f'Expected "{OBJECT_NOT_FOUND}" error, got\n{err}')

        raise AssertionError(f"Object {oid} was not dropped from node")