# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

import contextlib
import docker
import jsonpickle
import logging
import os
import pwd
import socket
import subprocess
import sys
import time
import yaml
import shlex

DORIS_PREFIX = "doris-"

LOG = None

ENALBE_LOG_STDOUT = True


class Timer(object):

    def __init__(self):
        self.start = time.time()
        self.canceled = False

    def show(self):
        if not self.canceled:
            LOG.info("=== Total run time: {} s".format(
                int(time.time() - self.start)))

    def cancel(self):
        self.canceled = True


def is_log_stdout():
    return ENALBE_LOG_STDOUT


def set_log_verbose():
    get_logger().setLevel(logging.DEBUG)


def set_log_to(log_file_name, is_to_stdout):
    logger = get_logger()
    for ch in logger.handlers:
        logger.removeHandler(ch)
    if log_file_name:
        os.makedirs(os.path.dirname(log_file_name), exist_ok=True)
        logger.addHandler(logging.FileHandler(log_file_name))
    global ENALBE_LOG_STDOUT
    ENALBE_LOG_STDOUT = is_to_stdout
    if is_to_stdout:
        logger.addHandler(logging.StreamHandler(sys.stdout))
    for ch in logger.handlers:
        formatter = logging.Formatter(
            '%(asctime)s - %(filename)s - %(lineno)dL - %(levelname)s - %(message)s'
        )
        ch.setLevel(logging.DEBUG)
        ch.setFormatter(formatter)


def get_logger(name="doris-compose"):
    global LOG
    if LOG is None:
        LOG = logging.getLogger(name)
        LOG.setLevel(logging.INFO)
        set_log_to(None, True)

    return LOG


get_logger()


def render_red(s):
    return "\x1B[31m" + str(s) + "\x1B[0m"


def render_green(s):
    return "\x1B[32m" + str(s) + "\x1B[0m"


def render_yellow(s):
    return "\x1B[33m" + str(s) + "\x1B[0m"


def render_blue(s):
    return "\x1B[34m" + str(s) + "\x1B[0m"


def with_doris_prefix(name):
    return DORIS_PREFIX + name


def parse_service_name(service_name):
    import cluster
    if not service_name or not service_name.startswith(DORIS_PREFIX):
        return None, None, None
    pos2 = service_name.rfind("-")
    if pos2 < 0:
        return None, None, None
    id = None
    try:
        id = int(service_name[pos2 + 1:])
    except:
        return None, None, None
    pos1 = service_name.rfind("-", len(DORIS_PREFIX), pos2 - 1)
    if pos1 < 0:
        return None, None, None
    node_type = service_name[pos1 + 1:pos2]
    if node_type not in cluster.Node.TYPE_ALL:
        return None, None, None
    return service_name[len(DORIS_PREFIX):pos1], node_type, id


def get_map_ports(container):
    return {
        int(innner.replace("/tcp", "")): int(outer[0]["HostPort"])
        for innner, outer in container.attrs.get("NetworkSettings", {}).get(
            "Ports", {}).items()
    }


def is_container_running(container):
    return container.status == "running"


# return all doris containers when cluster_names is empty
def get_doris_containers(cluster_names):
    if cluster_names:
        if type(cluster_names) == type(""):
            filter_names = "{}{}-*".format(DORIS_PREFIX, cluster_names)
        else:
            filter_names = "|".join([
                "{}{}-*".format(DORIS_PREFIX, name) for name in cluster_names
            ])
    else:
        filter_names = "{}*".format(DORIS_PREFIX)

    clusters = {}
    client = docker.client.from_env()
    containers = client.containers.list(filters={"name": filter_names})
    for container in containers:
        cluster_name, _, _ = parse_service_name(container.name)
        if not cluster_name:
            continue
        if cluster_names and cluster_name not in cluster_names:
            continue
        if cluster_name not in clusters:
            clusters[cluster_name] = []
        clusters[cluster_name].append(container)
    return clusters


def get_doris_running_containers(cluster_name):
    return {
        container.name: container
        for container in get_doris_containers(cluster_name).get(
            cluster_name, []) if is_container_running(container)
    }


def get_network_name(cluster_name):
    return cluster_name + "_" + with_doris_prefix(cluster_name)


def remove_docker_network(cluster_name):
    client = docker.client.from_env()
    for network in client.networks.list(
            names=[get_network_name(cluster_name)]):
        network.remove()


def is_dir_empty(dir):
    return False if os.listdir(dir) else True


def exec_shell_command(command, ignore_errors=False, output_real_time=False):
    LOG.info("Exec command: {}".format(command))
    p = subprocess.Popen(command,
                         shell=True,
                         stdout=subprocess.PIPE,
                         stderr=subprocess.STDOUT)
    out = ''
    exitcode = None
    if output_real_time:
        while p.poll() is None:
            s = p.stdout.readline().decode('utf-8')
            if s.rstrip():
                for line in s.strip().splitlines():
                    LOG.info("(docker) " + line)
            out += s
        exitcode = p.wait()
    else:
        out = p.communicate()[0].decode('utf-8')
        exitcode = p.returncode
        if out:
            for line in out.splitlines():
                LOG.info("(docker) " + line)
    if not ignore_errors:
        assert exitcode == 0, out
    return exitcode, out


def detect_docker_compose_cmd():
    """
    Return compose command prefix as a list.

    Priority:
    1. DORIS_DOCKER_COMPOSE_CMD env override
       e.g. "docker compose" or "docker-compose" or "/path/to/docker-compose"
    2. docker compose v2
    3. docker-compose v1 / wrapper
    """
    def _command_available(cmd):
        try:
            subprocess.run(
                cmd,
                stdout=subprocess.DEVNULL,
                stderr=subprocess.DEVNULL,
                check=True,
            )
            return True
        except (subprocess.CalledProcessError, FileNotFoundError):
            return False

    override = os.environ.get("DORIS_DOCKER_COMPOSE_CMD")
    if override:
        cmd = shlex.split(override)
        if not _command_available(cmd + ["version"]):
            raise RuntimeError(
                "DORIS_DOCKER_COMPOSE_CMD is set but not usable: {}".format(override)
            )
        return cmd

    # Prefer Compose v2.
    if _command_available(["docker", "compose", "version"]):
        return ["docker", "compose"]

    # Fallback for old machines.
    if _command_available(["docker-compose", "version"]):
        return ["docker-compose"]

    raise RuntimeError(
        "Neither 'docker compose' nor 'docker-compose' is available. "
        "Please install Docker Compose v2 plugin or legacy docker-compose."
    )


def exec_docker_compose_command(compose_file,
                                command,
                                options=None,
                                nodes=None,
                                user_command=None,
                                output_real_time=False):
    if nodes != None and not nodes:
        return 0, "Skip"

    docker_compose_cmd = detect_docker_compose_cmd()
    compose_cmd = "{} -f {}  {}  {} {}".format(
        " ".join(docker_compose_cmd), compose_file, command, " ".join(options) if options else "",
        " ".join([node.service_name() for node in nodes]) if nodes else "",
        user_command if user_command else "")

    return exec_shell_command(compose_cmd, output_real_time=output_real_time)


def get_docker_subnets_prefix16():
    subnet_prefixes = {}
    client = docker.from_env()
    for network in client.networks.list():
        if not network.attrs:
            continue
        ipam = network.attrs.get("IPAM", None)
        if not ipam:
            continue
        configs = ipam.get("Config", None)
        if not configs:
            continue
        for config in configs:
            subnet = config.get("Subnet", None)
            if not subnet:
                continue
            pos1 = subnet.find(".")
            if pos1 <= 0:
                continue
            pos2 = subnet.find(".", pos1 + 1)
            if pos2 <= 0:
                continue
            num1 = subnet[0:pos1]
            num2 = subnet[pos1 + 1:pos2]
            network_part_len = 16
            pos = subnet.find("/")
            if pos != -1:
                network_part_len = int(subnet[pos + 1:])
            if network_part_len < 16:
                for i in range(256):
                    subnet_prefixes["{}.{}".format(num1, i)] = True
            else:
                subnet_prefixes["{}.{}".format(num1, num2)] = True

    LOG.debug("Get docker subnet prefixes: {}".format(subnet_prefixes))

    return subnet_prefixes


def copy_image_directory(image, image_dir, local_dir):
    client = docker.from_env()
    volumes = ["{}:/opt/mount".format(local_dir)]
    if image_dir.endswith("/"):
        image_dir += "."
    elif not image_dir.endswith("."):
        image_dir += "/."
    client.containers.run(
        image,
        remove=True,
        volumes=volumes,
        entrypoint="cp -r  {}  /opt/mount/".format(image_dir))


def get_avail_port():
    with contextlib.closing(socket.socket(socket.AF_INET,
                                          socket.SOCK_STREAM)) as sock:
        sock.bind(("", 0))
        _, port = sock.getsockname()
        return port


def is_socket_avail(ip, port):
    with contextlib.closing(socket.socket(socket.AF_INET,
                                          socket.SOCK_STREAM)) as sock:
        return sock.connect_ex((ip, port)) == 0


def get_local_ip():
    with contextlib.closing(socket.socket(socket.AF_INET,
                                          socket.SOCK_DGRAM)) as sock:
        sock.settimeout(0)
        # the ip no need reachable.
        # sometime connect to the external network '10.255.255.255' throw exception 'Permissions denied',
        # then change to connect to the local network '192.168.0.255'
        for ip in (('10.255.255.255'), ('192.168.0.255')):
            try:
                sock.connect((ip, 1))
                return sock.getsockname()[0]
            except Exception as e:
                LOG.info(f"get local ip connect {ip} failed: {e}")
        return '127.0.0.1'


def enable_dir_with_rw_perm(dir):
    if not os.path.exists(dir):
        return
    client = docker.client.from_env()
    client.containers.run("ubuntu",
                          remove=True,
                          volumes=["{}:/opt/mount".format(dir)],
                          entrypoint="chmod a+rw -R {}".format("/opt/mount"))


def get_path_owner(path):
    try:
        return pwd.getpwuid(os.stat(path).st_uid).pw_name
    except:
        return ""


def get_path_uid(path):
    try:
        return os.stat(path).st_uid
    except:
        return ""


def read_compose_file(file):
    with open(file, "r") as f:
        return yaml.safe_load(f.read())


def write_compose_file(file, compose):
    with open(file, "w") as f:
        f.write(yaml.dump(compose))


def pretty_json(json_data):
    return jsonpickle.dumps(json_data, indent=4)


def is_true(val):
    return str(val) == "true" or str(val) == "1"


def escape_null(val):
    return "" if val == "\\N" else val