import os
import sys

from pcs import utils
from pcs.cli.common.errors import CmdLineInputError
from pcs.cli.reports import process_library_reports
from pcs.lib.errors import LibraryError
from pcs.lib.node import get_existing_nodes_names
from pcs.lib.pacemaker.live import get_cluster_status_dom
from pcs.lib.pacemaker.state import ClusterState
from pcs.pcsd import pcsd_status_cmd

# pylint: disable=too-many-branches, too-many-locals, too-many-statements


def full_status(lib, argv, modifiers):
    """
    Options:
      * --hide-inactive - hide inactive resources
      * --full - show full details, node attributes and failcount
      * -f - CIB file, crm_mon accepts CIB_file environment variable
      * --corosync_conf - file corocync.conf
      * --request-timeout - HTTP timeout for node authorization check
    """
    modifiers.ensure_only_supported(
        "--hide-inactive",
        "--full",
        "-f",
        "--corosync_conf",
        "--request-timeout",
    )
    if argv:
        raise CmdLineInputError()
    print(
        lib.status.full_cluster_status_plaintext(
            hide_inactive_resources=modifiers.get("--hide-inactive"),
            verbose=modifiers.get("--full"),
        )
    )


# Parse crm_mon for status
def nodes_status(lib, argv, modifiers):
    """
    Options:
      * -f - CIB file - for config subcommand and not for both or corosync
      * --corosync_conf - only for config subcommand

    NOTE: modifiers check is in subcommand
    """
    del lib
    if len(argv) == 1 and (argv[0] == "config"):
        modifiers.ensure_only_supported("-f", "--corosync_conf")
        if utils.hasCorosyncConf():
            corosync_nodes, report_list = get_existing_nodes_names(
                utils.get_corosync_conf_facade()
            )
            if report_list:
                process_library_reports(report_list)
        else:
            corosync_nodes = []
        try:
            pacemaker_nodes = sorted(
                [
                    node.attrs.name
                    for node in ClusterState(
                        get_cluster_status_dom(utils.cmd_runner())
                    ).node_section.nodes
                    if node.attrs.type != "remote"
                ]
            )
        except LibraryError as e:
            process_library_reports(e.args)
        print("Corosync Nodes:")
        if corosync_nodes:
            print(" " + " ".join(corosync_nodes))
        print("Pacemaker Nodes:")
        if pacemaker_nodes:
            print(" " + " ".join(pacemaker_nodes))

        return

    if len(argv) == 1 and (argv[0] == "corosync" or argv[0] == "both"):
        modifiers.ensure_only_supported()
        all_nodes, report_list = get_existing_nodes_names(
            utils.get_corosync_conf_facade()
        )
        if report_list:
            process_library_reports(report_list)
        online_nodes = utils.getCorosyncActiveNodes()
        offline_nodes = []
        for node in all_nodes:
            if node not in online_nodes:
                offline_nodes.append(node)

        online_nodes.sort()
        offline_nodes.sort()
        print("Corosync Nodes:")
        print(" ".join([" Online:"] + online_nodes))
        print(" ".join([" Offline:"] + offline_nodes))
        if argv[0] != "both":
            sys.exit(0)

    modifiers.ensure_only_supported("-f")
    info_dom = utils.getClusterState()

    nodes = info_dom.getElementsByTagName("nodes")
    if nodes.length == 0:
        utils.err("No nodes section found")

    onlinenodes = []
    offlinenodes = []
    standbynodes = []
    standbynodes_with_resources = []
    maintenancenodes = []
    remote_onlinenodes = []
    remote_offlinenodes = []
    remote_standbynodes = []
    remote_standbynodes_with_resources = []
    remote_maintenancenodes = []
    for node in nodes[0].getElementsByTagName("node"):
        node_name = node.getAttribute("name")
        node_remote = node.getAttribute("type") == "remote"
        if node.getAttribute("online") == "true":
            if node.getAttribute("standby") == "true":
                is_running_resources = (
                    node.getAttribute("resources_running") != "0"
                )
                if node_remote:
                    if is_running_resources:
                        remote_standbynodes_with_resources.append(node_name)
                    else:
                        remote_standbynodes.append(node_name)
                else:
                    if is_running_resources:
                        standbynodes_with_resources.append(node_name)
                    else:
                        standbynodes.append(node_name)
            if node.getAttribute("maintenance") == "true":
                if node_remote:
                    remote_maintenancenodes.append(node_name)
                else:
                    maintenancenodes.append(node_name)
            if (
                node.getAttribute("standby") == "false"
                and node.getAttribute("maintenance") == "false"
            ):
                if node_remote:
                    remote_onlinenodes.append(node_name)
                else:
                    onlinenodes.append(node_name)
        else:
            if node_remote:
                remote_offlinenodes.append(node_name)
            else:
                offlinenodes.append(node_name)

    print("Pacemaker Nodes:")
    print(" ".join([" Online:"] + onlinenodes))
    print(" ".join([" Standby:"] + standbynodes))
    print(
        " ".join(
            [" Standby with resource(s) running:"] + standbynodes_with_resources
        )
    )
    print(" ".join([" Maintenance:"] + maintenancenodes))
    print(" ".join([" Offline:"] + offlinenodes))

    print("Pacemaker Remote Nodes:")
    print(" ".join([" Online:"] + remote_onlinenodes))
    print(" ".join([" Standby:"] + remote_standbynodes))
    print(
        " ".join(
            [" Standby with resource(s) running:"]
            + remote_standbynodes_with_resources
        )
    )
    print(" ".join([" Maintenance:"] + remote_maintenancenodes))
    print(" ".join([" Offline:"] + remote_offlinenodes))


def cluster_status(lib, argv, modifiers):
    """
    Options:
      * -f - CIB file
      * --request-timeout - HTTP timeout for checking status of pcsd, no effect
        if -f is specified
    """
    modifiers.ensure_only_supported("-f", "--request-timeout")
    if argv:
        raise CmdLineInputError()
    (output, retval) = utils.run(["crm_mon", "-1", "-r"])

    if retval != 0:
        utils.err("cluster is not currently running on this node")

    first_empty_line = False
    print("Cluster Status:")
    for line in output.splitlines():
        if line == "":
            if first_empty_line:
                break
            first_empty_line = True
            continue
        print("", line)

    if not modifiers.is_specified("-f") and utils.hasCorosyncConf():
        print()
        print_pcsd_daemon_status(lib, modifiers)


def corosync_status(lib, argv, modifiers):
    """
    Options: no options
    """
    del lib
    modifiers.ensure_only_supported()
    if argv:
        raise CmdLineInputError()
    (output, retval) = utils.run(["corosync-quorumtool", "-l"])
    if retval != 0:
        utils.err("corosync not running")
    else:
        print(output.rstrip())


def xml_status(lib, argv, modifiers):
    """
    Options:
      * -f - CIB file
    """
    del lib
    modifiers.ensure_only_supported("-f")
    if argv:
        raise CmdLineInputError()
    (output, retval) = utils.run(
        ["crm_mon", "-1", "-r", "-X"], ignore_stderr=True
    )

    if retval != 0:
        utils.err("running crm_mon, is pacemaker running?")
    print(output.rstrip())


def print_pcsd_daemon_status(lib, modifiers):
    """
    Commandline options:
      * --request-timeout - HTTP timeout for node authorization check or when
        not running under root to call local pcsd
    """
    print("PCSD Status:")
    if os.getuid() == 0:
        pcsd_status_cmd(
            lib, [], modifiers.get_subset("--request-timeout"), dont_exit=True
        )
    else:
        err_msgs, exitcode, std_out, dummy_std_err = utils.call_local_pcsd(
            ["status", "pcsd"], []
        )
        if err_msgs:
            for msg in err_msgs:
                print(msg)
        if exitcode == 0:
            print(std_out)
        else:
            print("Unable to get PCSD status")
