#!/usr/bin/env python3


# jp: a SAT command line tool
# Copyright (C) 2009-2020 Jérôme Poisson (goffi@goffi.org)

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from . import base
from sat.core.i18n import _
from sat.tools.common.ansi import ANSI as A
from sat.tools.common import date_utils, data_format
from sat_frontends.jp.constants import Const as C
from sat_frontends.jp import common

__commands__ = ["Info"]


class Disco(base.CommandBase):

    def __init__(self, host):
        extra_outputs = {'default': self.default_output}
        super(Disco, self).__init__(
            host, 'disco', use_output='complex', extra_outputs=extra_outputs,
            help=_('service discovery'))

    def add_parser_options(self):
        self.parser.add_argument("jid", help=_("entity to discover"))
        self.parser.add_argument(
            "-t", "--type", type=str, choices=('infos', 'items', 'both'), default='both',
            help=_("type of data to discover"))
        self.parser.add_argument("-n", "--node", default='', help=_("node to use"))
        self.parser.add_argument(
            "-C", "--no-cache", dest='use_cache', action="store_false",
            help=_("ignore cache"))

    def default_output(self, data):
        features = data.get('features', [])
        identities = data.get('identities', [])
        extensions = data.get('extensions', {})
        items = data.get('items', [])

        identities_table = common.Table(self.host,
                                        identities,
                                        headers=(_('category'),
                                                 _('type'),
                                                 _('name')),
                                        use_buffer=True)

        extensions_tpl = []
        extensions_types = list(extensions.keys())
        extensions_types.sort()
        for type_ in extensions_types:
            fields = []
            for field in extensions[type_]:
                field_lines = []
                data, values = field
                data_keys = list(data.keys())
                data_keys.sort()
                for key in data_keys:
                    field_lines.append(A.color('\t', C.A_SUBHEADER, key, A.RESET, ': ',
                                               data[key]))
                if len(values) == 1:
                    field_lines.append(A.color('\t', C.A_SUBHEADER, "value", A.RESET,
                                               ': ', values[0] or (A.BOLD + "UNSET")))
                elif len(values) > 1:
                    field_lines.append(A.color('\t', C.A_SUBHEADER, "values", A.RESET,
                                               ': '))

                    for value in values:
                        field_lines.append(A.color('\t  - ', A.BOLD, value))
                fields.append('\n'.join(field_lines))
            extensions_tpl.append('{type_}\n{fields}'.format(
                type_=type_,
                fields='\n\n'.join(fields)))

        items_table = common.Table(
            self.host,
            items,
            headers=(
                _('entity'),
                _('node'),
                _('name')),
            use_buffer=True)

        template = []
        if features:
            template.append(A.color(C.A_HEADER, _("Features")) + "\n\n{features}")
        if identities:
            template.append(A.color(C.A_HEADER, _("Identities")) + "\n\n{identities}")
        if extensions:
            template.append(A.color(C.A_HEADER, _("Extensions")) + "\n\n{extensions}")
        if items:
            template.append(A.color(C.A_HEADER, _("Items")) + "\n\n{items}")

        print("\n\n".join(template).format(
            features = '\n'.join(features),
            identities = identities_table.display().string,
            extensions = '\n'.join(extensions_tpl),
            items = items_table.display().string,
            ))

    async def start(self):
        infos_requested = self.args.type in ('infos', 'both')
        items_requested = self.args.type in ('items', 'both')
        jids = await self.host.check_jids([self.args.jid])
        jid = jids[0]

        # infos
        if not infos_requested:
            infos = None
        else:
            try:
                infos = await self.host.bridge.discoInfos(
                    jid,
                    node=self.args.node,
                    use_cache=self.args.use_cache,
                    profile_key=self.host.profile
                )
            except Exception as e:
                self.disp(_(f"error while doing discovery: {e}"), error=True)
                self.host.quit(C.EXIT_BRIDGE_ERRBACK)

        # items
        if not items_requested:
            items = None
        else:
            try:
                items = await self.host.bridge.discoItems(
                    jid,
                    node=self.args.node,
                    use_cache=self.args.use_cache,
                    profile_key=self.host.profile
                )
            except Exception as e:
                self.disp(_(f"error while doing discovery: {e}"), error=True)
                self.host.quit(C.EXIT_BRIDGE_ERRBACK)

        # output
        data = {}

        if infos_requested:
            features, identities, extensions = infos
            features.sort()
            identities.sort(key=lambda identity: identity[2])
            data.update({
                'features': features,
                'identities': identities,
                'extensions': extensions})

        if items_requested:
            items.sort(key=lambda item: item[2])
            data['items'] = items

        await self.output(data)
        self.host.quit()

class Version(base.CommandBase):

    def __init__(self, host):
        super(Version, self).__init__(host, 'version', help=_('software version'))

    def add_parser_options(self):
        self.parser.add_argument("jid", type=str, help=_("Entity to request"))

    async def start(self):
        jids = await self.host.check_jids([self.args.jid])
        jid = jids[0]
        try:
            data = await self.host.bridge.getSoftwareVersion(jid, self.host.profile)
        except Exception as e:
            self.disp(_(f"error while trying to get version: {e}"), error=True)
            self.host.quit(C.EXIT_BRIDGE_ERRBACK)
        else:
            infos = []
            name, version, os = data
            if name:
                infos.append(_(f"Software name: {name}"))
            if version:
                infos.append(_(f"Software version: {version}"))
            if os:
                infos.append(_(f"Operating System: {os}"))

            print("\n".join(infos))
            self.host.quit()


class Session(base.CommandBase):

    def __init__(self, host):
        extra_outputs = {'default': self.default_output}
        super(Session, self).__init__(
            host, 'session', use_output='dict', extra_outputs=extra_outputs,
            help=_('running session'))

    def add_parser_options(self):
        pass

    async def default_output(self, data):
        started = data['started']
        data['started'] = '{short} (UTC, {relative})'.format(
            short=date_utils.date_fmt(started),
            relative=date_utils.date_fmt(started, 'relative'))
        await self.host.output(C.OUTPUT_DICT, 'simple', {}, data)

    async def start(self):
        try:
            data = await self.host.bridge.sessionInfosGet(self.host.profile)
        except Exception as e:
            self.disp(_(f'Error getting session infos: {e}'), error=True)
            self.host.quit(C.EXIT_BRIDGE_ERRBACK)
        else:
            await self.output(data)
            self.host.quit()


class Devices(base.CommandBase):

    def __init__(self, host):
        super(Devices, self).__init__(
            host, 'devices', use_output=C.OUTPUT_LIST_DICT,
            help=_('devices of an entity'))

    def add_parser_options(self):
        self.parser.add_argument(
            "jid", type=str, nargs='?', default='', help=_("Entity to request"))

    async def start(self):
        try:
            data = await self.host.bridge.devicesInfosGet(
                self.args.jid, self.host.profile)
        except Exception as e:
            self.disp(_(f'Error getting devices infos: {e}'), error=True)
            self.host.quit(C.EXIT_BRIDGE_ERRBACK)
        else:
            data = data_format.deserialise(data, type_check=list)
            await self.output(data)
            self.host.quit()


class Info(base.CommandBase):
    subcommands = (Disco, Version, Session, Devices)

    def __init__(self, host):
        super(Info, self).__init__(
            host, 'info', use_profile=False,
            help=_('Get various pieces of information on entities'))