# Copyright 2014 Budapest University of Technology and Economics (BME IK)
#
# This file is part of CIRCLE Cloud.
#
# CIRCLE is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# CIRCLE 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 General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along
# with CIRCLE.  If not, see <http://www.gnu.org/licenses/>.

from __future__ import absolute_import

from django.contrib.auth.models import Group, User
from django.utils.translation import ugettext_lazy as _, ugettext
from django.utils.html import mark_safe

from django_tables2 import Table, A
from django_tables2.columns import (
    TemplateColumn, Column, LinkColumn, BooleanColumn
)
from django_sshkey.models import UserKey

from storage.models import Disk
from vm.models import Node, InstanceTemplate, Lease
from dashboard.models import ConnectCommand, Message


class FileSizeColumn(Column):
    def render(self, value):
        from sizefield.utils import filesizeformat

        size = filesizeformat(value)
        return size


class ApplianceColumn(TemplateColumn):
    def render(self, *args, **kwargs):
        value = super(ApplianceColumn, self).render(*args, **kwargs)

        abbr = '<abbr title="%s">%s</abbr>'
        appliance = kwargs['record'].get_appliance()
        if appliance is None:
            return value
        elif isinstance(appliance, InstanceTemplate):
            # Translators: [T] as Template
            title, text = ugettext("Template"), ugettext("[T]")
        else:
            # Translators: [VM] as Virtual Machine
            title, text = ugettext("Virtual machine"), ugettext("[VM]")
        return mark_safe("%s %s" % (abbr % (title, text), value))


class NodeListTable(Table):

    pk = Column(
        verbose_name="ID",
        attrs={'th': {'class': 'node-list-table-thin'}},
    )

    overcommit = Column(
        verbose_name=_("Overcommit"),
        attrs={'th': {'class': 'node-list-table-thin'}},
    )

    get_status_display = Column(
        verbose_name=_("Status"),
        attrs={'th': {'class': 'node-list-table-thin'}},
        order_by=("enabled", "schedule_enabled"),
    )

    name = TemplateColumn(
        template_name="dashboard/node-list/column-name.html",
        order_by="normalized_name"
    )

    priority = Column(
        attrs={'th': {'class': 'node-list-table-thin'}},
    )

    number_of_VMs = TemplateColumn(
        verbose_name=_("Number of VMs"),
        template_name='dashboard/node-list/column-vm.html',
        attrs={'th': {'class': 'node-list-table-thin'}},
    )

    monitor = TemplateColumn(
        verbose_name=_("Monitor"),
        template_name='dashboard/node-list/column-monitor.html',
        attrs={'th': {'class': 'node-list-table-monitor'}},
        orderable=False,
    )

    minion_online = BooleanColumn(
        verbose_name=_("Minion online"),
        attrs={'th': {'class': 'node-list-table-thin'}},
        orderable=False,
    )

    class Meta:
        model = Node
        attrs = {'class': ('table table-bordered table-striped table-hover '
                           'node-list-table')}
        fields = ('pk', 'name', 'host', 'get_status_display', 'priority',
                  'minion_online', 'overcommit', 'number_of_VMs', )


class GroupListTable(Table):
    pk = TemplateColumn(
        template_name='dashboard/group-list/column-id.html',
        verbose_name="ID",
        attrs={'th': {'class': 'group-list-table-thin'}},
    )

    name = TemplateColumn(
        template_name="dashboard/group-list/column-name.html"
    )

    number_of_users = TemplateColumn(
        orderable=False,
        verbose_name=_("Number of users"),
        template_name='dashboard/group-list/column-users.html',
        attrs={'th': {'class': 'group-list-table-admin'}},
    )

    admin = TemplateColumn(
        orderable=False,
        verbose_name=_("Admin"),
        template_name='dashboard/group-list/column-admin.html',
        attrs={'th': {'class': 'group-list-table-admin'}},
    )

    actions = TemplateColumn(
        orderable=False,
        verbose_name=_("Actions"),
        attrs={'th': {'class': 'group-list-table-thin'}},
        template_code=('{% include "dashboard/group-list/column-'
                       'actions.html" with btn_size="btn-xs" %}'),
    )

    class Meta:
        model = Group
        attrs = {'class': ('table table-bordered table-striped table-hover '
                           'group-list-table')}
        fields = ('pk', 'name', )
        order_by = ('pk', )


class UserListTable(Table):
    username = LinkColumn(
        'dashboard.views.profile',
        args=[A('username')],
    )
    profile__org_id = LinkColumn(
        'dashboard.views.profile',
        accessor='profile.org_id',
        args=[A('username')],
        verbose_name=_('Organization ID')
    )

    is_superuser = BooleanColumn(
        verbose_name=mark_safe(
            _('<abbr data-placement="left" title="Superuser status">SU</abbr>')
        )
    )
    is_active = BooleanColumn()

    class Meta:
        model = User
        template = "django_tables2/with_pagination.html"
        attrs = {'class': ('table table-bordered table-striped table-hover')}
        fields = ('username', 'last_name', 'first_name', 'profile__org_id',
                  'email', 'is_active', 'is_superuser')
        order_by = ('username', )


class TemplateListTable(Table):
    name = TemplateColumn(
        template_name="dashboard/template-list/column-template-name.html",
        attrs={'th': {'data-sort': "string"}}
    )
    resources = TemplateColumn(
        template_name="dashboard/template-list/column-template-resources.html",
        verbose_name=_("Resources"),
        attrs={'th': {'data-sort': "int"}},
        order_by=("ram_size"),
    )
    lease = TemplateColumn(
        "{{ record.lease.name }}",
        verbose_name=_("Lease"),
        attrs={'th': {'data-sort': "string"}}
    )
    system = Column(
        attrs={'th': {'data-sort': "string"}}
    )
    access_method = Column(
        attrs={'th': {'data-sort': "string"}}
    )
    owner = TemplateColumn(
        template_name="dashboard/template-list/column-template-owner.html",
        verbose_name=_("Owner"),
        attrs={'th': {'data-sort': "string"}}
    )
    created = TemplateColumn(
        template_name="dashboard/template-list/column-template-created.html",
        verbose_name=_("Created at"),
    )
    running = TemplateColumn(
        template_name="dashboard/template-list/column-template-running.html",
        verbose_name=_("Running"),
        attrs={'th': {'data-sort': "int"}},
    )
    actions = TemplateColumn(
        verbose_name=_("Actions"),
        template_name="dashboard/template-list/column-template-actions.html",
        attrs={'th': {'class': 'template-list-table-thin'}},
        orderable=False,
    )

    class Meta:
        model = InstanceTemplate
        attrs = {'class': ('table table-bordered table-striped table-hover'
                           ' template-list-table')}
        fields = ('name', 'resources', 'system', 'access_method', 'lease',
                  'owner', 'created', 'running', 'actions', )

        prefix = "template-"


class LeaseListTable(Table):
    name = LinkColumn(
        'dashboard.views.lease-detail',
        args=[A('pk')],
    )

    suspend_interval_seconds = TemplateColumn(
        "{{ record.get_readable_suspend_time }}"
    )

    delete_interval_seconds = TemplateColumn(
        "{{ record.get_readable_delete_time }}"
    )

    actions = TemplateColumn(
        verbose_name=_("Actions"),
        template_name="dashboard/template-list/column-lease-actions.html",
        orderable=False,
    )

    class Meta:
        model = Lease
        attrs = {'class': ('table table-bordered table-striped table-hover'
                           ' lease-list-table')}
        fields = ('name', 'suspend_interval_seconds',
                  'delete_interval_seconds', )
        prefix = "lease-"
        empty_text = _("No available leases.")


class UserKeyListTable(Table):
    name = LinkColumn(
        'dashboard.views.userkey-detail',
        args=[A('pk')],
        verbose_name=_("Name"),
        attrs={'th': {'data-sort': "string"}}
    )

    fingerprint = Column(
        verbose_name=_("Fingerprint"),
        attrs={'th': {'data-sort': "string"}}
    )

    created = Column(
        verbose_name=_("Created at"),
        attrs={'th': {'data-sort': "string"}}
    )

    actions = TemplateColumn(
        verbose_name=_("Actions"),
        template_name="dashboard/userkey-list/column-userkey-actions.html",
        orderable=False,
    )

    class Meta:
        model = UserKey
        attrs = {'class': ('table table-bordered table-striped table-hover'),
                 'id': "profile-key-list-table"}
        fields = ('name', 'fingerprint', 'created', 'actions')
        prefix = "key-"
        empty_text = _("You haven't added any public keys yet.")


class ConnectCommandListTable(Table):
    name = LinkColumn(
        'dashboard.views.connect-command-detail',
        args=[A('pk')],
        attrs={'th': {'data-sort': "string"}}
    )
    access_method = Column(
        verbose_name=_("Access method"),
        attrs={'th': {'data-sort': "string"}}
    )
    template = Column(
        verbose_name=_("Template"),
        attrs={'th': {'data-sort': "string"}}
    )
    actions = TemplateColumn(
        verbose_name=_("Actions"),
        template_name=("dashboard/connect-command-list/column-command"
                       "-actions.html"),
        orderable=False,
    )

    class Meta:
        model = ConnectCommand
        attrs = {'class': ('table table-bordered table-striped table-hover'),
                 'id': "profile-command-list-table"}
        fields = ('name', 'access_method',  'template', 'actions')
        prefix = "cmd-"
        empty_text = _(
            "You don't have any custom connection commands yet. You can "
            "specify commands to be displayed on VM detail pages instead of "
            "the defaults.")


class DiskListTable(Table):
    pk = LinkColumn(
        'dashboard.views.disk-detail',
        args=[A('pk')],
        verbose_name=_("ID"),
    )
    size = FileSizeColumn()
    appliance = ApplianceColumn(
        template_name="dashboard/storage/column-appliance.html",
        verbose_name=_("Appliance"),
        orderable=False,
    )
    is_ready = BooleanColumn(
        verbose_name=_("ready")
    )

    class Meta:
        model = Disk
        attrs = {'class': "table table-bordered table-striped table-hover",
                 'id': "disk-list-table"}
        fields = ("pk", "appliance", "filename", "size", "is_ready")
        prefix = "disk-"
        order_by = ("-pk", )
        per_page = 15
        empty_text = _("No disk found.")


class MessageListTable(Table):
    message = LinkColumn(
        'dashboard.views.message-detail',
        args=[A('pk')],
        attrs={'th': {'data-sort': "string"}}
    )

    class Meta:
        template = "django_tables2/with_pagination.html"
        model = Message
        attrs = {'class': "table table-bordered table-striped table-hover",
                 'id': "disk-list-table"}
        order_by = ("-pk", )
        fields = ('pk', 'message', 'enabled', 'effect')