# -*- coding: utf-8 -*-
#
from rest_framework.mixins import ListModelMixin, CreateModelMixin
from django.db.models import F, Value
from django.db.models.functions import Concat
from rest_framework.permissions import IsAuthenticated
from rest_framework import generics

from common.drf.api import JMSReadOnlyModelViewSet
from common.drf.filters import DatetimeRangeFilter
from common.api import CommonGenericViewSet
from orgs.mixins.api import OrgGenericViewSet, OrgBulkModelViewSet, OrgRelationMixin
from orgs.utils import current_org
from ops.models import CommandExecution
from . import filters
from .models import FTPLog, UserLoginLog, OperateLog, PasswordChangeLog
from .serializers import FTPLogSerializer, UserLoginLogSerializer, CommandExecutionSerializer
from .serializers import OperateLogSerializer, PasswordChangeLogSerializer, CommandExecutionHostsRelationSerializer


class FTPLogViewSet(CreateModelMixin,
                    ListModelMixin,
                    OrgGenericViewSet):
    model = FTPLog
    serializer_class = FTPLogSerializer
    extra_filter_backends = [DatetimeRangeFilter]
    date_range_filter_fields = [
        ('date_start', ('date_from', 'date_to'))
    ]
    filterset_fields = ['user', 'asset', 'system_user', 'filename']
    search_fields = filterset_fields
    ordering = ['-date_start']


class UserLoginCommonMixin:
    queryset = UserLoginLog.objects.all()
    serializer_class = UserLoginLogSerializer
    extra_filter_backends = [DatetimeRangeFilter]
    date_range_filter_fields = [
        ('datetime', ('date_from', 'date_to'))
    ]
    filterset_fields = ['username', 'ip', 'city', 'type', 'status', 'mfa']
    search_fields = ['username', 'ip', 'city']


class UserLoginLogViewSet(UserLoginCommonMixin, ListModelMixin, CommonGenericViewSet):

    @staticmethod
    def get_org_members():
        users = current_org.get_members().values_list('username', flat=True)
        return users

    def get_queryset(self):
        queryset = super().get_queryset()
        if current_org.is_root():
            return queryset
        users = self.get_org_members()
        queryset = queryset.filter(username__in=users)
        return queryset


class MyLoginLogAPIView(UserLoginCommonMixin, generics.ListAPIView):
    permission_classes = [IsAuthenticated]

    def get_queryset(self):
        qs = super().get_queryset()
        qs = qs.filter(username=self.request.user.username)
        return qs


class OperateLogViewSet(ListModelMixin, OrgGenericViewSet):
    model = OperateLog
    serializer_class = OperateLogSerializer
    extra_filter_backends = [DatetimeRangeFilter]
    date_range_filter_fields = [
        ('datetime', ('date_from', 'date_to'))
    ]
    filterset_fields = ['user', 'action', 'resource_type', 'resource', 'remote_addr']
    search_fields = ['resource']
    ordering = ['-datetime']


class PasswordChangeLogViewSet(ListModelMixin, CommonGenericViewSet):
    queryset = PasswordChangeLog.objects.all()
    serializer_class = PasswordChangeLogSerializer
    extra_filter_backends = [DatetimeRangeFilter]
    date_range_filter_fields = [
        ('datetime', ('date_from', 'date_to'))
    ]
    filterset_fields = ['user', 'change_by', 'remote_addr']
    search_fields = filterset_fields
    ordering = ['-datetime']

    def get_queryset(self):
        users = current_org.get_members()
        queryset = super().get_queryset().filter(
            user__in=[user.__str__() for user in users]
        )
        return queryset


class CommandExecutionViewSet(ListModelMixin, OrgGenericViewSet):
    model = CommandExecution
    serializer_class = CommandExecutionSerializer
    extra_filter_backends = [DatetimeRangeFilter]
    date_range_filter_fields = [
        ('date_start', ('date_from', 'date_to'))
    ]
    filterset_fields = [
        'user__name', 'user__username', 'command',
        'run_as__name', 'run_as__username', 'is_finished'
    ]
    search_fields = [
        'command', 'user__name', 'user__username',
        'run_as__name', 'run_as__username',
    ]
    ordering = ['-date_created']

    def get_queryset(self):
        queryset = super().get_queryset()
        if current_org.is_root():
            return queryset
        queryset = queryset.filter(run_as__org_id=current_org.org_id())
        return queryset


class CommandExecutionHostRelationViewSet(OrgRelationMixin, OrgBulkModelViewSet):
    serializer_class = CommandExecutionHostsRelationSerializer
    m2m_field = CommandExecution.hosts.field
    filterset_class = filters.CommandExecutionFilter
    search_fields = ('asset__hostname', )
    http_method_names = ['options', 'get']
    rbac_perms = {
        'GET': 'ops.view_commandexecution',
        'list': 'ops.view_commandexecution',
    }

    def get_queryset(self):
        queryset = super().get_queryset()
        queryset = queryset.annotate(
            asset_display=Concat(
                F('asset__hostname'), Value('('),
                F('asset__ip'), Value(')')
            )
        )
        return queryset